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[C(r2,2’-bpY)_3]so_4的电子光谱有四个吸收峰,λ_1=486.4nm,λ_2=393.4nm,λ_3=306nm,λ_4=242nm.λ_1和λ_2都是d→d光谱,分别是电子从~3T_1g(P)跃迁到~3Eg和~3T_2g而产生的。λ_3和λ_4都是配体光谱,λ_3属于n→π*跃迁,入_4属于π→π*跃迁。场强参数D_q值为2225cm~(-1),大约是六水合铬(11)的D_q值的1.4～1.76倍。电子排斥参数B值约770cm~(-1),电子云扩展系数β≤0.93。配体与中心离子之间只形成很弱的σ键,而无授受(π)键。
The electron spectra of [C (r2,2’-bpY) _3] so_4 have four absorption peaks, λ_1 = 486.4nm, λ_2 = 393.4nm, λ_3 = 306nm and λ_4 = 242nm. Both λ_1 and λ_2 are d → d spectra, Respectively, the transition from ~ 3T_1g (P) to ~ 3Eg and ~ 3T_2g. Both λ_3 and λ_4 are ligand spectra, λ_3 belongs to n → π * transition, and π_4 belongs to π → π * transition. The field strength parameter D_q value is 2225 cm -1, which is about 1.4 to 1.76 times the D_q value of chromium hexachlorohydrate (11). The value of electron exclusion B is about 770cm -1, and the electron cloud expansion coefficient β is less than or equal to 0.93. Ligands and center ions form only a weak sigma bonds, but no accept (π) bonds.