Results 161 to 170 of about 154,407 (221)
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Structure and vibrational spectra of pyridine betaine hydrochloride
Journal of Molecular Structure, 1997Abstract The crystal structure of pyridine betaine hydrochloride (PBET·HCl) was determined by X-ray diffraction to be monoclinic, space group P2 1 c with a = 8.533(2) A , b = 9.548(2) A , c = 10.781(2) A , β = 107.228(3)° and Z = 4.
Mirosław Szafran +3 more
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Calculation of the vibrational spectra of betaine hydrochloride
Journal of Molecular Structure, 1997Abstract The molecular geometries of betaine hydrochloride, BET·HCl, and free protonated betaine, BET·H + , were calculated with the 6–31G(d,p) basis set at the SCF, MP2 and DFT levels of theory. At the SCF level, the minimum energy corresponds to the ionic pair, B + Htctdot;A − , however, the equilibrium Otctdot;Cl distance is 0.14 A shorter than ...
Miroslaw Szafran, Jacek Koput
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Biochimica et Biophysica Acta (BBA) - General Subjects, 2001
Raman vibrational spectroscopy, at 298 K, has been used to study the hydration of betaine hydrochloride and betaine in the concentration range 0.5-2 M. The observed changes in the internal vibrations of the solutes, namely, in the C=O, COO- and C-H stretchings, and in the components of the O-H stretching band are consonant with anionic water-betaine ...
A, Amorim da Costa, J E, Leite
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Raman vibrational spectroscopy, at 298 K, has been used to study the hydration of betaine hydrochloride and betaine in the concentration range 0.5-2 M. The observed changes in the internal vibrations of the solutes, namely, in the C=O, COO- and C-H stretchings, and in the components of the O-H stretching band are consonant with anionic water-betaine ...
A, Amorim da Costa, J E, Leite
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ACS Applied Materials and Interfaces
Metal-organic framework materials (MOFs) have potential for practical applications in solid-phase separation technology. However, no studies of the separation of hafnium and zirconium using MOFs have been performed.
Luyao Yang +3 more
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Metal-organic framework materials (MOFs) have potential for practical applications in solid-phase separation technology. However, no studies of the separation of hafnium and zirconium using MOFs have been performed.
Luyao Yang +3 more
semanticscholar +1 more source
Journal of Agriculture, Aquaculture, and Animal Science
The impact of varied levels of betaine hydrochloride on performance indices, carcass characteristics and thermal stress of broilers during the hot season was assessed by this study. 180 day-old broiler chicks were distributed into 5 treatments labeled T1,
T. S. Oladimeji +9 more
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The impact of varied levels of betaine hydrochloride on performance indices, carcass characteristics and thermal stress of broilers during the hot season was assessed by this study. 180 day-old broiler chicks were distributed into 5 treatments labeled T1,
T. S. Oladimeji +9 more
semanticscholar +1 more source
Polymers for Advanced Technologies
To develop highly efficient antibacterial silicone rubber, this study employed a two‐step grafting method to graft glycidyltrimethylammonium chloride (GTMAC) and betaine hydrochloride (BHC) onto chitosan (CS), synthesizing a novel antibacterial agent ...
Jiang Wang +3 more
semanticscholar +1 more source
To develop highly efficient antibacterial silicone rubber, this study employed a two‐step grafting method to graft glycidyltrimethylammonium chloride (GTMAC) and betaine hydrochloride (BHC) onto chitosan (CS), synthesizing a novel antibacterial agent ...
Jiang Wang +3 more
semanticscholar +1 more source
Cocrystals of bis(4-hydroxy-1-methylpiperidine betaine) hydrochloride
Journal of Molecular Structure, 2006Abstract Bis(4-hydroxy-1-methylpiperidine betaine) hydrochloride, [bis(1-carboxymethyl-4-hydroxy-1-methylpiperidinium) hydrochloride, (HO–MPB) 2 HCl], has been prepared from stoichiometric amounts of β-4-hydroxy-1-methylpiperidine betaine hydrochloride with the OH group in an equatorial position and α-4-hydroxy-1-methylpiperidine betaine inner salt ...
Z. Dega-Szafran +3 more
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Chemical investigation ofPluchea lanceolata II. Identity of pluchine with betaine hydrochloride
Experientia, 1968Die Struktur von Pluchin, einer quaternaren Base ausPluchea lanceolata, wurde als die des Betainhydrochlorids aufgeklart. Damit sind auch die mit Pluchin beobachteten biologischen Wirkungen verstandlich.
B, Dasgupta, K, Basu, S, Dasgupta
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Spectroscopic and theoretical studies of bis(dimethylphenyl betaine) hydrochloride monohydrate
Vibrational Spectroscopy, 2015Abstract Bis(dimethylphenyl betaine) hydrochloride monohydrate was prepared and characterized by FTIR, Raman spectroscopes, and B3LYP/6-311++G(d,p) calculations. In the optimized structure of the complex, two betaine moieties are joined by a very strong asymmetric hydrogen bond with an O⋯O distance of 2.439 A.
Szafran, Mirosław +2 more
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