Insertion of a Bis(phosphine)platinum Group into the S−S Bond of Mn<sub>2</sub>(CO)<sub>7</sub>(μ-S<sub>2</sub>)
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The reaction of Mn2(CO)7(μ-S2), 1, with Pt(PPh3)2(PhC2Ph) yielded the new complex, Mn2(CO)6Pt(PPh3)2(μ3-S)2, 3, by loss of CO and insertion of a Pt(PPh3)2 group into the S−S bond of 1. Complex 3 was characterized crystallographically and was found to consist of an open Mn2Pt cluster with one Mn−Mn bond, 2.8154(14) Å, one Mn−Pt bond, 2.9109(10) Å, and two triply bridging sulfido ligands. Compound 3 reacts with CO to form adduct Mn2(CO)6(μ-CO)Pt(PPh3)2(μ3-S)2, 4. Compound 4 also contains an open Mn2Pt cluster with two triply bridging sulfido ligands but has only one metal−metal bond, Mn−Mn = 2.638(2) Å. Under nitrogen, compound 4 readily loses CO and reverts back to 3.
创建时间：
2016-08-17
