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

Mohammed B. Fugu, Rebecca J. Ellaby, Helen M. O'Connor, Mateusz B. Pitak, Wim Klooster, Peter N. Horton, Simon J. Coles, Mohammed H. Al-mashhadani, Igor F. Perepichka, Euan K. Brechin, Leigh F. Jones*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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)]3H(2)O4MeOH (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 (lambda(PL) similar to 421-450 nm) with a bathochromic shift of the emission (similar to 15-30 nm) from solution to the solid state.

Original languageEnglish
Pages (from-to)10180-10190
Number of pages11
JournalDalton Transactions
Volume48
Issue number27
Early online date4 Jun 2019
DOIs
Publication statusPublished - 21 Jul 2019

Keywords

  • COORDINATION CHEMISTRY
  • MAGNETIC-PROPERTIES
  • CRYSTAL-STRUCTURES
  • GROUND-STATE
  • ACIDS
  • EXTRACTION
  • INHIBITORS
  • COMPLEXES
  • EVOLUTION
  • CLUSTERS

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