| 1 | tim | 243 | // This is the forcefield file for the Dipolar Unified-atom Force Field (DUFF) | 
| 2 |  |  | // | 
| 3 |  |  | // The sections are divided into AtomTypes | 
| 4 |  |  | // | 
| 5 | gezelter | 981 | // many parameters (but not all) are derived from the TRAPPE force field | 
| 6 | tim | 243 | // of Siepmann's group. | 
| 7 | gezelter | 981 |  | 
| 8 |  |  | begin Options | 
| 9 |  |  | Name                   = "DUFF" | 
| 10 |  |  | GayBerneMu             = 2.0 | 
| 11 |  |  | GayBerneNu             = 1.0 | 
| 12 |  |  | end Options | 
| 13 |  |  |  | 
| 14 | tim | 243 | begin AtomTypes | 
| 15 |  |  | //Name          mass     (amu) | 
| 16 |  |  | CH4             16.05 | 
| 17 |  |  | CH3             15.04 | 
| 18 |  |  | CH2             14.03 | 
| 19 | gezelter | 634 | CH              13.02 | 
| 20 | chrisfen | 1007 | DIP             9.00764 | 
| 21 | tim | 243 | SSD             18.0153 | 
| 22 | chrisfen | 1007 | SSD1            18.0153 | 
| 23 |  |  | SSD_E           18.0153 | 
| 24 |  |  | SSD_RF          18.0153 | 
| 25 | chrisfen | 532 | TAP             18.0153 | 
| 26 | chrisfen | 1007 | TRED            18.0153 | 
| 27 |  |  | EP_TRED         0.0 | 
| 28 | gezelter | 660 | O_DIP3P         15.9994 | 
| 29 | tim | 243 | O_TIP3P         15.9994 | 
| 30 |  |  | O_TIP4P         15.9994 | 
| 31 | chrisfen | 1007 | O_TIP4P-Ew      15.9994 | 
| 32 | tim | 243 | O_TIP5P         15.9994 | 
| 33 | gezelter | 981 | O_TIP5P-E       15.9994 | 
| 34 | tim | 243 | O_SPCE          15.9994 | 
| 35 |  |  | O_SPC           15.9994 | 
| 36 | gezelter | 660 | H_DIP3P         1.0079 | 
| 37 | tim | 243 | H_TIP3P         1.0079 | 
| 38 |  |  | H_TIP4P         1.0079 | 
| 39 | chrisfen | 1007 | H_TIP4P-Ew      1.0079 | 
| 40 | tim | 243 | H_TIP5P         1.0079 | 
| 41 |  |  | H_SPCE          1.0079 | 
| 42 |  |  | H_SPC           1.0079 | 
| 43 |  |  | EP_TIP4P        0.0 | 
| 44 | chrisfen | 1007 | EP_TIP4P-Ew     0.0 | 
| 45 | tim | 243 | EP_TIP5P        0.0 | 
| 46 |  |  | HEAD            196 | 
| 47 |  |  | TB1             14.03 | 
| 48 |  |  | TE1             15.04 | 
| 49 |  |  | TB2             21.05 | 
| 50 |  |  | TE2             22.56 | 
| 51 |  |  | TB3             28.06 | 
| 52 |  |  | TE3             30.08 | 
| 53 |  |  | H               1.00794 | 
| 54 | kdaily | 529 | He              4.002602 | 
| 55 | tim | 243 | C               12.0107 | 
| 56 |  |  | N               14.00674 | 
| 57 |  |  | O               15.9994 | 
| 58 |  |  | F               18.9984032 | 
| 59 |  |  | Ne              20.1797 | 
| 60 |  |  | S               32.066 | 
| 61 |  |  | Cl              35.4527 | 
| 62 | chrisfen | 593 | Cl-             35.4527 | 
| 63 |  |  | Na+             22.98977 | 
| 64 | tim | 243 | Ar              39.948 | 
| 65 | gezelter | 983 | GBAr            39.948 | 
| 66 | tim | 243 | Br              79.904 | 
| 67 | kdaily | 529 | Kr              83.80 | 
| 68 | gezelter | 983 | GBKr            83.80 | 
| 69 | chrisfen | 1007 | U               1.00 | 
| 70 | gezelter | 684 | GBPaper         48.0428 | 
| 71 | gezelter | 981 | GBlinear        48.0428 | 
| 72 |  |  | GBC6H6          78.11184 | 
| 73 |  |  | GBCH3OH         32.04186 | 
| 74 |  |  | GBH2O           18.0153 | 
| 75 | chrisfen | 697 | Pchg+           5.000 | 
