Influence of the side-group at C=N bridging bond of bis-aryl Schiff bases on the wavelength of absorption maximum of ultraviolet absorption spectra
作者:Qingqing Luo、Chao-Tun Cao、Zhongzhong Cao、Chenzhong Cao
DOI:10.1002/poc.3550
日期:2016.8
methyl CH3 at carbon end and the CH=N(O) has a side‐group O atom at nitrogen end. In this work, a series of XPEAY and XPNY were synthesized, and their longest wavelength maximum λmax (nm) of ultraviolet absorption spectra were measured. Then the change regularity of the νmax (cm‐1, νmax=1/λmax) of XPEAY and XPNY were investigated, and they were compared with that of XBAY (reported by ref.26). The results
化合物N-(亚苄基)苯胺XArCH = NArY(XBAY),N-(苯基-亚乙基)苯胺XArC(CH 3)= NArY(XPEAY)和N-苯基-α-苯基硝酮XArCH = N(O)ArY (XPNY)具有桥接基团CH = N,C(CH 3)= N和CH = N(O),其中C(CH 3)= N在碳端具有侧基甲基CH 3 = N(O)在氮端带有一个侧基O原子。在这项工作中,合成了一系列XPEAY和XPNY,并测量了它们的紫外线吸收光谱的最长波长最大值λmax(nm)。然后,ν的变化规律最大值(厘米-1,ν最大= 1 /λ最大对XPEAY和XPNY进行了调查),并与XBAY进行了比较(参考文献26报告)。结果表明:(1)XBAY与XPEAY或XPNY之间的νmax之间没有良好的线性关系。(2)在相同的一组的X-Y基团的耦合情况下,λ的分布最大XPEAYs的比XPNYs大。(3)侧基CH 3使得效