dimers of composition [{Fe4C(CO)12Cu2(m-X)}2-]n , where X are bridging ligands with different size, donor atom and charge: {X = phenylthiolate, PhS , (n = 2 (1)), pyrazolate, C3H3N2 , (n = 2 (2)), diphenolate, (O eC6H4eC6H4eO2 , n = 4 (3)}. All anions have been characterized by elemental analysis, IR and 1H NMR spectroscopy and by single crystal X-ray diffraction. They share the same structure with the known anion [{Fe4C(CO)12Cu2(m-Cl)}2]2 (X = Cl, (4)), with the obvious difference in the size of the ring, depending on the number of atoms in the spacer. All these macrocycles display rich electrochemical behaviour, undergoing two reversible reductions and two irreversible monoelectronic oxidations, poorly affected by the substituent and therefore assigned to the Fe4C core. Electronic communication increases in the order 3 z 4 > 1 > 2.

Cyclic dimers of variable size, formed from FeCu carbide clusters: Synthesis, structure and electrochemical behaviour of [{Fe4C(CO)12Cu2(m-X)}2]n -, (X = phenylthiolate, pyrazolate, (n = 2) or diphenolate (n = 4)) / R. Della Pergola, A. Sironi, M. Moret, S. Bergantin, P.R. Mussini, M. Panigati. - In: JOURNAL OF ORGANOMETALLIC CHEMISTRY. - ISSN 0022-328X. - 728(2013), pp. 23-29.

Cyclic dimers of variable size, formed from FeCu carbide clusters: Synthesis, structure and electrochemical behaviour of [{Fe4C(CO)12Cu2(m-X)}2]n -, (X = phenylthiolate, pyrazolate, (n = 2) or diphenolate (n = 4))

A. Sironi;P.R. Mussini;M. Panigati
2013

Abstract

dimers of composition [{Fe4C(CO)12Cu2(m-X)}2-]n , where X are bridging ligands with different size, donor atom and charge: {X = phenylthiolate, PhS , (n = 2 (1)), pyrazolate, C3H3N2 , (n = 2 (2)), diphenolate, (O eC6H4eC6H4eO2 , n = 4 (3)}. All anions have been characterized by elemental analysis, IR and 1H NMR spectroscopy and by single crystal X-ray diffraction. They share the same structure with the known anion [{Fe4C(CO)12Cu2(m-Cl)}2]2 (X = Cl, (4)), with the obvious difference in the size of the ring, depending on the number of atoms in the spacer. All these macrocycles display rich electrochemical behaviour, undergoing two reversible reductions and two irreversible monoelectronic oxidations, poorly affected by the substituent and therefore assigned to the Fe4C core. Electronic communication increases in the order 3 z 4 > 1 > 2.
Copper; Electrochemistry; Heterometallic clusters; Interstitial carbide; Iron; Substitution reactions
Settore CHIM/03 - Chimica Generale e Inorganica
Settore CHIM/01 - Chimica Analitica
Settore CHIM/02 - Chimica Fisica
JOURNAL OF ORGANOMETALLIC CHEMISTRY
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/224278
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