180893-19-0

Basic information

• Product Name: cis,trans-[WCl₂(NNC₅H₂Me₃-2,4,6)(CO)(PMe₂Ph)2][BF₄]
• Synonyms: cis,trans-[WCl₂(NNC₅H₂Me₃-2,4,6)(CO)(PMe₂Ph)2][BF₄]
• CAS NO: 180893-19-0
• Molecular Weight: 781.058
• Mol File: 180893-19-0.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: cis,trans-[WCl₂(NNC₅H₂Me₃-2,4,6)(CO)(PMe₂Ph)2][BF₄](CAS DataBase Reference)
• NIST Chemistry Reference: cis,trans-[WCl₂(NNC₅H₂Me₃-2,4,6)(CO)(PMe₂Ph)2][BF₄](180893-19-0)
• EPA Substance Registry System: cis,trans-[WCl₂(NNC₅H₂Me₃-2,4,6)(CO)(PMe₂Ph)2][BF₄](180893-19-0)

Safety Data

• Hazardous Substances Data: 180893-19-0(Hazardous Substances Data)

Upstream product

• 773-01-3 2,4,6-trimethylpyrylium tetrafluoroborate 
• 13755-29-8 sodium tetrafluoroborate 

Downstream Products

• 7664-41-7 ammonia 

Relevant articles and documents

Synthesis and structures of tungsten (1-pyridinio)imido complexes and their facile N-N bond cleavage

The tungsten (1-pyridinio)imido complexes [WX2(NNC5H4OMe)(L)(PMe2Ph) 2]+, [WX2(NNC5H2Me3)(L)(PMe 2-Ph)2]+, and [WCl2{NNC5H2(COOEt)2Ph}(L)(PMe 2Ph)2]+ (X = Cl, Br; L = CO, C2H4, PMe2Ph) were synthesized by the reaction of the salts of pyrylium cations with the hydrazido complexes [WX2(NNH2)(L)(PMe2Ph)2], which were derived from the dinitrogen complex cis-[W(N2)2(PMe2Ph)4]. The complexes obtained were characterized by spectroscopic measurements as well as crystallographic studies of cis,mer-[WBr2(NNC5H4OMe-4)(PMe 2Ph)3]-[PF6], cis,trans-[WCl2(NNC5H4OMe-4)(CO)(PMe 2Ph)2][ClO4], cis,trans-[WCl2(NNC5H2Me 3-2,4,6)(CO)(PMe2-Ph)2][OTf] (OTf = OSO2CF3), and cis,trans-[WCl2(NNC5H4OMe-4)(C 2H4)(PMe2Ph)2][ClO4], which revealed that the N-N bond distances of these (1-pyridinio)imido complexes are shorter than those of the trialkyl- or unsubstituted hydrazidium complexes so far reported. The (1-pyridinio)imido complexes with a π-acidic ligand (CO or C2H4) underwent smooth N-N bond cleavage on reaction with cobaltocene under ambient conditions to liberate the pyridines in moderate to high yields. In some reactions that were conducted in the presence of HNEt3-Cl, the corresponding imido (NH) complexes were recovered as the metal products. The (1-pyridinio)imido complexes also reacted with KOH in MeOH to give the pyridines and ammonia in high yields. These reactions provide the first examples of N-N bond cleavage of well-defined hydrazidium complexes and accomplish the synthesis of pyridines from molecular nitrogen under mild conditions.