Articles written in Journal of Chemical Sciences
Volume 102 Issue 3 June 1990 pp 307-318
Spectroscopic studies on monomers and dimers of thiaporphyrins
R P Pandian Damodar Reddy N Chidambaram T K Chandrashekar
Synthesis and spectroscopic properties of porphyrin macrocycles with sulphur as the heteroatom in the porphyrin core have been studied. Electronic absorption spectra of these macrocycles show porphyrin-like behaviour with a strong Soret band and weak
The water-soluble S2TPPS, prepared from sulphonating the para positions of phenyl rings shows extensive aggregation at high concentrations (> 10−4M). At low concentrations (≈ 10−6–10−7M), dimerisation can be induced by the addition of cations (K+, NH4+ ) and cation-crown ether complex. The induced red shifts upon dimerisation parallel findings reported for a variety of cofacial covalently linked porphyrin dimers.
Volume 107 Issue 4 August 1995 pp 487-496
Spectral and electrochemical properties of deformed short-chain basket-handle iron (III) porphyrins
M Ravikanth Damodar Reddy T K Chandrashekar
The spectral and electrochemical properties of series of deformed iron(III) derivatives of short-chain basket-handle porphyrins are reported. 1HNMR and optical studies demonstrated that deformation arises because of the bridging of opposite phenyl groups by short chains. Axial ligation studies indicate that the straps present over both sides of the porphyrin ring do not prevent the entry of small ligands. Electrochemistry in four different solvents suggests the stabilisation of Fe(II) and Fe(I) over Fe(III) in strong coordinating solvents.
Volume 135, 2023
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