Ts. Shi et al., APPLICATION OF FOURIER-TRANSFORM INFRARED PHOTOACOUSTIC-SPECTROSCOPY TO PORPHYRINS STUDIES .3. FTIR-PAS OF LANTHANIDE ACETYLACETONATE-MESO-TETRA-(PARA-CHLOROPHENYL) PORPHYRIN RARE-EARTH COMPLEXES, Gaodeng xuexiao huaxue xuebao, 16(1), 1995, pp. 94-97
The fourrier transform infrared photoacoustic spectra of tetra-(para-c
hlorophenyl) porphyrin and its coordination compounds LnT(p-Cl)PPacac
(Ln: Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Lu) in the range of 3600-220 cm(-
1) were measured and investigated. Because of the coordination bonding
between the rare earth ion and nitrogen in LnT (p-Cl)PPacac forms, th
e band near 400 cm(-1) and M-O stretching vibration on the acetylaceto
nate ring become weaker, and shifted to the lower wavenumber. Metal se
nsitive bands were found at about 1558, 1474, 1427, 1219, 798, 733 and
250 cm(-1).