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采用室温溶液法合成标题配合物[Cu(phen)(nap)2]·H2O(phen=1,10-邻菲罗啉,Hnap=萘普生)。对其进行X-射线衍射、红外光谱和差热分析等表征,并测试其磁性质。X-射线单晶衍射分析发现:该物质属于四方晶系,P21212空间群,晶胞参数a=2.923 6(6)nm,b=0.582 3(1)nm,c=0.991 0(2)nm,β=90°。结构分析表明:金属原子Cu(Ⅱ)处于变形的CuN2O2四面体配位环境,离散的配合分子间通过O—H…O氢键和π…π堆积作用形成一维超分子链,继而通过C—H…O氢键作用形成二维层,最后通过C—H…O氢键将层连接成三维超分子结构。在2~300 K温度范围内,配合物遵循居里-韦斯定律,居里常数C=0.41 cm3·K/mol,韦斯常数θ=-0.11 K。由χmT-T曲线可知,在室温到18 K间,[Cu(phen)L2]·H2O中Cu2+离子间存在弱铁磁作用;在18~2 K间为弱反铁磁作用。
The title complex [Cu (phen) (nap) 2] · H2O (phen = 1,10-phenanthroline and Hnap = naproxen) was synthesized by room temperature solution method. It was characterized by X-ray diffraction, infrared spectroscopy and differential thermal analysis, and its magnetic properties were tested. X-ray single crystal diffraction analysis showed that the material belongs to the tetragonal system P21212 space group with unit cell parameters of a = 2.923 6 (6) nm, b = 0.582 3 (1) nm and c = 0.991 0 β = 90 °. Structural analysis shows that the Cu (Ⅱ) metal atom is in the deformed tetrahedral coordination environment of CuN2O2. One-dimensional supramolecular chains are formed by O-H ... O hydrogen bonds and π ... π stacking interactions among discrete coordination molecules, H ... O hydrogen bonds form a two-dimensional layer, and finally the layers are connected into a three-dimensional supramolecular structure through C-H ... O hydrogen bonds. In the temperature range of 2 ~ 300 K, the complex follows the Curie-Weiss law with Curie constant C = 0.41 cm3 · K / mol and Weiss constant θ = -0.11 K. From the curve of χmT-T, it can be seen that there exists a weak ferromagnetic interaction between Cu2 + ions in [Cu (phen) L2] · H2O and a weak antiferromagnetic effect between 18 and 2 K between room temperature and 18 K.