ammonium salts
Crystal structures of three new N halomethylated quaternary ammonium salts
... Quaternary ammonium salts have been widely studied as anti- cancer (Wang et ...N-halomethyl ammonium salts for likely pharmaceutical purposes, specifi- cally against axenic ...quaternary ...
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Two dimensional hydrogen bonded polymers in the crystal structures of the ammonium salts of phenoxyacetic acid, (4 fluorophenoxy)acetic acid and (4 chloro 2 methylphenoxy)acetic acid
... an ammonium salt of a phenoxyacetic acid [with the commercially important herbicide, the 2,4-di- chloro-substituted analogue (2,4-D) (a hemihydrate) (Liu et ...anhydrous ammonium salts of the parent ...
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Porous polymers bearing functional quaternary ammonium salts as efficient solid catalysts for the fixation of CO2 into cyclic carbonates
... The ionic polymers are white powders and insoluble in water or common organic solvents, such as acetone, ethanol, chloroform, hexanes, N,N-dimethylformamide (DMF), and tetrahydrofuran (THF). The CHN elemental analysis ...
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STRUCTURAL AND INSILICO STUDIES ON HYDRAZINIUM AND AMMONIUM SALTS OF ETHYLENEDIAMINETETRAACETIC ACID AND 1,2 TRANS CYCLOHEXANEDIAMINETETRAACETIC ACID
... of salts with weak bases like hydrazine and ammonia though with strong bases all the acidic protons are ...These salts are usually water soluble and have number of donor ...these salts are expected ...
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Biodegradable Quaternary Ammonium Salts for Processing Iron Ores
... Quaternary ammonium salts (QAS) belong to an important class of cationic surfactants and can be used as fabric softeners, antistatic agents, germicides and additives associated with chemical ...
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SYNTHESIS AND ANTIMICROBIAL EVALUATION OF SYMMETRICAL DIQUATERNARY AMMONIUM SALTS BEARING BIS-1,3,4-OXADIAZOLE RINGS MOIETIES
... quaternary ammonium salt was obtained by ...quaternary ammonium salts moieties can serve as interesting lead molecules for further synthetic and biological ...
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Synthesis and evaluation of a novel antibacterial dental resin composite with quaternary ammonium salts
... the key to long-lasting dental restorations when the mi- croleakage or materials failure occurs at the interface. Quaternary ammonium salts (QAS) and their constructed materials represent a new trend of ...
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RNA species whose transcription is totally silent in pre MBT stage are not mRNA but rRNA and possible involvement of weak bases (ammonium salts and/or amines) in the transcriptional silence of rRNA genes during the pre MBT stage in Xenopus early embryos
... was ammonium per- chlorate that was formed artifactually during the charcoal column chromatography ...how ammonium salts affect rRNA synthesis in Xenopus neurula ...
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Synthesis and structural studies of a new class of quaternary ammonium salts, which are derivatives of cage adamanzane type aminal 1, 3, 6, 8-tetraazatricyclo[4.3.1.13,8]undecane (TATU)
... Quaternary ammonium salts have multiple uses in industry, in laboratories and in the ...in ammonium salts has concerned their utilization in templating organic molecules in the synthesis of ...
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Partial Molar Volumes of Tetra alkyl ammonium salts in 10%(W/W) 2-(Ethoxy) ethanol – Water mixture
... The parameter S V * is the volumetric virial coefficient and it characterizes the pair wise interactions of solvated species in solution (Natarajan.M.et al. 1990) The sign of S V * determined by interaction between the ...
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THE DIFFERENTIAL TOXICITY OF AMMONIUM SALTS
... This alkalosis may effect significantly the toxicity of a given amount of ammonia in the blood and may be one of the factors accounting for the poor relationship between blood ammonia le[r] ...
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Permeability of the Abdominal Nerve Cord of the American Cockroach, Periplaneta Americana L to Quaternary Ammonium Salts
... The influx and efflux of two series of quaternary alkylammonium cations in the abdominal nerve cord of the American cockroach have been studied.. The data are interpreted as showing that[r] ...
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Crystal structures and hydrogen bonding analysis of a series of solvated ammonium salts of molybdenum(II) chloride clusters
... p-phenylenedi- ammonium tetrachloridozincate(II) (Bringley & Rajeswaran, 2006) also displays alternating organic and inorganic layers and strong hydrogen bonding between the tetrachlorido- zinc(II) anions and ...
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Quaternary Ammonium Salts of Poly(N,N-dimethylaminoethyl methacrylate) as an Efficient Antibacterial Agent for Polylactide Textiles
... PDMAEMA can also be autocrosslinked, due to chain transfers to the polymer; however, the autocrosslinking is too weak to prevent PDMAEMA from dissolution in aqueous solution. PDMAEMA can also be crosslinked by heat ...
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Nickel Coatings Electrodeposited from Watts Type Baths Containing Quaternary Ammonium Sulphate Salts
... quaternary ammonium sulphate salts using two different current ...quaternary ammonium salts in its ...aprotic salts with three -CH ...
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Phase Change and Regeneration Behaviors of Amino Acid Ionic Liquids Absorbents
... Abstract: As novel materials for carbon capture, phase change solvents can separate into two immiscible phases during the CO2 capturing procedure under a certain temperature. The solvent systems can significantly ...
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Bis(triethylammonium) tetrachloridomanganate(II)
... quaternary ammonium salts (a full list of REFCODES is given in the deposited Comment section), but there are no previously reported structures for secondary or tertiary ammonium ...
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Ftir spectral analysis of the phytoconstituents in the mace of Myristica fragrans for the detection of possible adulteration with the mace of Myristica malabarica and Myristica beddomii
... quinones, ammonium salts, primary/ secondary/tertiary amines, phenols and primary/secondary ...quinones, ammonium salts, phenols, primary/secondary/tertiary alcohols, nitriles, sulphides, ...
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Chemotaxis of Meloidogyne incognita in Response to Different Salts
... different salts at six concentrations are shown in Figures ...the salts containing Cl − and SCN − anions were repellent to ...Other salts that comprised the same anions had different chemotactic ...
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Phosphorus & Fluorine Toxicity Saunders pdf
... INDEX one-stage process for D.F.P., 6, 46 quaternary ammonium salts containsynthesis of M.F.A., 114, 119 ing fluorine, 17, 132, 135, 136 synthesis of PCN compounds, 91 quaternary N group[r] ...
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