Gold(i) complexes of tetra-tert-butylcyclotetraphosphane

Abstract

The reaction of tetra-tert-butylcyclotetraphosphane cyclo-(P^tBu)₄ (L) with one to four equivalents of [AuCl(tht)] (tht = tetrahydrothiophene) leads to the formation of gold(I) complexes [(AuCl)_nL] (n = 1–4, 1–4) in which the ligand coordinates up to four gold(I) chloride fragments. Complexes 1–4 show dynamic behaviour with redistribution of {AuCl} moieties which was investigated by ³¹P{¹H} NMR spectroscopy, DFT calculations and single crystal as well as powder X-ray diffraction.