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Bis(benzimidazolyl)amine copper complexes with a synthetic 'histidine brace' structural motif relevant to polysaccharide monooxygenases

Castillo, Ivan ; Neira, Andrea C. ; Nordlander, Ebbe LU and Zeglio, Erica (2014) In Inorganica Chimica Acta 422. p.152-157
Abstract
Reaction of Cu2+ salts with the benzimidazole-N-methylated bis[(1-methyl-2-benzimidazolyl)ethyl]amine ligand 2BB results in either bi- or monometallic complexes. Spectroscopic and solid state characterization reveals either square pyramidal or trigonal bipyramidal coordination geometries around the cupric ions. In [{2BBCu(mu-F)}(2)](BF4)(2), the dicopper structure is determined by the bridging nature of the fluoro ligands, which complement the T-shape arrangement of N-3 donors provided by 2BB to define a square pyramidal (or capped distorted tetrahedral) coordination geometry. The monocopper complexes 2BBCuCl(2) and [2BBCu(H2O)(2)](OTf)(2) are characterized by a trigonal bipyramidal geometry both in solution and in the solid state. In all... (More)
Reaction of Cu2+ salts with the benzimidazole-N-methylated bis[(1-methyl-2-benzimidazolyl)ethyl]amine ligand 2BB results in either bi- or monometallic complexes. Spectroscopic and solid state characterization reveals either square pyramidal or trigonal bipyramidal coordination geometries around the cupric ions. In [{2BBCu(mu-F)}(2)](BF4)(2), the dicopper structure is determined by the bridging nature of the fluoro ligands, which complement the T-shape arrangement of N-3 donors provided by 2BB to define a square pyramidal (or capped distorted tetrahedral) coordination geometry. The monocopper complexes 2BBCuCl(2) and [2BBCu(H2O)(2)](OTf)(2) are characterized by a trigonal bipyramidal geometry both in solution and in the solid state. In all complexes, the T-shape N-3 donor set of 2BB is analogous to the coordination environment of the copper ions provided by a 'histidine brace' and an additional histidine imidazole in the active site of polysaccharide monooxygenases. (C) 2014 Elsevier B. V. All rights reserved. (Less)
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organization
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type
Contribution to journal
publication status
published
subject
keywords
Copper complexes, Benzimidazoles, X-ray crystal structures, Tridentate, ligands
in
Inorganica Chimica Acta
volume
422
pages
152 - 157
publisher
Elsevier
external identifiers
  • wos:000343585800023
  • scopus:84907991830
ISSN
0020-1693
DOI
10.1016/j.ica.2014.06.027
language
English
LU publication?
yes
additional info
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Physics (S) (011001060)
id
bc7d966d-d95a-4585-8245-cf22130f3db0 (old id 4783728)
date added to LUP
2016-04-01 13:14:30
date last changed
2021-08-18 02:15:29
@article{bc7d966d-d95a-4585-8245-cf22130f3db0,
  abstract     = {Reaction of Cu2+ salts with the benzimidazole-N-methylated bis[(1-methyl-2-benzimidazolyl)ethyl]amine ligand 2BB results in either bi- or monometallic complexes. Spectroscopic and solid state characterization reveals either square pyramidal or trigonal bipyramidal coordination geometries around the cupric ions. In [{2BBCu(mu-F)}(2)](BF4)(2), the dicopper structure is determined by the bridging nature of the fluoro ligands, which complement the T-shape arrangement of N-3 donors provided by 2BB to define a square pyramidal (or capped distorted tetrahedral) coordination geometry. The monocopper complexes 2BBCuCl(2) and [2BBCu(H2O)(2)](OTf)(2) are characterized by a trigonal bipyramidal geometry both in solution and in the solid state. In all complexes, the T-shape N-3 donor set of 2BB is analogous to the coordination environment of the copper ions provided by a 'histidine brace' and an additional histidine imidazole in the active site of polysaccharide monooxygenases. (C) 2014 Elsevier B. V. All rights reserved.},
  author       = {Castillo, Ivan and Neira, Andrea C. and Nordlander, Ebbe and Zeglio, Erica},
  issn         = {0020-1693},
  language     = {eng},
  pages        = {152--157},
  publisher    = {Elsevier},
  series       = {Inorganica Chimica Acta},
  title        = {Bis(benzimidazolyl)amine copper complexes with a synthetic 'histidine brace' structural motif relevant to polysaccharide monooxygenases},
  url          = {http://dx.doi.org/10.1016/j.ica.2014.06.027},
  doi          = {10.1016/j.ica.2014.06.027},
  volume       = {422},
  year         = {2014},
}