Relative Bond Strengths in Tetrahedrane, Prismane, and Some of Their Aza Analogs
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abstract
Ab initio molecular orbital calculations at the 3-21G level have been employed to explore structures, bond order, and bond deviation indices for a series of aza- and diazatetrahedranes and aza-, diaza-, triaza-, and tetraazaprismanes as well as their hydrocarbon analogs. The introduction of nitrogens has the effect of strengthening C-C and some of the N-C bonds, while the presence of N-N bonds introduces a decrease in relative thermodynamic stability in the aza-prismane series. 1989 VCH Publishers, Inc.