| 76 |  |  | Pchg-           5.000 | 
| 77 |  |  | PDIP            10.000 | 
| 78 | chrisfen | 885 | DPD             72.06112 | 
| 79 | tim | 243 | end AtomTypes | 
| 80 |  |  |  | 
| 81 |  |  | begin DirectionalAtomTypes | 
| 82 |  |  | //Name          I_xx    I_yy    I_zz    (All moments in (amu*Ang^2) | 
| 83 | chrisfen | 1007 | H_DIP3P         0       0       0 | 
| 84 |  |  | DIP             0.8202  0.8202  0 | 
| 85 | tim | 243 | SSD             1.7696  0.6145  1.1550 | 
| 86 |  |  | SSD1            1.7696  0.6145  1.1550 | 
| 87 |  |  | SSD_E           1.7696  0.6145  1.1550 | 
| 88 |  |  | SSD_RF          1.7696  0.6145  1.1550 | 
| 89 | chrisfen | 532 | TAP             1.7696  0.6145  1.1550 | 
| 90 | chrisfen | 1007 | TRED            1.7696  0.6145  1.1550 | 
| 91 | tim | 243 | HEAD            1125    1125    250 | 
| 92 | gezelter | 684 | GBPaper         86.477  86.477  0 | 
| 93 | gezelter | 981 | GBlinear        86.477  86.477  0 | 
| 94 |  |  | GBC6H6          88.781  88.781  177.561 | 
| 95 |  |  | GBCH3OH         4.056   20.258  20.999 | 
| 96 |  |  | GBH2O           1.777   0.581   1.196 | 
| 97 | gezelter | 983 | GBAr            1.777   0.581   1.196 | 
| 98 |  |  | GBKr            1.777   0.581   1.196 | 
| 99 | chrisfen | 697 | PDIP            10.0    10.0    0 | 
| 100 | tim | 243 | end DirectionalAtomTypes | 
| 101 | kdaily | 529 |  | 
| 102 |  |  | begin GayBerneAtomTypes | 
| 103 | chrisfen | 1007 | //Name          d       l           eps             eps_ratio   dw | 
| 104 |  |  | GBPaper         3.35    10.05   0.774729        0.2             1.0 | 
| 105 | gezelter | 981 | GBlinear        2.8104  9.993   0.774729        0.150814        1.0 | 
| 106 |  |  | GBC6H6          4.65    2.03    0.540           3.67            0.6 | 
| 107 |  |  | GBCH3OH         2.55    3.18    0.542           1.03            1.0 | 
| 108 | chrisfen | 1007 | GBAr            3.41    3.41    0.2381          1.0             1.0 | 
| 109 | gezelter | 983 | GBKr            3.83    3.83    0.3259          1.0             1.0 | 
| 110 | kdaily | 529 | end GayBerneAtomTypes | 
| 111 |  |  |  | 
| 112 | tim | 243 | begin LennardJonesAtomTypes | 
| 113 | chrisfen | 1007 | //Name          epsilon             sigma | 
| 114 |  |  | DIP             0.038025        3.12 | 
| 115 |  |  | SSD             0.152           3.051 | 
| 116 | chrisfen | 550 | SSD1            0.152           3.016 | 
| 117 |  |  | SSD_E           0.152           3.035 | 
| 118 |  |  | SSD_RF          0.152           3.019 | 
| 119 | chrisfen | 1007 | TAP             0.152           2.9 | 
| 120 |  |  | TRED            0.2045          2.980 | 
| 121 | gezelter | 660 | O_DIP3P         0.1521          3.15061 | 
| 122 | chrisfen | 550 | O_TIP3P         0.1521          3.15061 | 
| 123 |  |  | O_TIP4P         0.1550          3.15365 | 
| 124 | chrisfen | 1007 | O_TIP4P-Ew      0.16275         3.16435 | 
| 125 | chrisfen | 550 | O_TIP5P         0.16            3.12 | 
| 126 | gezelter | 981 | O_TIP5P-E       0.178           3.097 | 
| 127 | chrisfen | 550 | O_SPCE          0.15532         3.16549 | 
| 128 |  |  | O_SPC           0.15532         3.16549 | 
| 129 |  |  | CH4             0.279           3.73 | 
| 130 |  |  | CH3             0.185           3.75 | 
