Ullmann reaction of iodobiphenyl and diiodobiphenyl. Infrared studies indicated that the fine structure in the 780–810 cm−1 region suggests the presence of consecutive m-phenylene units, and that the positions of the strong or medium bands in the 820–840 cm−1 region indicate approximately the number of continuous p-phenylene units. The electronic spectra commonly displayed a prominent E-band in the narrow
                                    通过
碘联苯和二
碘联苯的乌尔曼反应合成了七种线性六
联苯。红外研究表明,780-810 cm-1 区域的精细结构表明存在连续的间亚苯基单元,820-840 cm-1 区域中强或中带的位置表明大约有连续对亚苯基单元。电子光谱通常在 192-207 nm 的狭窄区域显示出突出的 E 带。260 nm 以上的强 K 带被认为表明存在一个或多个对亚苯基单元。