Linked Life Data

19355747

Source:http://linkedlifedata.com/resource/pubmed/id/19355747

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
13
pubmed:dateCreated
2009-4-9
pubmed:abstractText
Hydrogen cyanide polymerizes readily under a variety of conditions and significant prebiotic roles have been suggested for these polymers due to the abundance of HCN in universe. However, the structures of HCN polymers have been more speculative than grounded in experimental data. Here we show that (13)C and (15)N solid state NMR spectra of polymers formed in neat HCN are inconsistent with the previously proposed structures and suggest instead that the polymers are formed by simple monomer addition, first in head-to-tail fashion to form linear, conjugated chains, and then laterally to form saturated two-dimensional networks. This interpretation of the NMR spectra finds support in other information about the polymerization of neat HCN, including the presence of free radicals. As expected from the literature, formation of the HCN tetramer, diaminomaleonitrile, is also observed, but only when the reaction is catalyzed exclusively by base and then in crystalline form.
pubmed:grant
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/19355747-11539263, http://linkedlifedata.com/resource/pubmed/commentcorrection/19355747-11541961, http://linkedlifedata.com/resource/pubmed/commentcorrection/19355747-12797793, http://linkedlifedata.com/resource/pubmed/commentcorrection/19355747-14577881, http://linkedlifedata.com/resource/pubmed/commentcorrection/19355747-16590977, http://linkedlifedata.com/resource/pubmed/commentcorrection/19355747-170680, http://linkedlifedata.com/resource/pubmed/commentcorrection/19355747-17443870, http://linkedlifedata.com/resource/pubmed/commentcorrection/19355747-17443871, http://linkedlifedata.com/resource/pubmed/commentcorrection/19355747-21452, http://linkedlifedata.com/resource/pubmed/commentcorrection/19355747-218287, http://linkedlifedata.com/resource/pubmed/commentcorrection/19355747-31491, http://linkedlifedata.com/resource/pubmed/commentcorrection/19355747-5230134, http://linkedlifedata.com/resource/pubmed/commentcorrection/19355747-7253037
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
1089-7690
pubmed:author
pubmed:issnType
Electronic
pubmed:day
7
pubmed:volume
130
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
134503
pubmed:dateRevised
2010-9-27
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
HCN polymers characterized by solid state NMR: chains and sheets formed in the neat liquid.
pubmed:affiliation
Department of Chemistry, Brandeis University, Waltham, Massachusetts 02454-9110, USA.
pubmed:publicationType
Journal Article, Research Support, N.I.H., Extramural