Solid state structures of pentacoordinated lambda(3)-iodanes with a trigonal bipyramidal geometry: synthesis of diphenyl- and alkynyl(phenyl)-lambda(3)-iodane complexes with 1,10-phenanthroline

The single crystal X-ray structure of the supramolecular complex formed between diphenyl-lambda(3)-iodane (Ph2IBF4) or 1-alkynyl(phenyl)-lambda(3)-iodane [(BuCCI)-C-t(Ph)BF4] and 1,10-phenanthroline indicates a hitherto unknown distorted trigonal bipyramidal geometry around iodine(III), in which 1,10-phenanthroline acts as a bidentate ligand and occupies equatorial sites.