摘要
Ⅰ. DOUBLE SPHERE COORDINATION POINT CHARGE FIELD(DSCPCF) MODELAccording to the viewpoint of 3-centre model of diatomic bond, any mononuclear complex MX。(omitting the charge symbol for simplicity) can be considered as an entity spanned by n bonds M-X4, and in turn each bond M-X4 can be regarded as a 3-centre diatomic bond which consists of two positive cores and an effective