Source:http://linkedlifedata.com/resource/pubmed/id/19578271
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
Pt 7
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| pubmed:dateCreated |
2009-7-6
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| pubmed:abstractText |
p-Phenylenebis(2-oxo-3-phenyl-1,2-dihydropyrido[1,2-a]pyrimidin-5-ium-4-olate), C(34)H(22)N(4)O(4), is a bis-mesoionic yellow pigment that shows fluorescence in the solid state. During a polymorph screening, single crystals of three solvates were grown and their crystal structures determined. Solvent-free crystals were not obtained. A solvate with N-methylpyrrolidone (NMP) and propan-2-ol, C(34)H(22)N(4)O(4).2C(5)H(9)NO.C(3)H(8)O, (Ia), and an NMP trisolvate, C(34)H(22)N(4)O(4).3C(5)H(9)NO, (Ib), crystallize with pigment molecules on inversion centres. The NMP/propan-2-ol mixed solvate (Ia) forms O-H...O hydrogen bonds between the different solvent molecules. In both structures, at least one of the solvent molecules is disordered. A third solvate structure, C(34)H(22)N(4)O(4).0.5C(5)H(9)NO.C(4)H(10)O, (Ic), was obtained by crystallization from NMP and butan-1-ol. In this case, there are two symmetry-independent pigment molecules, both situated on inversion centres. The solvent molecules are heavily disordered and their contribution to the scattering was suppressed. This solvate displays a channel structure, whereas the other two solvates form layer structures.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
Jul
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| pubmed:issn |
1600-5759
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| pubmed:author | |
| pubmed:issnType |
Electronic
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| pubmed:volume |
65
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
o352-6
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| pubmed:year |
2009
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| pubmed:articleTitle |
Three solvates of a bis-mesoionic fluorescent yellow pigment.
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| pubmed:affiliation |
Institute of Inorganic and Analytical Chemistry, Goethe-University Frankfurt, Max-von-Laue-Strasse 7, 60438 Frankfurt am Main, Germany.
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| pubmed:publicationType |
Journal Article
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