| 131 |  |  | CH2             0.0866          3.95 | 
| 132 |  |  | CH              0.0189          4.68 | 
| 133 |  |  | HEAD            0.185           0.75 | 
| 134 |  |  | TB1             0.0866          4.0 | 
| 135 |  |  | TE1             0.185           4.0 | 
| 136 |  |  | TB2             0.25            6.0 | 
| 137 | chrisfen | 1007 | TE2             0.5             6.0 | 
| 138 |  |  | TB3             0.5             8.0 | 
| 139 |  |  | TE3             0.75            8.0 | 
| 140 | chrisfen | 550 | H               0.017090056482  2.81 | 
| 141 |  |  | He              0.020269601874  2.28 | 
| 142 |  |  | C               0.101745452544  3.35 | 
| 143 |  |  | N               0.074123151951  3.31 | 
| 144 |  |  | O               0.122412497592  2.95 | 
| 145 |  |  | F               0.104924997936  2.83 | 
| 146 |  |  | Ne              0.09339914589   2.72 | 
| 147 |  |  | S               0.36366050421   3.52 | 
| 148 |  |  | Cl              0.344781953445  3.35 | 
| 149 | chrisfen | 593 | Cl-             0.100           4.445 | 
| 150 |  |  | Na+             0.118           2.579 | 
| 151 | chrisfen | 550 | Ar              0.238068461226  3.41 | 
| 152 | chrisfen | 1007 | Br              0.5111119214    3.54 | 
| 153 | chrisfen | 550 | Kr              0.32590340268   3.83 | 
| 154 |  |  | U               1.0             1.0 | 
| 155 | chrisfen | 697 | Pchg+           0.1             3.0 | 
| 156 |  |  | Pchg-           0.1             3.0 | 
| 157 |  |  | PDIP            0.15            5.0 | 
| 158 | chrisfen | 1007 | DPD             1.194           4.70 | 
| 159 | gezelter | 981 | GBH2O           0.2             2.35 | 
| 160 | tim | 243 | end LennardJonesAtomTypes | 
| 161 |  |  |  | 
| 162 | tim | 412 | begin ChargeAtomTypes | 
| 163 | chrisfen | 550 | // Name         charge | 
| 164 |  |  | O_TIP3P         -0.834 | 
| 165 |  |  | O_SPCE          -0.8476 | 
| 166 |  |  | O_SPC           -0.82 | 
| 167 |  |  | H_TIP3P         0.417 | 
| 168 |  |  | H_TIP4P         0.520 | 
| 169 | chrisfen | 1007 | H_TIP4P-Ew      0.52422 | 
| 170 | chrisfen | 550 | H_TIP5P         0.241 | 
| 171 |  |  | H_SPCE          0.4238 | 
| 172 |  |  | H_SPC           0.42 | 
| 173 |  |  | EP_TIP4P        -1.040 | 
| 174 |  |  | EP_TIP4P-Ew     -1.04844 | 
| 175 |  |  | EP_TIP5P        -0.241 | 
| 176 |  |  | Cl              -1.0 | 
| 177 | chrisfen | 593 | Cl-             -1.0 | 
| 178 |  |  | Na+             1.0 | 
| 179 | chrisfen | 697 | Pchg+           0.5 | 
| 180 |  |  | Pchg-           -1.0 | 
| 181 | chrisfen | 1007 | EP_TRED         1.041 | 
| 182 |  |  | TRED            -1.041 | 
| 183 | tim | 412 | end ChargeAtomTypes | 
| 184 |  |  |  | 
| 185 |  |  | begin MultipoleAtomTypes | 
| 186 | gezelter | 433 | // OOPSE currently only supports charge-charge, charge-dipole, | 
| 187 |  |  | // dipole-dipole, and charge-quadrupole interactions. | 
| 188 |  |  | // Dipoles may be either traditional point-dipoles or split-dipoles. | 
| 189 |  |  | // possible formats for a multipolar atom type are: | 
| 190 |  |  | // | 
| 191 |  |  | // Point-dipoles: | 
| 192 | tim | 418 | // name d phi theta psi dipole_moment | 
| 193 | gezelter | 433 | // | 
| 194 |  |  | // Split-dipoles: | 
| 195 | tim | 418 | // name s phi theta psi dipole_moment splitdipole_distance | 
