中文摘要：

以2,2′-联吡啶和硝酸根为混合配体,通过水热反应合成了一个新的钴（Ⅱ）配合物[Co（2,2′-bipy）2（NO3）]2SO4.（H2O）5,用元素分析、红外光谱、X-射线单晶衍射表征了配合物的结构。标题配合物晶体属单斜晶系,P2（1）/n空间群,晶体学参数：a=0.70932（9）nm,b=1.9528（2）nm,c=1.6841（2）nm,β=96.835（2）°,V=2.3161（5）nm3,Z=2,D=1.495g/cm^3。配合物中每个钴（Ⅱ）离子与两个2,2′-联吡啶分子中的4个N原子、1个硝酸根的两个O原子形成六配位的变形八面体结构。

英文摘要：

A novel cobalt （ Ⅱ ） complex [ Co （ 2, 2＇-bipy ）2 （NO3） ]2SO4 · （ H2O）5 was hydrothcrmally synthesized using 2,2＇-bipyridine and nitric acid group as the mixed ligands. Its structure was characterized by IR, elemental analysis and singlecrystal X-ray diffractometry. Crystallographic data for this complex were as follows： It was a monoclinic system, with a space group of P2（1）/n, a=0.70932（9）nm,b=1.9528（2）nm,c=1.6841（2）nm,β=96.835（2）°,V=2.3161（5）nm3,Z=2,D=1.495g/cm^3,and Z = 2.The cobalt （ 11 ） ion is six-coordinated with four nitrogen atoms of two 2, 2＇-bipyridine molecules,and two oxygen atoms from nitrate radical to form a distorted oetahcdral coordination geometry.