نتایج جستجو برای: imidazolium based salts

تعداد نتایج: 2959675  

2013
Yannick Raoul des Essarts Mohamad Sabbah Arnaud Comte Laurent Soulère Yves Queneau Yves Dessaux Valérie Hélias Denis Faure

Bacteria belonging to the Pectobacterium genus are the causative agents of the blackleg and soft-rot diseases that affect potato plants and tubers worldwide. In Pectobacterium, the expression of the virulence genes is controlled by quorum-sensing (QS) and N-acylhomoserine lactones (AHLs). In this work, we screened a chemical library of QS-inhibitors (QSIs) and AHL-analogs to find novel QSIs tar...

Journal: :Dalton transactions 2012
Jin Yang Lei Wang

Four linear dinuclear N-heterocyclic carbene (NHC)-palladium complexes {[PdCl(2)(NHC)](2)(μ-L)·xCH(2)Cl(2)} (1-4, L = pyrazine, DABCO) were synthesized through one-pot reactions of imidazolium salts, PdCl(2) and various bidentate N-heterocycles under mild conditions. The compounds were fully characterized by NMR, FT-IR and elemental analysis. Among them, complexes [PdCl(2)L(Mes)](2)(μ-pyrazine)...

Journal: :Inorganic chemistry 2014
Si-Fu Tang Chantal Lorbeer Xinjiao Wang Pushpal Ghosh Anja-Verena Mudring

Four salts containing imidazolium cations and europium(III)- or terbium(III)-centered complex anions have been successfully synthesized from an ethanol/H2O solution. The single-crystal X-ray diffraction analyses reveal that these compounds have a common formula of [R][Ln(DETCAP)4] [R = 1-ethyl-3-methylimidazolium (C2mim), Ln = Eu (1) and Tb (2); R = 1-butyl-3-methylimidazolium (C4mim), Ln = Eu ...

Journal: :Chemical communications 2011
Shigeo Kohmoto Ryota Tsuyuki Yujiro Hara Akira Kaji Masahiro Takahashi Keiki Kishikawa

Amphiphilic anthracene derivatives showed solvent-polarity-dependent fluorescence. Monomer emission and aggregation-induced emission (AIE) were observed in polar and non-polar organic solvents, respectively. AIE became predominant in aqueous solution in the case of hexafluorophosphate as a counter anion.

Journal: :Drug testing and analysis 2015
John D Power Pierce Kavanagh Gavin McLaughlin John O'Brien Brian Talbot Michael Barry Brendan Twamley Geraldine Dowling Simon D Brandt

4-Methylmethcathinone (2-methylamino-1-(4-methylphenyl)propan-1-one, mephedrone) is a psychoactive substance that has been associated with recreational use worldwide. Analytical data related to mephedrone are abundantly available but the characterization of by-products obtained during organic synthesis remains to be explored. This study presents the identification of a 1,2,3,5-tetramethyl-4-(4-...

Journal: :Dalton transactions 2018
Pierre-Henri Lanoë Jonny Chan Antoine Groué Geoffrey Gontard Anny Jutand Marie-Noelle Rager Nicola Armaroli Filippo Monti Andrea Barbieri Hani Amouri

A series of cyclometalated N-heterocyclic carbene complexes of the general formula [Ir(C^N)2(C^C:)] has been prepared. Two sets of compounds were designed, those where (C^C:) represents a bidentate naphthalimide-substituted imidazolylidene ligand and (C^N) = ppy (3a), F2ppy (4a), bzq (5a) and those where (C^C:) represents a naphthalimide-substituted benzimidazolylidene ligand and (C^N) = ppy (3...

Journal: :Green chemistry : an international journal and green chemistry resource : GC 2016
Hugo F D Almeida Mara G Freire Isabel M Marrucho

In the past few years, the improvement of advanced analytical tools allowed to confirm the presence of trace amounts of metabolized and unchanged active pharmaceutical ingredients (APIs) in wastewater treatment plants (WWTPs) as well as in freshwater surfaces. It is known that the continuous contact with APIs, even at very low concentrations (ng L-1-μg L-1), leads to serious human health proble...

2016
Pierre Farger Cédric Leuvrey Mathieu Gallart Pierre Gilliot Guillaume Rogez Pierre Rabu

The syntheses and characterization of four new hybrid coordination networks based on lanthanide ions (Ln = Nd, Sm) and 1,3-carboxymethylimidazolium (L) salt in the presence of oxalic acid (H2ox) are reported. The influence of the synthesis parameters, such as the nature of the lanthanide ion (Nd3+ or Sm3+), the nature of the imidazolium source (chloride [H2L][Cl] or zwitterionic [HL] form) and ...

2011
Christopher A. Dodds Mark D. Spicer Tell Tuttle

The reaction of WOCl4 with 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene (Idipp) leads to an orange solid whose spectroscopic data are consistent with the 1:1 adduct [WOCl4(Idipp)]. Computational studies at the DFT level further support this formulation. Exposure of this compound to the atmosphere results in rapid hydrolysis to various imidazolium salts. If air diffuses very slowly into solu...

2008
Steven Tai-hsiang Chao Christopher W. Bielawski

Author: Steven Tai-hsiang Chao Title: Designer Benzimidazoles: Synthesis, Characterization, and Applications Supervising Professor: Christopher W. Bielawski, Ph.D. The research presented in this thesis is centered on the design and synthesis of molecules which are derived from benzimidazoles and their applications. The first chapter provides an introduction to benzimidazoles and N-heterocyclic ...

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