31. The vibrational spectrum is indicative of the presence of a triple bond between the nitrogen and carbon atoms. 32. This holds true with double and triple bonds , as you must break them multiple times to break their structure. 33. Dicyanopolyynes are composed of a chain of carbon atoms with alternating single and triple bonds , terminated by nitrogen atoms. 34. This also allows double and triple bonds to be approximated by multiple single bonds ( Fig . 3 ). 35. For alkynes the most effective orientation is the external field in parallel with electrons circulation around the triple bond . 36. This is done by mutually sharing three pairs of electrons between the two carbon atoms to form a triple bond . 37. The single bond has the capacity for rotation, a property not possessed by the double bond or the triple bond . 38. The Tersoff's model could describe single, double and triple bond energies in carbon structures such as in hydrocarbons and diamonds. 39. A carbon carbon triple bond is also present in marketed drugs such as the antiretroviral Efavirenz and the antifungal Terbinafine. 40. The carbon carbon triple bond places all four atoms in the same straight line, with CCH bond angles of 180?
