Accuracy

as(v)o4(-) (dayqav) r   3994 As(V)O4(-) (DAYQAV) (Geo)

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    #  Species Formula
  3984 Arsenic tricyanide (Geo)C3N3As
  3985 As(V)C3O (ASOXCA) (Geo)C3H9OAs
  3986 As(V)C3O (ASOXCA)C3H9OAs
  3987 As(OH)3H3O3As
  3988 As(OH)3 (Geo)H3O3As
  3989 Trimethyl arseniteC3H9O3As
  3990 As(V)O3C (ARSACP) (Geo)C6H7O3As
  3991 As(V)O3C (ARSACP)C6H7O3As
  3992 Triethyl arseniteC6H15O3As
  3993 Tri-n-propyl arseniteC9H21O3As
  3994 As(V)O4(-) (DAYQAV) (Geo) H2O4As
  3995 As(V)O4(-) (DAYQAV)H2O4As
  3996 As(V)O5 (HTOASP) (Geo)C4H9O5As
  3997 As(V)O5 (HTOASP)C4H9O5As
  3998 Arsenic trifluorideF3As
  3999 Arsenic trifluoride (Geo)F3As
  4000 Arsenic pentafluorideF5As
  4001 Arsenic pentafluoride (Geo)F5As
  4002 As(V)F6(-) (BONMOG) (Geo)F6As
  4003 As(V)F6(-) (BONMOG)F6As
  4004 Triperfluoromethylarsine (Geo)C3F9As


REF: The Cambridge Structural Database: a quarter of a million crystal structures and rising. F. H. Allen, Acta Cryst. B58, 380-388, (2002)
  
 CHARGE=-1 PM7
As(V)O4(-) (DAYQAV)
 <As-O> <As=O><O-As=O> GR=CCDC
 As     0.00000000 +0    0.0000000 +0    0.0000000 +0     0     0     0
  O     1.70114800 +1    0.0000000 +0    0.0000000 +0     1     0     0
  O     1.66263400 +1  105.3704550 +1    0.0000000 +0     1     2     0
  O     1.83080625 +1   99.5447393 +1  109.0299134 +1     1     2     3
  H     0.96038862 +1  111.2195817 +1  -95.8739529 +1     4     1     2
  O     1.58808577 +1  108.8039516 +1  114.0259592 +1     1     2     4
  H     0.96554100 +1  116.6965599 +1  159.7345930 +1     2     1     3