title: (Sulfasalazinato-κO)bis-(triphenyl-phosphine-κP)copper(I).
abstract: The title mixed-ligand copper(I) complex, [Cu(C(18)H(13)N(4)O(5)S)(C(18)H(15)P)(2)], was synthesized via solvothermal reaction of [Cu(PPh(3))(2)(MeCN)(2)]ClO(4) and sulfasalazine [systematic name: 2-hydr-oxy-5-(2-{4-[(2-pyridylamino)sulfon-yl]phen-yl}diazen-yl)benzoic acid]. The mononuclear complex displays a trigonal coordination geometry for the Cu(I) atom, which is surrounded by two P-atom donors from two different PPh(3) ligands and one O-atom donor from the monodentate carboxyl-ate group of the sulfasalazinate ligand. The latter ligand is found in a zwitterionic form, with a deprotonated amine N atom and a protonated pyridine N atom. Such a feature was previously described for free sulfasalazine. The crystal structure is stabilized by C-H⋯O, C-H⋯N, N-H⋯N and O-H⋯O hydrogen bonds.
authors.affiliation: Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry & Chemical Engineering, Guangxi Normal University, Guilin 541004, People's Republic of China.
authors.forename: Ke-Bin
authors.initials: KB
authors.lastname: Huang
authors.forename: Yan-Shu
authors.initials: YS
authors.lastname: Tan
authors.forename: Xiao-Yan
authors.initials: XY
authors.lastname: Song
authors.forename: Yan-Cheng
authors.initials: YC
authors.lastname: Liu
authors.forename: Zhen-Feng
authors.initials: ZF
authors.lastname: Chen