学科分类
/ 1
1 个结果
  • 简介:ThesuitabilityofcalculatingatomicmultipolemomentsfromAM1wavefunctionsbycumulativepotential-derivedmethodhasbeeninvestigated.ItisshownthatthismethodhasafasterconvergenceofthefittingprocessandgivesabetterdescriptionofthechargedistributionthantheoriginalPDmethod.Atomicchargesobtainedinthiswayareofcomparablequalitywith6-31G.dataandthecalculateddipolemomentsareclosertotheexperimentaldatathanthevaluescomputeddirectlyfromtheAM1charges.Theresultsdemonstratethattheatomicmultipolemomentshigherthanmonopolemomentcanbeusedtosupplementtheatomicchargetoobtainamoreaccuratedescriptionofchargedistribution.Forthesakeofcomparison,boththeWilliamsfittingpotentialsurfaceandtheConnollyoneareusedinthecalculation.

  • 标签: ATOMIC charge ATOMIC MULTIPOLE MOMENT CUMULATIVE