| 196 | gezelter | 433 | // | 
| 197 |  |  | // Point-Quadrupoles: | 
| 198 | tim | 418 | // name q phi theta psi Qxx Qyy Qzz | 
| 199 | gezelter | 433 | // | 
| 200 |  |  | // Atoms with both dipole and quadrupole moments: | 
| 201 | tim | 418 | // name dq phi theta psi dipole_moment Qxx Qyy Qzz | 
| 202 | gezelter | 433 | // | 
| 203 |  |  | // Atoms with both split dipoles and quadrupole moments: | 
| 204 | tim | 418 | // name sq phi theta psi dipole_moment splitdipole_distance Qxx Qyy Qzz | 
| 205 | tim | 412 | // | 
| 206 | gezelter | 433 | // Euler angles are given in zxz convention in units of degrees. | 
| 207 |  |  | // | 
| 208 |  |  | // Charges are given in units of electrons. | 
| 209 |  |  | // | 
| 210 |  |  | // Dipoles are given in units of Debyes. | 
| 211 |  |  | // | 
| 212 |  |  | // Split dipole distances are given in units of Angstroms. | 
| 213 |  |  | // | 
| 214 |  |  | // Quadrupole moments are given in units of 10^-26 esu cm^2 (also known as an | 
| 215 |  |  | //                                                           esu centi-barn) | 
| 216 |  |  | // | 
| 217 | chrisfen | 1007 | H_DIP3P d       0.0     0.0     0.0     1.91 | 
| 218 |  |  | DIP     d       0.0     0.0     0.0     1.91 | 
| 219 |  |  | SSD_E   dq      0.0     0.0     0.0     2.42    -1.682  1.762   -0.08 | 
| 220 |  |  | SSD_RF  dq      0.0     0.0     0.0     2.48    -1.682  1.762   -0.08 | 
| 221 |  |  | SSD     dq      0.0     0.0     0.0     2.35    -1.682  1.762   -0.08 | 
| 222 |  |  | SSD1    dq      0.0     0.0     0.0     2.35    -1.682  1.762   -0.08 | 
| 223 |  |  | TAP     dq      0.0     0.0     0.0     2.12    -1.682  1.762   -0.08 | 
| 224 |  |  | //TRED    q       0.0     0.0     0.0     -1.682  1.762   -0.08 | 
| 225 |  |  | PDIP    d       0.0     0.0     0.0     9.6064 | 
| 226 |  |  | GBH2O   dq      0.0     0.0     0.0     1.772   -2.165  2.446   -0.281 | 
| 227 | gezelter | 983 | GBC6H6  q       0.0     0.0     0.0     4.584   4.584   -9.168 | 
| 228 | tim | 414 | //HDP     s       0.0     0.0     0.0     20.6    4.63 | 
| 229 | tim | 412 | end MultipoleAtomTypes | 
| 230 | tim | 243 |  | 
| 231 |  |  | begin StickyAtomTypes | 
| 232 | chrisfen | 1007 | //name  w0      v0 (kcal/mol)   v0p     rl (Ang)  ru    rlp     rup | 
| 233 | tim | 243 | SSD_E   0.07715 3.90            3.90    2.40      3.80  2.75    3.35 | 
| 234 |  |  | SSD_RF  0.07715 3.90            3.90    2.40      3.80  2.75    3.35 | 
| 235 |  |  | SSD     0.07715 3.7284          3.7284  2.75      3.35  2.75    4.0 | 
| 236 |  |  | SSD1    0.07715 3.6613          3.6613  2.75      3.35  2.75    4.0 | 
| 237 | chrisfen | 1007 | TRED    0.07715 4.22            4.22    2.40      4.00  2.40    4.0 | 
| 238 | tim | 243 | end StickyAtomTypes | 
| 239 |  |  |  | 
| 240 | chrisfen | 532 | begin StickyPowerAtomTypes | 
| 241 | chrisfen | 1007 | //name  w0          v0 (kcal/mol)   v0p     rl (Ang)  ru        rlp         rup | 
| 242 |  |  | TAP     0.075   5.5                     0.25    2.75      3.5   2.75    3.25 | 
| 243 | chrisfen | 532 | end StickyPowerAtomTypes | 
| 244 | tim | 243 |  | 
| 245 |  |  | begin BondTypes | 
| 246 |  |  |  | 
| 247 |  |  | //Atom1 Atom2   Fixed | 
| 248 |  |  | //V_Fixed = 0 | 
