20545-30-6

Basic information

• Product Name: bis(triphenylphosphoranylidene)ammonium bromide
• Synonyms: bis(triphenylphosphoranylidene)ammonium bromide
• CAS NO: 20545-30-6
• Molecular Weight: 618.492
• Mol File: 20545-30-6.mol
• Article Data: 6

Chemical Properties

• CAS DataBase Reference: bis(triphenylphosphoranylidene)ammonium bromide(CAS DataBase Reference)
• NIST Chemistry Reference: bis(triphenylphosphoranylidene)ammonium bromide(20545-30-6)
• EPA Substance Registry System: bis(triphenylphosphoranylidene)ammonium bromide(20545-30-6)

Safety Data

• Hazardous Substances Data: 20545-30-6(Hazardous Substances Data)

Upstream product

• 38420-68-7 bis(triphenylphosphine)iminium thiocyanate 
• 3958-57-4 1-bromomethyl-3-nitrobenzene 
• 21050-13-5 bis(triphenylphosphine)iminium chloride 
• 542-69-8 1-iodo-butane 
• 119435-53-9 {PPN}{EtSFe(CO)4} 
• 109-65-9 1-bromo-butane 
• 52542-59-3 {bis(triphenylphosphine)nitrogen}{manganese(carbonyl)5} 
• 3958-60-9 2-nitrophenylmethyl bromide 
• 603-35-0 triphenylphosphine 
• 13916-35-3 lithium triphenylphosphonium azayldiide 

Downstream Products

• 3958-60-9 2-nitrophenylmethyl bromide 
• 119909-85-2 ((C₆H₅)3P)2N⁽¹⁺⁾*{Os₃Br(CO)11}^(1-)=((C₆H₅)3P)2N{Os₃Br(CO)11} 
• 165259-19-8 [PPN][trans-MoBr₄(THF)2] 
• 21050-13-5 bis(triphenylphosphine)iminium chloride 
• 1647-23-0 3,3-dimethylbutyl bromide 
• 51446-58-3 mer,trans-BrRe(CO)3(PPh₃)2 
• 110509-54-1 {PPN}{Ru3(μ3-NPh)(Br)(CO)9} 

Relevant articles and documents

An economical small-scale synthesis of the μ-nitridobis(triphenylphosphonium) cation, +

Substitution of bromine for chlorine in the literature procedure for the preparation of the μ-nitridobis(triphenylphosphonium> cation allows the scale to be considerably reduced without serious loss of yield, and effects a significant reduction in the ove

PHOSPHONIUM AZA-YLDIID AS REAGENT FOR ONE-POT SYNTHESIS OF PHOSPHINIMINES WITH FUNCTIONAL N-SUBSTITUENTS.

A new procedure for the one-pot synthesis of phosphinimines with functional N-substituents using the alkylation of phosphonium aza-yldiid 1 with α-bromo esters or the direct introduction of phosphorus and sulfur groups.

Substitution Reactions toward 2-Nitrobenzyl Pseudohalides. The Crystal Structure of 2-Nitrobenzyl Tellurocyanate

The reactions between 2-nitrobenzyl pseudohalides, 2-NO2-PhCH2XCN, and pseudohalide ions, NCX- (X = S, Se or Te) have been studied kinetically in acetonitrile at 25.0 deg C.The reactions proceed through nucleophilic attack at the methylene carbon atom, forming exclusively the exchange products.The average nucleophilicity order, NCTe- >> NCSe- > NCS-, and the average leaving group order, NCTe- >/= NCSe- >/= NCS-, lead to a carbon basicity order NCTe- > NCSe- >/= NCS-, which is confirmed with equilibrium studies.A crystal structure determination of 2-nitrobenzyl tellurocyanate at ca. 135 deg C has revealed that the TeCN group is syn-clinal (gauche) to the C(CH2)-C(Ar) bond with a torsion angle of -48.5(5) deg.The TeCC plane forms an angle of 103.4(5) deg with the phenyl ring plane.In this conformation the steric influence of the 2-NO2 group in substitution reactions at the methylene carbon atom will be negligible except for bulky nucleophiles.The tellurium atom forms two fairly strong intermolecular bonds to nitrogen atoms from neighbouring tellurocyanate groups, viz. 2.889(6) Angstroem trans to the cyano group and 3.382(6) Angstroem trans to the methylene group.In the crystalline state the compound may be considered both as a tellurium(II) complex and as an organic pseudohalide.No intermolecular tellurium-oxygen contacts could be observed.