In:
European Journal of Inorganic Chemistry, Wiley, Vol. 2008, No. 7 ( 2008-03), p. 1141-1146
Abstract:
By controlling the reactant proportion, three sodium‐centered polynuclear octahedral copper(II)–amino acid clusters, [Na⊂{Cu 6 (Ala) 8 (H 2 O)(ClO 4 )}] · 4ClO 4 · 4H 2 O ( 1 ), Na[Na⊂{Cu 6 (Ala) 8 (ClO 4 )}] 2 · 9ClO 4 · 8H 2 O ( 2 ), and [Na⊂{Cu 5 (Ala) 6 (H 2 O) 3 }] n · 5 n (ClO 4 ) · 3 n (H 2 O) ( 3 ) (Ala = L ‐alanine), were synthesized. The structures were characterized by X‐ray structure analysis. The structure of 1 can be described as an octahedron formed with six copper atoms in which four Cu(Ala) 2 ligands bridge two axial copper ions and capture one Na + in the center of the cage and that of 2 as an octahedral dimer that is linked by two carboxylate oxygen atoms. Complex 3 is a chain composed of incomplete octahedron [NaCu 5 ] units linked together by two carboxylate oxygen atoms. The magnetic susceptibility measurements indicate that all three clusters are ferromagnetic overall, although the intercluster interactions may be antiferromagnetic. (© W iley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)
Type of Medium:
Online Resource
ISSN:
1434-1948
,
1099-0682
DOI:
10.1002/ejic.v2008:7
DOI:
10.1002/ejic.200701128
Language:
English
Publisher:
Wiley
Publication Date:
2008
detail.hit.zdb_id:
1475009-0
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