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Sankar Prasad Rath
Indian Institute of Technology Kanpur
114Publications
25H-index
1,810Citations
Publications 114
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#1Bapan Saha (IITK: Indian Institute of Technology Kanpur)H-Index: 3
#2Ana G. Petrovic (Columbia University)H-Index: 13
Last.Sankar Prasad Rath (IITK: Indian Institute of Technology Kanpur)H-Index: 25
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Abstract In the present work, we have utilized ferrocene-bridged diiron(III) porphyrin dimer and investigate the rotary motions mediated by axial ligands exploiting conformational flexibility of the ferrocene linker. Diiron(III) porphyrin dimer can switch easily between the syn and anti rotamers reversibly based on the axial coordination and thereby forming complexes with different structure and properties for the development of synthetic molecular machines. While the five-coordinate diiron(III)...
#1Dipankar Sahoo (IITK: Indian Institute of Technology Kanpur)H-Index: 9
#2Satabdi Roy (IITK: Indian Institute of Technology Kanpur)H-Index: 4
Last.Sankar Prasad Rath (IITK: Indian Institute of Technology Kanpur)H-Index: 25
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Abstract Hemoproteins serve many diverse biological functions through the nearly identical heme prosthetic group. The elucidation of the electronic structures of synthetic hemes is quite important in understanding the function and catalytic processes of naturally occurring heme proteins. For example, an important step in cytochrome P450 catalysis has been the spin-state crossover upon substrate binding which thereby facilitates the reduction of the iron centre. Iron(III) porphyrins having interm...
#1Anjani Kumar Pandey (IITK: Indian Institute of Technology Kanpur)H-Index: 2
#2Mohammad Usman (IITK: Indian Institute of Technology Kanpur)H-Index: 1
Last.Sankar Prasad Rath (IITK: Indian Institute of Technology Kanpur)H-Index: 25
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Two geometrical isomers of a nickel(II) dication diradical porphyrin dimer have been isolated selectively in pure forms by step-wise addition of the oxidant in the same reaction pot. Both isomers, stabilized exclusively by anion–π interactions, have unique and very distinct electronic and spectroscopic features and display an anion-induced charge/electron transfer phenomenon. Our work highlights the crucial role played by counter ions in controlling and stabilizing a variety of electronic struct...
#1Amit Kumar (IITK: Indian Institute of Technology Kanpur)H-Index: 20
#2Sayantani Banerjee (IITK: Indian Institute of Technology Kanpur)H-Index: 1
Last.Sankar Prasad Rath (IITK: Indian Institute of Technology Kanpur)H-Index: 25
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We have reported here the synthesis, structure and spectroscopic properties of the NiII–FeIII heterobimetallic ethene-bridged porphyrin dimer and investigate the effect upon step-wise one- and two-electron oxidations to produce a mixed-valence π–cation radical dimer and a dication diradical complex, respectively. We then investigate their electronic structure and spin coupling model and compare them with the corresponding homobimetallic analog. Detailed UV-vis-NIR, IR, and variable temperature m...
#1Firoz Shah Tuglak Khan (IITK: Indian Institute of Technology Kanpur)H-Index: 7
#2Amit Kumar (IITK: Indian Institute of Technology Kanpur)H-Index: 20
Last.Sankar Prasad Rath (IITK: Indian Institute of Technology Kanpur)H-Index: 25
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Abstract Multiheme cytochromes c are among the most fascinating molecular machineries evolved by Nature with essential functions in electron transfer and enzymatic catalysis. The multiheme architecture ensures fast intramolecular electron transfer over long distances. We explore here the structure-function relationship of the diheme cytochrome c (DHC2), the simplest member of such family, using a series of synthetic diheme analogs with a variety of imidazoles and pyridines as axial ligands which...
#1Firoz Shah Tuglak Khan (IITK: Indian Institute of Technology Kanpur)H-Index: 7
#2Syed Jehanger Shah (IITK: Indian Institute of Technology Kanpur)H-Index: 1
Last.Sankar Prasad Rath (IITK: Indian Institute of Technology Kanpur)H-Index: 25
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A complete reversal of the spin state of iron(III) is observed upon a small change to the diporphyrin bridge from ethane to ethene by keeping all other factors intact. Combined analysis using single crystal X-ray structure determination, Mossbauer, variable-temperature magnetic, 1H NMR and EPR studies has confirmed the spin states of iron(III) complexes both in solid and solution phases.
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