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在不同的温度条件下,我们制得了(QuinH)_4[Mo_2O_4(NCS)_6]的同分异构体(Ⅰ)和(Ⅱ)(此中,(Quin)=喹啉(C9H7N)).(Ⅰ)属单斜晶系,空间群P21/b;晶胞参数,a=10.991(11)A°,b=21.370(8)A,c=20.434(6)A°,γ=90.01(5)°;Mr=1125.0,dm=1.56g/cm3,Z=4(dcalc=1.557g/cm3).(Ⅱ)属单斜晶系,空间群P21/b,晶胞参数:a=10.19A°,b=15.24A°,C=16.36A°,γ=111.5°Mr=1125.0,dm=1.605g/cm3,Z=2(dcalc=1.580g/cm3).用MoKa射线在Enraf Nonius CAD-4四园衍射仪收集晶体(Ⅰ)的衍射数据.通过三维Patterson函数和Fourier函数合成方法,确定了(Ⅰ)的晶体和分子结构.最后,根据 Ⅰ>3σ(Ⅰ)的2956个独立衍射点的强度数据,用最小二乘法把结构精修到R=0.057.(Ⅰ)的阴离子[MO2O4(NCS)6]4-是双氧桥双核结构,由共棱(Ob-Ob)的一对扭曲八面体组成.分子具有接近C2V的对称性.Quin?
(Quin) = quinoline (C9H7N) was prepared under different temperature conditions. (QuinH) _4 [Mo_2O_4 (NCS) _6] isomers (Ⅰ) and (Ⅱ) (I) belongs to the monoclinic system with space group P21 / b; unit cell parameters a = 10.991 (11) A °, b = 21.370 (8) A and c = 20.434 (6) A ° , Γ = 90.01 (5) °; Mr = 1125.0, dm = 1.56 g / cm3, Z = 4 (dcalc = 1.557 g / cm3). (Ⅱ) belongs to the monoclinic system with the space group P21 / b. The unit cell parameters are a = 10.19A °, b = 15.24A °, C = 16.36A ° and γ = 111.5 ° Mr = 1125. 0, dm = 1.605 g / cm3, Z = 2 (dcalc = 1.580 g / cm3). Diffraction data for crystal (I) was collected on an Enraf Nonius CAD-4 four-garden diffractometer using MoKa radiation. Through three-dimensional Patterson function and Fourier function synthesis method, the crystal and molecular structure of (Ⅰ) were confirmed. Finally, based on the intensity data of 2956 independent diffraction points of I> 3σ (I), the structure was refined to R = 0.057 by least square method. (I) Anion [MO2O4 (NCS) 6] 4- is a double oxygen bridge binuclear structure consisting of a pair of distorted octahedra of Ob-Ob. The molecules have symmetry close to C2V. Quin?