Raman spectroscopic characteristics of octa-substituted bis(phthalocyaninato) rare earth complexes peripherally substituted with (4-methoxy)phenoxy derivatives |
| |
Authors: | Fanli Lu Wendong WangGuihong Bao Jianzhong Cui |
| |
Institution: | Department of Chemistry, School of Sciences, Tianjin University, Tianjin 300072, PR China |
| |
Abstract: | The Raman spectroscopic data in the range 500-1800 cm−1 for a series of 15 rare earth double-deckers with tervalent rare earths MIIIPc(MeOPhO)8]2 (M = Y, La, …, Lu, except Ce, Pr and Pm), reduced state HPrPc(MeOPhO)8]2 and intermediate-valent cerium CePc(MeOPhO)8]2 have been collected using laser excitation source emitting at 632.8 nm. With excitation at 632.8 nm, which is in close resonance with the main Q absorption band of the phthalocyanine ligand, typical Raman marker bands of the monoanion radical Pc(MeOPhO)8] − were observed at 1500-1528 cm−1 as very strong bands resulting from the coupling of pyrrole C C and aza C N stretchings. For CePc(MeOPhO)8]2 and HPrPc(MeOPhO)8]2, a very strong band at 1499 cm−1 with contributions from both pyrrole C C and aza C N stretchings and also isoindole stretching was the marker Raman band of Pc(MeOPhO)8]2−. In addition, the influence of ionic radius of the rare earth metal and substituent species on the Raman scatting characteristics of sandwich-type compounds has also been tentatively studied. |
| |
Keywords: | Phthalocyanine Raman spectra Rare earth Sandwich-type complexes |
本文献已被 ScienceDirect 等数据库收录! |
|