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Titolo:
Synthesis, structure and magnetic properties of a novel octairon(III) citrate complex
Autore:
Gautier-Luneau, I; Fouquard, C; Merle, C; Pierre, JL; Luneau, D;
Indirizzi:
Univ Grenoble 1, Lab Chim Biomimet, LEDSS, CNRS,UMR 5616, F-38041 Grenoble9, France Univ Grenoble 1 Grenoble France 9 RS,UMR 5616, F-38041 Grenoble9, France CEA, DRFMC, Lab Chim Inorgan & Biol, UMR 5046, F-38054 Grenoble, France CEA Grenoble France F-38054 n & Biol, UMR 5046, F-38054 Grenoble, France
Titolo Testata:
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS
fascicolo: 14, , anno: 2001,
pagine: 2127 - 2131
SICI:
1472-7773(2001):14<2127:SSAMPO>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
IRON ACETATE COMPLEXES; MIXED-VALENCE; ELECTRON-TRANSFER; PHASE-TRANSITION; SOLID-STATE; TRINUCLEAR; SPECTROSCOPY; MONONUCLEAR; RELEVANCE; IRON(III);
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Gautier-Luneau, I Univ Grenoble 1, Lab Chim Biomimet, LEDSS, CNRS,UMR 5616, BP 53, F-38041 Grenoble 9, France Univ Grenoble 1 BP 53 Grenoble France 9 noble 9, France
Citazione:
I. Gautier-Luneau et al., "Synthesis, structure and magnetic properties of a novel octairon(III) citrate complex", J CHEM S DA, (14), 2001, pp. 2127-2131

Abstract

A novel octairon(III) citrate complex, (Him)(9)[Fe-8(mu (3)-O)(2)(mu (2)- OH)(2)(cit)(6)(CH3CO2)(2)(im)(2)](ClO4). 13H(2)O has been obtained from DMFsolution, by reacting ferric perchlorate, citric acid and imidazole in a 1:1:5 ratio. This compound crystallizes in the monoclinic space group P2(1)/n with a=15.271(1), b=19.940(1), c=44.197(1) Angstrom, beta =91.965(1)degrees, V=13450.2(9) Angstrom (3) and Z=4. The complex consists of two equivalent tetranuclear units, which are not symmetrically related and are linked together by two of the six tetraionized citrate ligands. The iron(iii) ions are antiferromagnetically coupled. Assumption of a four S=5/2 spin system based on H=-2 Sigma (i <j) J(ij)S(i)S(j) leads to satisfactory agreement with the experimental magnetic behavior, with g=2.0 and J(13)=J(23)=-32.1 cm(-1), J(12)=J(14)=-14.5 cm(-1), J(24)=J(34)=-11.1 cm(-1).

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Documento generato il 14/07/20 alle ore 12:09:25