Source:http://linkedlifedata.com/resource/pubmed/id/21754234
Switch to
| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
Pt 4
|
| pubmed:dateCreated |
2011-7-14
|
| pubmed:abstractText |
The asymmetric unit of the title compound, C(12)H(10)N(4)O(2), contains three half-mol-ecules. Each half-mol-ecule is completed by crystallographic inversion symmetry. The title compound, (I), is a polymorph of the structure, (II), reported by Hsu & Chen [Eur. J. Inorg. Chem. (2004), 1488-1493]. In the original report, the compound crystallized in the tetra-gonal space group P[Formula: see text]2(1)c (Z = 8), whereas the structure reported here is triclinic (P[Formula: see text], Z = 3). In both forms, each oxamide mol-ecule is almost planar (with maximum deviations are 0.266 and 0.166?Å) and the O atoms are trans oriented. The principal difference between the two forms lies in the different hydrogen-bonding patterns. In (I), two N-H?O and one N-H?N hydrogen bonds link the mol-ecules, forming a two-dimensional network, whereas in (II) there are no classical hydrogen bonds to O atoms and only weak C-H?O inter-actions are found along with rings of N-H?N bonds.
|
| pubmed:commentsCorrections | |
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
|
| pubmed:month |
Apr
|
| pubmed:issn |
1600-5368
|
| pubmed:author | |
| pubmed:issnType |
Electronic
|
| pubmed:day |
1
|
| pubmed:volume |
67
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
o972-3
|
| pubmed:dateRevised |
2011-11-11
|
| pubmed:year |
2011
|
| pubmed:articleTitle |
A triclinic polymorph with Z = 3 of N,N'-bis-(2-pyrid-yl)oxamide.
|
| pubmed:publicationType |
Journal Article
|