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Di--pivalamidato-4N:O;O:N-bis­[(2,2′-bi­pyridine-2N,N′)(sulfato-O)­platinum(III)] tetrahydrate in a head-to-tail isomerism

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The title compound, [Pt2III(C5H10NO)2(SO4)2(C10H8N2)2]·4H2O, is the first reported example of a complex in which an amidate-bridged Pt(bpy) dimer is stabilized in the oxidation level of PtIII (bpy is 2,2′-bi­pyridine). The asymmetric unit consists of one half of the formula unit with a twofold axis passing through the center of the dimer. The intradimer PtIII—PtIII bond distance [2.5664 (6) Å] is comparable to those reported for α-pyridonate-bridged cis-diammineplatinum(III) dimers [2.5401 (5)–2.5468 (8) Å; Hollis & Lippard (1983). Inorg. Chem. 22, 2605–2614], in spite of the close contact between the bpy planes within the dimeric unit. The axial Pt—Osulfate distance is 2.144 (7) Å.

Document Type: Research Article


Publication date: 2004-06-01

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