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Journal articles
Aza and cyanobridged tripodal dinuclear copper(II) complexes: Electrochemical studies and structural evidence for an original azacyanocarbanion
Abstract : The reactivity of the mononuclear [Cu(TMPA)(L)] n+ complex (TMPA: tris(2-methylpyridine) amine, L: CH3CN, H2O) towards two different bridging species (tetracyanoethylene, 4,40-bipyridine) was investigated. The dinuclear complex [(mu-4,40-bipy)Cu-II(TMPA)(2)](CF3SO3)(4) (1) was synthesised and analysed by Xray diffraction (XRD). Magnetic studies revealed that this derivative displays very weak antiferromagnetic interactions between the two metal centres (2J = -0.69 cm(-1)). Solution studies (EPR spectroscopy and voltammetry) evidenced the lability of the bridged neutral bipyridine ligand in acetonitrile. The reaction of TCNE (TCNE: tetracyanoethylene) with the copper(I) complex [CuI(TMPA)(CH3CN)](PF6) afforded the salts [(mu-CN)Cu-II(TMPA)(2)](PF6)(C14N8) (2) and [(mu-CN)Cu(TMPA)(2)](PF6)(3) (3). Both compounds were characterised at solid state (XRD) and in solution. Compound (2) shows the presence of the organocyanide entity C14N82 corresponding to the new N-(tetracyanocyclopentadienyl)-3-aza-1,1,2-tricyanoprop- 1-enide ion. (C) 2013 Elsevier B. V. All rights reserved.
https://hal.univ-brest.fr/hal-01175761
Contributor : Nicolas Le Poul <>
Submitted on : Sunday, July 12, 2015 - 9:15:55 PM
Last modification on : Tuesday, November 5, 2019 - 3:44:01 PM
Contributor : Nicolas Le Poul <>
Submitted on : Sunday, July 12, 2015 - 9:15:55 PM
Last modification on : Tuesday, November 5, 2019 - 3:44:01 PM