Soliman Ahmed A, Taha Ali, Linert Wolfgang
Department of Chemistry, Faculty of Science, UAE University, P.O. Box 17551, Al-Ain, United Arab Emirates.
Spectrochim Acta A Mol Biomol Spectrosc. 2006 Jul;64(4):1058-64. doi: 10.1016/j.saa.2005.09.015. Epub 2006 Feb 2.
Adducts of Ni(II)-square planar complexes Ni(beta-dik)(Me(4)en), with a series of bidentate ligands (L), where beta-dik=acetylacetonate (acac) and benzoylacetonate (bzac), Me(4)en=N,N,N',N'-tetramethylethylenediamine and L=Me(4)en, 2,2'-bipyridine (bipy), ethylenediamine (en) and oxalate (C(2)O(4)(2-)) have been synthesized and characterized by spectral, thermal and magnetic measurements. Formation constants of the adducts formed from a series of ternary mixed Ni(II) complexes with the general formula Ni(beta-dik)(diam) with 1,10-phenanthroline (phen), 2,2'-bipyridine (bipy) and pyridine were spectrophotometrically determined. Thermodynamic parameters of the adduct formation between nickel(II) square-planar chelates and pyridine (py), 2,2'-bipyridine (bipy) and acetylacetone (acac) were also spectrophotometrically determined in 1,2-dichloroethane. The thermal stability of the isolated adducts was studied using thermogravimetry and the decomposition schemes of the adducts were given.
已合成了镍（II）平面正方形配合物[Ni（β-二酮）（Me₄en）]⁺与一系列双齿配体（L）的加合物，其中β-二酮=乙酰丙酮（acac）和苯甲酰丙酮（bzac），Me₄en = N，N，N'，N'-四甲基乙二胺，L = Me₄en、2,2'-联吡啶（bipy）、乙二胺（en）和草酸根（C₂O₄²⁻），并通过光谱、热学和磁性测量对其进行了表征。通过分光光度法测定了一系列通式为[Ni（β-二酮）（二胺）]⁺的三元混合镍（II）配合物与1,10-菲咯啉（phen）、2,2'-联吡啶（bipy）和吡啶形成的加合物的形成常数。还在1,2-二氯乙烷中通过分光光度法测定了镍（II）平面正方形螯合物与吡啶（py）、2,2'-联吡啶（bipy）和乙酰丙酮（acac）之间加合物形成的热力学参数。使用热重分析法研究了分离出的加合物的热稳定性，并给出了加合物的分解方案。
