FTIR－PAS技术在卟啉类化合物中的应用（Ⅳ）──稀土乙酰丙酮－meso－四－（α－萘基）四苯并卟啉配合物的红外光谱

APPLICATION OF FOURIER TRANSFORM INFRARED PHOTOACOUSTIC SPECTROSCOPY TO PORPHYRINS STUDIES(Ⅳ )──FTIT-PAS of Lanthanide Acetylacetonate-meso-Tetra-(α-naphthyl)tetrabenzoporphyrin Rare Earth Complexes

研究了ｍｅｓｏ－四－（α－萘基）四苯并卟啉及其Ｄｙ，Ｈｏ，Ｅｒ，ＴＭ，Ｙｂ，Ｌｕ乙酸丙酮形成的配合物在３６００～２２０ｃｍ－１范围内的傅里叶变换红外光声光谱（ＦＴＩＲ－ＰＡＳ），对主要谱带进行了经验归属。结果表明，四－（ａ－萘基）四苯并卟啉与稀土乙酰丙酮配合物中稀土金属离子配位削弱了乙酰丙酮环上Ｍ—Ｏ键的伸缩振动，使此谱带向低波数位移。金属敏感港带出现在～１５１３，～１３２３～１０９０，１０５３和～２５０ｃｍ－１。

The Fourier transform infrared photoaooustic spectra of tetra-- (a--naphthyl) tetrabenzoporphyrin and its lanthanide complexes LnTNTBPacac(Ln: Dy, Ho, Er, Tm, Yb,Lu ;TNTBP: meso-tetra- (a-naphthyl )tetrabenzoporphyrin; acac: acetylacetone) in the range of 3600-220cm--1 were measured and investigated. Because of the coordination bonding between the rare earth ion and nitrogen in LnTNTBPacac forms, the bond near 400cm--1, MO stretching vibration on the acetylacetone ring, becomes weaker and is shifted to the lower wavenumber.Metal sensitive bands were found at --1523,--1323,--1090, --1053, --250cm--1.