121140-53-2

Basic information

• Product Name: {N(CH₃)4}{(CO)5MoC(O)(C₆H₄-p-CH₃)}
• CAS NO: 121140-53-2
• Molecular Weight: 429.281
• Mol File: 121140-53-2.mol

Chemical Properties

• CAS DataBase Reference: {N(CH₃)4}{(CO)5MoC(O)(C₆H₄-p-CH₃)}(CAS DataBase Reference)
• NIST Chemistry Reference: {N(CH₃)4}{(CO)5MoC(O)(C₆H₄-p-CH₃)}(121140-53-2)
• EPA Substance Registry System: {N(CH₃)4}{(CO)5MoC(O)(C₆H₄-p-CH₃)}(121140-53-2)

Safety Data

• Hazardous Substances Data: 121140-53-2(Hazardous Substances Data)

Upstream product

• 624-31-7 4-tolyl iodide 
• 64-20-0 tetramethylammonium bromide 
• 13939-06-5 molybdenum hexacarbonyl 

Relevant articles and documents

Highly selective molybdenum ONO pincer complex initiates the living ring-opening metathesis polymerization of strained alkynes with exceptionally low polydispersity indices

The pseudo-octahedral molybdenum benzylidyne complex [TolC≡Mo(ONO)(OR)]·KOR (R = CCH3(CF3)2) 1, featuring a stabilizing ONO pincer ligand, initiates the controlled living polymerization of strained dibenzocyclooctynes at T > 60 °C to give high molecular weight polymers with exceptionally low polydispersities (PDI ～ 1.02). Kinetic analyses reveal that the growing polymer chain attached to the propagating catalyst efficiently limits the rate of propagation with respect to the rate of initiation (kp/ki ～ 10-3). The reversible coordination of KOCCH3(CF3)2 to the propagating catalyst prevents undesired chain-termination and -transfer processes. The ring-opening alkyne metathesis polymerization with 1 has all the characteristics of a living polymerization and enables, for the first time, the controlled synthesis of amphiphilic block copolymers via ROAMP.