Crystal structure of tris[μ2-bis(diphenylphosphanyl)methane-κ2P:P′]di-μ3-iodido-trisilver(I) iodide–N-phenylthiourea (1/1)

Abstract

The title complex, [Ag3I2(C25H22P2)3]I·C7H8N2S, comprises a trinuclear [Ag3I2(C25H22P2)3]+unit, an I−anion and oneN,N′-phenylthiourea molecule (ptu). Two μ3-bridging I−anions are linked by three AgIions, leading to the formation of a dicapped triangular motif with Ag...Ag separations in the range 3.0823 (5)–3.2999 (5) Å. Each AgIatom exhibits a distorted tetrahedral geometry, with coordination to two I atoms and two P atoms from bis(diphenylphosphanyl)methane ligands. In the crystal, the I−anion is linked to the ptu molecule through two N—H...I hydrogen bonds [graph-set motifR21(6)]. These N—H...I hydrogen bonds, in addition to weak C—H...S and C—H...I hydrogen bonds, form zigzag chains along [010]. Two of the phenyl rings of two dppm ligands are disordered over two sets of sites with refined occupancies of 0.557 (16) and 0.443 (16).