Au-197 Mossbauer spectroscopic study of binuclear cycloaurated complexes containing bridging (2-diphenylarsino-n-methyl)phenyl (n=5 and 6)

Au Mössbauer spectra have been measured on a series of binuclear gold complexes containing a bridging As¿C ligand. The plot of quadrupole splitting (Q.S.) against isomer shift (I.S.) indicates that the gold¿arsenic bond in these complexes is less covalent than the gold¿phosphorus bond in analogous P¿C complexes.