@book{OPUS4-20533, title = {Einfache Experimente}, editor = {Duvinage, Brigitte}, year = {1999}, language = {de} } @book{OPUS4-27556, title = {Chemie : Lehrbuch f{\"u}r die Sekundarstufe II ; Gymnasium/Gesamtschule ; Allgemeine Chemie, organische Chemie}, editor = {Barthel, Helmut and Henning, Helmut and Kleinpeter, Erich and Ludwig, Eberhard and Uhlemann, Erhard and Barthel, Helmut}, publisher = {Volk und Wissen}, address = {Berlin}, pages = {224 S.}, year = {1995}, language = {de} } @book{OPUS4-27192, title = {Chemie : Lehrbuch f{\"u}r die Sekundarstufe II ; Gymnasium/Gesamtschule ; Allgemeine Chemie, organische Chemie ; L{\"o}sungen}, editor = {Barthel, Helmut and Henning, Helmut and Kleinpeter, Erich and Ludwig, Eberhard and Uhlemann, Erhard and Barthel, Helmut}, publisher = {Volk und Wissen}, address = {Berlin}, pages = {40 S.}, year = {1995}, language = {de} } @article{OPUS4-10587, title = {DFT-GIAO-NBO and 13C NMR study of the delta-syn-axial effect in 2,4-disubstituted adamantanes}, issn = {0749-1581}, doi = {10.1002/Mrc.2333}, year = {2008}, abstract = {Six groups of diastereomeric 2,4-disubstituted adamantanes were studied with DFT-GIAO-NBO (natural orbital analysis) methods. The calculated 13C chemical shifts reproduce well the experimental data. It was found that among all diastereomers, those bearing substituents in -syn-axial positions showed the largest overall deshielding, i.e. the sum of all 13C chemical shifts [;;(13C)] was the greatest and also had the highest delocalization contribution to the molecular energy evaluated with NBO. The higher delocalization energy is proposed to be the origin of the deshielding -syn-axial effect}, language = {en} } @article{OPUS4-10769, title = {Synthesis and conformational analysis of phenyl-substituted 1,3,2-oxazaphosphino[4,3-a]- and 1,2,3- oxathiazino[4,3-a]isoquinolines}, year = {2008}, abstract = {Through the ring closures of tetrahydroisoquinoline 1,3-amino alcohols bearing a phenyl group in the side- chain, diastereomers of novel 1- or 2-phenyl-substituted 1,3,2-oxazaphosphino[4,3-a]isoquinoline 4-oxides, and 1,2,3- oxathiazino[4,3-a]isoquinoline 4-oxides and 4,4-dioxides were prepared. NMR analysis and DFT calculations on the prepared tetrahydroisoquinoline-condensed 1,2,3-heterocycles revealed that their conformational equilibria of cis1-trans-cis2 type are influenced by the relative configuration of P-4 in the 1,3,2-oxazaphosphinanes, and by the position of the phenyl group in the 1,2,3-oxathiazines.}, language = {en} }