Dillip Kumar Chand
Articles written in Journal of Chemical Sciences
Volume 123 Issue 2 March 2011 pp 187-199
Synthesis, structure and applications of [
Rajan Deepan Chakravarthy Dillip Kumar Chand
Oxo-molybdenum chemistry is of great interest since such units are found in the active sites of a majority of molybdo-enzymes. In order to mimic the biological systems, a number of oxo-molybdenum complexes have been synthesised and studied. This review describes synthesis, structure and applications of oxomolybdenum complexes particularly
Volume 123 Issue 6 November 2011 pp 875-881
Jeyaraman Athilakshmi Dillip Kumar Chand
Palladium nanoparticles (PdNPs) of uniform size in the range of 3-5 nm are prepared in MeOH and MeCN:MeOH by solvent-assisted reduction of palladium acetate in the presence of a hexaazamacrocyclic ligand,
Volume 126 Issue 5 September 2014 pp 1493-1499 Special issue on Chemical Crystallography
Self-assembly of self-assembled molecular triangles
Mili C Naranthatta V Ramkumar Dillip Kumar Chand
A rare variety of self-assembledmolecular triangle [Pd3(bpy)3(imidazolate)3](NO3)3,
Volume 127 Issue 2 February 2015 pp 273-280
Role of peripheral phenanthroline groups in the self-assembly of self-assembled molecular triangles
Mili C Naranthatta V Ramkumar Dillip Kumar Chand
Self-assembled molecular triangles [Pd3(phen)3(imidazolate)3](NO3)3,
Volume 130 Issue 7 July 2018 Article ID 0096
Linear and circular helicates: A brief review
ARUNA PRIYADARSINI PANEERSELVAM SRABANI SROTOSWINI MISHRA DILLIP KUMAR CHAND
Helical self-assembled coordination complexes are broadly classified under linear and circular helicates. While the number of strands of the ligand units in a molecule of the linear helicates is used for further classifications such as single-stranded, double-stranded and so on, the circular helicates are not classified further. The compositions of helicates are considered as MxLy where the terms x and y stand for the number of metal ion(s) and ligand strands, respectively. However, more than one type of metal centers/ligand in helicates are also known. The linear helicates of a given number of strands are further classified under the number of metal centers such as binuclear, trinuclear and so on. Representative examples are included to exemplify the varieties of helicates.
Volume 132 All articles Published: 4 July 2020 Article ID 0083
RANDHIR RAI DILLIP KUMAR CHAND
A procedure for the expedient synthesis of well-characterized Cu(I) oxide nanoparticles (Cu2-ONPs) from Cu(II) salts by employing Rice (
Volume 133 All articles Published: 13 August 2021 Article ID 0087
Copper nanoparticles (CuNPs) catalyzed chemoselective reduction of nitroarenes in aqueous medium
RANDHIR RAI DILLIP KUMAR CHAND
A procedure for practical synthesis of CuNPs from CuSO4.5H2O is established, under appropriatereaction conditions, using rice (
CuNPs are synthesized using hydrolysed rice and used as catalyst for chemoselective reduction of nitroarenes to their corresponding amines in water.
Volume 134 All articles Published: 16 April 2022 Article ID 0054
DAYA V P RAJAMONY JAGAN DILLIP KUMAR CHAND
Three new cobalt(II) complexes [Co(μ2-L)]3(ClO4)3.2H2O, 1, [Co(L)(NO3)], 2 and {[Co(μ2-L)(MeOH)](BPh4).(MeOH)}n, 3 are prepared where L stands for 2-(bis(pyridin-2-ylmethyl)amino)acetate. Single crystal X-ray diffraction analysis confirmed the trinuclear core for 1, and 1-D polymericstructure for 3. It is proposed that these complexes are largely mononuclear in solution state. Reactivity of thecomplexes with aerial dioxygen, in presence of Et3N, invariably produced a common complexed cation[Co(L)(pic)]+ where pic stands for picolinate. The novelty of the finding is in terms of the presence of bothintact ligand (i.e L) and a fragment of the ligand (i.e. pic) in the same complex. Crystal structures of theisolated complexes [Co(L)(pic)](ClO4), 4a and [Co(L)(pic)](NO3), 4b confirmed the solid state structures.The Co(II) center of a complex is oxidized to Co(III) and the bound ligand moiety afforded a picolinate unit(due to oxidative Cpicolyl-Namine bond cleavage). The picolinate unit then connects with another molecule of aCo(III) complex containing L in its original form. Oxidation of a representative complex using H2O2 alsoresulted [Co(L)(pic)]+, but a stable binuclear dihydroxo bridged Co(III) complex [Co(L)(μ2-OH)]2(ClO4)2, 5was formed when controlled amount of H2O2 (1 equiv) was employed.
Synopsis: Three new Co(II) complexes of 2-(bis(pyridin-2-ylmethyl)amino)acetate (L) are prepared. Reactivity of the complexes with aerial dioxygen, in presence of Et3N, invariably produced Co(III) complexes having the common complexed cation [Co(L)(picolinate)]+. Picolinate is generated due to the oxidative cleavage of bound L.
Volume 135, 2023
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