P-31 chemical shift anisotropies of dihalobis(trialkylphosphine)nickel(II) complexes

摘要

The P-31 CP-MAS NMR spectra of trans-square-planar complexes of dihalonickel(II) complexes with tribenzyl-, tricyclohexyl- and tricyclohexylmethylphosphines have been examined and the chemical shift tensors determined. The spans, delta(11)-delta(33), of the tensor components decrease with change in the halide, Cl > Br > I, for all the tertiary phosphines due principally to the deshielding of the delta(33) component. (C) 2004 Elsevier B.V. All rights reserved.