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用X射线单晶衍射方法测定了二乙酰丙酮氧钒与γ-甲基吡啶加合物VO(CH_3COCHCOCH_3)_2·NC_5H_4CH_3的晶体结构.晶体属空间群Cm(C_8~3),晶胞参数α=8.288(3)A,b=13.983(7)A,c=11.459(4)A,β=138.32(2)°,Ζ=2.由SYNTEX R3型四圆衍射仪收集了876个独立衍射数据,以Patterson重原子法导出粗结构,经块矩阵最小二乘法修正,最终得偏离因子R=0.093.所得结果与相应吡啶1∶1加合物的分子结构参数进行了对比,探讨了VO(acac)_2·L型这类化合物的结构化学特点,并对第六位配键的键型进行了分析和讨论.
The crystal structure of VO (CH_3COCHCOCH_3) _2 · NC_5H_4CH_3 adduct of vanadyl diacetylacetonate and γ-picoline was determined by X-ray single crystal diffraction method. The crystal belongs to space group Cm (C_8 ~ 3) 8.288 (3) A, b = 13.983 (7) A, c = 11.459 (4) A, β = 138.32 (2) °, Z = 2. 876 independent diffraction data were collected by the SYNTEX R3 four- The crude structure was deduced by the method of Patterson’s heavy atom and corrected by the least squares method of block matrix. Finally, the deviation factor R = 0.093 was obtained.The molecular structure parameters of the corresponding pyridine 1: 1 adduct were compared, and the VO (acac) _2 · L type of chemical structural characteristics of these compounds, and the sixth key with the bond were analyzed and discussed.