118050-80-9

Basic information

• Product Name: mer-tricarbonyl(bis(diphenylphosphino)ethane)(η2-methyldithioacetate)tungsten
• CAS NO: 118050-80-9
• Molecular Weight: 772.518
• Mol File: 118050-80-9.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: mer-tricarbonyl(bis(diphenylphosphino)ethane)(η2-methyldithioacetate)tungsten(CAS DataBase Reference)
• NIST Chemistry Reference: mer-tricarbonyl(bis(diphenylphosphino)ethane)(η2-methyldithioacetate)tungsten(118050-80-9)
• EPA Substance Registry System: mer-tricarbonyl(bis(diphenylphosphino)ethane)(η2-methyldithioacetate)tungsten(118050-80-9)

Safety Data

• Hazardous Substances Data: 118050-80-9(Hazardous Substances Data)

Upstream product

• 118050-80-9 fac-tricarbonyl(bis(diphenylphosphino)ethane)(η1-methyldithioacetate)tungsten 
• 29890-05-9 tetracarbonyl-1,2-bis(diphenylphosphino)ethane-tungsten(0) 
• 2168-84-5 methyl dithioacetate 

Downstream Products

• 118050-80-9 mer-tricarbonyl(bis(diphenylphosphino)ethane)(η2-methyldithioacetate)tungsten 

Relevant articles and documents

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Esters of dithiocarboxylic acids SC(R)SMe (R Me, Ph) coordinate to mononuclear transition metal fragments in three different ways. η1(S)-coordination of the CS group is found in cases of low electron density at the metal, e.g. M(CO)5 (η1-SC(Me)SMe) (M Cr, W) and cis-W(CO)4(PR3)(η1-SC(Me)SMe) (PR3 P-i-Pr3, PPhMe2). The more electron-rich tricabonyl complexes occur in two isomeric forms, fac-W(CO)3(R2PC2H4-PR2)(η1-SC(R)SMe) and mer-W(CO)3(R2PC2H4-PR2) (η2-SC(R)(SMe) (R Me, Ph) with the η2-dithioester acting as a good π-acceptor ligand. In the compounds fac-M(CO)3(PR)3(η3-SC(Me)SMe) (M Cr, Mo, W) and cis-Mo(CO)2(dppe)(η3-SC(Me)SMe) the dithioester functions as a four-electron ligand with the SMe group also being coordinated to the metal. The three different bonding modes are readily distinguished by 13C NMR spectroscopy A X-ray structure analysis of fac-W(CO)3(P-i-Pr3)(η3-SC(Me)SMe) reveals the allylic-type coordination of the dithioester ligand.