稀土元素卤化物△_fH_m~θ的拓扑化学研究

Studies On the Relationship Between △_fH_m~θ of Halide of rare Earth and its Molecular Using Tpology

根据拓扑理论，提出了一个新的健参数拓扑指数YM，并用YM对86个稀土元素卤化物的标准生成焓（）进行拟合，相关系数为0．9983．

On the based of topological theory of edecular, a new bood-paraneter, the topological indexYM, is prope. This paper obtains a lot of linear regression equations of the relationshipbetween standard formative enthalpy - of halide of rare earth AX3 type and toplolgicalindex YM: 376. 8YM -1277.1 (kj. mol-1 ). These equations with high correlationcocfficients (0.9983 ) can be used for the accurate deseription of the progressive changes ofstandard entralpy of formative for the compounds.