<?xml version='1.0' encoding='UTF-8'?>
<ForceField name="FF14SB-snippet" version="0.0.1">
  <FFMetaData electrostatics14Scale="0.8333" nonBonded14Scale="0.5">
    <Units energy="kJ" distance="nm" mass="amu" charge="electron_charge"/>
  </FFMetaData>
  <AtomTypes expression="epsilon*(-2*rmin**6/r**6 + rmin**12/r**12)">
    <ParametersUnitDef parameter="epsilon" unit="kcal/mol"/>
    <ParametersUnitDef parameter="sigma" unit="Å"/>
    <AtomType name="C" mass="12.01" charge="0.0" atomclass="C" definition="Carbon atom">
      <Parameters>
        <Parameter name="epsilon" value="0.359824"/>
        <Parameter name="sigma" value="0.339967"/>
      </Parameters>
    </AtomType>
  </AtomTypes>
  <BondTypes expression="kb*(b-b0)**2">
    <ParametersUnitDef parameter="kb" unit="kcal/(mol*Å**2)"/>
    <ParametersUnitDef parameter="b0" unit="Å"/>
    <BondType name="BondType-Harmonic" type1="H" type2="H">
      <Parameters>
        <Parameter name="kb" value="240.0"/>
        <Parameter name="b0" value="1.455"/>
      </Parameters>
    </BondType>
  </BondTypes>
  <AngleTypes expression="ktheta * (theta - theta0)**2">
    <ParametersUnitDef parameter="ktheta" unit="kcal/(mol*rad**2)"/>
    <ParametersUnitDef parameter="theta0" unit="degree"/>
    <AngleType name="AngleType-Harmonic-1" type1="H" type2="H" type3="H">
      <Parameters>
        <Parameter name="ktheta" value="50.0"/>
        <Parameter name="theta0" value="111.0"/>
      </Parameters>
  </AngleType>
  </AngleTypes>
  <AngleTypes expression="Kub * (AS - S0)**2">
    <ParametersUnitDef parameter="Kub" unit="kcal/(mol*Å**2)"/>
    <ParametersUnitDef parameter="S0" unit="Å"/>
    <AngleType name="AngleType-Urey_Bradley-1" type1="H" type2="H" type3="C">
      <Parameters>
        <Parameter name="Kub" value="50.0"/>
        <Parameter name="S0" value="2.14"/>
      </Parameters>
    </AngleType>
    <AngleType name="AngleType-Harmonic-3" type1="CT" type2="CT" type3="CT">
      <Parameters>
        <Parameter name="Kub" value="488.273"/>
        <Parameter name="S0" value="1.966986067"/>
      </Parameters>
    </AngleType>
  </AngleTypes>
  <DihedralTypes expression="Kchi*(cos(chi*n - delta) + 1)">
    <ParametersUnitDef parameter="Kchi" unit="kcal/mol"/>
    <ParametersUnitDef parameter="n" unit="dimensionless"/>
    <ParametersUnitDef parameter="delta" unit="degree"/>
    <DihedralType name="DihedralType-Charmm-periodic" type1="H" type2="H" type3="H" type4="H">
      <Parameters>
        <Parameter name="Kchi">
          <Value>1.6</Value>
          <Value>2.5</Value>
        </Parameter>
        <Parameter name="n">
          <Value>1.0</Value>
          <Value>2.0</Value>
        </Parameter>
        <Parameter name="delta">
          <Value>0.0</Value>
          <Value>180.0</Value>
        </Parameter>
      </Parameters>
    </DihedralType>
  </DihedralTypes>
  <DihedralTypes expression="Kpsi * (psi - psi0)**2">
    <ParametersUnitDef parameter="Kpsi" unit="kcal/(mol*rad**2)"/>
    <ParametersUnitDef parameter="psi0" unit="degree"/>
    <ImproperType name="ImproperType-Charmm-harmonic" type1="H" type2="H" type3="H" type4="C">
        <Parameters>
        <Parameter name="Kpsi" value="3.0"/>
        <Parameter name="psi0" value="0.0"/>
      </Parameters>
    </ImproperType>
  </DihedralTypes>
</ForceField>
