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白色的[Bu~tSAg]_n与PPh_3溶于CS_2中,析出桔黄色晶体。经X射线单晶结构分析其结构为(PPh_3)_2Ag(S_2CSBu~t)。发现了一个CS_2在Ag—S键中的插入反应。此反应为可逆反应,晶体在120—230℃失去CS_2。晶体属三斜晶系,空间群PI,a=10.571(1),b=13.638(3),c=14.391(3)A,a=88.75(2),β=72.84(1),γ=80.58(1)°,V=1954.9A~3,D_o=1.36g/cm~3,D_m=1.36g/cm~3,Z=2.3572个衍射点参与修正,R=0.045,R_w=0.043。Ag原子以变形四面体与硫代黄原酸配体Bu~tS—CS_2的两个S原子及两个PPh_3的P原子配位。插入反应形成的CS_3基团基本上共面,其C—S键长比CS_2中的键长明显加长,而比单键的C—S键长要短,并在红外光谱上出现特征吸收峰。
White [Bu ~ tSAg] _n and PPh_3 were dissolved in CS_2 and orange crystals were precipitated. The structure of X-ray single crystal was (PPh_3) _2Ag (S_2CSBu ~ t). A CS_2 insertion was found in the Ag-S bond. This reaction is reversible and the crystal loses CS_2 at 120-230 ° C. The crystal belongs to the triclinic system with space group PI, a = 10.571 (1), b = 13.638 (3), c = 14.391 (3) A, a = 88.75 (2), β = 72.84 (1) °, V = 1954.9A ~ 3, D_o = 1.36g / cm ~ 3, D_m = 1.36g / cm ~ 3 and Z = 2.3572 diffraction points were involved in the correction, R = 0.045, R_w = 0.043. The Ag atom coordinates tetrahedrally with the two S atoms of the thioxanthogenate Bu ~ tS-CS_2 and the two P atoms of PPh_3. The CS_3 groups formed by the insertion reaction were basically coplanar. The C-S bond length was significantly longer than the CS_2 bond length, shorter than the C-S bond of the single bond, and the characteristic absorption peak appeared on the infrared spectrum.