Structure protonique et deutonique de l'acide ferrocyanhydrique

Proton-linked bi- and tri-metallic gold cyanide complexes observed by ESI-MS spectrometry

“…Models for such non traditional H-bonds are found in the structures of K[Au(CN) 4 ] Á H 2 O [14] discussed above, [HO-Cr(cyclam)-NC-Cr(CN) 5 ] À [16] and especially H 4 Fe(CN) 6 [32]. In the latter, intermolecular hydrogen bonds between the ferrocyanide ions exhibit oblique angles between the NÁ Á ÁHÁ Á ÁH axis and each Fe-C"N axis [32].…”

Emergence of a CNH and cyano complex based organometallic chemistry

“…The mechanism proposed for this first and only reaction of a cyano bridge comprises initial nucleophilic attack of Hon the carbon atom of the cyano bridge to generate a bridging iminoformyl which then undergoes /3-elimination (eq ll).250 (84)252 have been reported to contain cyanide bridging two metals asymmetrically as a 4-electron donor, i.e., CN is bound at one metal atom as in a normal terminal case and j?2-bound at the other. 82 and 83 have been characterized by X-ray structure analyses. A stereochemical criterion has been developed in this context for distinguishing between 2-electron and 4-electron (tr/ir) donor behavior of bridging CN (and CO) groups,251 according to which the bridging cyanide groups in 82 and 83 are clearly to be placed in the <r,x-domain.…”