[3] Chen Jiajun,Du Maolu. Investigation of the zero-field splitting and g-values of d8 ions in trigonal compounds CsMgX3∶Ni2+(X=Cl,Br,I)[J].Physica B,1996,228: 409-413.

[5] Gupta A,Talapatra D,et al. Low temperature polarized absorption spectra for Ni2+ in trigonal Ni2CdCl6·12H2O single crystals [J].J. Phys. Chem. Solids,1988,49(10): 1269-1273.

[6] Xie L H. Analysis on the optical fine structure splitting and Zeeman splitting of Fe2+ ions in ZnS crystal [J].Matt. Sci. Engi.,2000,B68: 80-84.

[7] Me L H,et al. Unified explanation for optical and high-pressure spectra of Ni2+ ions in ZnS crystal [J].J. Phys.Chem. Sol.,2003,64: 1247-1250.

[8] Newman D J,Ng Betty. The superposition model of crystal fields [J].Rep. Prop. Phys.,1989,52: 699-763.

[9] Czeslaw R,Yang Ziyuan,Yeung Yauyuen,Qin Jian. Crystal field and microscopic spin Hamiltonians approach including spin-spin and spin-other-orbit interactions for d2 and d8 ions at low symmetry C3 symmetry sites: V3+ in Al2O3 [J].Journal of Physics and Chemistry of Solids,2003,64: 1419-1428.

[11] Sugano S,Tanabe Y,Kamimura H. Multiplets of Transition Metal Ions in Crystals. [M].New York,AcademicPress,1970.

[12] Griffith J S. The Theory of Transition-Metal Ions [M].London: Cambridge University Press,1964.

[13] Ballhausen C J. Introduction to Ligand Field Theory [M].New York: Mcgiaw-Hill Press,1962.

[14] Rashin A A,Michael I,Barry H. Internal cavities and buried waters in globular proteins [J].Biochemistry,1986,25: 3619-3625.

[15] Edgar A. Electron paramagnetic resonance studies of divalent cobalt ions in some chloride salts [J].J. Phys. C,1976,9: 4303-4314.

[16] Reg S,Zalkin A,Templeton D H. Crystal structure of copper fluosilicate hexahydrate [J].Acta Cryst.,1973,B29:2748.