PM7 Accuracy Date:Mon Feb 11 04:20:05 2019

selenium, cation   4041 Selenium, cation

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    #  Species Formula
  4031 As(III)S2C (MARSTA) (Geo)C5H9S3As3
  4032 As(III)S2C (MARSTA)C5H9S3As3
  4033 Arsenic, tetramerAs4
  4034 As(III)O2C (ASOXAD) (Geo)C2H4O4As4
  4035 As(III)O2C (ASOXAD)C2H4O4As4
  4036 Arsenic trioxide dimerO6As4
  4037 As4O6O6As4
  4038 As4O6 (Geo)O6As4
  4039 As(III)As2C (ASMETH) (Geo)C5H15As5
  4040 As(III)As2C (ASMETH)C5H15As5
  4041 Selenium, cation Se
  4042 Selenium, atomSe
  4043 Selenyl radicalHSe
  4044 Hydrogen selenide (Geo)H2Se
  4045 Hydrogen selenideH2Se
  4046 Selenium carbide (Geo)CSe
  4047 Methylselenium hydride (Geo)CH4Se
  4048 DimethylseleniumC2H6Se
  4049 Ethyl selanol (anti) (Geo)C2H6Se
  4050 Dimethylselenium (Geo)C2H6Se
  4051 Selenophene (Geo)C4H4Se


ΔHf: 276.5 kcal/mol,     REF: NIST Chemistry WebBook, NIST Standard Reference Database, No. 69; W. G. Mallard, P. J. Linstrom, Eds., National Institute of Standards and Technology, Gaithersberg, http://webbook.nist.gov/chemistry.
  
 CHARGE=1 OPEN(3,3) SCFCRT=1.D-3 PM7
Selenium, cation
 HR=NIST HWT=0.5 H=276.49
 Se     0.00000000 +0   0.00000000 +0   0.00000000 +0