Characterisation of three isomers of trans-[IrCl2(EMe2Ph)4]ClO4(E = P or As) each containing adjacent parallel phenyl rings
Abstract
The major of three isomers of trans-[IrCI2(EMe2Ph)4]CIO4(E = P or As), identified by their low temperature 31P{1H}, 13C{1H}, and 1H n.m.r. spectra, corresponds to that found in the crystal (E = P) and each contains adjacent and parallel phenyl rings leading to 1H n.m.r. (phenyl) resonances as high-field as δ 5.7.