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本文研究了四苯基卟啉二酸H_4TPP~(2+)在固体和溶液状态下的共振Raman光谱。并结合红外光谱指出H_4TPP~(2+)分子可能存在对称中心。退偏振比测量发现H_4TPP~(2+)有两个反常退偏带。H_4TPP~(2+)分子近似具有D_(14)对称性。
In this paper, the resonance Raman spectra of tetraphenylporphyrin acid H_4TPP ~ (2+) in solid and solution state were studied. Combined with infrared spectroscopy, it is pointed out that the symmetry center of H_4TPP ~ (2+) molecule may exist. Depolarization ratio measurement showed that H_4TPP ~ (2+) has two abnormal depolarization bands. The H_4TPP ~ (2 +) molecule approximation has D_ (14) symmetry.