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Stereochemical non-rigidity of a metal polyhedron; fourier transform platinum-195 nuclear magnetic resonance spectra of [Pt<sub>n</sub>(Co)<sub>2n</sub>]<sup>2–</sup>(n= 3, 6, or 9)
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1977
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Crystal StructureEngineeringMagnetic ResonanceChemistrySpectroscopic PropertySpectra-structure CorrelationN= 3Materials ScienceInorganic ChemistryPhysicsPhysical ChemistryStereochemical Non-rigidityMetal PolyhedronCrystallographyPt N.m.rOuter Pt3-trianglesNatural SciencesSpectroscopyResonancePt3-triangles OccursSpectroscopic Method
195 Pt n.m.r. data are reported for [Ptn(CO)2n]2–(n= 3, 6, or 9) and, when n= 9, the spectra are consistent with rotation of the outer Pt3-triangles with respect to the middle triangle about the principal 3-fold axis; inter-exchange of Pt3-triangles occurs in mixtures of [Pt9(CO)18]2– and [Pt12(CO)24]2– at 25°C.