Synthesis and Characterization of Two Tritylthio-Derivatives: 1-Bromo-3-Tritylthiopropane and 2-(Tritylthio)-Ethanethiol
作者:Rodney A. Tigaa、Ana de Bettencourt-Dias
DOI:10.1007/s10870-017-0703-1
日期:2017.12
Two tritylthio-based compounds were synthesized: 1-bromo-3-tritylthiopropane 1 and 2-(tritylthio)-ethanethiol 2. They were characterized by infrared, NMR, UV–Vis absorption and fluorescence spectroscopy and single-crystal X-ray diffraction. The crystals of both compounds crystallize in the monoclinic space group P21/c. The unit cell dimensions of 1 are a = 7.4072 (9) Å, b = 9.6924 (11) Å, c = 25.652(3) Å, β = 90.023 (2)o, and V = 1841.7 (4) Å3, and of 2 are a = 15.3532 (8) Å, b = 14.1552 (7), c = 7.8249 (4) Å, β = 94.5239 (8)o, and V = 1695.27 (15) Å3. The packing structures of 1 and 2 are supported by weak π−π and hydrogen bond interactions. Both 1 and 2 have absorption maxima at 257 nm, and emission maxima at 314 nm and 313 nm, respectively. The compounds differ by the presence of the S-H stretching vibration at ~ 2550 cm− 1 in 2 and its absence in 1, as observed in the infrared spectra. Thermal ellipsoid plots of compounds 1 and 2, with thermal ellipsoids at 50% probability.
合成了两种基于三苯甲硫基的化合物:1-溴-3-三苯甲硫基丙烷 1 和 2-(三苯甲硫基)乙硫醇 2。它们通过红外、核磁共振、紫外-可见吸收和荧光光谱以及单晶 X 射线衍射进行表征。这两种化合物的晶体均属于单斜晶系 P21/c 空间群。化合物 1 的晶胞参数为 a = 7.4072 (9) Å,b = 9.6924 (11) Å,c = 25.652(3) Å,β = 90.023 (2)°,V = 1841.7 (4) ų;化合物 2 的晶胞参数为 a = 15.3532 (8) Å,b = 14.1552 (7) Å,c = 7.8249 (4) Å,β = 94.5239 (8)°,V = 1695.27 (15) ų。化合物 1 和 2 的堆积结构受到弱 π−π 和氢键相互作用的支持。两种化合物在 257 nm 处均有最大吸收,分别在 314 nm 和 313 nm 处有最大发射。根据红外光谱观察,化合物 2 在 ~2550 cm−1 处存在 S-H 伸缩振动,而化合物 1 中则不存在。化合物 1 和 2 的热椭球图,热椭球概率为 50%。