有机锡化合物[n-Bu2Sn(OH)OS(O)2(p-ClPh)]2的合成、晶体结构和催化性能

Synthesis, Crystal Structure and Catalytic Performance of the Organotin Compound [n-Bu_2Sn(OH)OS(O)_2( p-ClPh)]_2

有机锡化合物具有不同于其他有机金属化合物的结构稳定性、对空气和水的不敏感性，以及在有机合成反应中体现出的良好催化活性，因而广泛应用于酯化反应、羰基缩醛保护和脱保护、开环聚合等领域^[1-5]。另外，与传统的Lewis酸催化剂相比，它不仅不腐蚀设备，而且其催化性能还可通过与中心锡原子相连的配体的类型进行调整^[6]。

An organotin compound, [n-Bu2Sn（OH）OS（O）2（p-ClPh）]2, has been synthesized by the reaction of n-Bu2SnO with p-C1PhSO3H and characterized by IR, elemental analysis and X-ray diffraction single crystal structure analysis. The results show that it possesses a polymeric sheet structure with repeating 20-membered macrocycles by virtue of the bridging bidentate sulfonate groups; the crystal belongs to monoclinic, space group P21/c with a=1.460 72（12） nm, b=0.89741 （11） nm, c=2.89694 （14） nm,β=107.629（4）°, V=3.6192 （6） nm^-3, Z=4; all the tin atoms are six- coordinated in a distorted octahedral geometry. The compound showed the very high catalytic activity in the transesterification of dimethyl carbonate and phenol to diphenyl carbonate.