Spectroscopic evidence of metal–metal interaction in tetrakis(dithiophenylacetato)dinickel(II)
Abstract
The crystal polarised spectrum of the title compound has been recorded. The spectrum contains more bands than those predicted for a mononuclear diamagnetic square planar NiII complex, a series of five bands with different polarisation characteristics being observed between 13 and 18 kK(1 kK= 1000 cm–1). It is suggested that the spectra are indicative of substantial overlap of the d orbitals between the two nickel(II) atoms in the molecule, and an assignment of the spectrum in D4 symmetry (for the dimeric [Ni2S8] chromophore) put forward.