{4-[(7-Chloro-4-quinolyl)amino]-N,N-diethylpentanaminium}(triphenylphosphine)gold(I) dinitrate

The title compound, [Au(C18H27ClN3)(C18H15P)](NO3)2, is a coordination complex of gold(I) triphenylphosphine with the N atom in the quinoline ring of the common antimalarial compound chloroquine (CQ). The pendant diethylamino group of the CQ ligand was found to be protonated. The complex exhibits a nearly linear coordination geometry around the AuI atom [N—Au—P = 176.94 (6)°], with Au—N and Au—P bond lengths of 2.070 (2) and 2.2338 (7) Å, respectively. The diethylammonium group and one of the two nitrate counter-ions are disordered with occupancy ratios of 0.519 (4):0.481 (4). The nitrate anions are hydrogen bound to both the amino and ammonium groups of the N,N-diethylpentanaminium fragment of the CQ.

Abstract licence: CC BY

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