4,4′-Bipyridine–3-(thiophen-3-yl)acrylic acid (1/2)
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چکیده
منابع مشابه
4 , 4 0 - Bipyridine – 3 - ( thiophen - 3 - yl ) acrylic acid ( 1 / 2 )
In the title 1/2 adduct, C10H8N2 2C7H6O2S, the dihedral angle between the pyridine rings is 18.41 (11) . In the thiopheneacrylic acid molecules, the dihedral angles between the respective thiophene and acrylic acid units are 5.52 (17) and 23.92 (9) . In the crystal, the components are linked via O—H N hydrogen-bonding interactions, forming units of two 3-thiopheneacrylic acid molecules and one ...
متن کامل(Z)-3-(1-Methyl-1H-indol-3-yl)-2-(thiophen-3-yl)acrylonitrile.
The title compound, C16H12N2S, has been synthesized by base-catalyzed condensation of 1-methylindole-3-carboxaldehyde with thiophene-3-acetonitrile. The product assumes an approximately planar Z configuration. The molecule has a thienyl-ring flip disorder.
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Background: Gibberellic acid (GBA) is a naturally occurring and commercially produced plant growth regulator which may cause a variety of effects including the stimulation of seed germination in some cases. Histochemical changes in testicular tissue including carbohydrates, lipids and alkaline phosphatase enzyme changes were evaluated. Materials and Methods: Twenty seven mature male rats after ...
متن کاملSalt-specific effects observed in calorimetric studies of alkali and tetraalkylammonium salt solutions of poly(thiophen-3-ylacetic acid).
The enthalpies of dilution ΔHdil of aqueous solutions of a conjugated polyelectrolyte, poly(thiophen-3-ylacetic acid), neutralized by lithium, sodium, cesium, tetramethyl-, tetraethyl-, tetrapropyl-, and tetrabutylammonium hydroxides, were determined in the concentration range from cp = 2 × 10(-3) to 1 × 10(-1) monomol dm(-3) and for T = 278.15, 298.15, and 318.15 K. At low concentrations the d...
متن کاملInfluence of counterions on the conformation of conjugated polyelectrolytes: the case of poly(thiophen-3-ylacetic acid).
The addition of simple salt to a solution of conjugated polyelectrolyte can lead to substantial changes in its optical properties caused by the conformational change of the polymer chain. The effect of the addition of alkali metal and tetraalkylammonium chlorides to solutions of lithium salt of poly(thiophen-3-ylacetic acid) is investigated by NMR. The fractions of free alkali metal counterions...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section E Structure Reports Online
سال: 2011
ISSN: 1600-5368
DOI: 10.1107/s1600536811035823