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Synthesis, spectra and crystal structure of a CuII complex exhibiting novel two-dimensional joint-ladder like hydrogen-bonding pattern with an amino-acid type diazamesocyclic ligand
- Source :
-
Journal of Molecular Structure . Apr2004, Vol. 692 Issue 1-3, p195. 5p. - Publication Year :
- 2004
-
Abstract
- The mononuclear CuII complex [CuL(H2O)]·2H2O (1) with a diazamesocyclic ligand bearing two functional carboxylic donor groups, 1,5-diazacyclooctane-N,N′-diacetate acid (H2L), has been synthesized and characterized by elemental analyses, thermal analyses and IR spectrum. The crystal structure of 1 has been determined by X-ray diffraction analysis, which revealed that the CuII center coordinates to the tetradentate chelated ligand L and an axial water molecule, and the 1,5-diazacyclooctane (DACO) moiety adopts a boat/chair conformation that inhibits the axial coordination at the metal center to form this penta-coordinated pyramidal (CuN2O3) complex. The most striking feature of this structure is the formation of a novel two-dimensional joint-ladder like architecture through multiple inter- and intramolecular O–H⋯O hydrogen bonds. The solution behaviors of 1 have been further investigated by conductance, UV–Vis and ESR techniques. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00222860
- Volume :
- 692
- Issue :
- 1-3
- Database :
- Academic Search Index
- Journal :
- Journal of Molecular Structure
- Publication Type :
- Academic Journal
- Accession number :
- 12740404
- Full Text :
- https://doi.org/10.1016/j.molstruc.2004.01.031