C Parameters of the SCCOR term
      double precision v1sccor,v2sccor
      integer nterm_sccor
      common/torsion/v1sccor(maxterm_sccor,-ntyp:ntyp,-ntyp:ntyp),
     &    v2sccor(maxterm_sccor,-ntyp:ntyp,-ntyp:ntyp),
     &    nterm_sccor(-ntyp:ntyp,-ntyp:ntyp)