摘要:
The stabilization energy Delta E(n) and four typical properties of hydrogen bond F-H . . .F in chain-like and cyclic (HF)(n) clusters (n = 1-5) have been calculated using MP2 and three DF levels of theory with the Gaussian 98 program, and 6-31 ++G** bases set. The results demonstrate that the extra-additive or cooperative behavior in (HF)(n) clusters is very obvious. In addition, we studied much larger chain-like (HF)(n) (n = 6, 9, 12, 18, 24) clusters using one of these DF methods.