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| 1. |
Metallclusterverbindungen Chemie und Bedeutung;Homogene und heterogene Katalyse |
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Zeitschrift für Chemie,
Volume 29,
Issue 4,
1989,
Page 117-129
Bernhard Walther,
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摘要:
AbstractThe interest in transition metal cluster catalysis has developed tremendously over the past decade because of the potential benefits metal cluster compounds may provide over traditional catalysts. Although these expectations have not been met yet transition metal cluster catalysis has offered many insights into the phenomenon of catalysis and still remains the most important driving force of the metal cluster chemistry. This part of the review on transition metal cluster compounds deals with the homogeneous and heterogeneous catalysis by such compounds.
ISSN:0044-2402
DOI:10.1002/zfch.19890290402
出版商:Wiley‐VCH Verlag GmbH&Co. KGaA
年代:1989
数据来源: WILEY
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| 2. |
Struktur und Aggregation von Dimethylammonium‐dimethylcarbamat (Dimcarb) und analogen Dialkylammonium‐dialkylcarbamaten |
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Zeitschrift für Chemie,
Volume 29,
Issue 4,
1989,
Page 129-135
Werner Schroth,
Hans‐Dieter Schädler,
Jörg Andersch,
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摘要:
AbstractIn the wide range of carbamic acid derivatives, dialkylammonium‐dialkylcarbamates receive an exceptional position concerning their structure, molecular aggregation, and thermal behaviour. Among them the first member of this series, dimethylammonium‐dimethylcarbamate, briefly called dimcarb, represents a distillable liquid and claims additional interest in view of preparative utilizations. Its unusual properties have been investigated with regard to other ammonium‐carbamates, resulting in some remarkable conclusions by means of different physical methods. Thus, dimcarb is highly structured in dependence on temperature (viscosimetry, refractometry, cryoscopy). Dimethylamine and carbondioxide are bonded only weakly by binding energies in the order of non‐specific solvation energies (caloric measurements). The ionic species are predominantly involved in contact ion pairs (conductivity) and display a dynamic behaviour along with different prototropic interactions including dimethylcarbamic acid (N M R spectra). Informations about favoured structure combinations are given (quantum chemical calculations, I R and Raman spectra, mass spectra). Altogether, the unusual properties of dimcarb are based on a flexible structure behaviour, sensitively influenced by external factors (temperature, medium, reaction pa
ISSN:0044-2402
DOI:10.1002/zfch.19890290403
出版商:Wiley‐VCH Verlag GmbH&Co. KGaA
年代:1989
数据来源: WILEY
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| 3. |
Eine weitere Synthesemöglichkeit zur Darstellung von 1,4‐Benzothiazin‐3(4H)‐onen: Chlorolyse disulfidischer α,β‐ungesättigter Carbonsäureanilide |
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Zeitschrift für Chemie,
Volume 29,
Issue 4,
1989,
Page 135-136
Manfred Mühlstädt,
Heike Franke,
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ISSN:0044-2402
DOI:10.1002/zfch.19890290404
出版商:Wiley‐VCH Verlag GmbH&Co. KGaA
年代:1989
数据来源: WILEY
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| 4. |
Synthese von Diamidophosphorsäureestern der Cellulose |
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Zeitschrift für Chemie,
Volume 29,
Issue 4,
1989,
Page 136-137
Matthias Schnabelrauch,
Barbara Kampa,
Dieter Klemm,
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ISSN:0044-2402
DOI:10.1002/zfch.19890290405
出版商:Wiley‐VCH Verlag GmbH&Co. KGaA
年代:1989
数据来源: WILEY
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| 5. |
Sulphur Analogues of Deoxyvasicinone;Reactions with Electrophiles |
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Zeitschrift für Chemie,
Volume 29,
Issue 4,
1989,
Page 137-138
Allan D. Dunn,
Robert Norrie,
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ISSN:0044-2402
DOI:10.1002/zfch.19890290406
出版商:Wiley‐VCH Verlag GmbH&Co. KGaA
年代:1989
数据来源: WILEY
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| 6. |
NMR‐spektroskopische Untersuchung von 2,4‐Dilsopropyl‐2,4‐dithioxo‐1,3,2λ5‐,4λ5‐dithiadiphosphetan |
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Zeitschrift für Chemie,
Volume 29,
Issue 4,
1989,
Page 138-139
Gisela Ohms,
Gisbert Großmann,
Berit Buchta,
Antje Treichler,
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ISSN:0044-2402
DOI:10.1002/zfch.19890290407
出版商:Wiley‐VCH Verlag GmbH&Co. KGaA
年代:1989
数据来源: WILEY
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| 7. |
NMR‐Untersuchungen zur Tautomerie bei Dihydroanthracendionen |
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Zeitschrift für Chemie,
Volume 29,
Issue 4,
1989,
Page 139-140
Thomas Heyer,
Hans‐Joachim Niclas,
Stephan Dietzel,
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ISSN:0044-2402
DOI:10.1002/zfch.19890290408
出版商:Wiley‐VCH Verlag GmbH&Co. KGaA
年代:1989
数据来源: WILEY
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| 8. |
Reaktionen aliphatischer Diazoverbindungen;Nachweis und Funktion tritylanaloger Radikale im Temperaturbereich 300‐600 K |
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Zeitschrift für Chemie,
Volume 29,
Issue 4,
1989,
Page 140-141
Jörn‐Uwe Thurner,
Reinhard Stößer,
Michael Lieberenz,
Bernd Hinzmann,
Ralf Donau,
Georg Tomaschewski,
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ISSN:0044-2402
DOI:10.1002/zfch.19890290409
出版商:Wiley‐VCH Verlag GmbH&Co. KGaA
年代:1989
数据来源: WILEY
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| 9. |
Organische Elektronenleiter und Vorstufen;Über die massenspektrometrische Bildung des Tri‐dithietylenradikalkations |
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Zeitschrift für Chemie,
Volume 29,
Issue 4,
1989,
Page 141-142
Andreas M. Richter,
Norbert Beye,
Egon Fanghänel,
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ISSN:0044-2402
DOI:10.1002/zfch.19890290410
出版商:Wiley‐VCH Verlag GmbH&Co. KGaA
年代:1989
数据来源: WILEY
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| 10. |
Zum Einfluß der Gegenionen und des Lösungsmittels auf die σ‐Akzeptorstärke von ausgewählten organischen Kationen |
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Zeitschrift für Chemie,
Volume 29,
Issue 4,
1989,
Page 142-143
Stefan Spange,
Günther Heublein,
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ISSN:0044-2402
DOI:10.1002/zfch.19890290411
出版商:Wiley‐VCH Verlag GmbH&Co. KGaA
年代:1989
数据来源: WILEY
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