نتایج جستجو برای: butyl ammonium fluoride

تعداد نتایج: 58755  

2013
Tidiane Diop Arie van der Lee Libasse Diop

In the title compound, [N(C4H9)4][Sn(C4H9)Cl4], the Sn(IV) atom of the stannate anion has a trigonal-bipyramidal coordination sphere by two Cl atoms and one butyl chain in the equatorial plane and by two Cl atoms in the apical positions. Two of the four butyl chains of the tetra-butyl-ammonium cation are partially disordered, each with refined site occupancies of 0.691 (6):0.309 (6). Weak C-H⋯C...

Journal: :Nanoscale 2015
Hailong Yu Xianbo Yu Yujin Chen Shen Zhang Peng Gao Chunyan Li

Nanostructured MoS2 is very promising as an electrocatalyst for hydrogen evolution due to a greater number of active edge sites. However, a very large resistance between basal planes decreases the overall efficiency of hydrogen evolution, and greatly limits its application in industry. Herein we develop a facile strategy to synergistically increase the number of active edge sites and the conduc...

Journal: :The journal of physical chemistry letters 2017
Jacob J Shephard Sanliang Ling Gabriele C Sosso Angelos Michaelides Ben Slater Christoph G Salzmann

The structural nature of high-density amorphous ice (HDA), which forms through low-temperature pressure-induced amorphization of the "ordinary" ice I, is heavily debated. Clarifying this question is important for understanding not only the complex condensed states of H2O but also in the wider context of pressure-induced amorphization processes, which are encountered across the entire materials ...

2016
Dominik Steinle Laura Friedrich Nico Bevilacqua Elizabeth von Hauff Fabienne Gschwind

One of the problems that arise with bifluoride- or fluoride-containing compounds is their poor solubility in non-aqueous solvents. We report herein a facile one-pot synthesis and the chemical analysis of fluoride/bifluoride-containing polymers, which are soluble in MeCN. Different polymers, such as Polyvinylacetate or Polyethylene imine and saccharides, such as maltodextrin, were complexed with...

Journal: :Organic & biomolecular chemistry 2012
Md Masud Parvez Naoki Haraguchi Shinichi Itsuno

Repeated reaction between a chiral quaternary ammonium dimer and disodium disulfonate gave a chiral ionic polymer, which showed excellent catalytic activity in the asymmetric benzylation of N-diphenylmethylene glycine tert-butyl ester.

Journal: :Acta Scientiarum Polonorum-hortorum Cultus 2022

The usefulness of 3 herbicides and flame weeding in lemon balm sown directly into the field was assessed a two-year experiment. Glufosinate-ammonium (600 g∙ha–1) (90 kg propane∙ha–1) were applied 12–13 days after sowing, i.e. shortly weed emergence 4 before crop emergence. Bentazon (960 fluazifop-P-butyl (150 sprayed approximately weeks during balm, when weeds cotyledon – 2–4 true leaves stage....

Journal: :ChemNanoMat 2022

The impact of the NH4F etching on textural and catalytic properties TS-1 was investigated. Two with different crystal sizes, i. e. 200 100 nm; were achieved, as inferred from nitrogen physisorption isotherms at 77 K, mercury porosimetry, powder X-ray diffraction patterns transmission electron microscopy. generation larger mesopores within parent samples observed together a reduction coherent si...

Journal: :Journal of the Ceramic Society of Japan 1989

2013
Ben S. Pilgrim Alice E. Gatland Charlie T. McTernan Panayiotis A. Procopiou Timothy J. Donohoe

A methyl ketone, an aryl bromide, an electrophile, and ammonium chloride were combined in a four-component, three-step, and one-pot coupling procedure to furnish substituted isoquinolines in overall yields of up to 80%. This protocol utilizes the palladium catalyzed α-arylation reaction of an enolate, followed by in situ trapping with an electrophile, and aromatization with ammonium chloride. t...

Journal: :Nucleic acids research 1979
K K Ogilvie S L Beaucage

Tetrabutylammonium fluoride will remove phenyl, trichloroethyl and cyanoethyl groups from nucleotides. In addition to the desired nucleotide products other results including chain cleavage, phosphofluoridates and cyanoethylated thymidine units may be obtained depending on the conditions used. Fluoride ion has been used to successfully exchange phenyl and trichloroethyl groups for methyl, ethyl ...

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