| 249 |  |  |  | 
| 250 | chrisfen | 1007 | //Atom1 Atom2   Harmonic        b0              Kb (kcal/mol) | 
| 251 | tim | 243 | //V_Harmonic = 0.5*Kb(b- bo)^2 | 
| 252 |  |  | //Harmonic Examples | 
| 253 |  |  | HEAD    CH3     Harmonic                2.75            260 | 
| 254 |  |  | HEAD    CH2     Harmonic                2.75            260 | 
| 255 |  |  | HEAD    CH      Harmonic                2.75            260 | 
| 256 |  |  | HEAD    TB1     Harmonic                2.76            260 | 
| 257 |  |  | HEAD    TB2     Harmonic                3.20            260 | 
| 258 |  |  | HEAD    TB3     Harmonic                3.63            260 | 
| 259 | chrisfen | 1007 | CH3         CH3 Harmonic                1.526           260 | 
| 260 |  |  | CH3         CH2 Harmonic                1.526           260 | 
| 261 |  |  | CH3         CH  Harmonic                1.526           260 | 
| 262 |  |  | CH2         CH2 Harmonic                1.526           260 | 
| 263 |  |  | CH2         CH  Harmonic                1.526           260 | 
| 264 |  |  | CH          CH  Harmonic                1.526           260 | 
| 265 |  |  | TB1         TB1 Harmonic                1.526           260 | 
| 266 |  |  | TB2         TB2 Harmonic                2.34            260 | 
| 267 |  |  | TB3         TB3 Harmonic                3.12            260 | 
| 268 |  |  | TB1         TE1 Harmonic                1.526           260 | 
| 269 |  |  | TB2         TE2 Harmonic                2.34            260 | 
| 270 |  |  | TB3         TE3 Harmonic                3.12            260 | 
| 271 | tim | 243 |  | 
| 272 |  |  | //Atom1 Atom2   Cubic           b0      K3      K2      K1      K0 | 
| 273 |  |  | //V_Cubic = K3(b - b0)^3 + K2(b - b0)^2 + K1(b - b0) + K0 | 
| 274 |  |  |  | 
| 275 |  |  |  | 
| 276 |  |  | //Atom1 Atom2   Quartic b0      K4      K3      K2      K1      K0 | 
| 277 |  |  | //V_Quartic = K4(b - b0)^4 + K3(b - b0)^3 + K2(b - b0)^2 + K1(b - b0) + K0 | 
| 278 |  |  |  | 
| 279 |  |  |  | 
| 280 |  |  | //Atom1 Atom2   Polynomial      b0      i       Ki      [j      Kj] | 
| 281 |  |  | //V_Quartic = Ki(b - b0)^i + Kj(b - b0)^j + ... | 
| 282 |  |  |  | 
| 283 |  |  |  | 
| 284 |  |  | end BondTypes | 
| 285 |  |  |  | 
| 286 |  |  | begin BendTypes | 
| 287 |  |  |  | 
| 288 |  |  | //Harmonic | 
| 289 |  |  | //Atom1 Atom2   Atom3   Harmonic        Theta0  Ktheta | 
| 290 |  |  | //V_Harmonic = 0.5*Ktheta(Theta - Theta0)^2 | 
| 291 |  |  | //Ktheta: kcal/mole/rad**2 | 
| 292 |  |  | //Theta0: degrees | 
| 293 |  |  | //Harmonic examples | 
| 294 |  |  | // | 
| 295 |  |  | HEAD    CH2     HEAD    Harmonic        114.0   117.68 | 
| 296 |  |  | HEAD    CH2     CH3     Harmonic        114.0   117.68 | 
| 297 |  |  | HEAD    CH2     CH2     Harmonic        114.0   117.68 | 
| 298 |  |  | HEAD    TB1     TB1     Harmonic        114.0   117.68 | 
| 299 |  |  | HEAD    TB2     TB2     Harmonic        114.0   117.68 | 
| 300 |  |  | HEAD    TB3     TB3     Harmonic        114.0   117.68 | 
| 301 |  |  | HEAD    CH2     CH      Harmonic        114.0   117.68 | 
| 302 |  |  | HEAD    CH      CH3     Harmonic        112.0   117.68 | 
| 303 |  |  | HEAD    CH      CH2     Harmonic        112.0   117.68 | 
