Suman Kr Dey- BSc, MSc, PhD
- Assistant Proffesor at Vidyasagar University
Suman Kr Dey
- BSc, MSc, PhD
- Assistant Proffesor at Vidyasagar University
Assistant Professor,
CDOE, Vidyasagar University
India
About
25
Publications
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Introduction
My current research interest includes water oxidation using single site Ru-complexes.
Current institution
Additional affiliations
March 2018 - March 2020
January 2016 - July 2017
April 2015 - December 2015
Publications
Publications (25)
The unexpected synthesis of biologically important quinazolinone scaffold directly from 2,2'-iminodibenzoic acid is reported. The product was characterized by NMR, single crystal X-ray diffraction and other analytical methods. The obtained single crystal X-ray data of the product conclusively prove the formation of the quinazolinone moiety. The rea...
The problem of mosquito nuisance has long been a challenge for many communities throughout the world and the loads of diseases caused by them are recently on rise. Commonly known diseases caused by mosquitoes are malaria, dengue, chicken gunya, filariasis, yellow fever and Zika virus. The innovation of herbal mosquito repellent candles offers an ef...
Cerium(IV)-driven water oxidation catalysis mediated by a mononuclear ruthenium(III) complex, [Ru(L)(pic)3] (H3L = 2,2'-iminodibenzoic acid, pic = 4-methylpyridine), has been demonstrated in this work. The mechanistic details of water oxidation have been investigated by the combined use of spectroscopy, electrochemistry, kinetic analysis, and compu...
Two fluorescent cyclic phosphoramides, 1,3-dihydronaphtho[1,8-cd][1,2,6]phosphdiazine-2-oxide-(2-bis(2-chloroethyl)amide) (1) and 2,3-dihydro-2-oxo-1H-anthra[1,2-d][1,3,2]diazaphosphole-6,11-dione-2[N,N-bis(2-chloroethyl)]amide (2) were synthesized and characterized using standard analytical techniques. The single crystal X-ray diffraction studies...
We have synthesized several new manganocene-adduct ([Cp2Mn(L)] = 1–L) complexes using pyridine and polypyridine ligands and report their molecular structures and characterization data. Consistent with other molecules in this class [(ηx-Cp)2MnLn] or [(ηx-Cp)2Mn(L–L)] (n = 1, 2; x = 1, 3, or 5), the manganese-cyclopentadienide interaction deviates fr...
Certain organometallic chromophores with water-derived ligands, such as the known [Mn(CO)3(μ3-OH)]4 (1) tetramer, drew our attention as possible platforms to study water-splitting reactions. Herein, we investigate the UV irradiation of various tricarbonyl organomanganese complexes, including 1, and demonstrate that dihydrogen, CO, and hydrogen pero...
The formation of metal-oxygen clusters is an important chemical transformation in biology and catalysis. For example, the biosynthesis of the oxygen-evolving complex in the enzyme photosystem II is a complicated stepwise process that assembles a catalytically active cluster. Herein we describe the role that carbonato ligands have in the formation o...
Enzymatic reactions have inspired many chemists to design small molecule mimics that would perform the function of the enzymes in aqueous and or non-aqueous medium. Catechol oxidase (CO) and phenoxazinone synthase (PHS) are two multi-copper enzymes in nature, which has led to model complexes of Mn, Fe, Co, Ni, Cu. Based on our earlier work in this...
Open-shell phenalenyl chemistry started more than half a century back, and the first solid-state phenalenyl radical was realized only 15 years ago highlighting the synthetic challenges associated in stabilizing carbon-based radical chemistry, though it has great promise as building blocks for molecular electronics and multifunctional materials. Alt...
A slow hydrolyzing imidazole based RuII-arene complex [(L)RuII(η6-p-cym)(Cl)](PF6) (1) with excellent stability in extracellular chloride concentration shows better activity in hypoxia and strong resistance to glutathione (GSH) in vitro under hypoxic conditions. 1 arrests the cell cycle in sub G1 and G2/M phase and leads to apoptosis.
We have found that change of solvent in solvothermal synthetic method may be a useful tool to generate complexes of various nuclearities keeping the reactants, synthetic conditions and stoichiometry same. Although the process involves serendipity but the potential of producing change in nuclearity of discrete molecular complexes by mere change of s...
Three dinuclear CoIII/II complexes [(CoIII
2(H2L)2(OAc)2)]�CH3OH (1), [CoIICoIII(H2L)2(OAc)]�2CH3OH�H2O (2), and
[CoIICoIII(H2L)2(CH3CN)(H2O)]Cl�CH3CN�4H2O (3) [H4L is (3,5-di-tert-butyl-2-hydroxybenzylideneamino)-2-
(hydroxymethyl)propane-1,3-diol] were synthesized and characterized using single crystal X-ray diffraction and
other analytical metho...
Manganese (III) acetate is found to be an efficient catalyst to perform oxidation of 3,5-di-tert-butylcatechol (DTBC) to 3,5-di-tert-butylbenzoquinone (DTBQ) and 2-aminophenol (OAP) to 2-aminophenoxazinone (APX). The kcat values are 1.72(2) × 103 and 2.8(2) × 102 h−1 for the formation of DTBQ and APX respectively. The turnover number of APX formati...
A hydroquinone based palladium complex [Pd(H2L)(Cl)2] (1), acts as an
efficient room temperature catalyst for reduction of nitroarenes in
water as solvent. 1 also acts as a tandem catalyst for Suzuki–Miyaura
cross coupling in ethanol followed by reduction of nitroarenes in one
pot with a loading of 0.25 mol% catalyst.
Stand aside, potatoes! A mononuclear
manganese(III) complex [MnIII(L)2(OAc)-
(AcOH)] (1) exhibits catechol oxidation
in the presence of molecular oxygen by
generation of a hydroxyl radical with
a turnover number of the same order as
that of catechol oxidase from sweet
potatoes.
We present here the synthesis of a pyridine containing oxazolidinone, 3-(pyridin-2-ylmethyl)oxazolidin-2-one (L) through fixation of atmospheric CO2 and without any added base. L has been used to generate three metal complexes [Cu(L)2(ClO4)2] (1), trans-[Pt(L)(DMSO)Cl2] (2), trans-[Pd(L)2Cl2] (3). Complexes 1-3 have been structurally characterized...
Three Cu(II) complexes of bis-pyrazole based ligands have been synthesized and structurally characterized by X-ray crystallography. One of the ligand () contains a methionine ester conjugated to a bis-pyrazole carboxylate through an amide linkage. The binding constant for complexes with CT DNA are of the order of 10(4) M(-1). The crystal structure...
Two mixed-valent tetranuclear MnII/III complexes of formula [Mn4(L)4(OAc)2(OMe)4]·2H2O (1) and [Mn4(L)4(OAc)2(OMe)4] (2), in which HL = 9-hydroxyphenalenone, were synthesized by a solvothermal method and magnetostructurally characterized. Complex 1 crystallizes in the monoclinic space group P21/c with a = 12.69 Å, b = 15.51 Å, c = 15.40 Å, β = 114....
