123273-07-4

Basic information

• Product Name: (CO)4Mo(μ-P(n-Pr)2)(μ-H)Pt(CO)(PCy3)
• CAS NO: 123273-07-4
• Molecular Weight: 829.665
• Mol File: 123273-07-4.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: (CO)4Mo(μ-P(n-Pr)2)(μ-H)Pt(CO)(PCy3)(CAS DataBase Reference)
• NIST Chemistry Reference: (CO)4Mo(μ-P(n-Pr)2)(μ-H)Pt(CO)(PCy3)(123273-07-4)
• EPA Substance Registry System: (CO)4Mo(μ-P(n-Pr)2)(μ-H)Pt(CO)(PCy3)(123273-07-4)

Safety Data

• Hazardous Substances Data: 123273-07-4(Hazardous Substances Data)

Upstream product

• 57158-83-5 bis(ethylene)(tricyclohexylphosphine)platinum 
• 123596-78-1 Mo(CO)5(P-n-Pr₂H) 

Relevant articles and documents

Studies of CO labilization and intramolecular hydride transfer reactions in group VI (Cr, Mo, W) metal-platinum heterobimetallic μ-phosphido hydrido carbonyl complexes

Oxidative addition of the P-H bond of the secondary phosphine complexes M(CO)5(PR2H) (M = Cr, Mo, W; R = Ph, nPr) to Pt(C2H4)(PPh3)2 gives (OC)5M(μ-PR2)PtH(PPh3)2, which rapidly loses CO (a reversible process) to give (OC)4M(μ-PR2)(μ-H)Pt(PPh3)2 via a "platinum-assisted mechanism" involving PPh3 dissociation, formation of a μ-carbonyl intermediate (OC)4M-(μ-PR2)(μ-CO)PtH(PPh3), subsequent rearrangement to (OC)4M(μ-PR2)(μ-H)Pt(CO)(PPh3), and substitutional loss of CO from Pt (by PPh3). The complexes (OC)4M(μ-PPh2)(μ-H)Pt(PR3)2 (PR3 = PEt3, PMe2Ph) can be obtained from the reaction of M(CO)5(PPh2Li) and trans-PtHCl(PR3)2. Reaction of M(CO)5(PPh2H) with Pt(1,5-COD)2 in the presence of ethylene gives (OC)5M(μ-PPh2)PtH(COD), which rapidly rearranges, via β-H transfer, to the complex (OC)4M(μ-PPh2)(μ-CO)Pt(η 3-cyclooctenyl). Addition of M(CO)5(PPh2H) to Pt(C2H4)2(PCy3) gives the complexes (OC)4M(μ-PPh2)(μ-H)Pt(CO)(PCy3) while reaction of cis-(OC)4M(PEt3)(PPh2H) (M = Mo, W) with Pt(C2H4)2(PCy3) gives mer-(OC)3(PEt3)M(μ-PPh 2)(μ-CO)PtH(PCy3). For M = Mo this μ-carbonyl terminal-hydrido complex equilibrates with a small amount of the μ-hydrido terminal-carbonyl isomer fac-(OC)3(PEt3)Mo(μ-PPh 2)(μ-H)Pt(CO)(PCy3). The molecular structure of the complexes (OC)4Cr(μ-PPh2)(μ-H)Pt(PEt3)2 and (OC)4Cr(μ-PPh2)(μ-CO)Pt(η 3-cyclooctenyl) (contains a semibridging carbonyl ligand) have been determined by single-crystal X-ray diffraction methods. The complex (OC)4Cr(μ-PPh2)(μ-H)Pt(PEt3)2 crystallizes in the space group Cc with a = 16.719 (9) A?, b = 11.468 (3) A?, c = 18.275 (6) A?, β = 113.68 (3)°, V = 3209 A?3, and Z = 4. The structure was refined to R = 0.0346 and Rw = 0.0401 for the 3801 reflections with I > 3σ(I). Corresponding data for (OC)4Cr(μ-PPh2)(μ-CO)Pt(η 3-cyclooctenyl) are space group P21/a, a = 25.212 (3) A?, b = 10.172 (2) A?, c = 9.577 (2) A?, β = 90.53 (1)°, V = 2456 A?3, and Z = 4. R = 0.0329, Rw = 0.0382 for 3384 reflections with I > 3σ(I).