Reaction of the thiosemicarbazone ligands 2-pyridineformamide thiosemicarbazone (HAm4DH) or 2-pyridineformamide 3-hexamethyleneiminylthiosemicarbazone (HAm4hexim) with the gold(I) compound [AuCl(tdg)] (tdg = thiodiglycol = 2,2′-thiodiethanol) gives the complexes [Au(H 2 Am4DH) 2 ]Cl 3 •H 2 O (1) and [Au(HAm4hexim) 2 ]Cl (2). The room temperature oxidation of solutions of 2 in water/methanol leads to the crystallization of a gold(III) complex of formula [Au(Am4hexim)Cl]Cl•2H 2 O (3). Single-crystal X-ray diffraction analysis revealed that in compounds 1 and 2 gold(I) is linearly coordinated to sulfur atoms from two monodentate thiosemicarbazone molecules. Packing architectures and hydrogen bonding networks obtained using graph set notations are discussed for all complexes. Weak agostic interactions exist in both 1, and gold−gold contacts are present in the solid state in 1 (Au•••Au = 3.83 Å) but not in 2 (Au•••Au = 5.46 Å). The fluorescence of the ligands and complexes of gold(I) was studied. In addition, elemental analysis data and spectroscopic properties in the solid state and in solution are also described for complexes 1 and 2.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.