三价稀土(钇、铒)与四苯基卟啉和四对氯苯基卟啉配合物的合成及性质研究

三价稀土(钇、铒)与四苯基卟啉和四对氯苯基卟啉配合物的合成及性质研究 STUDIES ON COMPLEXES OF TRIVALENCE RARE EARTH （Y AND Er） WITH TETRAPHENYLPORPHIN AND ITS p-CHLORO DERIVATIVE 王静秋 Wang Jingqiu first-author 张国寅 Zhang Kouyin 秦子斌 Qin Zibin 报导了乙酰基丙酮（acac）、四苯基吓啉（TPP）和四对氯苯基吓啉（p-Cl TPP）合钇（Ⅲ）、铒（Ⅲ）配合物的合成,并对它们的组成、紫外可见光谱、红外光谱和 1 H核磁共振谱、差热以及热重分析等性质进行了研究。所得到的四种稀土（Ⅲ）吓啉配合物的化学计量配比为TPP（p-C1 TPP）:Y 3+ (Er 3+ ):acac等于1∶1∶1.其紫外可见光谱出现自由吓啉配体的对称性（D 3 h）变为C 4v 对称类型的吸收谱带.在红外光谱中,吓啉环腔内的N—H伸缩振动和弯曲振动吸收谱带完全消失,而配体的=C—N伸缩振动频率向低频移动,其强度也明显减弱。此外,本文还讨论了配合物在 1 H NMR波谱中δH向高磁场或低磁场化学位移的原因以及配合物和配体热稳定性的比较。 It has been described that synthesis and characterization of trivalence rare earth （Y and Er） acetylacetonate（acac） with tetraphenylporphin （TPP） and its p-chloro derivative （p-ClTPP）. They have been identified by elemental analyses, electron, infrared and 1 H NMR spectra, DTA and TG. The results indicated: The stoichiometries of these complexes are 1: 1: 1（Y 3 or Er 3 : TPP or p-C1TPP: acac）. Their electron spectra suggest that the coordinated porphyrin nucleus approximates to C 4v symmetry. In the IR spectra of the complexes, the bands of the asymmetric stretching and bending vibration of two N-H of the free porphyrin cavity are disappeared, the bands of=C—N—are shifted to lower frequency by about 20cm -1 and reduced to weak. The exceptionally low magnetic field peaks（δ=8.94 and 11.00ppm） of the δH of the Er（acac）TPP complex are discussed in the 1 H NMR spectra. 稀土（Y、Er） 卟啉 配合物 rare earth porphyrin complex 中国科学院科学基金 1987-03-01 2021-04-01 3