A novel synthesis method of the cobalt formate dehydrate was studied in compare with the literature. In the 3D network dinuclear complex, both Co (Ⅱ) ions are six-coordinated , which have been confirmed by X-ray diffraction analysis. The results showed: monoclinic system, space group P21/C, a=8.682 (2)A,6=7.1719(2) A,c=9.281(3)A,a=r=90 °,0=97.428(4) °, V=573A3, 2=4, Dx=2.145cm-3, F(000) =312,GOF= 1.045, R1=0.0258, wR2=0.0632. In these data, the values of A, and GOF are less than those of literature, which states the structure of complex (I) is fit in the true structure.%本文应用不同于文献报道的实验方法合成了三维网状的二水合甲酸钴,采用单晶衍射表征了该配合物的晶体结构并对其热重性质进行了研究.结果表明晶体属于双核单斜晶系,空间群P21/c,晶胞参数:a=8.682(2)(A),b=7.171(2)(A),c=9.281(3)(A),α=90°,β=97.428(4)°,γ=90°,V=573 (A)3,Z=4,Dx=2.145cm-3,F(000)=372,G OF=1.045,R1=0.0258,wR2=0.0632.与文献报道的R1=0.038,GOF=1.41相比,实验值更接近配合物的“真实”结构.
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