| Conţinutul numărului revistei |
| Articolul precedent |
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 SM ISO690:2012DRAGUTA, Sergiu, FONARI, Marina, BEJAGAM, Shabari Nath, STORMS, Kathryn, LINDLINE, Jennifer, TIMOFEEVA, Tatiana. Structural similarities and diversity in a series of crystalline solids composed of 2-aminopyridines and glutaric acid. In: Structural Chemistry, 2016, nr. 4(27), pp. 1303-1315. ISSN 1040-0400. DOI: https://doi.org/10.1007/s11224-016-0781-2 |
| EXPORT metadate: Google Scholar Crossref CERIF DataCite Dublin Core |
 Structural Chemistry |
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| Numărul 4(27) / 2016 / ISSN 1040-0400 /ISSNe 1572-9001 | ||||||
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| DOI:https://doi.org/10.1007/s11224-016-0781-2 | ||||||
| Pag. 1303-1315 | ||||||
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A solvent co-crystallization of three 2-aminopyridine derivatives, 2-aminopyridine (AP), 2-amino-6-methylpyridine (AMP), and 2,6-diaminopyridine (DAP) with the odd-membered propane-1,3-dicarboxylic acid (C5H12O4 = GAH2, glutaric acid) resulted in six ionic crystalline products, (HAP)(GAH) (1), (HAMP)(GAH) (2, 3), (HDAP)(GAH) (4), (HDAP)2(GA) (5), and (HDAP)2(DAP)(GA)(EtOH) (6, EtOH = ethanol). New compounds were characterized by single-crystal and powder X-ray diffraction, melting points, and IR spectra. The proton transfer to the pyridine nitrogen atom in all compounds and the location of H-atom in the carboxylic group in the hydrogen glutarate anion in binary adducts 1–4 was determined reliably from the low-temperature X-ray experiments. All compounds adopt the recurring R2 2(8) 2-aminopyridine–carboxylic acid heteromeric supramolecular synthon. The aggregation of hydrogen glutarate anions in the C(8) chain motifs in 1–4 occurs via the homomeric COOH···COO− robust pattern. Adducts 2 and 3 represent conformational polymorphs; adducts 4, 5 and 6 reveal the diversity in the components’ forms (ionic and neutral), acid–base ratios (1:1, 1:2, and 1:3), and hydrogen-bonding systems. This work demonstrates the variety of forms of glutaric acid in the H-bonded adducts. |
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| Cuvinte-cheie 2-Aminopyridine, Crystal engineering, Glutaric acid, Hydrogen bonds |
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Dublin Core Export
<?xml version='1.0' encoding='utf-8'?> <oai_dc:dc xmlns:dc='http://purl.org/dc/elements/1.1/' xmlns:oai_dc='http://www.openarchives.org/OAI/2.0/oai_dc/' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:schemaLocation='http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd'> <dc:creator>Draguta, S.</dc:creator> <dc:creator>Fonari, M.S.</dc:creator> <dc:creator>Bejagam, S.</dc:creator> <dc:creator>Storms, K.</dc:creator> <dc:creator>Lindline, J.</dc:creator> <dc:creator>Timofeeva, T.V.</dc:creator> <dc:date>2016-08-01</dc:date> <dc:description xml:lang='en'><p> </p><p>A solvent co-crystallization of three 2-aminopyridine derivatives, 2-aminopyridine (AP), 2-amino-6-methylpyridine (AMP), and 2,6-diaminopyridine (DAP) with the odd-membered propane-1,3-dicarboxylic acid (C<sub>5</sub>H<sub>12</sub>O<sub>4</sub> = GAH<sub>2</sub>, glutaric acid) resulted in six ionic crystalline products, (HAP)(GAH) (1), (HAMP)(GAH) (2, 3), (HDAP)(GAH) (4), (HDAP)<sub>2</sub>(GA) (5), and (HDAP)<sub>2</sub>(DAP)(GA)(EtOH) (6, EtOH = ethanol). New compounds were characterized by single-crystal and powder X-ray diffraction, melting points, and IR spectra. The proton transfer to the pyridine nitrogen atom in all compounds and the location of H-atom in the carboxylic group in the hydrogen glutarate anion in binary adducts 1–4 was determined reliably from the low-temperature X-ray experiments. All compounds adopt the recurring R<sub>2</sub> <sup>2</sup>(8) 2-aminopyridine–carboxylic acid heteromeric supramolecular synthon. The aggregation of hydrogen glutarate anions in the C(8) chain motifs in 1–4 occurs via the homomeric COOH···COO<sup>−</sup> robust pattern. Adducts 2 and 3 represent conformational polymorphs; adducts 4, 5 and 6 reveal the diversity in the components’ forms (ionic and neutral), acid–base ratios (1:1, 1:2, and 1:3), and hydrogen-bonding systems. This work demonstrates the variety of forms of glutaric acid in the H-bonded adducts.</p></dc:description> <dc:identifier>10.1007/s11224-016-0781-2</dc:identifier> <dc:source>Structural Chemistry 27 (4) 1303-1315</dc:source> <dc:subject>2-Aminopyridine</dc:subject> <dc:subject>Crystal engineering</dc:subject> <dc:subject>Glutaric acid</dc:subject> <dc:subject>Hydrogen bonds</dc:subject> <dc:title>Structural similarities and diversity in a series of crystalline solids composed of 2-aminopyridines and glutaric acid</dc:title> <dc:type>info:eu-repo/semantics/article</dc:type> </oai_dc:dc>
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