The complexes [Pt2L2(μ-dppm)](ClO4)2 (1) and {[Pt2L2(μ-dppm)Li(CH3CN)2](ClO4)3}n (2), where HL is 6-[4-(diethoxyphosphorylmethyl)phenyl]-2,2′-bipyridinyl and dppm is bis(diphenylphosphino)methane,...The complexes [Pt2L2(μ-dppm)](ClO4)2 (1) and {[Pt2L2(μ-dppm)Li(CH3CN)2](ClO4)3}n (2), where HL is 6-[4-(diethoxyphosphorylmethyl)phenyl]-2,2′-bipyridinyl and dppm is bis(diphenylphosphino)methane, have been synthesized and characterized. In complex 1 the platinum(Ⅱ) center adopts a distorted square planar coordination geometry. The polymer 2 exhibits a "stairstep" configuration with one-dimensional Pt(Ⅱ)N^N^CPO- Li(Ⅰ)-OPC^N^ NPt(Ⅱ) mixed-metal units which are linked through dppm. Both complexes have metal-metal interaction with Pt- Pt distances of 3.325(2) and 3.1432(9) A, respectively, and display strong metal-metal-to-ligand charge-transfer (MMLCT) triplet state emission. The density-functional-theory calculation was used to interpret the absorption spectra of the complexes.展开更多
文摘The complexes [Pt2L2(μ-dppm)](ClO4)2 (1) and {[Pt2L2(μ-dppm)Li(CH3CN)2](ClO4)3}n (2), where HL is 6-[4-(diethoxyphosphorylmethyl)phenyl]-2,2′-bipyridinyl and dppm is bis(diphenylphosphino)methane, have been synthesized and characterized. In complex 1 the platinum(Ⅱ) center adopts a distorted square planar coordination geometry. The polymer 2 exhibits a "stairstep" configuration with one-dimensional Pt(Ⅱ)N^N^CPO- Li(Ⅰ)-OPC^N^ NPt(Ⅱ) mixed-metal units which are linked through dppm. Both complexes have metal-metal interaction with Pt- Pt distances of 3.325(2) and 3.1432(9) A, respectively, and display strong metal-metal-to-ligand charge-transfer (MMLCT) triplet state emission. The density-functional-theory calculation was used to interpret the absorption spectra of the complexes.