Spectrophotometric determination of chromium(VI) with sodium 2-bromo-4,5-dihydroxyazobenzene-4'-sulfonate.
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Direct Spectrophotometric Determination of Ni (II) Using 5- Bromo-2- hydroxyl -3-methoxybenzaldehyde-4-hydroxy benzoichydrazone
: A rapid, simple,sensitive and selective direct spectrophotometric method has been developed for the determination of nickel(II) in various real samples. 5-Bromo-2-hydroxy-3-methoxy benzaldehyde-p-hydroxybenzoic hydrazone reacts with Ni(II) forming green coloured soluble complex [ ( Ni(II)-5-BHMBHBH] in basic buffer solution. The maximum absorbance was observed in the pH range 5.5-7.5 and Ni(I...
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A novel and simple spectrophotometric method for the determination of tiopronin with sodium 1,2-naphthoquinone-4-sulfonate (NQS) is established in this paper. The detailed mechanism is proposed and discussed. It is based on the fact that tiopronin can catalyze the reaction between sodium 1,2-naphthoquinone-4-sulfonate and hydroxyl ion to form 2-hydroxy-1,4-naphthoquinone in a buffer solution of...
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متن کامل2-Bromo-4-methylbenzonitrile
The title mol-ecule, C(8)H(6)BrN, is almost planar (r.m.s. deviation for the non-H atoms = 0.008 Å). In the crystal, weak π-π stacking inter-actions [centroid-centroid separations = 3.782 (2) and 3.919 (2) Å] generate [100] columns of mol-ecules.
متن کامل4-Bromo-2-chloroaniline
The title compound, C(6)H(5)BrClN, is almost planar (r.m.s. deviation = 0.018 Å). In the crystal, mol-ecules are linked by inter-molecular N-H⋯N and weak N-H⋯Br hydrogen bonds, generating sheets.
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ژورنال
عنوان ژورنال: BUNSEKI KAGAKU
سال: 1983
ISSN: 0525-1931
DOI: 10.2116/bunsekikagaku.32.5_e143