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Title: | β-Heptasubstituted Porphyrins: Synthesis, Structural, Spectral, and Electrochemical Properties |
Authors: | Grover, Nitika |
Keywords: | Chemistry Electrochemical Properties Synthesis |
Issue Date: | Jun-2018 |
Publisher: | Wiley |
Abstract: | A new series of β-heptasubstituted porphyrins MTPP(NO2)(Me)6 (M = 2H, CoII, NiII, CuII, and ZnII) was synthesized and characterized by various spectroscopic techniques. The single-crystal X-ray structure analysis of CoTPP(NO2)(Me)6 revealed the significant saddle distortion of the macrocyclic core from the porphyrin mean plane (ΔCβ = 0.928 Å). These porphyrins exhibit significant redshifted electronic spectral features (Δλmax = 40–62 nm) as compared with MTPP due to the combined effect of the nonplanar conformation of the macrocyclic core and mixed β-substituents. H2TPP(NO2)(Me)6 has shown a high dipole moment (7.12 D) as compared with H2TPP (0.052 D) due to cross-polarized push–pull substituents. The redox tunability was achieved by appending the electron-donating methyl and electron-withdrawing NO2 group at the β-positions of the porphyrin skeleton. |
URI: | https://chemistry-europe.onlinelibrary.wiley.com/doi/full/10.1002/ejic.201800410 http://dspace.bits-pilani.ac.in:8080/jspui/xmlui/handle/123456789/15192 |
Appears in Collections: | Department of Chemistry |
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