title: The facile assembly of bis-, tris- and poly(triazaphosphole) systems using "click" chemistry.
abstract: Uncatalysed 1,3-dipolar cycloaddition reactions between two phosphaalkynes, P≡CR (R = Bu(t) or Me), and a series of di-, tri- and poly-azido precursor compounds have given very high yields of a range of triazaphosphole substituted systems. These comprise the 1,1'-bis(triazaphosphole)ferrocenes, [Fe{C5H4(N3PCR)}2], the tris(triazaphosphole)cyclohexane, cis-1,3,5-C6H9(N3PCBu(t))3, and the poly(allyltriazaphosphole)s, {C3H5(N3PCR)}∞. Electrochemical studies on the 1,1'-bis(triazaphosphole)ferrocenes reveal the compounds to undergo reversible 1-electron oxidation processes, at significantly more positive potentials than ferrocene itself. Attempts to chemically oxidise one 1,1'-bis(triazaphosphole)ferrocene with a silver salt, Ag[Al{OC(CF3)3}4] were not successful, and led to the formation of a silver coordination complex, [{Fe[μ-C5H4(N3PCBu(t))]2(μ-Ag)}2][Al{OC(CF3)3}4]2, thereby demonstrating the potential the reported triazaphosphole substituted systems possess as novel ligands in coordination chemistry.
authors.affiliation: School of Chemistry, PO Box 23. and Monash University, VIC, 3800, Australia.
authors.forename: Sam L
authors.initials: SL
authors.lastname: Choong
authors.forename: Ayman
authors.initials: A
authors.lastname: Nafady
authors.forename: Andreas
authors.initials: A
authors.lastname: Stasch
authors.forename: Alan M
authors.initials: AM
authors.lastname: Bond
authors.forename: Cameron
authors.initials: C
authors.lastname: Jones
mesh_terms: D001372:Aza Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D057930:Click Chemistry / Q000191:economics / Q000379:methods*; D056831:Coordination Complexes / Q000138:chemical synthesis / Q000737:chemistry; D018360:Crystallography, X-Ray; D061565:Cycloaddition Reaction / Q000191:economics / Q000379:methods; D003510:Cyclohexanes / Q000138:chemical synthesis / Q000737:chemistry*; D055664:Electrochemical Techniques; D005296:Ferrous Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D000075163:Metallocenes; D008958:Models, Molecular; D010084:Oxidation-Reduction; D012834:Silver / Q000737:chemistry
chemical_list: D001372:Aza Compounds; D056831:Coordination Complexes; D003510:Cyclohexanes; D005296:Ferrous Compounds; D000075163:Metallocenes; D012834:Silver; C506365:Cyclohexane; C004998:ferrocene