Accuracy

cr(co)4, anion   3159 Cr(CO)4, anion

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    #  Species Formula
  3149 (C6H6)Cr(CO)3 (Geo)C9H6O3Cr
  3150 Cr(CO)3(C6H6)C9H6O3Cr
  3151 Cr(CO)3(C6H5CH3)C10H8O3Cr
  3152 Cr(CO)3(C7H8)C10H8O3Cr
  3153 1,3,5-Trimethylbenzene chromium tricarbonylC12H12O3Cr
  3154 Cr(CO)3(C10H8)C13H8O3Cr
  3155 Hexamethylbenzene chromium tricarbonylC15H18O3Cr
  3156 Cr(CO)3(C6H5-NMe2)C11H11NO3Cr
  3157 CrO4, anionO4Cr
  3158 Chromate ion (Geo)O4Cr
  3159 Cr(CO)4, anion C4O4Cr
  3160 Cr(CO)3(C6H5-CHO)C10H6O4Cr
  3161 Cr(CO)3(Ph-O-Me)C10H8O4Cr
  3162 Cr(CO)4(C7)C11H8O4Cr
  3163 Cr(O-t-butyl)4C16H36O4Cr
  3164 Cr(CO)4(Py)2C14H10N2O4Cr
  3165 Cr(CO)4(Piperidine)2C14H20N2O4Cr
  3166 Cr(NO)4N4O4Cr
  3167 Cr(NO)4 (Geo)N4O4Cr
  3168 Cr(CO)5C5O5Cr
  3169 Cr(CO)5(Py)C10H5NO5Cr


ΔHf: -66.1 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.
  
 RELSCF=100 SYMMETRY SHIFT=5 CHARGE=-1 PM7
Cr(CO)4, anion
 HR=NIST H=-66.12
 
 Cr     0.00000000 +0    0.0000000 +0    0.0000000 +0     0     0     0
  C     1.93495152 +1    0.0000000 +0    0.0000000 +0     1     0     0
  C     1.93495152 +0  109.4712210 +0    0.0000000 +0     1     2     0
  C     1.93495152 +0  109.4712210 +0  120.0000000 +0     1     2     3
  C     1.93495152 +0  109.4712210 +0 -120.0000000 +0     1     2     3
  O     1.17584358 +1  180.0000000 +0    0.0000000 +0     2     1     3
  O     1.17584358 +0  180.0000000 +0    0.0000000 +0     3     1     2
  O     1.17584358 +0  180.0000000 +0    0.0000000 +0     4     1     3
  O     1.17584358 +0  180.0000000 +0    0.0000000 +0     5     1     2
 
   2  1    3    4    5
   6  1    7    8    9