Issue 9, 2004
From the journal:

Dalton Transactions

Self-assembled polynuclear clusters derived from some flexible polydentate dihydrazide ligands

Liang Zhao,a   Virginie Niel,a   Laurence K. Thompson,*a   Zhiqiang Xu,a   Victoria A. Milway,a   Rosemary G. Harvey,a   David O. Miller,a   Claire Wilson,b   Michael Leech,c   Judith A. K. Howardc  and  Sarah L. Heathd  

* Corresponding authors

a Department of Chemistry, Memorial University of Newfoundland, St. John's, Newfoundland, Canada

b School of Chemistry, University of Nottingham, University Park, Nottingham, UK

c Department of Chemistry, University of Durham, Durham, UK

d Department of Chemistry, University of Manchester, Oxford Road, Manchester, UK

Abstract

Polynuclear manganese(II), cobalt(II)/(III), iron(II)/(III) and nickel(II) complexes of a group of flexible polydentate dihydrazone ligands, based on pyridine-2,6-dipicolinic (A), oxalic (B) and malonic (C) subunits are described. Structural details are reported for the linear dinuclear complexes [Ni2(2poap)2(H2O)2](NO3)4·2CH3OH·2.5H2O (1), [Mn2(pttp)(NO3)2(CH3OH)2(H2O)2](NO3)2·H2O (2) and [Mn2(mapttp)2(NO3)2(H2O)2](NO3)2·10H2O (3), a square tetranuclear complex [Co4(pttp)4]Br6·9H2O (4), a tetranuclear tetrahedral complex [Ni4(pttp)6](BF4)6F2·14H2O (7), and a mixed spin state tetranuclear Ni(II) complex [(2pyoap)2Ni4(CH3OH)4]·1.5CH3OH (10), with a diamond-like arrangement of metal ions. The paramagnetic metal centers are well separated in each case, leading to weak antiferromagnetic coupling or non-existent spin exchange.

Graphical abstract: Self-assembled polynuclear clusters derived from some flexible polydentate dihydrazide ligands

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Article information

DOI
https://doi.org/10.1039/B317091H
Article type
Paper
Submitted
06 Jan 2004
Accepted
23 Mar 2004
First published
30 Mar 2004

Dalton Trans., 2004, 1446-1455

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Self-assembled polynuclear clusters derived from some flexible polydentate dihydrazide ligands

L. Zhao, V. Niel, L. K. Thompson, Z. Xu, V. A. Milway, R. G. Harvey, D. O. Miller, C. Wilson, M. Leech, J. A. K. Howard and S. L. Heath, Dalton Trans., 2004, 1446 DOI: 10.1039/B317091H

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