Source:http://linkedlifedata.com/resource/pubmed/id/20340114
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
17
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| pubmed:dateCreated |
2010-4-28
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| pubmed:abstractText |
A series of five complexes that incorporate the guanidinium ion and various deprotonated forms of Kemp's triacid (H(3)KTA) have been synthesized and characterized by single-crystal X-ray analysis. The complex [C(NH(2))(3)(+)].[H(2)KTA(-)] (1) exhibits a sinusoidal layer structure with a centrosymmetric pseudo-rosette motif composed of two ion pairs. The fully deprotonated Kemp's triacid moiety in 3 [C(NH(2))(3)(+)].[KTA(3-)] (2) forms a record number of eighteen acceptor hydrogen bonds, thus leading to a closely knit three-dimensional network. The KTA(3-) anion adopts an uncommon twist conformation in [(CH(3))(4)N(+)].2[C(NH(2))(3)(+)].[KTA(3-)].2H(2)O (3). The crystal structure of [(nC(3)H(7))(4)N(+)].2[C(NH(2))(3)(+)].[KTA(3-)] (4) features a tetrahedral aggregate of four guanidinium ions stabilized by an outer shell that comprises six equatorial carboxylate groups that belong to separate [KTA(3-)] anions. In 3 [(C(2)H(5))(4)N(+)].20[C(NH(2))(3)(+)].11[HKTA(2-)].[H(2)KTA(-)].17H(2)O (5), an even larger centrosymmetric inner core composed of eight guanidinium ions and six bridging water molecules is enclosed by a crust composed of eighteen axial carboxyl/carboxylate groups from six HKTA(2-) anions.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
May
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| pubmed:issn |
1521-3765
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| pubmed:author | |
| pubmed:issnType |
Electronic
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| pubmed:day |
3
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| pubmed:volume |
16
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
5078-88
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| pubmed:year |
2010
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| pubmed:articleTitle |
Controlled aggregation of multiple guanidinium ions through a hydrogen-bonded network assembly with deprotonated forms of Kemp's triacid.
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| pubmed:affiliation |
Department of Chemistry and Center of Novel Functional Molecules, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, P.R. China.
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| pubmed:publicationType |
Journal Article
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