Skip to main content
Research article - Peer-reviewed, 2003

Synthesis, X-ray single crystal and magnetic study of new heteroleptic late transition metal alkoxides with tetranuclear square planar metal core, Co4Cl2(OC2H4OEt)6, Co4(OMe)2(acac)6(MeOH)2 and Zn4(OMe)2(acac)6(C7H8)

Seisenbaeva, Gulaim; Kritikos, Mikael; Kessler, Vadim


Interaction of 4 equiv. CoCl2 with 6 equiv. of NaOC2H4OEt in toluene/HOC2H4OEt medium provided Co4Cl2(OC2H4OEt)(6) (1) with practically quantitative yield. Reaction of Co(acac)(2) with Ti(OMe)(4) in 1:1 ratio in toluene gave Co-4(OMe)(2)(acac)(6)(MeOH)(2) (2) with moderate yields. The same reaction for Zn(acac)(2) resulted in formation of Zn-4(OMe)(2)(acac)(6)(C7H8) (3), The structures of 1-3 contain planar tetranuclear cores of M-4(mu(3)-OR)(2)(mu(2)-OR)(4) type ([Ti(OMe)(4)](4) type structure), where the metal atoms are pentacoordinated in 1, hexacoordinated in 2, and both penta- and hexacoordinated in 3. The magnetic measurements have revealed competing ferromagnetic and antiferromagnetic interactions between the 4 Co(II) atoms in 1, but only ferromagnetic in 2. (C) 2003 Elsevier Ltd. All rights reserved.


antiferromagnetic interaction; alkoxide; late transition metal; X-ray; molecular structure

Published in

2003, volume: 22, number: 18, pages: 2581-2586

Authors' information

Swedish University of Agricultural Sciences, Department of Chemistry
Kritikos, Mikael
Stockholm University
Swedish University of Agricultural Sciences, Department of Chemistry

UKÄ Subject classification

Materials Chemistry
Inorganic Chemistry

Publication Identifiers


URI (permanent link to this page)