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A dodecanuclear copper(ii) cage self-assembled from six dicopper building units

Dalton Transactions, ISSN: 1477-9226, Vol: 43, Issue: 10, Page: 4076-4085
2014
  • 14
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  • 19
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Metrics Details

  • Citations
    14
    • Citation Indexes
      14
  • Captures
    19

Article Description

Reaction of the dinucleating phenol-based ligand, Hbpmp (2,6-bis-[(3-hydroxy-propylimino)-methyl]-4-methyl-phenol), with Cu ions in the presence of a hybrid base (NEt and NaN) necessary for the in situ generation of required numbers of hydroxido ions, results in the formation of a novel NO capped and HO supported {Cu} coordination complex {Cu (μ-OH)(μ-Hbpmp) (μ-NO)}(NO) (OH)·2HO·2MeOH (1). When the components are combined in right proportions (metal:ligand:NEt :NaN = 2:1:3:2) in MeOH, twelve Cu ions assemble in a cuboctahedral geometry, containing six square and eight triangular faces around a considerable void space. Six of the eight [Cu] triangular faces are bound by the six Hbpmp ligands with six free pendant propanol arms around the central hexagonal plane. X-ray structure determination indicates new geometrical features for the core formation and reveals the face-capping potential of the Hbpmp ligand for the growth of a cuboctahedral coordination cage with the support of anions like HO and NO. The experimentally observed (J/k = -173 K) strong antiferromagnetic coupling within the Cu complex has been justified by the DFT calculations. © 2014 The Royal Society of Chemistry.

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