乙酰丙酮钴(Ⅲ)配合物的合成及其结构表征

Preparation and Structural Determination of Co(Ⅲ) Acetylacetonate

合成了乙酰丙酮钴,并对其进行了红外光谱和X-单晶衍射分析。结果表明:配合物组成为Co(C5H7O2)3;单斜晶系,P2(1)/c空间群;晶胞参数a=13.8958(15),α=90;°b=7.4759(8),β=98.4340(10)°;c=16.2242(17),γ=90°;晶胞体积V=1667.2(3)3,Z=4,Mr=356.25,Dc=1.419 Mg/m3;R1=0.0316,wR2=0.0857[I>2sigma(I)]。钴(Ⅱ)在反应过程中被氧化成Co(Ⅲ),与3个乙酰丙酮负离子(acac-)形成了双齿6配位化合物。

Cobalt （ Ⅲ ） acetylacetonate is prepared and characterized by IR and X-ray diffraction. The results show： the complex is Co（ C5H7O2） 3; the crystal belongs to the monoclinic crystal group P2 （1）/c; unit cell parameters α =90 °; b =7. 4759（8）A, β =98. 4340（10） °; c = 16.2242（ 17）A γ=90, v = 1667.2（3）A^3, Z=4, Mr =356.25, Dc = 1. 419 Mg/m^3; R1 =0. 0316, wR2 =0.0857[I 〉2sigma（I） ]. Cobalt （Ⅱ） is converted to Cobalt （Ⅲ ） in the reaction and forms di - dentate six coordination complex with three aeaee.