192699-85-7

Basic information

• Product Name: (η(5)-C5Me5)Re(CO)(NO)(COOSiMe2Ph)
• CAS NO: 192699-85-7
• Molecular Weight: 558.723
• Mol File: 192699-85-7.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: (η(5)-C5Me5)Re(CO)(NO)(COOSiMe2Ph)(CAS DataBase Reference)
• NIST Chemistry Reference: (η(5)-C5Me5)Re(CO)(NO)(COOSiMe2Ph)(192699-85-7)
• EPA Substance Registry System: (η(5)-C5Me5)Re(CO)(NO)(COOSiMe2Ph)(192699-85-7)

Safety Data

• Hazardous Substances Data: 192699-85-7(Hazardous Substances Data)

Upstream product

• 7646-75-5 sodium phenyldimethylsilanolate 
• 768-33-2 phenyldimethylsilyl chloride 

Relevant articles and documents

Preparation and characterization of the rhenium silyl esters (η5-C5Me5)(CO)(NO)ReC(O)OSiR3 (SiR3 = SiMe2Ph, SiEt3)

Three synthetic approaches to the rhenium silyl esters Cp * (CO)(NO)ReC(O)OSiEt3 (3) and Cp * (CO)(NO)ReC(O)OSiMe2Ph (4) were evaluated. (a) Treatment of a CH2Cl2 solution of Cp * (CO)2(NO)Re+BF-4 with a silanolate NaOSiEt3 (5) or NaOSiMe2Ph (6) provided 90% isolated yields of 3 and 4. These stable orange-yellow solids are extremely moisture sensitive: traces of water hydrolyze them to Cp * (CO)(NO)ReCO2H and the parent silanol. IR and NMR spectral data of 3 and 4 are consistent with nonchelating μ(η1-C:η1-O) metalloester structures. Less efficient preparative routes to 3 and 4 include treatment of (b) Cp * (CO)(NO)ReCO2H with the requisite chloroalkylsilane and NiPr2Et, and (c) Cp * (CO)(NO)ReCO-2Na+ (7Na+) with the chloroalkylsilane. The new rhenium CO2 adducts Cp * (CO)(NO)ReCO-2M+ (7Li+, 7Na+) were generated by deprotonation of Cp * (CO)(NO)ReCO2H with excess LiH or NaH THF suspensions at 0°C. Both 7Li+ and 7Na+ were characterized by their solution IR spectra and by the formation of their derivatives with silyl and tin chlorides.