Crystal structure of tris-[μ2-bis-(di-phenyl-phosphan-yl)methane-κ(2) P:P']di-μ3-bromido-tris-ilver(I) bromide-N,N'-phenyl-thio-urea (1/1).

Abstract

The title complex, [Ag3Br2(C25H22P2)3]Br·C7H8N2S, comprises a trinuclear [Ag3Br2(C25H22P2)3]+ unit, a Br− anion and one N,N′-di­methyl­thio­urea mol­ecule (ptu). Three AgI ions are linked via two μ3-bridging Br atoms, leading to a distorted triangular bipyramid with an Ag⋯Ag separation range of 3.1046 (6)–3.3556 (6) Å. The triangular Ag3 arrangement is stabilized by six P atoms from three chelating bis­(di­phenyl­phosphan­yl)methane (dppm) ligands. The AgI ion presents a distorted tetra­hedral coordination geometry. In the crystal, the bromide anion is connected to the ptu mol­ecule through N—H⋯Br hydrogen bonds [graph-set motif R 2 1(6)]. Each bromide/ptu aggregate links the complex ion via C—H⋯S and C—H⋯Br hydrogen bonds, leading to the formation of a three-dimensional network. Two phenyl rings from two dppm ligands were modelled as disordered over two sites.