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• W4309592375 abstract "Antipodal β-diformyl porphyrin (H 2 TPP(CHO) 2 ) and its metal complexes (MTPP(CHO) 2 , M = [Formula: see text], [Formula: see text], [Formula: see text], and [Formula: see text] are synthesized and characterized by various spectroscopic techniques. Diformyl porphyrins possess two electron-withdrawing formyl substituents at their β-pyrrole positions making them electron-deficient macrocycles. UV-Vis absorption spectra of MTPP(CHO) 2 are red-shifted as compared to β-monoformyl/hydroxymethyl porphyrins and a further large anodic shift ([Formula: see text][Formula: see text] = 0.15 - 0.52 V) was observed in their redox potentials. Hammett plots of MTPP(X)(Y) (X = CHO, CH 2 OH; Y = H, CHO) showed that the HOMO-LUMO energy gap decreases with the increment in the Hammett parameter ([Formula: see text] of the substituents. DFT studies are performed for different positional isomeric diformyl porphyrins which reveal that the position of β-formyl groups affects the geometry of the porphyrin core while the symmetrical nature of 2,13-diformyl porphyrin and longer distance between two formyl groups bring quasiplanar conformation of the diformyl porphyrin macrocycle." @default.
• W4309592375 created "2022-11-28" @default.
• W4309592375 creator A5018074631 @default.
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• W4309592375 date "2022-12-01" @default.
• W4309592375 modified "2023-09-26" @default.
• W4309592375 title "β-Diformyl porphyrins: Synthesis, structural, spectral and electrochemical properties" @default.
• W4309592375 cites W1978971336 @default.
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• W4309592375 doi "https://doi.org/10.1142/s1088424622500729" @default.
• W4309592375 hasPublicationYear "2022" @default.
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