21
ethyne and pentane dimer. Min dist:5.71715220332cm distance: 4.75
C	 0.04511028  0.0183689  -0.60405422
H	 0.12485276  0.05007143 -1.66242836
C	-0.04548362 -0.0181125   0.60404277
H	-0.12447943 -0.05032783  1.6624398 
C	 3.77911821  5.64796969  6.92835961
H	 2.96418509  6.19004115  6.44777421
H	 3.37665578  4.69888253  7.28236262
H	 4.09749042  6.22063522  7.79834982
C	 4.92357145  5.42012808  5.94972734
H	 5.7407331   4.89648244  6.4512761 
H	 5.32665195  6.38054865  5.62117699
C	 4.49165601  4.62502788  4.72563848
H	 4.11398135  3.64767092  5.0407879 
H	 3.65815518  5.14059789  4.24145849
C	 5.61201067  4.43287034  3.71320215
H	 6.43816485  3.89626861  4.18544563
H	 6.00138576  5.41287593  3.42903594
C	 5.15084356  3.68069016  2.47183583
H	 4.34042893  4.21621595  1.97651337
H	 5.95841015  3.551832    1.75253923
H	 4.77655756  2.69126255  2.73451629
