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35,918 Newest Publications about the topic solution

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Theoretical Estimation of Kinetic Parameters for Nucleophilic Substitution Reactions in Solution: An Application of Solution Translational Entropy Model

02-Feb-2016 | Ling-Li Han; Shi-Jun Li; De-Cai Fang, Physical Chemistry Chemical Physics, 2016

The kinetic parameters, such as activation entropy, activation enthalpy, activation free energy, and reaction rate constant, for a series of nucleophilic substitution (SN) reactions in solution, are investigated using both a solution translational entropy model and an ideal gas-phase ...

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Structural characterization of aqueous solution poly(oligo(ethylene oxide) monomethyl methacrylate)-grafted silica nanoparticles

02-Feb-2016 | Arnaldo T. Lorenzo; Ramakrishna Ponnapati; Tirtha Chatterjee; Ramanan Krishnamoorti, Faraday Discussions, 2016

The structure of aqueous dispersions of poly(oligo(ethylene oxide) monomethyl methacrylate)-grafted silica nanoparticles was characterized using contrast variation small-angle neutron scattering studies. Modeling the low hybrid concentration dispersion scattering data using a fuzzy sphere and a ...

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Insight on the Li2S electrochemical process in a composite configuration electrode

02-Feb-2016 | Lorenzo Carbone; Roberta Verrelli; Mallory Gobet; Jing Peng; Matthew Devany; Bruno Scrosati; Steve G. Greenbaum; Jus ..., New Journal of Chemistry, 2016

A novel, low cost and environmentally sustainable lithium sulfide-carbon composite cathode, suitably prepared by combining polyethylene oxide (PEO), LiCF3SO3 and Li2S-C powders is here presented. The cathode is characterized in lithium-metal cell employing a solution of LiCF3SO3 salt in ...

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Mechanism of intramolecular transformations of nickel phosphanido hydride complexes

02-Feb-2016 | Shamil K. Latypov; Fedor M. Polyancev; Yulia S. Ganushevich; Vasily A. Miluykov; Oleg G. Sinyashin, Dalton Transactions, 2016

In solution, nickel phosphanido hydride complexes ([NiH{P(Ar)(H)}(dtbpe)], Ar = Dmp, Mes*) undergo a degenerate intramolecular exchange, with the Ni–H and P–H hydrogens and both halves of the dtbpe moiety interchanging. This intramolecular rearrangement was shown to occur in three steps: first, ...

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Phosphidoboratabenzene–rhodium(I) complexes as precatalysts for the hydrogenation of alkenes at room temperature and atmospheric pressure

02-Feb-2016 | Viridiana Perez; Pierre Audet; Wenhua Bi; Frédéric-Georges Fontaine, Dalton Transactions, 2016

The di-tert-butylphosphido-boratabenzene ligand (DTBB) reacts with [(C2H4)2RhCl]2 yielding the dimeric species [(C2H4)Rh(DTBB)]2 (1). This species was fully characterized by multinuclear NMR and X-ray crystallography. Complex 1 readily dissociates ethylene in solution and upon exposure to 1 atm ...

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Half-sandwich nickel complexes with ring-expanded NHC ligands – synthesis, structure and catalytic activity in Kumada-Tamao-Corriu coupling

02-Feb-2016 | Łukasz Banach; Piotr Aleksander Guńka; Wlodzimierz Buchowicz, Dalton Transactions, 2016

A general synthesis of complexes [Ni(Cp)(X)(NHC)] from a nickel halide, CpLi, and a carbene solution is reported. This procedure yields unprecedented complexes with ring-expanded NHC ligands (RE-NHC) of six- (1a, 1b), seven- (1c), and eight-membered (1d) heterocycles. The NMR spectra of 1a-1d are ...

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Got LiZnP? Solution Phase Synthesis of Filled Tetrahedral Semiconductors in the Nanoregime

02-Feb-2016 | Miles Arthur White; Michelle J Thompson; G Miller; Javier Vela, Chemical Communication, 2016

We report the synthesis and characterization of nanocrystalline LiZnP. The reaction proceeds through a zinc metal intermediate followed by rapid incorporation of lithium and phosphorus. We demonstrate flexibility in the selection of Li, Zn, and P precursors, as well as extension of this method to ...

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K(Mn,Zn)F3 Mesoporous Microspheres: One-Pot Synthesis via the Nanoscale Kirkendall Effect

02-Feb-2016 | S. Ding; X. F. Yang; Ting-Ting Deng; E. H. Song; Zhijun Ma; Shi Ye; Mingmei Wu; Qinyuan Zhang, CrystEngComm, 2016

Solid-solution phase K(Mn,Zn)F3 mesoporous microspheres have been successfully prepared via a simple one-pot hydrothermal method by using citrate ions as chelating agent. Effects of the reaction time on the phase transformation and morphological evolution of K(Mn,Zn)F3 microspheres have been ...

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Buffering Agents Modify the Hydration Landscape at Charged Interfaces

02-Feb-2016 | William John Trewby; Duncan Livesey; Kislon Voitchovsky, Soft Matter, 2016

Buffering agents are widely used to stabilise the pH of solutions in soft matter and biological sciences. They are typically composed of weak acids and bases mixed in an aqueous solution, and can interact electrostatically with charged surfaces such as biomembranes. Buffers can induce protein ...

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Highly selective transformation of glycerol to dihydroxyacetone without using oxidants by PtSb/C-catalyzed electrooxidation process

02-Feb-2016 | Seonhwa Lee; Hyung Ju Kim; Eun Ja Lim; Youngmin Kim; Yuseong Noh; George Huber; Won Bae Kim, Green Chemistry, 2016

We demonstrate an electrocatalytic reactor system for the partial oxidation of glycerol in an acidic solution to produce value-added chemicals, such as dihydroxyacetone (DHA), glyceraldehyde (GAD), glyceric acid (GLA), and glycolic acid (GCA). Under optimized conditions, the carbon-supported ...

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