The 5-t-But-Catecholato (DTBcat)-Gold-phosphine-complexes : Synthesis and spectral study

Ag + -assisted dechlorination of Gold(I) and Gold(III) phosphine complexes followed by the reaction with 5-t-butcatecholato (DTBcat)-(H 2 CA) in presence of Et 3 N gives neutral violet complexes ,whereas 1-9, 8a, 14-16 are Gold(I) two coordinate linear complexes and 10-13 are Gold(III) square planar four coordinate complexes.The seventeen new complexes are charecterised by ESI-MS, IR and multinuclear NMR ( 1 H, 13 C, 19 F; 31 P) spectroscopic studies.In addition, bidimensional NMR studies such as 1 H 1 H COSY permit a complete assignment of the complexes in the solution phase.