Oven versus Bunsen Burner When Heating Copper(II) Chloride Dihydrate
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l-Nebiviololinium chloride dihydrate
The hydro-chloride salt of chiral l-nebivolol {systematic name: (+)-(R,S,S,S)-bis-[2-(6-fluoro-3,4-dihydro-2H-1-benzopyran-2-yl)-2-hydroxy-ethyl]ammonium chloride dihydrate}, C(22)H(26)F(2)NO(4) (+)·Cl(-)·2H(2)O, was obtained by chiral liquid chromatography as a dihydrate. The pyran rings adopt half-chair conformations. Hydrogen bonds between the cation, anions and water mol-ecules contribute t...
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The title compound, C(9)H(7)IN(+)·Cl(-)·2H(2)O, was obtained during the synthesis of 8-iodo-quinoline from 8-amino-quinoline using the Sandmeyer reaction. The 8-iodo-quinolinium ion is almost planar. Solvent water mol-ecules and chloride ions form a hydrogen-bonded chain along the c axis via O-H⋯Cl links. The 8-iodo-quinolinium ions, which are packed along the c axis with cationic aromatic π-π ...
متن کاملdl-Tyrosinium chloride dihydrate
In the title compound, C(9)H(12)NO(3) (+)·Cl(-)·2H(2)O, the cation has a protonated amino group resulting from proton transfer from chloridric acid. The structure displays double layers parallel to the [010] direction held together by N-H⋯O, N-H⋯Cl, O-H⋯O and O-H⋯Cl hydrogen bonds. These layers are stacked along the c axis at b = 1/2; within each layer, the tyrosinium cations are arranged in an...
متن کاملFast Labeling of Technetium-99m-Sestamibi with Microwave Oven Heating
Technetium-99m-methoxy isobutyl isonitrile ("'Tc-MIBI) imaging can be useful to assess myocardial sal11age following t ltrombolysis. In such acute conditions, MIBI must be readi(v a11ailab/e. The standard labeling method requires a 10-min boiling period in a boiling water bath (BWB). The purpose of this study was to compare the BWB technique to a microwa11e o11en heating (MOH) method. Two serie...
متن کامل2-Amino-4,6-dimethylpyridinium chloride dihydrate
In the title hydrated mol-ecular salt, C(7)H(11)N(2) (+)·Cl(-)·2H(2)O, the pyridine N atom of the 2-amino-4,6-dimethyl-pyridine mol-ecule is protonated. The cation is essentially planar, with a maximum deviation of 0.006 (2) Å. In the crystal, the components are linked by N-H⋯O, N-H⋯Cl and O-H⋯Cl hydrogen bonds, thereby forming sheets lying parallel to (100). The crystal structure is further st...
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ژورنال
عنوان ژورنال: Journal of Chemical Education
سال: 2008
ISSN: 0021-9584,1938-1328
DOI: 10.1021/ed085p1345.2