111495-67-1

Basic information

• Product Name: {(iridium)2rhodium(μ-carbonyl)2(carbonyl)3(μ-chloro)(μ-bis((diphenylphosphino)-methyl)phenylarsine)2}{tetraphenylborate}2
• Synonyms: {(iridium)2rhodium(μ-carbonyl)2(carbonyl)3(μ-chloro)(μ-bis((diphenylphosphino)-methyl)phenylarsine)2}{tetraphenylborate}2
• CAS NO: 111495-67-1
• Molecular Weight: 2402.22
• Mol File: 111495-67-1.mol

Chemical Properties

• CAS DataBase Reference: {(iridium)2rhodium(μ-carbonyl)2(carbonyl)3(μ-chloro)(μ-bis((diphenylphosphino)-methyl)phenylarsine)2}{tetraphenylborate}2(CAS DataBase Reference)
• NIST Chemistry Reference: {(iridium)2rhodium(μ-carbonyl)2(carbonyl)3(μ-chloro)(μ-bis((diphenylphosphino)-methyl)phenylarsine)2}{tetraphenylborate}2(111495-67-1)
• EPA Substance Registry System: {(iridium)2rhodium(μ-carbonyl)2(carbonyl)3(μ-chloro)(μ-bis((diphenylphosphino)-methyl)phenylarsine)2}{tetraphenylborate}2(111495-67-1)

Safety Data

• Hazardous Substances Data: 111495-67-1(Hazardous Substances Data)

Upstream product

• 111765-82-3 {(iridium)2rhodium(μ-carbonyl)2(carbonyl)2(μ-chloro)chloro(μ-bis((diphenylphosphino)-methyl)phenylarsine)2}tetraphenylborate 
• 143-66-8 sodium tetraphenyl borate 

Relevant articles and documents

Concerted motion of carbon monoxide and bridging chloride ligands in the heterotrinuclear complex [Ir2Rh(μ-CO)2(CO)3(μ-Cl){μ-(Ph 2PCH2)2AsPh}2][BPh4] 2

Treatment of [Ir2Rh(μ-CO)2(CO) 2(μ-Cl)Cl(μ-dpma)2][BPh4] (dpma is bis((diphenylphosphino)methyl)phenylarsine) with carbon monoxide in a dichloromethane/methanol mixture containing sodium tetraphenylborate yields red crystals of [Ir2Rh(μ-CO)2(CO)3(μ-Cl)(μ-dpma) 2][BPh4]2. This complex crystallizes from dichloromethane/ethyl ether as a solvate with six dichloromethane molecules in the monoclinic space group C2/c (No. 15) with a = 34.896 (4) A?, b = 16.394 (2) A?, c = 23.029 (3) A?, and β = 116.12 (2)° at 130 K. Least-squares refinement of 365 parameters using 6278 reflections yielded R = 0.058 and Rw = 0.062. The structure of the cation consists of a Ir2Rh(μ-dpma)2 core with trans bridging ligands. One Ir-Rh bond is bridged by a chloride and a carbonyl group in a double A-frame geometry, while the other is bridged by a carbonyl group. One iridium has one terminal carbonyl group while the other has two. The bridging chloride and one terminal carbonyl group are statistically disordered because the cations pack about a crystallographic C2 axis. 31P and 13C NMR spectra of the cation in dichloromethane solution indicate that it undergoes a fluxional process that renders the two IrP2 environments equivalent. A dynamic process is described which involves concerted, oscillatory motion of the bridging chloride and five carbonyl groups about the Ir2Rh core in clockwise or counterclockwise directions.