Accuracy

arsenic, tetramer   4031 Arsenic, tetramer

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    #  Species Formula
  4021 As(V)F4O2(2-) (PYDFAS)O2F8As2
  4022 As(III)2C4 (HIRCIU) (Geo)C4F12As2
  4023 As(III)2C4 (HIRCIU)C4F12As2
  4024 As(V)(III)C4S2 (DMSARS) (Geo)C4H12S2As2
  4025 As(V)(III)C4S2 (DMSARS)C4H12S2As2
  4026 Ti(IV)Cp2F2 (VAJXEJ) (Geo)C10H10F12TiAs2
  4027 Ti(IV)As2S2Cl2 (CIRHUG) (Geo)C18H34S2Cl2TiAs2
  4028 Arsenic, trimerAs3
  4029 As(III)S2C (MARSTA) (Geo)C5H9S3As3
  4030 As(III)S2C (MARSTA)C5H9S3As3
  4031 Arsenic, tetramer As4
  4032 As(III)O2C (ASOXAD) (Geo)C2H4O4As4
  4033 As(III)O2C (ASOXAD)C2H4O4As4
  4034 Arsenic trioxide dimerO6As4
  4035 As4O6O6As4
  4036 As4O6 (Geo)O6As4
  4037 As(III)As2C (ASMETH) (Geo)C5H15As5
  4038 As(III)As2C (ASMETH)C5H15As5
  4039 Selenium, cationSe
  4040 Selenium, atomSe
  4041 Selenyl radicalHSe


ΔHf: 34.4 kcal/mol,     REF: D. D. Wagman, W. H. Evans, V. B. Parker, R. H. Schumm, I. Halow, S. M. Bailey, K. L. Churney, R. L. Nuttall, J. Phys. Chem. Ref. Data Suppl. 11, 2 (1982).
  
 SYMMETRY PM7
Arsenic, tetramer
 H=34.39 HR=WEPS1982
 
 As     0.00000000 +0    0.0000000 +0    0.0000000 +0     0     0     0
 XX     1.57389347 +1    0.0000000 +0    0.0000000 +0     1     0     0
 As     1.57389347 +1  109.4712210 +1    0.0000000 +0     2     1     0
 As     1.57389347 +1  109.4712210 +1  120.0000000 +1     2     1     3
 As     1.57389347 +1  109.4712210 +1 -119.9999760 +1     2     1     3
 
   2  1    3    4    5