کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1340736 | 979749 | 2006 | 6 صفحه PDF | دانلود رایگان |
Complexes of the general formula [Ni2L2(μ1,1-N3)2(N3)2] have been synthesised in good yields by reacting Ni(NO3)2 · 6H2O with L in the presence of excess of sodium azide in methanol at room temperature. Here L is N,N-bis(2-pyridylmethyl)amine (L1) and N-(2-pyridylmethyl)-N′,N′-diethylethylenediamine (L2). The X-ray structures of both compounds reveal that the N,N,N coordinating reduced Schiff bases are ligated facially. The Ni–Nazido–Ni angle is ∼100° and the Ni⋯Ni separation is ∼3.2 Å. The variable temperature magnetic susceptibility measurements of the two complexes show ferromagnetic behavior.
The reaction of Ni(NO3)2 · 6H2O with N,N,N-coordinating reduced Schiff base ligands in methanol in the presence of excess azide afforded μ1,1-N3 bridged dinuclear nickel(II) complexes in excellent yields. Variable temperature magnetic susceptibility measurements confirm the ferromagnetic behavior of the complexes.Figure optionsDownload as PowerPoint slide
Journal: Polyhedron - Volume 25, Issue 1, 2 January 2006, Pages 25–30