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Synthesis, crystal structure, spectroscopy and magnetic properties of a dinuclear CuII complex with 3,5-bis(2-pyridyl)pyrazole bridging ligand
- Source :
-
Journal of Molecular Structure . Feb2005, Vol. 737 Issue 1, p17-21. 5p. - Publication Year :
- 2005
-
Abstract
- Abstract: A dinuclear CuII complex [Cu2(bpp)2(H2O)2](ClO4)2 (1) with 3,5-bis(2-pyridyl)pyrazole (Hbpp), has been synthesized and characterized by elemental analyses, thermal analysis, conductance, UV–vis and IR spectra. The crystal structure of 1, determined by X-ray diffraction technique, reveals that two centrosymmetric CuII centers are bridged by a pair of tetradentate anionic bpp ligands, adopting a square-pyramidal environment with the water ligand occupying the axial site. An interesting feature of this structure is the formation of a two-dimensional supramolecular network through O–H⋯O hydrogen bonds between the water moieties of the cationic [Cu2(bpp)2(H2O)2]2+ subunits and perchlorate anions. The magnetic properties of 1 have been investigated by variable-temperature magnetic susceptibility and EPR measurements. Very strong antiferromagnetic interaction between the CuII centers (with H=-JS1S2, J=-368.3cm-1) has been observed, and the magneto-structural correlations was analyzed. [Copyright &y& Elsevier]
- Subjects :
- *CRYSTALS
*SPECTRUM analysis
*THERMAL analysis
*HYDROGEN bonding
Subjects
Details
- Language :
- English
- ISSN :
- 00222860
- Volume :
- 737
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Journal of Molecular Structure
- Publication Type :
- Academic Journal
- Accession number :
- 16135053
- Full Text :
- https://doi.org/10.1016/j.molstruc.2004.10.005