1. A Ladder-like Coordination Polymer [Sr(H2O)4(CuL)2]·(CuL)·2.25H2O Constructed From Metallo-Ligand Na[CuL] and Sr(NO3)2: Crystal Structure and ESR Study
- Author
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Yi-Zhi Jiang and Yang Zou
- Subjects
Dipeptide ,Polymers and Plastics ,Ligand ,Coordination polymer ,Crystal structure ,Triclinic crystal system ,law.invention ,chemistry.chemical_compound ,Crystallography ,Heteronuclear molecule ,chemistry ,law ,Materials Chemistry ,Chelation ,Electron paramagnetic resonance - Abstract
Ligand L (H3L = Glycylglycine, N-[1-(2-hydroxy,5-bromophenyl)propylidene]) has been prepared which contain flexible dipeptide group and substituted phenol group. The ligand react with Cu(NO3)2 to give the metallo-ligand [CuL]−, in which L acting as quadridentate ONNO chelate, coordinate to Cu(II) ion. The metallo-ligand [CuL]− is rigid and has multifunctional groups. Reaction of metallo-ligand with Sr(NO3)2 leads to the formation of the title complexes [Sr(H2O)4(CuL)2]· (CuL)·2.25H2O (1). This heteronuclear compound has been characterized by elemental analyses, spectroscopic analyses, and single crystal diffraction. Structural analyses reveal that the complex was crystallized in triclinic space group P-1 and has intricate 2D net-structure, which contain an infinite 1D [Sr(H2O)4(CuL)2]+ ladder-like structure. In addition ESR (electron spin resonance) property and thermogravimetric analysis of 1 are discussed in detail.
- Published
- 2010
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