Zobrazit minimální záznam
dc.contributor.author |
Drabina, Pavel |
|
dc.contributor.author |
Valenta, Petr |
|
dc.contributor.author |
Jansa, Petr |
|
dc.contributor.author |
Růžička, Aleš |
|
dc.contributor.author |
Hanusek, Jiří |
|
dc.contributor.author |
Sedlák, Miloš |
|
dc.date.accessioned |
2010-10-18T08:18:05Z |
|
dc.date.available |
2010-10-18T08:18:05Z |
|
dc.date.issued |
2008 |
|
dc.identifier.issn |
0277-5387 |
|
dc.identifier.uri |
http://hdl.handle.net/10195/37723 |
|
dc.description.abstract |
New chiral N,N-bidentate 2,2′-bis-(4-isopropyl-4-methyl-4,5-dihydro-1H-imidazol-5-one) ligands have been prepared and characterised by their 1H and 13C NMR spectra and/or optical rotation. The ligands prepared were then tested for their ability to form complexes with copper(II) salts. It was found that the most stable complex is formed from the 2,2′-bis-(4-isopropyl-1,4-dimethyl-4,5-dihydro-1H-imidazol-5-one) ligand and copper(II) chloride. The structure of this complex was determined by means of quantum-chemical computations at the B3LYP or UB3LYP/6-31G(d,p) level. According to the computations, the geometry of the copper atom most resembles a tetrahedral arrangement, which was also confirmed by means of X-ray structural analysis. It was found that the structure of this copper(II) complex does not allow the copper atom to coordinate to additional ligands; therefore, it is catalytically inactive in the asymmetric Henry reaction. |
eng |
dc.format |
p. 268-274 |
eng |
dc.language.iso |
eng |
|
dc.publisher |
Elsevier |
cze |
dc.relation.ispartof |
Polyhedron. 2008, vol. 27, issue 1 |
eng |
dc.rights |
open access |
eng |
dc.subject |
Nitrogen bidentate ligands |
eng |
dc.subject |
4,5-Dihydro-1H-imidazol-5-ones |
eng |
dc.subject |
Copper(II) complexes |
eng |
dc.subject |
B3LYP/6-31G(d,p) |
eng |
dc.subject |
Asymmetric catalysis |
eng |
dc.title |
Copper(II) complexes derived from substituted 2,2 '-bis-(4-isopropyl-4-methyl-4,5-dihydro-1H-imidazol-5-one) ligands: Synthesis, structure and catalytic activity |
eng |
dc.type |
Article |
eng |
dc.peerreviewed |
yes |
eng |
dc.publicationstatus |
postprint |
eng |
dc.identifier.doi |
10.1016/j.poly.2007.09.018 |
|
dc.relation.publisherversion |
http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TH8-4R1FSJ6-2&_user=640852&_coverDate=01%2F20%2F2008&_rdoc=1&_fmt=high&_orig=search&_origin=search&_sort=d&_docanchor=&view=c&_acct=C000032310&_version=1&_urlVersion=0&_userid=640852&md5=68b3ae359a54a60233a4ed0758e5ee71&searchtype=a |
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