| 304 |  |  | HEAD    CH      CH      Harmonic        112.0   117.68 | 
| 305 |  |  | CH3     CH2     CH3     Harmonic        114.0   117.68 | 
| 306 |  |  | CH3     CH2     CH2     Harmonic        114.0   117.68 | 
| 307 |  |  | CH3     CH2     CH      Harmonic        114.0   117.68 | 
| 308 |  |  | CH3     CH      CH3     Harmonic        112.0   117.68 | 
| 309 |  |  | CH3     CH      CH2     Harmonic        112.0   117.68 | 
| 310 |  |  | CH3     CH      CH      Harmonic        112.0   117.68 | 
| 311 |  |  | CH2     CH2     CH2     Harmonic        114.0   117.68 | 
| 312 |  |  | CH2     CH2     CH      Harmonic        114.0   117.68 | 
| 313 |  |  | CH2     CH      CH2     Harmonic        112.0   117.68 | 
| 314 |  |  | CH2     CH      CH      Harmonic        112.0   117.68 | 
| 315 |  |  | CH      CH2     CH      Harmonic        114.0   117.68 | 
| 316 |  |  | CH      CH      CH      Harmonic        112.0   117.68 | 
| 317 |  |  | TB1     TB1     TB1     Harmonic        114.0   117.68 | 
| 318 |  |  | TB2     TB2     TB2     Harmonic        114.0   117.68 | 
| 319 |  |  | TB3     TB3     TB3     Harmonic        114.0   117.68 | 
| 320 |  |  | TE1     TB1     TB1     Harmonic        114.0   117.68 | 
| 321 |  |  | TE2     TB2     TB2     Harmonic        114.0   117.68 | 
| 322 |  |  | TE3     TB3     TB3     Harmonic        114.0   117.68 | 
| 323 |  |  |  | 
| 324 |  |  | //GhostBend | 
| 325 |  |  | //Atom1 Atom2   GHOST   GhostBend       Theta0  Ktheta | 
| 326 |  |  | //Atom2 must be directional atom | 
| 327 |  |  | //Ghost examples | 
| 328 |  |  | CH2     HEAD    GHOST   GhostBend       129.783 0.00354 | 
| 329 |  |  | CH2     HEAD    GHOST   GhostBend       90.0    117.68 | 
| 330 |  |  | TB1     HEAD    GHOST   GhostBend       90.0    117.68 | 
| 331 |  |  | TB2     HEAD    GHOST   GhostBend       90.0    117.68 | 
| 332 |  |  | TB3     HEAD    GHOST   GhostBend       90.0    117.68 | 
| 333 |  |  |  | 
| 334 |  |  | //UreyBradley | 
| 335 |  |  | //Atom1 Atom2   Atom3   UreyBradley             Theta0  Ktheta  S0      Kub | 
| 336 |  |  | //V_UreyBradleyBend = Ktheta(Theta - Theta0)^2 +  Kub(S - S0)^2 | 
| 337 |  |  | //Ktheta: kcal/mole/rad**2 | 
| 338 |  |  | //Theta0: degrees | 
| 339 |  |  | //Kub: kcal/mole/A**2 | 
| 340 |  |  | //S0: A | 
| 341 |  |  |  | 
| 342 |  |  | //Cubic | 
| 343 |  |  | //Atom1 Atom2   Atom3   Cubic   Theta0  K3      K2      K1      K0 | 
| 344 |  |  | //V_Cubic = K3(Theta - Theta0)^3 + K2(Theta - Theta0)^2 + K1(Theta - Theta0) + K0 | 
| 345 |  |  |  | 
| 346 |  |  | //Quartic | 
| 347 |  |  | //Atom1 Atom2   Atom3   Quartic Theta0  K4      K3      K2      K1      K0 | 
| 348 |  |  | //V_Quartic = K4(Theta - Theta0)^4 + K3(Theta - Theta0)^3 + K2(Theta - Theta0)^2 + K1(Theta - Theta0) + K0 | 
| 349 |  |  |  | 
| 350 |  |  | //Polynomial | 
| 351 |  |  | //Atom1 Atom2   Atom3   Polynomial      Theta0  i       Ki      [j      Kj] | 
| 352 |  |  | //V_Polynomial = Ki(Theta - Theta0)^i +  Kj(Theta - Theta0)^j + ... | 
| 353 |  |  |  | 
| 354 |  |  | end BendTypes | 
| 355 |  |  |  | 
| 356 |  |  | begin TorsionTypes | 
| 357 |  |  |  | 
| 358 |  |  | //Cubic | 
| 359 |  |  | //Atom1 Atom2   Atom3   Atom4   Cubic           k3              k2              k1              k0  ( all are kcal/mol ) | 
