Linked Life Data

15876720

Source:http://linkedlifedata.com/resource/pubmed/id/15876720

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
Pt 5
pubmed:dateCreated
2005-5-6
pubmed:abstractText
The room-temperature crystal structure of 5-butyl-5-ethylbarbituric acid (generally known as butobarbitone), C10H16N2O3, was reported in space group C2/c [Bideau (1971). C. R. Acad. Sci. Paris Ser. C, 272, 757-760]. A redetermination at 120 K using synchrotron radiation shows the space group at this temperature to be P2(1)/n and not C2/c. There are two crystallographically independent molecules in the asymmetric unit, but no solvent. Reported issues concerning possible disorder of the molecule are addressed; the butyl substituent of one of the molecules adopts an unusual conformation in being not fully extended. A subsequent re-collection at room temperature shows that the space group is indeed C2/c (A2/a with the axes selected in this report), and so the crystal structure undergoes a phase change upon cooling to 120 K.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0108-2701
pubmed:author
pubmed:issnType
Print
pubmed:volume
61
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
o297-9
pubmed:dateRevised
2009-9-25
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
5-Butyl-5-ethylbarbituric acid: a phase transition at low temperature.
pubmed:affiliation
School of Natural Sciences (Chemistry), Bedson Building, University of Newcastle, Newcastle upon Tyne NE1 7RU, England.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't