Solid state and solution studies of a T-shaped gold(I) complex: Au[(C6H5)2PCH2N(C6H5)2]2Cl

The addition of the ligand NPm (diphenylphosphino diphenylamino methane) to the Na[AuCl4] salt reduced by thiodiglycol or directly to Ph3PAuCl leads to the same product of general formula (NPm)2AuCl. The structure of this complex has been determined by X-ray crystallography. The colorless orthorhombic compound crystallizes in the space group Fdd2, Z = 8, a = 24.941(4), b = 32.576(4), c = 10.299(1) Å, withR and Rw values of 2.5 and 2.0%, respectively. The ligand is P-bonded to gold. The ionic or covalent character of the AuCl bond is discussed in regard to the bond length and the conductivity data. 31P NMR solution studies are reported.