Výsledky vyhledávání - "S Heřmánek"

NMR as a tool for elucidation of structures and estimation of electron distribution in boranes and their derivatives

Autor: S Heřmánek

Publikováno v: Inorganica Chimica Acta. 289:20-44

The scope of boron-containing cluster compounds, their importance, short history, and the progress in measuring 11B NMR spectra is discussed. Information available from 11B, 1H and 13C NMR spectra is provided, as are the techniques for obtaining them

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::60c11960188b454bb1b2439daba52882
https://doi.org/10.1016/s0020-1693(99)00055-9

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27Al NMR spectroscopy of ethylaluminum halides

Autor: Z. , J. Macá, J. Fusek, S. Heřmánek, O. Kří, B.

Publikováno v: Journal of Organometallic Chemistry. 402:139-144

27Al NMR data for the dimeric compounds of the (Et3-nAlXn)2 type (n = 0-3; X = Cl, Br and I) have been determined. A characteristic U-shaped relationship between the 27Al NMR chemical shift and the value of n was found, together with a correlation be

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e580bbaa669ec015927fdf1a77d8c263
https://doi.org/10.1016/0022-328x(91)83057-b

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A convincing evidence of the S+ charge in SB11H11 and its derivatives

Autor: V. Všetečka, J. Macháck, Drahomír Hnyk, S. Heřmánek

Publikováno v: Contemporary Boron Chemistry ISBN: 9780854048359

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a44352d8ecba9be6fb414cd584bc4207
https://doi.org/10.1039/9781847550644-00155

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Chemistry of Boranes. XXXV. Correlation of Some11B NMR Chemical Signals with Structure Factors in nido-Boranes and their Derivatives

Autor: S. Heřmánek, J. Plešek

Publikováno v: Zeitschrift f�r anorganische und allgemeine Chemie. 409:115-120

Empirical rules are presented which can help to assign 11B signals occurring a t the low- and high-field part of the NMR spectrum of nido-boron hydrides and allow to predict tautomerism or prefer one of the possible tautomeric forms. Chemie der Boran

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f7b520f305068dc20922e85382a5f7cc
https://doi.org/10.1002/zaac.19744090114

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ESCA-Untersuchungen an einem neuen Typ von intramolekular-interligand-verbr�ckten Kobaltocarboranen

Autor: H. Binder, S. Heřmánek, E. Fluck, J. Plešek

Publikováno v: Zeitschrift f�r anorganische und allgemeine Chemie. 433:26-34

Die Rontgen-Photoelektronenspektren von intramolekular-interligand-verbruckten Kobaltocarboranen werden mitgeteilt und diskutiert. ESCA Investigations on a New Type of Intramolecular Interligand Bridged Cobaltocarboranes The X-ray photoelectron spect

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a70ee74fb9595339ce470da56910d80d
https://doi.org/10.1002/zaac.19774330104

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Nido-heteroboranes

Autor: B. Stibr, Karel Base, J. Plešek, S. Heřmánek, Jiří Dolansky, Z. Janousek

Publikováno v: Pure and Applied Chemistry. 49:803-811

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e4f0e41d0c962862a8d0008f1731d774
https://doi.org/10.1351/pac197749060803

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The intermediate dicarba-nido-boranes

Autor: S. Heřmánek, J. Plešek

Publikováno v: Pure and Applied Chemistry. 39:431-454

The formation of several nido-carboranes, their structures, chemistry, some comparisons with nido-boranes and general stability rules are briefly reviewed. Oxidation of the 7,8-C2B9H2 anion was found to afford selectively various new nido-carboranes,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a3355287833c0b573207567d2f3114d1
https://doi.org/10.1351/pac197439040431

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