Results 81 to 90 of about 220,193 (199)

PGSE and NOE NMR Evidence for Higher Order Aggregation in Some Cationic Ruthenium Complexes in Both Protic and Aprotic Solvents

open access: yes, 2016
PGSE and NOE NMR measurements were carried out for complexes [Ru(η6-cymene)((2-R-C6H4)NC(Me)C(Me)N(2-R-C6H4))Cl]X (X = BF4 or BPh4) in both protic and aprotic solvents with a relative permettivity (εr) ranging from 2.27 (benzene-d6) to 46.45 (dimethyl
Gianfranco Bellachioma (2239336)   +5 more
core   +1 more source

Effect of Polar Protic and Polar Aprotic Solvents on Negative-Ion Electrospray Ionization and Chromatographic Separation of Small Acidic Molecules

open access: yes, 2016
A comprehensive study investigated the effect of polar protic (methanol and water) and polar aprotic (acetonitrile and acetone) solvents on the chromatographic separation and negative-ion electrospray (ESI) response of 49 diverse small, acidic molecules.
Christine A. Hughey (2021368)   +2 more
core   +1 more source

The Influence of Chromophore Structure on Intermolecular Interactions. A Study of Selected Rhodamines in Polar Protic and Aprotic Solvents [PDF]

open access: yes, 2020
We have studied the linear optical response and orientational relaxation dynamics of a family of rhodamine dyes in which there is substantial variation in the chromophore structure. For these chromophores, the identity of a substituent at the center ring
J L Dela Cruz, G J Blanchard
core  

Kinetics of reaction of triethylammonium carboxylates with a-halogeno carbonyl compounds in organic solvents: Part 3-Effect of solvents on the reaction of phenacyl bromide with triethylammonium acetate [PDF]

open access: yes, 1992
427-431Kinetics of the reaction of phenacyl bromide with acetic acid in the presence of triethylamine in aqueous acetone and in various solvents have been investigated.
Muthulakshmi, B, Pillay, M Krishna
core  

Ultrafast Excited-State Dynamics of Hydrogen-Bonded Cytosine Microsolvated Clusters with Protic and Aprotic Polar Solvents

open access: yes, 2018
Microsolvation effects on the ultrafast excited-state deactivation dynamics of cytosine (Cy) were studied in hydrogen-bonded Cy clusters with protic and aprotic solvents using mass-resolved femtosecond pump–probe ionization spectroscopy.
Hung-Chien Yen   +17 more
core   +1 more source

Hydrogen Bonding in ortho-Substituted Arylamides: The Influence of Protic Solvents

open access: yes, 2016
We combine molecular modeling and NMR methods to better understand intramolecular hydrogen bonding (H-bonding) in a frequently used arylamide foldamer building block, ortho-methoxy-N-methylbenzamide.
Zhiwei Liu (151279)   +4 more
core   +1 more source

A Polymer-Supported Rhodium Catalyst that Functions in Polar Protic Solvents

open access: yes, 2016
Highly cross-linked macroporous polymers are excellent supports for heterogenizing rhodium alkene hydrogenation and hydroboration catalysts. The permanent pore structure of the support enables high conversions and excellent yields with minimal workup ...
Rebecca A. Taylor (3062673)   +2 more
core   +1 more source

Dissociation constants of weak organic acids in protic solvents obtained from their first hyperpolarizabilities in solution

open access: yes, 1995
The first hyperpolarizabilities (beta) of some weak aromatic organic acids have been measured in protic solvents by the hyper-Rayleigh scattering (HRS) technique at low concentrations.
Ray, Paresh Chandra, Das, Puspendu Kumar
core   +1 more source

SOLVATOCHROMISM OF ASYMMETRICAL SUBSTITUTED 3,7-DIAMINOPHENOTHIAZINIUM DYE

open access: yesStudia Universitatis Babes-Bolyai Chemia, 2015
A convenient procedure for the synthesis of 3-diethylamino-7-phenylaminophenothiazin-5-ium iodide was developed and the solvatochromism of this blue dye was examined by means of UV-Vis spectroscopy.
Camelia CIOBOTARIU   +2 more
doaj  

Bromination of Alkenes and Related Compounds by Use of Benzyltrimethylammonium Tribromide in Aprotic and Protic Solvents

open access: yes
The reaction of alkenes and related compounds (1) with benzyltrimethyl-ammonium tribromide (BTMA Br_3) in aprotic solvents such as dichloromethane and chloroform gave 1, 2-dibromo adducts in fairly good yields.
柿並, 孝明   +12 more
core  

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