87883-13-4

Basic information

• Product Name: hexachloro(μ-oxo)bis(.mu-bis(diphenylphosphino)-methane)diosmium(IV)-bis(chloroform)
• CAS NO: 87883-13-4
• Molecular Weight: 1616.67
• Mol File: 87883-13-4.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: hexachloro(μ-oxo)bis(.mu-bis(diphenylphosphino)-methane)diosmium(IV)-bis(chloroform)(CAS DataBase Reference)
• NIST Chemistry Reference: hexachloro(μ-oxo)bis(.mu-bis(diphenylphosphino)-methane)diosmium(IV)-bis(chloroform)(87883-13-4)
• EPA Substance Registry System: hexachloro(μ-oxo)bis(.mu-bis(diphenylphosphino)-methane)diosmium(IV)-bis(chloroform)(87883-13-4)

Safety Data

• Hazardous Substances Data: 87883-13-4(Hazardous Substances Data)

Upstream product

• 13444-93-4 osmium(III) chloride 
• 2071-20-7 bis-diphenylphosphinomethane 

Relevant articles and documents

A linear μ-oxo-diosmium(IV) molecule in which two bis(diphenylphosphino)methane ligands bridge an entire M-O-M unit: Os2(M-O)(μ-Ph2PCH2PPh2) 2Cl6

The title compound, Os2(μ-O)(μ-dppm)2Cl6·2CHCl 3 (dppm = (PPh2)2CH2), was prepared by reacting OsCl3 with dppm. The crystal and molecular structure of this compound has been determined from three-dimensional X-ray study. The compound crystallizes in the monoclinic space group P21/c with unit cell dimensions a = 11.138 (3) A?, b = 24.461 (5) A?, c = 12.769 (3) A?, β = 105.82 (3)°, and V = 3347 (3) A?3 with Z = 4. The structure was refined to R = 0.044 (Rw = 0.052). The complex molecule, which lies on a crystallographic inversion center, has a linear Os-O-Os central unit with an Os-O bond distance 1.792 (1) A?. The complex is diamagnetic. The equivalence of all phosphorus atoms is evidenced from both the 31P NMR spectrum (chemical shift 30.9 ppm) and the X-ray structure. The dihedral angles O-Os-P-C of two phosphine bridges are 22.2 and 27.2°. A dichloromethane solution of the complex displays one one-electron oxidative response at +1.62 V (ΔEp = 200 mV) and two one-electron reductive processes at +0.09 V (ΔEp = 180 mV) and -1.13 V. The coulometrically reduced (at -0.15 V) solution of the dimer exhibits a rhombic EPR spectrum with g1 = 2.022 and g2 = 1.578. The electronic spectrum of the dichloromethane solution shows absorption bands at 355 (∈ = 26000), 425 (18 500), 490 (9600), and 705 nm (760). The spectroelectrochemical behavior of this complex can be interpreted by using a qualitative molecular orbital scheme, framed on the assumption that a strong Os-Os interaction exists through the linear oxide bridge.