Hybrid inorganic–organic layered structures of [AuCl4]− and protonated bipyridyl derivatives

Tetra-chloro-(bis-(3,5-dimethylpyrazolyl)methane)gold(III) chloride: An HIV-1 reverse transcriptase and protease inhibitor

“…This is similar to observations made for gold compounds of general formula [H 2 -dpa][AuCl 4 ]Cl and [H 2 -dpe][AuCl 4 ]Cl[22].…”

“…The microanalysis together with the solid state structure proved the composition and the purity of 1. Previously, Bourne et al [22] reported similar compounds bearing dipyridylamine (dpa) ligands, in which the dpa ligands are protonated to form [H 2 -dpa] 2+ cations with [AuCl 4 ] À as the counterions.…”

Supramolecular Aggregation of Perfluoroorganyl Iodane Reagents in the Solid State and in Solution

“…Thereby, a square‐planar coordination of the iodine atom is highly favored and can be compared with the coordination geometries of structurally related metal compounds such as gold(III) complexes. In the latter, the Au atom displays square‐planar coordination with four ligands, but the fifth and sixth coordination site are additionally readily occupied in the crystalline state through secondary bonding interactions with free donor moieties (Scheme a) . For this reason, we wondered if similar additional bonding interactions are relevant for trivalent iodine to result in formal penta‐ or hexacoordination.…”

“…In the latter, the Au atom displays square-planar coordination with four ligands, but the fifth and sixth coordination site are additionally readily occupied in the crystalline state through secondary bonding interactions with free donor moieties (Scheme 2a). [18][19][20] For this reason, we wondered if similar additional bonding interactions are relevant for trivalent iodine to result in formal penta-or hexacoordination. Thus, it would be meaningful to distinguish between "secondary" (i.e., the occupancy of the fourth coordination site leading to square-planar coordination) and "tertiary" bonding interactions (i.e., the occupancy of further coordination sites through even weaker iodine-donor contacts, Scheme 2b).…”

A Polymorphic Gold(III) Complex Comprising a Multifunctional Triazolylpropanamide Ligand

“…The increase of the coordination number of Au III atoms to six by secondary Au···Cl or Au···S bonds has been frequently described in previous contributions. [11,[13][14][15][16][17][18][19][22][23][24] In the case of Au···Cl linkages, comparable interatomic separations as in 2a have been reported. [22][23][24] In contrast, direct aurophilic Au···Au interactions appear to be negligible in 2a.…”