TY - JOUR
T1 - Synthesis, crystal structures and magnetic properties of transition metal dicyanamide complexes coordinated with pyridyl nitronyl nitroxides
AU - Zhao, Q. H.
AU - Tang, D. Y.
AU - Du, L.
AU - Fang, R. B.
N1 - Funding Information:
This work is supported by the NNSFC (nos. 20361004 and 20561004), the Key Project of Chinese Ministry of Education (no. 205147), and the NSF
PY - 2007/10
Y1 - 2007/10
N2 - Two novel complexes Ni(NITpPy)2[N(CN)2]2 • 2H2O (I) and Zn(NITpPy)2[N(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.
AB - Two novel complexes Ni(NITpPy)2[N(CN)2]2 • 2H2O (I) and Zn(NITpPy)2[N(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.
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U2 - 10.1134/S1070328407100065
DO - 10.1134/S1070328407100065
M3 - Article
AN - SCOPUS:35648984145
SN - 1070-3284
VL - 33
SP - 749
EP - 754
JO - Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya
JF - Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya
IS - 10
ER -