solution. The single crystal absorption spectra of PBHS, PIHS, PBSW, and PISW have been investigated at 4.2 K. The intense optical absorption due to intervalence charge-transfer transition from Pt(II) to Pt(IV) has been observed for the light polarized parallel to the Pt chain axis (E//chain). From the comparison of the energy of the intervalence charge-transfer absorption edges in PBHS, PBSW, and PISW
一些类似于 Wolffram 红盐的新型卤素桥连混合价
铂配合物的合成和光学性质,[Pt(en)2][PtBr2(en)2](HSO4)4 (PBHS),[Pt(en)2] [PtI2(en)2](HSO4)4·4H2O (
PIHS), 和 [Pt(en)2][PtX2](en)2](SO4)2·6H2O X=Br(PBSW), I(
PISW) )}, 报告。粉末 X 射线衍射图表明 PBHS 与 [Pt(en)2][PtCl2(en)2](HSO4)4 (PCHS) 是同晶的,并且 PBSW 和
PISW 是同晶的。
硫酸氢盐 PBHS 和
PIHS 从
硫酸水溶液中结晶,而
硫酸盐 PBSW 和
PISW 从
水溶液中结晶。PBHS、
PIHS、PBSW 和
PISW 的单晶吸收光谱已在 4.2 K 下进行了研究。对于平行于 Pt 链轴 (E//chain) 的偏振光,已经观察到由于从 Pt(II)