Accuracy

(c6h5)-se-se-(c6h5)   4089 (C6H5)-Se-Se-(C6H5)

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    #  Species Formula
  4079 Selenium dichloride (Geo)Cl2Se
  4080 Selenium dichlorideCl2Se
  4081 Selenyl chloride (Geo)OCl2Se
  4082 SeCl6(=) (Geo)Cl6Se
  4083 Zinc selenideZnSe
  4084 Germanium selenideGeSe
  4085 Germanium selenide (Geo)GeSe
  4086 Arsenic selenideAsSe
  4087 Carbon diselenideCSe2
  4088 Me-Se-Se-Me (Geo)C2H6Se2
  4089 (C6H5)-Se-Se-(C6H5) C12H10Se2
  4090 C6H5-CH2-Se-Se-CH2-C6H5C14H14Se2
  4091 ClSeSeClCl2Se2
  4092 Diselenium dichloride (Geo)Cl2Se2
  4093 Mn(CO)3ClSe2 (GONTIM) (Geo)C7H10O3ClMnSe2
  4094 Tetramethyldiselenagermacyclohexane (Geo)C7H16GeSe2
  4095 Selenium, trimerSe3
  4096 P4Se3 (Geo)P4Se3
  4097 Se4Cl16Cl16Se4
  4098 Se4Cl16 (Geo)Cl16Se4
  4099 Bromine, cation (Br(+))Br


ΔHf: 56.7 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.
  
 PM7
(C6H5)-Se-Se-(C6H5)
 H=56.72 HR=NIST
  C     0.00000000 +0    0.0000000 +0    0.0000000 +0     0     0     0
  C     1.39423855 +1    0.0000000 +0    0.0000000 +0     1     0     0
  C     1.39458039 +1  119.9850262 +1    0.0000000 +0     2     1     0
  C     1.39385238 +1  120.0921437 +1   -0.5738907 +1     3     2     1
  C     1.39475131 +1  119.9328034 +1    0.6039966 +1     4     3     2
  C     1.38974447 +1  119.5915775 +1   -0.0609829 +1     1     2     3
  C     4.61191831 +1  109.6297082 +1  -48.3562103 +1     1     2     3
  C     1.39429640 +1  109.3330119 +1 -104.5587722 +1     7     1     6
  C     1.39454851 +1  119.9687577 +1  -64.2825660 +1     8     7     6
  C     1.39386490 +1  120.1039351 +1   -0.4924739 +1     9     8     7
  C     1.39467071 +1  119.9293762 +1    0.6849840 +1    10     9     8
  C     1.38970850 +1  119.6028820 +1   -0.2848932 +1     7     8     9
 Se     1.91136701 +1  120.7033432 +1 -178.8640246 +1     6     1     2
 Se     1.91109566 +1  120.7198673 +1 -178.4876390 +1    12     7     8
  H     1.08998769 +1  119.8544385 +1 -179.8382072 +1     1     2     3
  H     1.08804329 +1  119.9560901 +1  179.7526107 +1     2     1     6
  H     1.08886306 +1  119.9660702 +1  179.4221626 +1     3     2     1
  H     1.08821467 +1  120.1553248 +1 -179.8793388 +1     4     3     2
  H     1.08996828 +1  119.7558314 +1  179.4261727 +1     5     4     3
  H     1.09004857 +1  119.8333108 +1 -179.9996212 +1     7     8     9
  H     1.08799626 +1  119.9809670 +1  179.5765547 +1     8     7    12
  H     1.08891607 +1  119.9663622 +1  179.5185666 +1     9     8     7
  H     1.08819882 +1  120.1635997 +1 -179.8245843 +1    10     9     8
  H     1.08998181 +1  119.7455675 +1  179.2709561 +1    11    10     9