(Sulfasalazinato-κO)bis-(triphenyl-phosphine-κP)copper(I).

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.

Bis[4-amino-N-(pyrimidin-2-yl)benzene-sulfonamidato](2,2'-bipyridine)manganese(II).

The title compound, [Mn(C(10)H(9)N(4)O(2)S)(2)(C(10)H(8)N(2))], contains a distorted octa-hedral [Mn(sdz)(2)(bpy)] (sdz is the sulfadiazine anion and bpy is 2,2'-bipyridine) complex mol-ecule. A three-dimensional network is generated by N-H⋯N, N-H⋯O and C-H⋯O hydrogen bonds from the sulfadiazine ligands.