Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Volker Rüdiger"'
Autor:
Hans-Jörg Schneider, Volker Rüdiger
Publikováno v:
Chemistry - A European Journal. 6:3771-3776
Proton shielding variations in supramolecular complexes contain a wealth of information on complex geometries in solution that has been until now mostly neglected. We describe herein ways for such analyses with five cyclophane and two cyclodextrin co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a199cba68c8ca4c73c2b510410b4e44d
https://doi.org/10.1002/1521-3765(20001016)6:20<3771::aid-chem3771>3.0.co
https://doi.org/10.1002/1521-3765(20001016)6:20<3771::aid-chem3771>3.0.co
Autor:
Volker Rüdiger, Hans-Jörg Schneider
Publikováno v:
Magnetic Resonance in Chemistry. 38:85-89
A computer program SHIFT for evaluating NMR shielding variations on the basis of classical equations describing anisotropy, linear and square electric effects and also sterically induced charge separations is presented. Application of the program is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::90e373ec89858c260e41f2f710729efa
https://doi.org/10.1002/(sici)1097-458x(200002)38:2<85::aid-mrc600>3.0.co
https://doi.org/10.1002/(sici)1097-458x(200002)38:2<85::aid-mrc600>3.0.co
Autor:
O. A. Raevsky, Vladimir P. Kazachenko, Volker Rüdiger, Hans-Jörg Schneider, Vitally P. Solov'ev
Publikováno v:
European Journal of Organic Chemistry. 1999:1847-1856
Thermodynamics of 18-crown-6 complexes with ammonium cations (NH4, MeNH3, Me2NH2, Me3NH, Me4N, Et4N, PhNH3, and PhCH2NH3 ) in methanol were determined by titration calorimetry. The results show strong contributions from entropy terms counteracting th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c04428f5305e8e7222e46c1fc452758c
https://doi.org/10.1002/(sici)1099-0690(199908)1999:8<1847::aid-ejoc1847>3.0.co
https://doi.org/10.1002/(sici)1099-0690(199908)1999:8<1847::aid-ejoc1847>3.0.co
Autor:
N. N. Strakhova, Vladimir E. Baulin, Vitally P. Solov'ev, Frank Eblinger, Volker Rüdiger, Alexandr F. Solotnov, Vladimir P. Kazachenko, Hans-Jörg Schneider, Oleg A. Raevsky
Publikováno v:
European Journal of Organic Chemistry. 1998:1379-1389
Stability constants and enthalpy changes determined by calorimetric titrations and supported by selected NMR titrations are reported for the complexation of sodium and potassium cations with 18 different crown ethers containing nitrogen atoms with di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::05882301efa3d4ae5ee9e193295e4d66
https://doi.org/10.1002/(sici)1099-0690(199807)1998:7<1379::aid-ejoc1379>3.0.co
https://doi.org/10.1002/(sici)1099-0690(199807)1998:7<1379::aid-ejoc1379>3.0.co
Publikováno v:
Journal of Physical Organic Chemistry. 10:305-310
Complexation constants with the macrocyclic azoniacyclophane CP44 and phenyl guest compounds with at least four fluorine atoms or alternatively protons at the ring were obtained by NMR shift titrations in water. The fluorinated compounds show free en
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aae1629360164557ebcdfd0314db12d1
https://doi.org/10.1002/(sici)1099-1395(199705)10:5<305::aid-poc874>3.0.co
https://doi.org/10.1002/(sici)1099-1395(199705)10:5<305::aid-poc874>3.0.co
Publikováno v:
The Journal of Organic Chemistry. 61:5221-5226
A comprehensive study of complexation between potassium salts and 18-crown-6 in 14 different solvents shows stability constant K increases by >104 from water to pure methanol or to propylene carbonate (PC), with constants increasing in the order H2O
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0191ac50d03e9cf18301acb2f486ca9
https://doi.org/10.1021/jo952250h
https://doi.org/10.1021/jo952250h
Autor:
Alexey V. Eliseev, Andrew J. Meyer, Michael J. Blandamer, Volker Rüdiger, Svetlana Simova, Paul M. Cullis, Hans-Jörg Schneider
Publikováno v:
J. Chem. Soc., Perkin Trans. 2. :2119-2123
Inclusion modes in complexes with α- and β-cyclodextrins in water have been investigated by NMR spectroscopy at 400 or 500 MHz, and compared with structures obtained by computer-aided molecular modelling and with calorimetric data. The NOEs observe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9fca9bdd8966140f5ce4e8cfc0d3155
https://doi.org/10.1039/p29960002119
https://doi.org/10.1039/p29960002119
Publikováno v:
Journal of pharmaceutical sciences. 86(2)
Complex binding constants of the three native cyclodextrins with seven cyclohexane derivatives (all possessing the carboxylic acid group) and with the series C6H5(CH2)nCOOH (n = 0 to 4) were measured in aqueous solution at 25 degrees C by potentiomet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8caa11dbb9f18edf69dd8251647dfbd5
https://pubmed.ncbi.nlm.nih.gov/9040102
https://pubmed.ncbi.nlm.nih.gov/9040102