Abstract
Planar CuO2Br2 complex exists in a triclinic unit cell. Single crystal EPR and MO-theory give electron spin density delocalization parameters.
Highlights
IntroductionA great importance is a conformational flexibility, which is responsible for syn and anti conformation of the ligand leading to divergent and convergent products with suitable metal ions. Working-sheets about benzimidazole derivatives containing carboxylate groups coordinated to the different
A great importance is a conformational flexibility, which is responsible for syn and anti conformation of the ligand leading to divergent and convergent products with suitable metal ions.1,18–20 Working-sheets about benzimidazole derivatives containing carboxylate groups coordinated to the differentPaper metals have been recently published.9–14 Scientists are trying to investigate the relationship, biological activity and connections of heterocyclic complexes with Cu(II) with biological molecules such as peptides or DNA.21–29 Liu and coworkers investigated the structure and DNA-condensing properties of tris(benzimidazolyl)amine–Cu(II) coordination units bridged by carboxylates, which can act as a new type of gene-delivery systems.21The betaine derivative forms a large molecule with coordinating properties related to COO-group
In this paper we report the synthesis and crystallization of a new coordination compound of Cu(II)Br2 and N-alkylcarboxybenzimidazole as a ligand with monodentate carboxylate group of a betaine unit
Summary
A great importance is a conformational flexibility, which is responsible for syn and anti conformation of the ligand leading to divergent and convergent products with suitable metal ions. Working-sheets about benzimidazole derivatives containing carboxylate groups coordinated to the different. Working-sheets about benzimidazole derivatives containing carboxylate groups coordinated to the different. Liu and coworkers investigated the structure and DNA-condensing properties of tris(benzimidazolyl)amine–Cu(II) coordination units bridged by carboxylates, which can act as a new type of gene-delivery systems.. The betaine derivative forms a large molecule with coordinating properties related to COO-group. Metal–betaine interactions have been intensively studied in a series of coordination polymers where betaine molecules act as bridging units in dimeric and chain structures.. Cu(II) ions are coordinated by betaine carboxylate group and halide anions ClÀ or BrÀ. In this paper we report the synthesis and crystallization of a new coordination compound of Cu(II)Br2 and N-alkylcarboxybenzimidazole as a ligand with monodentate carboxylate group of a betaine unit. Measurements of powder and single crystal electron paramagnetic resonance (EPR) spectral parameters and their analysis by Molecular Orbital theory gave detailed electronic structure of the Cu(II) complex with delocalization parameters of unpaired electron density via the d-orbitals
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