A dinuclear ruthenium complex with a semi-bridging hydride ligand: X-ray crystal structure of [{RuH(pz)(cod)}2pzH](cod = cyclo-octa-1,5-diene, pzH = pyrazole)

Abstract

The X-ray structure of [{RuH(pz)(cod)}₂pzH](cod = cyclo-octa-1,5-diene, pzH = pyrazole) reveals a semi-bridging hydride ligand [Ru(1)–H(1) 1.68(5)Å, Ru(2)–H(1) 2.05(6)Å, Ru(1)⋯ Ru(2) 3.166(1)Å] in an unsymmetrical dimer with the ruthenium atoms linked by two pyrazolyl ligands; ¹H and ¹³C n.m.r. spectra show that this structure persists in solution.