Accuracy

hydrazine    589 Hydrazine

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    #  Species Formula
   579 N-MethylcarbazoleC13H11N
   580 1,2,3,4-Tetrahydro-N-methylcarbazoleC13H15N
   581 9-Ethyl-9H-carbazoleC14H13N
   582 TetradecanenitrileC14H27N
   583 DioctylamineC16H35N
   584 TriphenylamineC18H15N
   585 TrioctylamineC24H51N
   586 Nitrogen (Geo)N2
   587 NitrogenN2
   588 DiazeneH2N2
   589 Hydrazine H4N2
   590 BH3-NH3, dimer (Geo)H12B2N2
   591 DiazomethaneCH2N2
   592 N=N-CH2-CH2N2
   593 MethylhydrazineCH6N2
   594 Cyanogen (Geo)C2N2
   595 CyanogenC2N2
   596 Dimethyldiazene (Geo)C2H6N2
   597 1,1-DimethylhydrazineC2H8N2
   598 1,2-DimethylhydrazineC2H8N2
   599 EthylenediamineC2H8N2


ΔHf: 22.8 kcal/mol,     REF: M. W. Chase, C. A. Davies, J. R. Downey, D. R. Frurip, R. A. McDonald, A. N. Syverud, JANAF Thermochemical Tables, Third Edition, J. Phys. Chem. Ref. Data 14, Suppl. 1 (1985).
  
 PM7
Hydrazine
 HR=JANAF86 H=22.8
  N     0.00000000 +0    0.0000000 +0    0.0000000 +0     0     0     0
  N     1.44700151 +1    0.0000000 +0    0.0000000 +0     1     0     0
  H     1.02103736 +1  106.7533719 +1    0.0000000 +0     2     1     0
  H     1.02076490 +1  106.9391429 +1  178.2567362 +1     1     2     3
  H     1.02102788 +1  106.7546105 +1  -68.6658417 +1     1     2     3
  H     1.02077493 +1  106.9374223 +1  178.2632331 +1     2     1     5