Author
G.K. Sandhu
Bio: G.K. Sandhu is an academic researcher from Guru Nanak Dev University. The author has contributed to research in topics: Trigonal bipyramidal molecular geometry & Carboxylate. The author has an hindex of 15, co-authored 31 publications receiving 659 citations.
Papers
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TL;DR: In this article, the general formulae (R2SnL2 and R2(L)SnOSnR2)R2 (L = N-phthaloyl derivative of l -leucine, dl -alanine, and l-phenylalanine; R = CH3, C5H5, n-C4H9, N-C8H17) and n-CH3, CH5, CH6, CH8H9) have been prepared by reacting ligand and dialkyltin(IV)
78 citations
TL;DR: In this article, 16 complexes of general formula R2SnL2 and R2(L)SnOSnR2 (where L = N-acetyl-L-leucine or Nacetyl)-L-phenylalanine) have been prepared by interaction between the ligand and R 2SnO in 2:1 or 1:1 molar ratio.
68 citations
TL;DR: A series of 20 complexes of general formula R3SnL (R = CH3, n-C3H7, N-C4H9, C6H5, c-C6H11 ; L = anion of thiophene 2-, thiophenes 2-acetic, furoic 2- and pyrrole 2-carboxylic acids) has been prepared as mentioned in this paper.
62 citations
TL;DR: In this article, the diorganotin(IV) complexes of the general formulae [R2Sn(A)2] and {[R2sn(A)]2O} have been prepared and characterized by 1R and 1H NMR spectroscopy and X-ray crystallographic metods.
57 citations
TL;DR: In this article, two types of diorganotin(IV) complexes have been prepared in 1:2 and 1:1 molar ratios (tin:ligand) by reacting diorginotin oxide with thiophenoxyacetic acid.
50 citations
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TL;DR: In this article, the authors reviewed the literature on organotin(IV) complexes taking into account the biological aspects of the complexes discussed and provided useful information about the structure and stabilities of the complex formed.
544 citations
TL;DR: In this paper, the structural chemistry of organotin carboxylates is described, covering data acquired for mono-, di-and tri-organotin compounds and complexes and a brief discussion is given for organotin amino-acid derivatives.
Abstract: This review describes the structural chemistry of organotin carboxylates, covering data acquired for mono-, di- and tri-organotin compounds and complexes. A brief discussion is given for organotin amino-acid derivatives.
443 citations
TL;DR: In this paper, the shielding of γ-rays by concrete has been investigated for concretes containing different amounts of barite and normal weight aggregates, and the linear attenuation coefficients ( μ, cm −1 ) have been calculated at photon energies of 1-keV to 100-GeV using XCOM.
Abstract: The shielding of γ-rays by concrete has been investigated for concretes containing different amounts of barite and normal weight aggregates. The linear attenuation coefficients ( μ , cm −1 ) have been calculated at photon energies of 1 keV to 100 GeV using XCOM and the obtained results compared with the measurements at the photon energies of 0.66 MeV and 1.33 MeV. It is shown that the type of the aggregate is more important than the amount of aggregate used in concrete for γ-ray shielding.
277 citations
TL;DR: In this article, a comprehensive review on organotin(IV) complexes of the amino acids and peptides is presented with special reference to their methods of synthesis, structural and thermal properties as well as their solution studies and biological activity.
267 citations
TL;DR: In this paper, the impact of 119Sn nuclear magnetic resonance (NMR) parameters, determined either by 119Sn NMR or in the NMR spectra of other nuclei, on tin chemistry is remarkable.
Abstract: Publisher Summary This chapter reviews that the impact of 119Sn nuclear magnetic resonance (NMR) parameters, determined either by 119Sn NMR or in the NMR spectra of other nuclei, on tin chemistry is remarkable. Nowadays, tin chemical shifts coupling constants and nuclear spin relaxation, with respect to the physical principles, is growing. At the same time, the application of more or less sophisticated NMR techniques enables one to monitor the reactions, identify the unstable intermediates, discover their relevance for mechanistic implications, assign the structural features, investigate the intra- and intermolecular dynamic processes, or to compare the structures in the solid and liquid state. 119Sn NMR parameters, in addition to those of the more common nuclei, for example, 1H, 13C, or 31P, add to the attempts at a more complete description of the bonding situation. The chapter suggests that it must be emphasized that the great potential of modern NMR spectrometers can be exploited by a multinuclear approach to obtain a large self-consistent set of NMR data. This also includes the isotope induced chemical shifts and long-range coupling constants that have been neglected in the past.
182 citations