Abstract
While X-ray crystallography provides reliable solid-state information, the assignment of hapticity in [HB(3,5-dimethylpyrazolyl)3]MLn (M = Rh, Ir, Pt) complexes in solution is complicated by the dynamic nature of the tris(pyrazolyl)borate ligand. 1H and 13C NMR spectroscopy is ambiguous as to the nature of the coordination environment around the metal center. 11B NMR data are shown to correlate with the hapticity of the tris(pyrazolyl)borate ligand, making it a useful tool for the rapid determination of solution-state structure of tris(pyrazolyl)borate metal complexes.
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