0000000000656597
AUTHOR
Emeric Lefebvre
Syntheses, structural characterisation and magnetic properties of Fe(ii) and Mn(ii) compounds with the pentacyanopropenido ligand; structural characterisation of a substituted pyrazolo[1,5-a]pyrimidine
International audience; Reactions between the metal(II) salts [M(CH3CN)n](BF4)2 (M = Fe, n = 6; M = Mn, n = 4) and some organic anionic polynitriles were studied. With the pentacyanopropenide anion pcp− [pcp− = (NC)2CC(CN)C(CN)2−], were obtained, according to the experimental conditions, the new complexes [M(pcp)2(H2O)4] (1, M = Fe; 2, M = Mn) and [M(pcp)2] (3, M = Fe; 4 = Mn). Use of the hexacyano-3,4-diazahexadienediide anion [(NC)2CC(CN)NNC(CN)C(CN)22−] instead of pcp− did not afford polynitrile metal complexes but led to a new organic derivative 5, of formula C10N8H2. Crystallographic studies indicated that the isostructural compounds 1 and 2 involve discrete monomeric units with pcp li…
Nickel precursors based on diamagnetic and paramagnetic di(imine)pyridine ligands for magnetic materials: Synthesis, X-ray structures and magnetic studies
International audience; Structural characterization and spectroscopic studies of the (2-acetyl-6-(1-TEMPO-imino)ethyl)pyridine (pat) and the 2,6-bis(1-TEMPO-imino)ethyl)pyridine (pbtMe) ligands are presented. Their electrochemical properties are also discussed. Two new nickel complexes, [NiII(dip)(CH3CN)(H2O)2](BF4)2 (1) (dip = 2,6-(di-iminepyridine)) and [NiII(pbtMe)(CH3CN)3](BF4)2 (2) have been characterized by X-ray diffraction. The reaction of 1 with the tetraethyl ammonium pentacyanopropenide salt (Et4N)(pcp) affords the new compound [NiII(pcp)(dip)(CH3CN)](pcp) (3) for which X-ray diffraction studies evidence an usual bridging μ2 coordination mode for the pentacyanopropenide anion, le…
CCDC 1823715: Experimental Crystal Structure Determination
Related Article: Nathalie Cosquer, Emeric Lefebvre, Bénédicte Douziech, Sylvie Houille, François Michaud, Carlos J. Gómez-García, Françoise Conan|2018|Inorg.Chim.Acta|479|1|doi:10.1016/j.ica.2018.04.026
CCDC 1823714: Experimental Crystal Structure Determination
Related Article: Nathalie Cosquer, Emeric Lefebvre, Bénédicte Douziech, Sylvie Houille, François Michaud, Carlos J. Gómez-García, Françoise Conan|2018|Inorg.Chim.Acta|479|1|doi:10.1016/j.ica.2018.04.026
CCDC 1823713: Experimental Crystal Structure Determination
Related Article: Nathalie Cosquer, Emeric Lefebvre, Bénédicte Douziech, Sylvie Houille, François Michaud, Carlos J. Gómez-García, Françoise Conan|2018|Inorg.Chim.Acta|479|1|doi:10.1016/j.ica.2018.04.026
CCDC 1823712: Experimental Crystal Structure Determination
Related Article: Nathalie Cosquer, Emeric Lefebvre, Bénédicte Douziech, Sylvie Houille, François Michaud, Carlos J. Gómez-García, Françoise Conan|2018|Inorg.Chim.Acta|479|1|doi:10.1016/j.ica.2018.04.026