[Relation between complexes iotramolecular transfer and structure of [M(SS) (NN)](M = Zn2+, Cd2+)].

The title complexes of [M(SS)(NN)](M = Zn2+, Cd+; SS = 1,2-dicyano 1,2-ethylene -dithiolate or maleonitriledithiolate; NN = 5-nitro-1,10 phenanthroline) were synthesized. The electronic absorption spectra of complexes [M(SS)(NN)] in DMSO, DMF, acetone and Py were reported. The spectra absorption bands 270-280 nm, 320-350 nm and 350-390 nm are the intraligand pi(b) --> pi* transfer of ligand mnt(2-) and 5-NOz-phen. The spectra absorption band 400-500 nm is intramolecular charge transfer (LL'CT) from a ligand (mnt(2-)) to another ligand (5-NO2- phen) The relation between electronic spectra absorption band and correlative transition in the molecular orbital energy level diagram of the complexes was investigated. The LL'CT band of the title complexes is weaker by comparison with M(SS) (NN) (M = Co2+, Fe2+, Ni2+ and Cu2+). The LL'CT band of [M(SS) (NN)](M = Zn2+, Cd2+) (7b2 to 7b1) is symmetry forbidden.

[Infrared spectra and coordinated mode of manganese (II), iron (II), cobalt (II) complexes with dithiolene and 1, 10-phenanthroline-5, 6-dione ligands].

The infrared spectra and far-infrared spectra of M(mnt)(phen-5, 6-dione) [M= Manganese(II), Iron(II), Cobalt(II). mnt2- = 1, 2-dicyano-1, 2-ethylenedithiolate or maleonitriledithiolate, phen-5, 6-dione = 1, 10-phenanthroline-5, 6-dione] are reported in detail. In infrared spectra and far-infrared, characteristic v (C[triplebond]N) , v (C==)) , (C==C) v (C-N), v (C-S), v (M-S) and V(M-N) are very strong. Far-infrared spectra shows that M-S bond is slightly strong than M-N bond. Through comparing infrared spectra, simple regular coordinate mode of M(mnt) (phen-5, 6-dione) is analysed. The relation between infrared spectra and structure of the title complexes is discussed. In the title complexes, transition metals ion with 1, 2-dicyano-1, 2-ethylenedithiolate and 1, 10-phenanthroline-5, 6-dione form quadridentate distortion tetrahedral configuration molecules. The symmetry is approximate to C2 and C2v.

[Electronic spectra and photooxidation characteristics of diimine-mixed ligand, complexes of nickel(II), copper(II) and zinc(II)].

The electronic absorption spectra of complexes M(mnt) (5-NO2-phen)(M = Ni(II), Cu(II) and Zn(II); mnt2- = 1, 2-dicyano-1, 2-ethylenedithiolate or maleonitriledithiolate; 5-NO2-phen = 5-nitro-1, 10-phenanthroline) in DMSO, DMF, DME, C2H5OH, THF, CH3CN and CH2Cl2 were reported. The relation between electronic spectral absorption band and the correlative transition in the molecular orbital energy level diagram of the complex was investigated. The essential characteristics of interligand charge transfer transition (LL'CT), and the relation between LL'CT and central metal ion, configuration, substituent electronic effect of ligands of the complexes and solvent effect were discussed. The photooxidation characteristics of complexes of M(mnt)(5-NO2-phen) in DMSO were ascertained.