Institution
North Eastern Hill University
Education•Shillong, Meghalaya, India•
About: North Eastern Hill University is a education organization based out in Shillong, Meghalaya, India. It is known for research contribution in the topics: Population & Ruthenium. The organization has 2318 authors who have published 4476 publications receiving 48894 citations.
Topics: Population, Ruthenium, Ligand, Catalysis, Micelle
Papers published on a yearly basis
Papers
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TL;DR: Cadmium sulfide particles synthesized in the aqueous medium using the amino acid histidine as a stabilizing agent demonstrate the phenomenon of size quantization effect and the fluorescence enhancement of CdS in the presence of adenine is explained.
28 citations
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TL;DR: In this paper, the impact of coal mining on different aspects of vegetation of the Nokrek Biosphere Reserve (NBR) was analyzed and three coal mining sites, viz. Budugiri, Buduwathegiri and Faramgiri were randomly selected from the 18 sites present within the biosphere reserve.
Abstract: Extensive coal mining activity in the buffer zone of the Nokrek Biosphere Reserve (NBR) in Meghalaya, India, has led to habitat degradation and a landscape dotted with mine spoils. The present study analyses the impact of coal mining on different aspects of vegetation of the NBR. For this purpose, three coal mining sites, viz. Budugiri, Buduwathegiri and Faramgiri, were randomly selected from the 18 sites present within the biosphere reserve. It was found that the total number of species was much less in mined areas than un-mined areas. Tree and shrub populations showed a drastic reduction in their species composition due to coal mining. The density of trees, shrubs and herbs in mined areas was significantly lower than in un-mined areas at all three sites. The basal area of trees follows the same trend as density. The dominance of plant species was shared by many species both at un-mined and mined sites. Fifteen species of trees, four shrubs and 28 herb species were found in mined sites, while 27 tree spe...
28 citations
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TL;DR: In this paper, the reaction of NH4PF6 with chelating 2-(2′-pyridyl)imidazole (N∩-N) ligands yields cationic complexes of the type [CpM(N ∩ ǫ n)(PPh3)]+ (1: Mǫ,Ru, Nǫ∞Nǫ=2-(2.5-dimethylimidazoles)benzimidaxole).
28 citations
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TL;DR: Indole 2,3-dienolate derived by deprotonation of 1,2-dimethylindole-3-carboxaldehyde is shown to be useful 1,4-dipole synthon (anionic indolo-2, 3-quinodimethane) which undergoes facile cycloaddition with wide range of dienophiles affording substituted carbazoles in highly regiospecific fashion as discussed by the authors.
28 citations
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TL;DR: The QTAIM analysis was found to be able to uniquely distinguish between the ground and excited states of the OHBA molecule as well as both determining the effects on the bonding character of adding different substituent groups and differentiating between the ESIPT reactions in the SA and MS molecules.
Abstract: Excited state intramolecular proton transfer (ESIPT) reaction along the O-H⋅⋅⋅⋅O hydrogen bond of o-hydroxy benzaldehyde (OHBA), methyl salicylate (MS) and salicylic acid (SA) was investigated by ab-initio quantum chemical calculation and theory of atoms and molecules (QTAIM) for the first time. Variation in several geometric as well as QTAIM parameters along the reaction coordinate was monitored in the fully relaxed excited state potential energy curve (PEC) obtained from intrinsic reaction coordinate (IRC) analysis. Although, the excited state barrier height for the forward reaction (∆E
0
#
) reduces substantially in all the systems, MS and SA do not show any obvious asymmetry for proton transfer. For MS and SA, the crossover of the bond index as well as the lengths of the participating bonds at the saddle point is assigned due to this symmetry in accordance with bond energy – bond order (BEBO) model, which does not hold true in OHBA both in the ground and excited states. Bond ellipticity, covalent and metallic character were examined for different structures along the reaction path within the QTAIM framework. The QTAIM analysis was found to be able to uniquely distinguish between the ground and excited states of the OHBA molecule as well as both determining the effects on the bonding character of adding different substituent groups and differentiating between the ESIPT reactions in the SA and MS molecules.
28 citations
Authors
Showing all 2368 results
Name | H-index | Papers | Citations |
---|---|---|---|
Vivek Sharma | 150 | 3030 | 136228 |
Patrick J. Carroll | 58 | 505 | 13046 |
Majeti Narasimha Vara Prasad | 56 | 227 | 15193 |
Arun Sharma | 55 | 371 | 11364 |
Michael Schmittel | 53 | 387 | 10461 |
Birgitta Bergman | 52 | 187 | 10975 |
Harikesh Bahadur Singh | 46 | 307 | 7372 |
Lal Chand Rai | 40 | 134 | 4513 |
B. Dey | 40 | 354 | 8089 |
Hiriyakkanavar Ila | 36 | 407 | 5633 |
Jürgen-Hinrich Fuhrhop | 35 | 208 | 5130 |
Sreebrata Goswami | 34 | 142 | 3228 |
Gagan B.N. Chainy | 33 | 107 | 4151 |
J.P. Gaur | 31 | 64 | 3957 |
Hiriyakkanavar Junjappa | 30 | 349 | 4102 |