title: Implications of the crystal structure of the ammonia solvate [Au(NH3)2]Cl·4NH3.
abstract: Crystals of diammine gold(I) chloride ammonia (1/4), [Au(NH(3))(2)]Cl·4NH(3), have been grown from solutions of AuCl in liquid ammonia. The X-ray diffraction analysis (at 123 K) has shown that the crystals feature an extensive network of hydrogen bonds between the [H(3)N-Au-NH(3)](+) cations (with C(i) symmetry) and the Cl(-) anions, including also the ammonia molecules. There is no evidence for an emerging increase of the coordination number of the gold atom by adopting another ammonia molecule or by approaching a chloride anion. Moreover, the geometry of two distant and angular N-H···Au contacts is not a strong support of hydrogen bonds recently amply discussed in the literature.
authors: Department Chemie, Technische Universität München, 85748 Garching, Germany.
authors: Lavinia M
authors: LM
authors: Scherf
authors: Sebastian A
authors: SA
authors: Baer
authors: Florian
authors: F
authors: Kraus
authors: Salem M
authors: SM
authors: Bawaked
authors: Hubert
authors: H
authors: Schmidbaur
mesh_terms: D000641:Ammonia / Q000737:chemistry*; D002712:Chlorides / Q000737:chemistry*; D018360:Crystallography, X-Ray; D006046:Gold / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D012995:Solubility
chemical_list: D002712:Chlorides; D006046:Gold; D000641:Ammonia