AB_n型共价分子中大π键的推断

INFERENCE OF DELOCALIZEDπBOND FOR AB_NCOVALENT MOLECULE

以杂化轨道理论为基础，提出了一个公式ｍ＝ＶＥ＿ｔ－２Ｈ＿ｔ计算参与形成大π键的电子数，从而导出ＡＢ＿ｎ分子中存在的大π键类型。该法准确、可靠，物理意义明确，且简便易记．

A formula,m=VE_t一2Ht was proposed to calculate electron number of delo-calized π bond for A B_n cova lent moleculc based on atomic orbital hybridization theory,The existing in AB_n molecule is obtained. The method of calculation is not only accuracy,reli-ability but also implicity and convencience and easy memory.