Chem. J. Chinese Universities ›› 2003, Vol. 24 ›› Issue (4): 675.

• Preface • Previous Articles     Next Articles

Ab initio Study on the Nonlinear Optical Properties of (H2O)2 and (HCl)2

WANG Yi1,2, LI Zhi Ru1, WU Di1, HAO Xi Yun1, ZHANG Man1, CHU San Yang3, SUN Chia Chung1   

  1. 1. State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China;
    2. Department of Basis, China Criminal Police College, Shenyang 110035, China;
    3. Department of Chemistry, Taiwan Tsinghua University, Tsinchu 30043, China
  • Received:2002-03-20 Online:2003-04-24 Published:2003-04-24

Abstract: The static dipole moments(μ0), polarizabilities(α0) and first hyperpolarizabilities (β0) of (H2O)2 and (HCl)2 dimers are investigated by means of ab initio methods with various basis sets, ADZ, ADZ+BF, ATZ, and ATZ+BF at MP2 level. Through analysis and comparison, we found that the results of the dimers are convergent when the basis sets are not less than ATZ and the electron correlation is important. In order to show the contributions from intermolecular interactions to nonlinear optical properties, the counterpoise method is applied. The calculated results show that the μz and β0 values of hydrogen bonding dimers (H2O)2 and (HCl)2 are smaller than those of the sums of the values of subsystems. In addition, for μz and β0, the ratios of contribution from π type H bond to that of the total intermolecular interactions in the β0 properties are small.

Key words: Ab initio, Interaction nonlinear optical properties, (H2O)2, (HCl)2

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