108589-23-7

Basic information

• Product Name: tetracarbonylbis(1-phenyl-3,4-dimethylphosphole)tungsten⁽⁰⁾
• CAS NO: 108589-23-7
• Molecular Weight: 672.31
• Mol File: 108589-23-7.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: tetracarbonylbis(1-phenyl-3,4-dimethylphosphole)tungsten⁽⁰⁾(CAS DataBase Reference)
• NIST Chemistry Reference: tetracarbonylbis(1-phenyl-3,4-dimethylphosphole)tungsten⁽⁰⁾(108589-23-7)
• EPA Substance Registry System: tetracarbonylbis(1-phenyl-3,4-dimethylphosphole)tungsten⁽⁰⁾(108589-23-7)

Safety Data

• Hazardous Substances Data: 108589-23-7(Hazardous Substances Data)

Upstream product

• 12129-70-3 carbonyhltungsten⁽⁰⁾(cycloocta-1,5-diene) 
• 30540-36-4 3,4-dimethyl-1-phenylphosphole 

Relevant articles and documents

SYNTHESIS AND STEREOCHEMISTRY OF PENTACARBONYL(PHOSPHOLE)METAL(0)- AND TETRACARBONYLBIS(PHOSPHOLE)METAL(0) COMPLEXES OF 6B ELEMENTS

Pentacarbonylphospholemetal(0) and cis-tetracarbonylbis(phosphole)metal(0) complexes were synthesized from the thermal reaction of M(CO)5(THF) and M(CO)4(COD) (M: Cr, Mo, W) with corresponding phosphole (1-phenyl-3,4-dimethylphosphole, 1-phenyl-3-methylphosphole, and 1-phenylphosphole).These complexes were isolated as orange crystals by column chromatography on silicagel at 253 K and crystallization from n-hexane at 223 K and characterized by means of IR and NMR (1H, 13C, and 31P).Spectroscopic data shows that the phosphole is coordinated to the transition metal through its phosphorus atom rather than through the conjugated diene unit in the both types of complexes.The tetracarbonylbis(phosphole)metal(0) complexes were found to have cis-arrangement of two phosphole ligands.Comparing 13C-NMR chemical shifts of the complexes with the free ligands, one can deduce that the involvement of the phosphorus atom in the ring ?-electron delocalization is drastically reduced upon coordination.This is attributed to the stronger ?-donation but weaker ?-accepting ability of the phosphorus atom in the phosphole ligands compared to the carbonyl groups. Key words: Phosphole; chromium; molybdenum; tungsten; carbonyl