| 360 |  |  | //V_Cubic = k3(cos phi)^3 + k2(cos phi)^2 + k1(cos phi) + k0 | 
| 361 |  |  | //Cubic Examples | 
| 362 |  |  | HEAD    CH2     CH2     HEAD    Cubic           5.9602          -0.2568         -3.802          2.1586 | 
| 363 |  |  | HEAD    CH2     CH      HEAD    Cubic           3.3254          -0.4215         -1.686          1.1661 | 
| 364 |  |  | HEAD    CH      CH      HEAD    Cubic           3.3254          -0.4215         -1.686          1.1661 | 
| 365 |  |  | HEAD    CH2     CH2     CH3     Cubic           5.9602          -0.2568         -3.802          2.1586 | 
| 366 |  |  | HEAD    CH2     CH      CH3     Cubic           3.3254          -0.4215         -1.686          1.1661 | 
| 367 |  |  | HEAD    CH      CH2     CH3     Cubic           3.3254          -0.4215         -1.686          1.1661 | 
| 368 |  |  | HEAD    CH      CH      CH3     Cubic           3.3254          -0.4215         -1.686          1.1661 | 
| 369 |  |  | HEAD    CH2     CH2     CH2     Cubic           5.9602          -0.2568         -3.802          2.1586 | 
| 370 |  |  | HEAD    CH2     CH      CH2     Cubic           3.3254          -0.4215         -1.686          1.1661 | 
| 371 |  |  | HEAD    CH      CH2     CH2     Cubic           3.3254          -0.4215         -1.686          1.1661 | 
| 372 |  |  | HEAD    CH      CH      CH2     Cubic           3.3254          -0.4215         -1.686          1.1661 | 
| 373 |  |  | HEAD    CH2     CH2     CH      Cubic           5.9602          -0.2568         -3.802          2.1586 | 
| 374 |  |  | HEAD    CH2     CH      CH      Cubic           3.3254          -0.4215         -1.686          1.1661 | 
| 375 |  |  | HEAD    CH      CH2     CH      Cubic           3.3254          -0.4215         -1.686          1.1661 | 
| 376 |  |  | HEAD    CH      CH      CH      Cubic           3.3254          -0.4215         -1.686          1.1661 | 
| 377 |  |  | HEAD    TB1     TB1     TB1     Cubic           5.9602          -0.2568         -3.802          2.1586 | 
| 378 |  |  | HEAD    TB2     TB2     TB2     Cubic           5.9602          -0.2568         -3.802          2.1586 | 
| 379 |  |  | HEAD    TB3     TB3     TB3     Cubic           5.9602          -0.2568         -3.802          2.1586 | 
| 380 |  |  | CH3     CH2     CH2     CH3     Cubic           5.9602          -0.2568         -3.802          2.1586 | 
| 381 |  |  | CH3     CH2     CH      CH3     Cubic           3.3254          -0.4215         -1.686          1.1661 | 
| 382 |  |  | CH3     CH      CH      CH3     Cubic           3.3254          -0.4215         -1.686          1.1661 | 
| 383 |  |  | CH3     CH2     CH2     CH2     Cubic           5.9602          -0.2568         -3.802          2.1586 | 
| 384 |  |  | CH3     CH2     CH      CH2     Cubic           3.3254          -0.4215         -1.686          1.1661 | 
| 385 |  |  | CH3     CH      CH2     CH2     Cubic           3.3254          -0.4215         -1.686          1.1661 | 
| 386 |  |  | CH3     CH      CH      CH2     Cubic           3.3254          -0.4215         -1.686          1.1661 | 
| 387 |  |  | CH3     CH2     CH2     CH      Cubic           5.9602          -0.2568         -3.802          2.1586 | 
| 388 |  |  | CH3     CH2     CH      CH      Cubic           3.3254          -0.4215         -1.686          1.1661 | 
