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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Heterometallic one-dimensional chain with tetradeca metal repetition constructed by amidate bridged dirhodium and pivalate bridged diplatinum complexes influenced by hydrogen bonding
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Heterometallic one-dimensional chain with tetradeca metal repetition constructed by amidate bridged dirhodium and pivalate bridged diplatinum complexes influenced by hydrogen bonding

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摘要

A novel heterometallic one-dimensional (1-D) chain complex, {Rh-2(acam)(4)}(3){Pt-2(OPiv)(2)(NH3)(4)}(4)(ClO4)(8) (4, acam = acetamidate, OPiv = pivalate), has been synthesized and characterized by single-crystal X-ray analysis and diffuse reflectance spectroscopy. Complex 4 comprises Rh-2(acam)(4) (i.e. Rh-2) and Pt-2(OPiv)(2)(NH3)(4)(ClO4)(2) (i.e. Pt-2), where Rh and Pt atoms are axially linked by metal-metal bonds with a repetition of -{Rh-2-Pt-2-Rh-2-Pt-2-Rh-2-Pt-2-Pt-2}(n-). All metal oxidation states in 4, determined by structural and X-ray photoelectron spectral analyses, are +2. The unbridged Rh-Pt and Pt-Pt bonds in 4 are supported by multiple hydrogen bonds; the distances of Rh-Pt bonds are relatively longer than those in previously reported 1-D chains despite smaller torsion angles between the Rh and Pt coordination planes. Diffuse reflectance spectra revealed that the electronic structure of 4 has a larger gap between filled and vacant sigma-type orbitals and a smaller gap between a filled pi*(Rh-2) and a vacant sigma-type orbital.

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