Department of Chemistry
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Item Synthesis and Single-Crystal Structure of an Unusual Heptacoordinate Cadmium(II) Complex, [Cd(medien)(NO3)2] (medien = bis(2-aminoethyl)methylamine).(ACTA, 1998) Laskar, Inamur RahamanMolecular geometry and coordination number play the key role in exploring the chemistry of a coordination compound.Item Synthesis, Characterization and Thermal Studies of Bis(2-aminoethyl)methylamine(medien) Complexes of Cadmium(II). Single Crystal Structure of Cd(medien)I2.(ACTA, 1998) Laskar, Inamur RahamanThe synthesis and characterization of bis complexes of bis(2-aminoethyl) amine (dien) with transition and non transition metals are of interest as these complexes can potentially exist in three isomeric formsItem First structural characterisation of nitro–nitrito linkage isomers of nickel(II): synthesis and single crystal structures of [NiL2(NO2)2] and [NiL2(ONO)2] [L = 1-(2-aminoethyl)piperidine](RSC, 1998) Laskar, Inamur RahamanThe linkage isomers trans-bis[1-(2-aminoethyl)piperidine]dinitronickel(II) (brown) 1 and trans-bis[1-(2-aminoethyl)piperidine]dinitritonickel(II) (blue) 2 have been synthesized and characterised by X-ray single crystal structure analysis.Item Synthesis of s-fac/mer bis(N2-methyldiethylenetriamine, L) nickel(II): X-ray single crystal structures of s-fac[NiL2](NO3)2 and mer[NiL2](CF3CO2)2(Springer, 1999-06) Laskar, Inamur Rahaman[NiL2](NO3)2 (1) and [NiL2](CF3CO2)2 (2) (L = N2-methyldiethylenetriamine] have been synthesized and their X-ray single crystal structures have been determined. The triamines are ligated to NiII s-facially in (1) and meridionally in (2), with a NiN6 chromophore in each complex.Item A Facile Synthesis of 5-Methyl-1-(phenyl/heterocyclyl)-4-trifluoroacetylpyrazoles(RSC, 1997) Kumar, DalipTreatment of substituted hydrazines (2a–d) with 3-acetyl-4-ethoxy-1,1,1-trifluorobut-3-en-2-one (1) yields the title compounds (3a–d) whereas methylhydrazine on similar treatment gives 4-acetyl-1-methyl-3-trifluoromethylpyrazoleItem Surfactant pillared clays as phase‐transfer catalysts: a facile synthesis of α‐azidoketones from α‐tosyloxyketones and sodium azide(Springer, 1998-08) Kumar, DalipThe use of inexpensive and recyclable phase‐transfer catalysts, surfactant pillared clays, is demonstrated in a simple and highly efficient synthesis of α‐azidoketones from readily accessible α‐tosyloxyketones and sodium azide.Item An Expeditious Synthesis of Flavones on Montmorillonite K 10 Clay with Microwaves(RSC, 1998) Kumar, DalipA manipulatively simple and rapid method for the synthesis of flavones is described via a solid-state dehydrative cyclization of o-hydroxydibenzoylmethanes on a clay surface using microwaves.