Mixed‐Valent Linear Chain Pt
<sub>2</sub>
PdPt
<sub>2</sub>
Complexes
作者:Saiko Arai、Masahiko Ochiai、Koji Ishihara、Kazuko Matsumoto
DOI:10.1002/ejic.200601247
日期:2007.5
AbstractPentanuclear linear‐chain PtPd complexes [Pt2(NH3)2X2(μ‐pivalamidato)2(CH2COCH3)]2[PdX′4]}·2CH3COCH3 (X = X′ = Cl (1a), X = Cl, X′ = Br (1b), X = Br, X′ = Cl (1c), X = X′ = Br (1d)) composed of a monomeric PdII complex sandwiched by two amidato‐bridged dimeric PtIII units were synthesized from the reaction between the acetonyl dinuclear PtIII complexes having equatorial halide ligands [Pt2(NH3)2X2(μ‐pivalamidato)2(CH2COCH3)]X″ (X = Cl (2a), Br (2b), X″ = NO3–, CH3C6H4SO3–) and K2[PdX′4] (X′ = Cl, Br). The X‐ray crystallographic analysis of 1a–1d shows that the complexes have metal–metal bonded linear Pt2PdPt2 structures. The pentanuclear PtPd complexes have either an arch backbone structure or a sigmoid backbone structure, depending on the solvent of crystallization. The UV/Vis/NIR spectra clearly show the existence of a rare charge‐transfer band from Pd to Pt in the pentanuclear PtPd complexes. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)