Synthesis,crystal structures and magnetic properties of transition metal dicyanamide complexes coordinated with pyridyl nitronyl nitroxides |
| |
| Authors: | Q H Zhao D Y Tang L Du R B Fang |
| |
| Institution: | (1) Department of Chemistry, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan University, Kunming, 650091, P. R. China |
| |
| Abstract: | Two novel complexes Ni(NITpPy)2N(CN)2]2 · 2H2O (I) and Zn(NITpPy)2N(CN)2]2 · 2H2O (II) (NITpPy = 2-(p-pyridyl)-4,4,5,5- tetramethylimidazoline-1-oxyl-3-oxide) were synthesized and characterized by infrared spectra, elemental
analyses, and UV-Vis techniques. The crystal structures of both complexes have been determined by X-ray diffraction analysis.
Both complexes are of centrosymmetric distorted octahedral co-ordination geometry in which metal ions are bound to two dicyanamide
anions, two water molecules, and two radicals through the nitrogen atom of pyridine rings and show one-dimensional chain structure
via hydrogen bonds. The magnetic properties of complexes I and II were investigated in the temperature range 5–300 K and discussed
in detail. The two compounds exhibit weak intermolecular antiferromagnetic interaction. In complex II, the diamagnetic metal
zinc just plays the role of a bridge.
The article was submitted by the authors in English. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
