Chem. J. Chinese Universities

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Theoretical Study on the COCl2…NH3 and COCl2…H2S Complexes

WU Gong-Bing, YU Jian-Kang, WU Di, SUN Chia-Chung   

  1. State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China
  • Received:2005-11-19 Revised:1900-01-01 Online:2006-11-10 Published:2006-11-10
  • Contact: WU Di

Abstract: By means of ab initio calculations of MP2/aug-cc-pvtz method, the optimized geometries and frequencies of the COCl2…NH3 and COCl2…H2S complexes are obtained. The basis set superposition error(BSSE) was also considered according to the counterpoise(CP) method proposed by Boys and Bernardi. Four stationary structures of COCl2…NH3 and two stationary structures of COCl2…H2S were found. The found stationary structures can be divided into two types. In complexes Ⅰ, Ⅱ, Ⅴ the monomer lies with N(S)…C contact. In complexes Ⅲ, Ⅳ, Ⅵ the monomer lies with almost linear N(S)…Cl—C contact. The interaction energies of the first type are larger than the second type, so it's more stationary. Complex Ⅰ is the most stationary one in all of the six complexes.

Key words: Ab inito calculation, Complex, Weak interactions, Basis Set Superposition Error(BSSE)

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