Synthesis and Characterization of Luminescent Zinc(II) and Cadmium(II) Complexes with N,S-Chelating Schiff Base Ligands
作者:Tatsuya Kawamoto、Masato Nishiwaki、Yasutaka Tsunekawa、Koichi Nozaki、Takumi Konno
DOI:10.1021/ic7020758
日期:2008.4.1
Group 3 complexes exhibited a strong emission on irradiating with ultraviolet light while the Group 1 complexes were not emissive at room temperature. However, all the zinc(II) complexes were luminescent in CH 2Cl 2/toluene glass at 77 K, and their emission peak energies were found to correlate with the Hammett constant of the substituent at para position of a pendent phenyl ring in each complex. Similar
乙酸锌(II)与各种2-取代的苯并噻唑啉的反应提供了具有N 2S 2供体组[Zn(RPhC(H)NC 6H 4 S)2]的四面体单核配合物。根据吸收光谱的特征,所获得的锌(II)配合物可以分为三类;第二类为锌配合物。组2(R = 2,4,6-triMe(1),2,6-diCl(2))在组2(R = 4 -Cl(3),H(4),4-Et(5),4-OMe(6))和3组(R = 4-NMe 2(7),4-NEt 2(8))在250-300 nm处显示一个强带,在350-450 nm处显示两个非常强的带。第2族和第3族配合物在紫外线照射下表现出强发射,而第1族配合物在室温下不发光。然而,所有的锌(II)配合物在CH 2Cl 2 /甲苯玻璃中以77 K发光,并且发现它们的发射峰能量与每个配合物中悬垂苯环对位的取代基的Hammett常数相关。还进行了乙酸镉(II)与2-取代的苯并噻唑啉的类似反应,以