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A water-soluble glucose-functionalized cobalt(III) complex as an efficient electrocatalyst for hydrogen evolution under neutral conditions

17-12-2014 | Xuguang Yin; Cuibo Liu; Sifei Zhuo; You Xu; Bin Zhang, Dalton Transactions, 2014

A water-soluble glucose-functionalized cobalt(iii) complex [CoIII(dmgH)2(py-glucose)Cl] is active and stable for electrocatalytic hydrogen production in neutral aqueous solution.

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The Effect of the Spacer of Bis(biurea) Ligands on the Structure of A2L3‐type (A=anion) Phosphate Complexes

11-12-2014 | Biao Wu, Shaoguang Li, Yibo Lei, Huaiming Hu, Nader de Sousa Amadeu, Christoph Janiak, Jennifer S. Mathieson, De‐Lia ..., Chemistry - A European Journal, 2014

Abstract By tuning the length and rigidity of the spacer of bis(biurea) ligands L, three structural motifs of the A2L3 complexes (A represents anion, here orthophosphate PO43−), namely helicate, mesocate, and mono‐bridged motif, have been assembled by coordination of the ligand to phosphate ...

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Including Thermal Disorder of Hydrogen Bonding to Describe the Vibrational Circular Dichroism Spectrum of Zwitterionic l-Alanine in Water

11-12-2014 | Ednilsom Orestes; Carlos Bistafa; Roberto Rivelino; Sylvio Canuto, Journal of Physical Chemistry A, 2014

The vibrational circular dichroism (VCD) spectrum of l-alanine amino acid in aqueous solution in ambient conditions has been studied. The emphasis has been placed on the inclusion of the thermal disorder of the solute–solvent hydrogen bonds that characterize the aqueous solution condition. A ...

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Solvation of a Cellulose Microfibril in Imidazolium Acetate Ionic Liquids: Effect of a Cosolvent

11-12-2014 | Sadiye Velioglu; Xun Yao; Julien Devémy; M. Goktug Ahunbay; S. Birgul Tantekin-Ersolmaz; Alain Dequidt; Margarida F. ..., Journal of Physical Chemistry B, 2014

The solvation and the onset of dissolution of a cellulose Iβ microcrystal in ionic liquid media are studied by molecular simulation. Ionic liquids can dissolve large amounts of cellulose, which can later be regenerated from solution, but their high viscosity is an inconvenience. Hydrogen bonding ...

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Solution and solid-phase halogen and C-H hydrogen bonding to perrhenate

10-12-2014 | Casey John Massena; Asia Marie S Riel; George Francis Neuhaus; Daniel Adam Decato; Orion Berryman, Chemical Communication, 2014

1H NMR spectroscopic and X-ray crystallographic investigations of a 1,3-bis(4-ethynyl-3-iodopyridinium)benzene scaffold with perrhenate reveal strong halogen bonding in solution, and bidentate association in the solid state. A nearly isostructural host molecule demonstrates significant C–H ...

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Solution Studies on DNA Interactions of Substitution-inert Platinum Complexes mediated via The Phosphate Clamp

10-12-2014 | Yun Qu; Ralph G Kipping; Nick P Farrell, Dalton Transactions, 2014

The phosphate clamp is a distinct mode of ligand-DNA binding where the molecular is manifest through (“non-covalent”) hydrogen-bonding from am(m)ines of polynuclear platinum complexes to the phosphate oxygens on the oligonucleotide backbone. This third mode of DNA is unique from the “classical” ...

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Effect of Solvent Dielectric Constant and Acidity on the OH Vibration Frequency in Hydrogen-Bonded Complexes of Fluorinated Ethanols

09-12-2014 | Dina Pines; Sharon Keinan; Philip M. Kiefer; James T. Hynes; Ehud Pines, Journal of Physical Chemistry B, 2014

Infrared spectroscopy measurements were used to characterize the OH stretching vibrations in a series of similarly structured fluoroethanols, RCH2OH (R = CH3, CH2F, CHF2, CF3), a series which exhibits a systematic increase in the molecule acidity with increasing number of F atoms. This study, ...

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Synthesis, characterization, and performance evaluation of the AM/AMPS/DMDAAC/SSS quadripolymer as a fluid loss additive for water‐based drilling fluid

08-12-2014 | Xiaodong Bai, Yi Yang, Dingyuan Xiao, Xiaolin Pu, Xu Wang, Journal of Applied Polymer Science, 2014

ABSTRACT According to the molecular structure design requirements of the fluid loss additive resistant to high temperature, 2‐acrylamide‐2‐methyl propane sulfonic acid (AMPS), acrylamide (AM), dimethyl diallyl ammonium chloride (DMDAAC) and sodium styrene sulfonate (SSS) are selected as the ...

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Hydrogen Polyoxides H2O3 and H2O4 as Components of Peroxy Radical Condensate Obtained From Electro-Dissociated Water Vapor

07-12-2014 | Author(s): Alexander V. Levanov , Oksana Ya. Isaykina , Ewald E. Antipenko , Valerii V. Lunin, Chemical Physics, 2014

Publication date: Available online 5 December 2014 Source:Chemical Physics Author(s): Alexander V. Levanov , Oksana Ya. Isaykina , Ewald E. Antipenko , Valerii V. Lunin The peroxy radical condensate synthesized from electro-dissociated water vapor has been investigated by the methods of ...

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Vectorial Electron Transfer for Improved Hydrogen Evolution by Mercaptopropionic‐Acid‐Regulated CdSe Quantum‐Dots–TiO2–Ni(OH)2 Assembly

03-12-2014 | Shan Yu, Zhi‐Jun Li, Xiang‐Bing Fan, Jia‐Xin Li, Fei Zhan, Xu‐Bing Li, Ye Tao, Chen‐Ho Tung, Li‐Zhu Wu, ChemSusChem, 2014

Abstract A visible‐light‐induced hydrogen evolution system based on a CdSe quantum dots (QDs)–TiO2–Ni(OH)2 ternary assembly has been constructed under an ambient environment, and a bifunctional molecular linker, mercaptopropionic acid, is used to facilitate the interaction between CdSe QDs and ...

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