| Face-to-face stacking of quinoid rings of alkali salts of bromanilic acid. | |
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MedLine Citation:
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PMID: 22267558 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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A series of alkali salts of hydrogen bromanilic acid trihydrates (K(+), Rb(+) and Cs(+), potassium, rubidium and caesium 2,5-dibromo-4-hydroxy-3,6-dioxocyclohexa-1,4-dien-1-olate trihydrate), bromanilic acid tetrahydrate (Na(+), disodium 2,5-dibromo-3,6-dioxocyclohexa-1,4-diene-1,4-diolate tetrahydrate) and bromanilic acid dihydrates (K(+), Rb(+) and Cs(+), dipotasium, dirubidium and dicaesium 2,5-dibromo-3,6-dioxocyclohexa-1,4-diene-1,4-diolate dihydrate) were prepared and studied by single-crystal X-ray diffraction. Their crystal packings are dominated by quinoid ring stacking. The monoanionic quinoid rings pack face-to-face without offset and with short centroid separations (3.25-3.30 Å), while the dianionic rings form offset stacks (1.4-1.8 Å) with a larger centroid separation (3.8-4.1 Å). |
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Authors:
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Krešimir Molčanov; Biserka Kojić-Prodić |
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Publication Detail:
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Type: Journal Article Date: 2012-01-06 |
Journal Detail:
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Title: Acta crystallographica. Section B, Structural science Volume: 68 ISSN: 1600-5740 ISO Abbreviation: Acta Crystallogr., B Publication Date: 2012 Feb |
Date Detail:
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Created Date: 2012-01-23 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8403252 Medline TA: Acta Crystallogr B Country: United States |
Other Details:
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Languages: eng Pagination: 57-65 Citation Subset: IM |
Affiliation:
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Rudjer Bošković Institute, PO Box 180, HR-10002 Zagreb, Croatia. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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