国内外有关书籍在谈到AB_5型分子的结构时,多指出中心原子A采用sp~3d(或dsp~3)杂化,具有三角双锥(如PF_5、PCl_5)或正方锥(如IF_5、BrF_5)的立体化学构型;至于中心原子A采用什么样形式的sp~3d(或dsp~3)杂化以及五个杂化轨道的线性组合方式,却均未谈及。而用普通的求s、p杂化轨道的方 When referring to the structure of AB_5 molecule, relevant books at home and abroad often point out that central atom A is hybridized by sp ~ 3d (or dsp ~ 3) and has triangular double cones (such as PF_5 and PCl_5) or square cones (such as IF_5 and BrF_5 ), And the sp ~ 3d (or dsp ~ 3) hybrids of the central atoms A and the linear combination of the five hybrid orbits are not mentioned. And use ordinary s, p hybrid orbit side