Accuracy

1,4-dicyclopropylbuta-1,3-diyne    279 1,4-Dicyclopropylbuta-1,3-diyne

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    #  Species Formula
   269 Cyclopropyl benzeneC9H10
   270 1,3,5-Trimethyl cyclohexaneC9H18
   271 cis-cis-trans-1,3,5-Trimethyl cyclohexaneC9H18
   272 3,3-DiethylpentaneC9H20
   273 n-NonaneC9H20
   274 Tri-isopropylboraneH21BC9
   275 TripropylboraneH21BC9
   276 AzuleneC10H8
   277 Naphthalene (Geo)C10H8
   278 NaphthaleneC10H8
   279 1,4-Dicyclopropylbuta-1,3-diyne C10H10
   280 1-Butynl benzeneC10H10
   281 2a,4a,6a,6b-TetrahydrocyclopentapentaleneC10H10
   282 BulvaleneC10H10
   283 DiisopropenyldiacetyleneC10H10
   284 Tricyclo[6.2.0.0]deca-1(8),2,6-trieneC10H10
   285 1,2,6,7-CyclodecatetraeneC10H12
   286 Dispiro[2.2.2.2]deca-4,9-dieneC10H12
   287 TetralinC10H12
   288 (1-Methylpropyl) benzeneC10H14
   289 (2-Methylpropyl) benzeneC10H14


ΔHf: 134.3 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
1,4-Dicyclopropylbuta-1,3-diyne
 H=134.3 HR=NIST
  C     0.00000000 +0    0.0000000 +0    0.0000000 +0     0     0     0
  C     1.52453111 +1    0.0000000 +0    0.0000000 +0     1     0     0
  C     1.52453068 +1   59.0977854 +1    0.0000000 +0     1     2     0
  C     6.61800006 +1  119.4010968 +1 -108.5276488 +1     1     2     3
  C     1.52450403 +1  119.1605682 +1 -105.3166615 +1     4     1     2
  C     1.52447573 +1   59.0950161 +1  108.5195419 +1     4     5     1
  C     1.41465715 +1  119.1612415 +1 -108.4515222 +1     4     5     6
  C     1.21670249 +1  179.8255521 +1  -69.0176014 +1     7     4     5
  C     1.41456702 +1  119.2309495 +1 -108.4416830 +1     1     2     3
  C     1.35542069 +1  179.8582360 +1  150.7058916 +1     8     7     5
  H     1.10388512 +1  117.7517873 +1  107.3891335 +1     1     2     3
  H     1.08590285 +1  119.1849425 +1 -110.2531629 +1     2     1     3
  H     1.08777560 +1  119.2592573 +1  109.6856657 +1     2     1     3
  H     1.08778398 +1  119.2590176 +1 -109.6842131 +1     3     1     2
  H     1.08592094 +1  119.1887425 +1  110.2470553 +1     3     1     2
  H     1.10385004 +1  117.7856048 +1  107.4012542 +1     4     5     6
  H     1.08587315 +1  119.2033609 +1 -110.2642463 +1     5     4     6
  H     1.08776423 +1  119.2518478 +1  109.6702567 +1     5     4     6
  H     1.08776281 +1  119.2480325 +1 -109.6787000 +1     6     4     5
  H     1.08590343 +1  119.2070877 +1  110.2536579 +1     6     4     5