Abstract
Visible absorption and 1H and 13C NMR spectra have been measured for some meso-tetraphenyl- and meso-tetra( p-tolyl)porphyrin complexes of tin(IV) containing axial hydroxo and formato ligands. The unsymmetrical hydroxo/formato complexes allow assessment of cis and trans influences on NMR chemical shifts and J(SnH) and J(SnC) values, confirming the strong donor properties of the OH ligand bound to six-coordinate tin(IV).
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