摘要
通过1,2,3-苯三甲酸（H2BTC=1,2,3-连苯三甲酸）与硝酸铜反应合成得到标题配合物。对标题化合物进行了单晶X-射线衍射测试以及傅里叶红外光谱测试,此外还研究了该配合物的磁性质。单晶衍射分析表明：金属原子Cu（Ⅱ）处于变形的CuO_5三角双锥的配位环境中,络合的分子Cu（H_2O）_3（H_2BTC）_2通过结晶水分子与羧基之间的O—H…O氢键作用形成一维超分子链,继而再通过氢键作用形成二维超分子层。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=0.48 cm3·K/mol,韦斯常数θ=0.09 K。由χmT-T曲线可知,化合物中Cu离子之间存在弱铁磁作用。
The title complex was synthesized by solution-based method under room temperature conditions,which were confirmedby X-ray diffraction methods,IR spectroscopyand magnetic measurements. Single-crystal X-ray diffraction show that the Cu（ Ⅱ）atom is in a distorted trigonalbipyramid environment,which are assembled into O—H… O hydrogen bonds between lattice H_2O and carboxyalte oxygen atoms to form 1D chain. The resulted chain are further assembled into 2D supramolecular network structures by hydrogen interactions. Temperature dependence of the magnetic susceptibilities of the compoundin the range of 2 ~ 300 K follows Curie-Weiss law χm= C /（ T-θ） with C = 0. 48 cm3·K/mol and θ = 0. 09 K. The variable temperature magnetic measurements show a weak ferromagnetic behavior.
出处
《化学试剂》
CAS
北大核心
2015年第12期1073-1076,共4页
Chemical Reagents
