Gold(i) complexes with heteroaryl phosphine ligandsElectronic supplementary information (ESI) available. CCDC 960836-960840. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c3dt52893f

Gold( i ) complexes ligated by phosphines with N -heterocycles in the periphery were prepared. First the synthesis of the ligands N -(diphenylphosphino)-4-(pyridin-2-yl)pyrimidin-2-amine (Hpypya) and N -(diphenylphosphino)-4-phenylpyrimidin-2-amine (Hphpya) are reported. These two compounds together with the related but earlier published ligands 3-(2-(diphenylphosphino)phenyl)-1 H -pyrazole (Hph3py) and 5-(4-(diphenylphosphino)phenyl)-1 H -pyrazole (Hph5py) were reacted with [(tht)AuCl] and [Au(tht) 2 ]ClO 4 to give the heteroleptic complexes [(L)AuCl] and the homoleptic compounds [(L) 2 Au]ClO 4 (L = Hpypya, Hphpya, Hph3py, and Hph5py). Single crystal X-ray diffraction studies revealed that the heteroleptic complexes form hydrogen bonds between two N -heterocycles of neighboring complexes resulting in dimeric structures. The homoleptic complexes show a different behavior. Homoleptic and heteroleptic gold( i ) complexes ligated by phosphines with N -heterocycles in the periphery were prepared.