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52 Methylidyne

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  #           Species Formula
  42 B5H9 (Geo)H9B5
  43 Pentaborane(9)H9B5
  44 B5H11 (Geo)H11B5
  45 Pentaborane(11)H11B5
  46 B6H10 (Geo)H10B6
  47 Hexaborane(10)H10B6
  48 B10H14 (Geo)H14B10
  49 Decaborane(14)H14B10
  50 Carbon, cationC
  51 Carbon, atomC
  52 Methylidyne CH
  53 Methylene, singlet (Geo)CH2
  54 Methylene, triplet (Geo)CH2
  55 Methylene, singletCH2
  56 Methylene, tripletCH2
  57 Methyl, cationCH3
  58 Methane (Geo)CH4
  59 MethaneCH4
  60 Methyl lithium (Geo)CH3Li
  61 Methyl lithiumCH3Li
  62 Carbon, dimer (Geo)C2



DHf: 142.4 kcal/mol,     REF: R. D. Levin, S. G. Lias, "Ionization Potentials and Appearance Potential Measurements," 1971-1981, Natl. Stand. Ref. Data Ser., Natl. Bur. Stand. 71, (1982), Cat. No. C13.48:71.

  
 OPEN(1,1)
Methylidyne
 H=142.4 HR=LLNBS82
 XX         1.00000000 +0    0.0000000 +0    0.0000000 +0 
  C         1.00000000 +0    0.0000000 +0    0.0000000 +0    1    0    0       0.0000
  H         1.07486278 +1   90.0000000 +0    0.0000000 +0    2    1    0       0.0000