Infrared spectroscopic studies of free-base tetraphenylporphine and its dication

被引：28

作者：

Saini, GSS ^{[1
]}

Sharma, S ^{[1
]}

Kaur, S ^{[1
]}

Tripathi, SK ^{[1
]}

Mahajan, CG ^{[1
]}

机构：

[1] Panjab Univ, Dept Phys, Chandigarh 160014, India

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2005年 / 61卷 / 13-14期

关键词：

infrared absorption; free-base tetraphenylporphine; free-base tetraphenylporphine diacid; free-base tetraphenylporphine dication;

D O I：

10.1016/j.saa.2004.11.032

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

We present here the infrared absorption spectra of free-base tetraphenylporphine and its dication. Most of the allowed IR bands of porphyrin skeletal are observed in pairs due to two-fold symmetry of the free-base tetraphenylporphine. Observation of some new bands, disappearance of few bands in the IR spectrum of dication are interpreted on the basis of point group symmetry S-4. Intensity change in the observed bands due to vibrational motion of the phenyl rings for dication is also explained on the basis of symmetry of dication. Sharing of electrons of the B, orbitals by the two added protons are responsible for the shifts in the position of certain IR bands for dication. (c) 2004 Elsevier B.V. All rights reserved.

引用

页码：3070 / 3076

页数：7

共 28 条

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