Complexes of Copper with a Flexible Bis-benzimidazole Ligand

Authors

  • Gérald Bernardinelli
  • Anita Kübel-pollak
  • Stephane Rüttimann
  • Alan F. Williams

DOI:

https://doi.org/10.2533/chimia.1992.155

Abstract

The flexible bidentate ligand 1,3-bis(benzimidazol-2-yl)propane, L3, and its N-methylated derivative L4, form complexes with CUI and CUII. The X-ray crystal structure of [Cu(L4)(MeCN)] (PF6) (1) shows a trigonal coordination of the CuI with the eight-membered chelate ring adopting a half-chair conformation. With CuII in EtOH, L3 forms dimeric [(L3)Cu(μ-EtO)2Cu(L3)](ClO4)2 · 2EtOH (2) whose X-ray crystal structure shows CuII in a distorted square-planar environment with one bidentate ligand and two bridging ethoxides. The chelate ring now has a boat-chair conformation which forms a hydrophobic pocket around the metal.

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Published

1992-04-29

How to Cite

[1]
G. Bernardinelli, A. Kübel-pollak, S. Rüttimann, A. F. Williams, Chimia 1992, 46, 155, DOI: 10.2533/chimia.1992.155.