摘要
研究了乙酰丙酮－ｍｅｓｏ－四－（对－甲氧基）苯基卟啉及其Ｓｍ、Ｇｄ、Ｔｂ、Ｄｙ、Ｈｏ、Ｅｒ、Ｔｍ、Ｙｂ、Ｌｕ配合物在３６００～２２５ｃｍ－１范围的付立叶变换红外光声光谱，对主要谱带进行了经验归属。结果表明，由于四－（对－甲氧基）苯基卟啉与稀土金属离子配位，削弱了乙酰丙酮环上的Ｍ－Ｏ键的伸缩振动，使此谱带向低波数移动。配合物中ＰＮ－Ｈ伸缩振动谱带消失，出现Ｍ－Ｎ伸缩振动与卟啉环变形振动等的复合振动。
The Fourier transform infrared photoacoustic spectra of tetra-(para-methoxyphenyl)porphyrin and its coordination compounds LnT(ρ-CH3O)PPacac(Ln : Sm , Gd, Tb, Dy, Ho,Er, Tm, Yb, Lu)in the range of 3600～225 cm(-1) were measured and investigated. Because of the coordination bonding between the rare earth ion and nitrogen in T(ρ-CH3O)PPacac forms,the band near 400 cm(-1),M-Ostretching vibration on the acetylacetonate ring,becomes weaker,this band is shifted to the lower wavenumber. The bands at 3318.0 and 968.4 cm-1, PN─H stretching vihration, disppears upon complex formation, the vibration coupling between the M-N stretching and the ring deformation appears.
出处
《高等学校化学学报》
CSCD
北大核心
1994年第2期257-260,共4页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
关键词
红外光声光谱
对甲氧基苯基
卟啉
Infrared photoacoustic spectrum
Rare earth ion
p-Methoxyphenyl porphyrin
