PM7 Accuracy

hpo3   1984 HPO3

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    #  Species Formula
  1974 Tris(diethylamino)phosphineC12H30N3P
  1975 Li(I)N3P (GEDDOI) (Geo)H33LiC21N3P
  1976 Phosphorus oxideOP
  1977 Phosphorus oxide (Geo)OP
  1978 HPOHOP
  1979 Trimethylphosphine oxideC3H9OP
  1980 Triphenyl phosphine oxide (Geo)C18H15OP
  1981 Triphenyl phosphine oxideC18H15OP
  1982 Phosphorus dioxideO2P
  1983 Phosphorus trioxide, anionO3P
  1984 HPO3 HO3P
  1985 Methylphosphonic acidCH5O3P
  1986 Ethylphosphonic acidC2H7O3P
  1987 Trimethyl phosphiteC3H9O3P
  1988 Triethyl phosphiteC6H15O3P
  1989 Di-isopropyl ethylphosphonateC8H19O3P
  1990 Tri-isopropyl phosphiteC9H21O3P
  1991 Methyl phosphate anionCH4O4P
  1992 Methyl phosphateCH5O4P
  1993 Ethylene phosphate anion (Geo)C2H4O4P
  1994 Ethylene phosphate anionC2H4O4P


DHf: -135.0 kcal/mol,     REF: M. Henchman, A. A. Viggiano, J. F. Paulson, A. Freeman, J. Wormhoudt, J. Am. Chem. Soc., 107, 1253 (1985).
  
 PM7
HPO3
 H=-135,15 HR=HVPF1985
  O     0.00000000  0    0.0000000  0    0.0000000  0     0     0     0
  P     1.56948728  1    0.0000000  0    0.0000000  0     1     0     0
  O     1.43267428  1  109.5080234  1    0.0000000  0     2     1     0
  O     1.43644089  1  114.7216445  1  179.9384356  1     2     1     3
  H     1.02476984  1  111.6231694  1 -179.9518480  1     1     2     3