Titration of Amides in Acetic Anhydride with Perchloric Acid.
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چکیده
منابع مشابه
Heats of formation of perchloric acid, HClO4, and perchloric anhydride, Cl2O7. Probing the limits of W1 and W2 theory
The heats of formation of HClO4 and Cl2O7 have been determined to chemical accuracy for the first time by means of W1 and W2 theory. These molecules exhibit particularly severe degrees of inner polarization, and as such obtaining a basis-set limit SCF component to the total atomization energy becomes a challenge. (Adding high-exponent d functions to a standard spd basis set has an effect on the...
متن کاملAnharmonic force fields of perchloric acid, HClO4, and perchloric anhydride, Cl2O7. An extreme case of inner polarization
DFT (density functional theory) anharmonic force fields with basis sets near the KohnSham limit have been obtained for perchloric acid, HClO4, and perchloric anhydride, Cl2O7. Calculated fundamental frequencies are in very good agreement with available experimental data. Some reassignments in the vibrational spectra of Cl2O7 are proposed based on our calculations. HClO4 and Cl2O7 are particular...
متن کاملDetermination of lead chelated with ethylenediaminetetra-acetic acid in blood after precipitation of protein with perchloric acid.
Cernik, A. A. (1970). Brit. J. industr. Med., 27, 40-42. Determination of lead chelated with ethylenediaminetetra-acetic acid in blood after precipitation of protein with perchloric acid. A method is described for the determination of lead in whole blood containing ethylenediaminetetra-acetic acid. Proteins were precipitated by 2-0 M perchloric acid. The ionized lead in the supernatant was chel...
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An inexpensive, simple, precise and rapid method for the determination of fluoroquinolone gatifloxacin in tablets is described. The procedure is based on the use of volumetric dosage in a non-aqueous medium in glacial acetic acid with 0.1 M perchloric acid. The method validation yielded good results and included the precision, recovery and accuracy. It was also found that the excipients in the ...
متن کاملLabeling of high density lipoproteins with [3H] acetic anhydride.
Rat serum HDL was labeled by reaction with [3H] acetic anhydride at pH 7.2 for 30 min at room temperature by a modification of the method of Montelaro and Rueckert (1975. J. Biol. Chem. 250: 1413). Protein specific activities of 60 dpm/ng were achieved. Seven percent of the label was in lipid, of which 92 percent was recovered in phospholipid. The labeled HDL migrated as a single band as seen b...
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ژورنال
عنوان ژورنال: Acta Chemica Scandinavica
سال: 1964
ISSN: 0904-213X
DOI: 10.3891/acta.chem.scand.18-1311a