A5026935612- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Magnetism in coordination complexes
- Metal complexes synthesis and properties
- Lanthanide and Transition Metal Complexes
- Metal-Catalyzed Oxygenation Mechanisms
- Metal-Organic Frameworks: Synthesis and Applications
- Crystal structures of chemical compounds
- Crystallography and molecular interactions
- Inorganic and Organometallic Chemistry
- Nuclear Materials and Properties
- Electron Spin Resonance Studies
- Synthesis and biological activity
- Organic and Molecular Conductors Research
- Petroleum Processing and Analysis
- Radioactive element chemistry and processing
- Vanadium and Halogenation Chemistry
University of Calcutta
2020-2024
Four heterometallic dinuclear Cu<sup>II</sup>Ln<sup>III</sup> (Ln = Tb and Dy) complexes derived from two different N<sub>2</sub>O<sub>3</sub> donor unsymmetrical Schiff base ligands exhibit SMM behaviour.
Herein, we present a dark-green crystalline tetranuclear Cu(II) Schiff base complex {C1 = [Cu
Catalytic efficiency of heterometallic Cu(<sc>ii</sc>)–Mn(<sc>ii</sc>) complexes towards oxidation 3,5-DTBC to 3,5-DTBQ is dependent on the basicity and steric requirement anionic co-ligands.
The reaction of the mononuclear Ni(II) building block [NiL] an asymmetrically dicondensed N2O3 donor Schiff base ligand, N-salicylidene-N′-3-methoxysalicylidene-1,3-propanediamine (H2L), with LnCl3·6H2O (Ln = Gd, Tb, Dy) in a 2:1 molar ratio leads to formation three hexanuclear carbonato-bridged Ni4Ln2 complexes formulated as [Ni4Ln2(CO3)2Cl2(L)2(L′)2(CH3CN)2]·4CH3CN·2H2O Tb (2), Dy (3)), where H2L′ N,N′-bis(salicylidene)-1,3-propanediamine. In complex 1, unsymmetrical nature remains intact;...
A new series of high-spin [CoII2] complexes [Co2(cpdp)(μ-O2CC6H5)] (1), [Co2(cpdp)(μ-o-O2CC6H4(OH))]·H2O (2), and [Co2(cpdp)(μ-p-O2CC6H4(OH))]·5H2O (3) the carboxylate-affixed multidentate ligand, N,N′-bis[2-carboxybenzomethyl]-N,N′-bis[2-pyridylmethyl]-1,3-diaminopropan-2-ol (H3cpdp), have been synthesized structurally characterized [C6H5CO2– = benzoate; o-C6H4(OH)CO2– ortho-hydroxybenzoate; p-C6H4(OH)CO2– para-hydroxybenzoate]. In methanol, 1, 2, 3 by carrying out reaction H3cpdp with...
Four new heterometallic Cu(II)-U(VI) species, [{(CuL1)(CH3CN)}UO2(NO3)2] (1), [{(CuL2)(CH3CN)}UO2(NO3)2] (2), [{(CuL3)(H2O)}UO2(NO3)2] (3), and [UO2(NO3)2(H2O)2]·2[CuL4]·H2O (4), were synthesized using four different metalloligands ([CuL1], [CuL2], [CuL3], [CuL4], respectively) derived from unsymmetrically dicondensed N,O-donor Schiff bases. Single-crystal structural analyses revealed that complexes 1, 2, 3 have a discrete dinuclear [Cu-UO2] core in which one metalloligand, [CuL], is...
Three field induced SMMs built from quasi-isotropic cations like CuII and MnII have been characterized, showing that relatively large clusters with quasi-negligible D different ground spin states, S = 3/2, 2 or 4, can also exhibit field-induced slow relaxation of magnetization.
A Ferromagnetically coupled tetranuclear, an antiferromagnetically hexanuclear and a mononuclear Ni(II) complex of new unsymmetrical Schiff base ligands derived from 1,3-diamino-2-propanol have been obtained with slight change in the carbonyl compounds.
The reactivity of biological or synthetic metalloenzymes is modulated in the presence redox innocent Lewis acidic metal ions as they change potential active present site metalloenzymes. To study this effect, we synthesised a mono-nuclear V(IV) complex (VOL, 1) with an N2O4 donor bicompartmental ligand, characterized it by single-crystal X-ray crystallography and recorded its cyclic voltammogram acetonitrile. CV revealed reversible process for V(IV)/V(V) couple. couple shifted to more...
Among three rare types of Cu II –Ln III (Ln = Gd, Tb, and Dy) complexes an unsymmetrical N 2 O 3 donor ligand, only the Tb derivative shows SMM behavior under a dc field. Theoretical calculations explain magnetic complexes.
One NiII2MnII3 and two CuII2MnII3 complexes have been synthesized using N 2 O donor ligands. The former complex exhibits spin crossover at K temperature. All the exhibit catecholase-like activities.
The effect of non-covalent interactions on the coordination geometry Ni( ii ) in a )–Zn( and )–Hg( complexes has been studied using DFT calculations.
Abstract A novel discrete dodecanuclear Cu(II) complex, [Cu 12 L 2 6 (OH) ]⋅2CH 3 CN ( 1 ) has been synthesised using an N O donor unsymmetrical Schiff base ligand derived from the condensation of 1,3‐diamino‐2‐propanol with salicylaldehyde and o ‐hydroxyacetophenone. Single crystal X‐ray diffraction study indicates that each deprotonated chelates two centres which are also bridged by alkoxo oxygen; six such dinuclear units joined phenoxo groups as well hydroxo bridges to form structure....
With the objective of gaining insight into modulation reduction potential Ni(II/I) couple, we have synthesized two mononuclear nickel(II) complexes, NiL