Crystal structure of (μ-N-allylthiourea-κ2S:S)bis[μ-bis(diphenylphosphanyl)methane-κ2P:P′]bis[bromidocopper(I)] acetonitrile disolvate

Abstract

The reaction of cuprous bromide with a mixture of 1,1-bis(diphenylphosphanyl)methane (dppm: C25H22P2) and N-allylthiourea (ATU: C4H8N2S) in acetonitrile yielded the title solvated dinuclear complex, [Cu2Br2(C4H8N2S)(C25H22P2)2]·2C2H3N or [Cu2Br2(ATU)(dppm)2]·2CH3CN. Both Cu+ ions adopt distorted tetrahedral geometries, being coordinated by one terminal Br atom, one μ2-S atom of the bridging ATU ligand and two P atoms of the bridging dppm ligands. Within the complex, intramolecular C—H...S, C—H...π, N—H...Br and π–π stacking interactions are observed. In the crystal, the components are linked by N—H...Br and C—H...N hydrogen bonds and weak π–π stacking interactions, generating chains propagating in the [100] direction.

Keywords

• crystal structure
• copper(I) complex
• diphenylphosphinomethane
• N′-allylthiourea
• hydrogen bonding
• C—H...π interactions
• π–π stacking interactions