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0025718 - ÚACH 2006 RIV CZ eng J - Journal Article
Holub, Josef - Bakardjiev, Mario - Štíbr, Bohumil
The synthesis of 10-halo-substituted derivatives of nido-7,8,9-PC2B8H11 and [nido-7,8,9-PC2B8H10]- and new linear correlations between NMR parameters.
[Syntéza 10-halogensubstituovaných derivátů nido-7,8,9-PC2B8H11 a [nido-7,8,9-PC2B8H10]- a nové lineární korelace mezi NMR parametry.]
Collection of Czechoslovak Chemical Communications. Roč. 70, č. 11 (2005), s. 1861-1872. ISSN 0010-0765
R&D Projects: GA MŠMT(CZ) LC523
Institutional research plan: CEZ:AV0Z40320502
Keywords : boron * carboranes * borane cluster
Subject RIV: CA - Inorganic Chemistry
Impact factor: 0.949, year: 2005

Halogenation of the eleven-vertex phosphadicarbaborane nido-7,8,9-PC2B8H10 (1) with CCl4, Br2 or I2 in the presence of anhydrous AlCl3 (solvents CCl4, CS2, and benzene, respectively) generated a series of 10-X-nido-7,8,9-PC2B8H10 (10-X-1) compounds (X = Cl, Br, and I) in yields 55, 65, and 63%, respectively. Anionic compounds [10-X-nido-7,8,9-PC2B8H10]- (10-X-2) (X = Cl, Br, I) were obtained by treatment of the corresponding neutral compounds with "proton sponge" (PS = 1,8-bis(dimethylamino)naphthalene). Interesting halo-substitution NMR effects are also discussed in terms of new linear correlations. All the changes in NMR chemical shifts (D) induced at the various skeletal sites by halogeno substituents on specific sites can be related to an arbitrary reference skeleton and are, within experimental errors, linearly proportional to those induced at the substituted site (Da) of the reference skeleton.

Halogenační reakce nido-7,8,9-PC2B8H11 vedly k isolaci halogenderivátů 10-X-nido-7,8,9-PC2B8H10 (X = Cl, Br, I), jejichž reakce s „protonovou houbou“ (1,8-bis-(dimethylaminonaftalen)) vede ke vzniku aniontů obecné konstituce [10-X-nido-7,8,9-PC2B8H9]-. Na těchto sloučeninách byly demonstrovány nové lineární korelace mezi chemickými posuny na substituovaném B-atomu a podobnými charakteristikami jiných boranových skeletů.
Permanent Link: http://hdl.handle.net/11104/0116081
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0358159 - ÚBO 2011 RIV NL eng J - Journal Article
Mucci, N. - Arrendal, J. - Ansorge, H. - Bailey, M. - Bodner, M. - Delibes, M. - Ferrando, A. - Fournier, P. - Fournier, C. - Godoy, J. A. - Hájková, Petra - Hauer, S. - Heggberget, T. M. - Heidecke, D. - Kirjavainen, H. - Krueger, H.-H. - Kvaloy, K. - Lafontaine, L. - Lanszki, J. - Lemarchand, C. - Liukko, U.-M. - Loeschcke, V. - Ludwig, G. - Madsen, A. B. - Mercier, L. - Ozolins, J. - Paunovic, M. - Pertoldi, C. - Piriz, A. - Prigioni, C. - Santos-Reis, M. - Luis, T. S. - Stjernberg, T. - Schmid, H. - Suchentrunk, F. - Teubner, J. - Tornberg, R. - Zinke, O. - Randi, E.
Genetic diversity and landscape genetic structure of otter (Lutra lutra) populations in Europe.
Conservation Genetics. Roč. 11, č. 2 (2010), s. 583-599. ISSN 1566-0621. E-ISSN 1572-9737
R&D Projects: GA MŽP SP/2D4/16/08
Keywords : Eurasian otter * Mitochondrial DNA * Microsatellites * Bayesian clustering * Spatial genetic structure * Landscape genetics
Subject RIV: EG - Zoology
Impact factor: 1.255, year: 2010

We present the results of a survey performed on 616 samples, collected from 19 European countries, genotyped at the mtDNA control-region and 11 autosomal microsatellites. The mtDNA variability was low, suggesting that extant otter mtDNA lineages originated recently. A star-shaped mtDNA network did not allow outlining any phylogeographic inference. Microsatellites were only moderately variable; the average allele number was low, suggesting small historical effective population size. Extant otters likely originated from the expansion of a single refugial population. Bayesian clustering and landscape genetic analyses however indicate that local populations are genetically differentiated, perhaps as consequence of post-glacial demographic fluctuations and recent isolation. These results delineate a framework that should be used for implementing conservation programs in Europe, particularly if they are based on the reintroduction of wild or captive-reproduced otters.
Permanent Link: http://hdl.handle.net/11104/0196264