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Spectroscopic studies on some compounds (including dimorphic solids) of platinum(<scp>II</scp>) with 2,2′-bipyridyl and its analogues
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1974
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Inorganic ChemistryChemical EngineeringDimorphic SolidsEngineeringRed FormSpectroscopic StudiesSpectroscopyNatural SciencesCoordination ComplexSquare PlanarDistorted StructureMolecular ComplexChemistrySpectroscopic PropertyInorganic SynthesisSpectra-structure CorrelationInorganic Compound
The structure and spectroscopic properties of the red form of [Pt(bipy)Cl2](bipy = 2,2′-bipyridyl) are discussed. Some novel cases of dimorphism are reported. Preparation of the new complexes [Pt(LL)Cl2](LL = 6,6′-Me2-bipy, 5,5′-Me2bipy, 4,4′-Me2bipy), [Pt(LL)2]2+(LL = 5,5′-Me2bipy, 4,4′-Me2bipy), [Pt(bipy)(py)2]2+, [Pt(bipy)-(NO3)(OH)], and [Pt(bipy)(H2O)(OH)]+(py = pyridine) are described and 1H n.m.r. assignments of [Pt(bipy)-(OH)2] and [Pt(bipy)2]2+ have been made by comparison with the corresponding methyl-substituted 2,2′-bipyridyl derivatives. At pH ca. 6, the 220 MHz 1H m.r. spectrum of [Pt(bipy)2]2+ is consistent with a square planar or tetrahedrally distorted structure.