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Dalton Trans. 2019 Jul 21;48(27):10180-10190. doi: 10.1039/c9dt01531k. Epub 2019 Jun 12.

Mono- and ditopic hydroxamate ligands towards discrete and extended network architectures.

Author information

1
School of Natural Sciences, Bangor University, Bangor, Wales LL57 2DG, UK. leigh.jones@bangor.ac.uk.
2
EaStCHEM School of Chemistry, David Brewster Road, University of Edinburgh, Edinburgh, Scotland EH9 3FJ, UK.
3
UK National Crystallographic Service, Chemistry, Faculty of Natural and Environmental Sciences, University of Southampton, England, SO17 1BJ, UK.
4
School of Natural Sciences, Bangor University, Bangor, Wales LL57 2DG, UK. leigh.jones@bangor.ac.uk and Chemistry Department, College of Science, Al-Nahrain University, Baghdad, Iraq.
5
Shaanxi Institute of Flexible Electronics, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, Shaanxi, China.

Abstract

A family of mono- and ditopic hydroxamic acids has been employed in the synthesis and structural and physical characterisation of discrete (0D) and (1- and 2-D) extended network coordination complexes. Examples of the latter include the 1-D coordination polymer {[Zn(ii)(L3H)2]·2MeOH}n (5; L3H2 = 2-(methylamino)phenylhydroxamic acid) and the 2-D extended network {[Cu(ii)(L2H)(H2O)(NO3)]·H2O}n (5; L2H2 = 4-amino-2-(acetoxy)phenylhydroxamic acid). The 12-MC-4 metallacrown [Cu(ii)5(L4H)4(MeOH)2(NO3)2]·3H2O·4MeOH (7) represents the first metal complex constructed using the novel ligand N-hydroxy-2-[(2-hydroxy-3-methoxybenzyl)amino]benzamide (L4H3). Variable temperature magnetic susceptibility studies confirm strong antiferromagnetic exchange between the Cu(ii) centres in 7. Coordination polymer 5 shows photoluminescence in the blue region (λPL∼ 421-450 nm) with a bathochromic shift of the emission (∼15-30 nm) from solution to the solid state.

PMID:
31187830
DOI:
10.1039/c9dt01531k

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