Zobrazeno 1 - 10 of 22 pro vyhledávání: '"Petra Krieger-Beck"'
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Akademický článek
Crystal structure of the charge-transfer complex 2-(1,2,3,4-tetrahydronaphthalen-1-ylidene)hydrazinecarbothioamide–pyrazine-2,3,5,6-tetracarbonitrile (2/1)
Autor: Johannes Beck, Jörg Daniels, Petra Krieger-Beck, Gertrud Dittmann, Adriano Bof de Oliveira
Publikováno v: Acta Crystallographica Section E, Vol 70, Iss 10, Pp o1090-o1091 (2014)
The reaction of 2-(1,2,3,4-tetrahydronapthalen-1-ylidene)hydrazinecarbothioamide (TTSC) with pyrazine-2,3,5,6-tetracarbonitrile (tetracyanopyrazine, TCNP) yields the title 2:1 charge-transfer adduct, 2C11H12N3S·C6N8. The complete TCNP molecule is ge
Externí odkaz: https://doaj.org/article/758f7116da284e6dbc3a992a1e9bdf36
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3
Carbon subsulfide C3S2 – synthesis by flash vacuum pyrolysis and crystal structure determination
Autor: Jörg Daniels, Petra Krieger-Beck, Johannes Beck
Publikováno v: Zeitschrift für Naturforschung B. 75:997-1004
Carbon subsulfide C3S2 can be produced on a preparative scale by flash vacuum pyrolysis (FVP). The precursor 5-(methylthio)-3H-1,2-dithiole-3-thione (C4H4S4) proved to be particularly suitable and yields up to 8% could be achieved on evaporation at T
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c5c3094eb7b2eb279a089335ed6434f6
https://doi.org/10.1515/znb-2020-0149
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4
The Squaric Acid Derivatives C8O4S2 and C8O4Se2 – Crystal Structures, Explosive Thermal Behavior and the Preparation of Carbon Suboxide Selenide OC3Se by Flash Vacuum Pyrolysis
Autor: Klemens Kelm, Petra Krieger-Beck, Johannes Beck
Publikováno v: Zeitschrift für Naturforschung B. 61:123-132
2,7-Diselenatricyclo[6.2.0.03.6]deca-1,3-diene-4,5,9,10-tetraone, C8O4Se2, was prepared from 1,2-diselenosquarate and squaric acid dichloride. Its crystal structure and the structure of the already known sulfur analogue C8O4S2 were determined (C8O4S2
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::55d810f8bf1441dd2506bcccf784bb7d
https://doi.org/10.1515/znb-2006-0202
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5
The Structure of Poly(carbonsuboxide) on the Atomic Scale: A Solid-State NMR Study
Autor: Jörn Schmedt auf der Günne, Petra Krieger-Beck, Wilfried Hoffbauer, Johannes Beck
Publikováno v: Chemistry - A European Journal. 11:4429-4440
In this contribution we present a study of the structure of amorphous poly(carbonsuboxide) (C3O2)x by 13C solid-state NMR spectroscopy supported by infrared spectroscopy and chemical analysis. Poly(carbonsuboxide) was obtained by polymerization of ca
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0ae18e072064cf9a36749d8a9ebb896d
https://doi.org/10.1002/chem.200401133
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8
Acid-catalyzed reactions of six- and seven-membered cyclic hemiperacetals and peracetals and of related bicyclic ozonides
Autor: Petra Krieger-Beck, Gilbert Kiesel, Henri Mertens, Henning Henke, Karl Griesbaum
Publikováno v: Canadian Journal of Chemistry. 72:2198-2204
HCl-catalyzed reactions of the hemiperacetals 3-methoxy-3-methyl-7-hydroxy-1,2-dioxepane (1a) and 3-methoxy-3-methyl-6-hydroxy-1,2-dioxane (1b) and of the related ozonides 1-methyl-6,7,8-trioxabicyclo[3.2.1]octane (2a) and 1-methyl-5,6,7-trioxabicycl
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4b1c90173a88d08a97ee8e8458cf361c
https://doi.org/10.1139/v94-280
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9
Ozonolysis of cyclopentadiene derivatives. Competitive participation of [3 + 2] and [3 + 4] cycloadditions of carbonyl oxide moieties to α,β- unsaturated carbonyl groups
Autor: In Chan Jung, Hideyuki Yamakoshi, M. Mori, Masatomo Nojima, Petra Krieger-Beck, Karl Griesbaum, Kevin J. McCullough, Shigekazu Kusabayashi
Publikováno v: J. Chem. Soc., Perkin Trans. 1. :1335-1343
Reactions between cyclopenta-1, 3-dienes 1a–i and ozone, conducted in a variety of solvents including diethyl ether, pentane, CCl4, CH2Cl2, CF3CH2OH, AcOH, and MeOH, afforded predominantly monomeric ozonolysis products consisting of either bicyclic
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0975aa74044dd01a3ae9c7b11cd7b63b
https://doi.org/10.1039/p19930001335
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10
Crystal structure of the charge-transfer complex 2-(1,2,3,4-tetrahydronaphthalen-1-ylidene)hydrazinecarbothioamide–pyrazine-2,3,5,6-tetracarbonitrile (2/1)
Autor: Jörg Daniels, Petra Krieger-Beck, Dittmann G, de Oliveira Ab, Johannes Beck
Publikováno v: Acta Crystallographica Section E: Structure Reports
Acta Crystallographica Section E, Vol 70, Iss 10, Pp o1090-o1091 (2014)
The reaction of 2-(1,2,3,4-tetrahydronapthalen-1-ylidene)hydrazinecarbothioamide (TTSC) with pyrazine-2,3,5,6-tetracarbonitrile (tetracyanopyrazine, TCNP) yields the title 2:1 charge-transfer adduct, 2C11H12N3S·C6N8. The complete TCNP molecule is ge
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7e1a53ba2f8e78cfe72f597c23d5c192
https://doi.org/10.1107/s1600536814019795
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