| 389 |  |  | CH3     CH      CH2     CH      Cubic           3.3254          -0.4215         -1.686          1.1661 | 
| 390 |  |  | CH3     CH      CH      CH      Cubic           3.3254          -0.4215         -1.686          1.1661 | 
| 391 |  |  | CH2     CH2     CH2     CH2     Cubic           5.9602          -0.2568         -3.802          2.1586 | 
| 392 |  |  | CH2     CH2     CH      CH2     Cubic           3.3254          -0.4215         -1.686          1.1661 | 
| 393 |  |  | CH2     CH      CH      CH2     Cubic           3.3254          -0.4215         -1.686          1.1661 | 
| 394 |  |  | CH2     CH2     CH2     CH      Cubic           5.9602          -0.2568         -3.802          2.1586 | 
| 395 |  |  | CH2     CH2     CH      CH      Cubic           3.3254          -0.4215         -1.686          1.1661 | 
| 396 |  |  | CH2     CH      CH2     CH      Cubic           3.3254          -0.4215         -1.686          1.1661 | 
| 397 |  |  | CH2     CH      CH      CH      Cubic           3.3254          -0.4215         -1.686          1.1661 | 
| 398 |  |  | CH      CH2     CH2     CH      Cubic           5.9602          -0.2568         -3.802          2.1586 | 
| 399 |  |  | CH      CH2     CH      CH      Cubic           3.3254          -0.4215         -1.686          1.1661 | 
| 400 |  |  | CH      CH      CH      CH      Cubic           3.3254          -0.4215         -1.686          1.1661 | 
| 401 |  |  | TB1     TB1     TB1     TB1     Cubic           5.9602          -0.2568         -3.802          2.1586 | 
| 402 |  |  | TB2     TB2     TB2     TB2     Cubic           5.9602          -0.2568         -3.802          2.1586 | 
| 403 |  |  | TB3     TB3     TB3     TB3     Cubic           5.9602          -0.2568         -3.802          2.1586 | 
| 404 |  |  | TE1     TB1     TB1     TB1     Cubic           5.9602          -0.2568         -3.802          2.1586 | 
| 405 |  |  | TE2     TB2     TB2     TB2     Cubic           5.9602          -0.2568         -3.802          2.1586 | 
| 406 |  |  | TE3     TB3     TB3     TB3     Cubic           5.9602          -0.2568         -3.802          2.1586 | 
| 407 |  |  |  | 
| 408 |  |  | //Charmm | 
| 409 |  |  | //Atom1 Atom2   Atom3   Atom4   Charmm          Kchi            n               delta           [Kchi           n               delta] | 
| 410 |  |  | //V_Charmm =  Kchi(1 + cos(n(chi) - delta)) | 
| 411 |  |  | //Kchi: kcal/mole | 
| 412 |  |  | //n: multiplicity | 
| 413 |  |  | //delta: degrees | 
| 414 |  |  | //in some cases, a Charmm may have two or three terms. If n is equal to 0, it falls back to harmonic form | 
| 415 |  |  |  | 
| 416 |  |  | //Quartic | 
| 417 |  |  | //Atom1 Atom2   Atom3   Atom4   Quartic         k4              k3              k2              k1              k0  ( all are kcal/mol ) | 
| 418 |  |  | //V_Quartic = k4(cos phi)^4 + k3(cos phi)^3 + k2(cos phi)^2 + k1(cos phi) + k0 | 
| 419 |  |  |  | 
| 420 |  |  | //Polynomial | 
| 421 |  |  | //Atom1 Atom2   Atom3   Atom4   Polynomial      i       Ki      [j      Kj] | 
| 422 |  |  | //VPolynomial = Ki (cos phi)^i + ... + Kj (cos phi)^j | 
| 423 |  |  |  | 
| 424 |  |  | end TorsionTypes | 
| 425 |  |  |  | 
| 426 |  |  |  |