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ISSN 1000-6818CN 11-1892/O6CODEN WHXUEU
Acta Phys Chim Sin >> 2003,Vol.19>> Issue(02)>> 125-129     doi: 10.3866/PKU.WHXB20030207         中文摘要
The Stability of Phosphaalkynes R-C≡P (R=-BH2, -CH3,-NH2, -OH) and Their Isomers
Yu Hai-Tao;Chi Yu-Juan;Fu Hong-Gang;Li Ze-Sheng;Sun Jia-Zhong
College of Chemistry and Chemical Engineering, Heilongjiang University, Harbin 150080;State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023
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B3LYP and CCSD(T) methods were employed to investigate the systems of R-C≡P(R=-BH2, -CH3,-NH2, -OH). The results indicate that isomers P≡C-BH2 and CH3-C≡P containing C≡P triple bond are thermodynamically the most stable species in BH2-C≡P and CH3-C≡P systems, respectively. But in the systems of HO-C≡P and NH2-C≡P, H-P=C=O and N≡C-PH2 containing C≡N triple bond are thermodynamically the most stable species, respectively. The calculated results on the kinetic stability indicate that for R-C≡P(R=-BH2,-NH2) systems, in which no experimental information are available, five isomers are kinetically stable. In HO-C≡P system, two kinetically stable species are located. Isomer H-P=C=O has been detected in experiment, and in view of higher kinetic stability, another isomer HO-C≡P should be experimentally observable. For CH3-C≡P system, isomer CH3-C≡P has been observed in experiment, and another kinetically stable isomer HC≡C-PH2 ought to be detected in future experiments.

Keywords: Phosphaalkyne   Isomerization   Kinetic stability  
Received: 2002-06-04 Accepted: 2002-07-15 Publication Date (Web): 2003-02-15
Corresponding Authors: Fu Hong-Gang Email: fuhg@hlju.edu.cn


Cite this article: Yu Hai-Tao;Chi Yu-Juan;Fu Hong-Gang;Li Ze-Sheng;Sun Jia-Zhong. The Stability of Phosphaalkynes R-C≡P (R=-BH2, -CH3,-NH2, -OH) and Their Isomers[J]. Acta Phys. -Chim. Sin., 2003,19 (02): 125-129.    doi: 10.3866/PKU.WHXB20030207
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