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Halide/pseudohalide complexes of cadmium(II) with benzimidazole: Synthesis, crystal structures and fluorescence properties
- Source :
- Journal of Molecular Structure. 1148:62-72
- Publication Year :
- 2017
- Publisher :
- Elsevier BV, 2017.
-
Abstract
- Two new dinuclear Cd(II) complexes, [CdL1Cl2]2·H2O (1) and [CdL1(N3)2]2·CH3OH (2) and one dicyanamide bridged one-dimensional polynuclear network [CdL1(μ1,5-dca)dca]n (3) of the potentially tridentate NNN-donor Schiff base 2-((1H-benzimidazol-2-yl-ethylimino)-methyl)pyridine (L1) and another dinucler Cd(II) complex [CdL2Cl(dca)]2 (4) of a similar NNN-donor Schiff base ligand 2-((1H-benzimidazol-2-yl-propylimino)-methyl)pyridine (L2), have been synthesized and characterized by elemental analyses, IR and single crystal X-ray crystallography. The ligands L1 and L2 are [1 + 1] condensation products of pyridine-2-carbaldehyde with 2-aminoethyl-1H-benzimidazole and 2-aminopropyl-1H-benzimidazole, respectively. In the complexes 1 and 4 the two Cd(II) centers are held together by the bridged chloride ligands, while in 2 the two Cd(II) centers are bridged by μ1,1-azide ions. Complex 3 has a one-dimensional infinite chain structure in which Cd(II) ions are bridged by single dicyanamide groups in end-to-end fashion. All the metal centers have a distorted octahedral geometry and H-bonding or π⋯π interactions are operative to bind the complex units in the solid state. Furthermore, these complexes have been investigated by thermogravimetric analyses and fluorescence spectra.
- Subjects :
- Benzimidazole
Schiff base
010405 organic chemistry
Ligand
Stereochemistry
Organic Chemistry
Crystal structure
010402 general chemistry
01 natural sciences
0104 chemical sciences
Analytical Chemistry
Inorganic Chemistry
chemistry.chemical_compound
Crystallography
chemistry
Octahedral molecular geometry
Pyridine
Single crystal
Dicyanamide
Spectroscopy
Subjects
Details
- ISSN :
- 00222860
- Volume :
- 1148
- Database :
- OpenAIRE
- Journal :
- Journal of Molecular Structure
- Accession number :
- edsair.doi...........2819aa70dbb8e71c8718551057d665dc