Journal ArticleDOI
NMR kinetic investigation of the system norbornadiene-μ-dichloro dirhodium dinorbornadiene. Occurrence of a five-coordinated rhodium complex
H. C. Volger,H. Hogeveen +1 more
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TLDR
In this article, a new species, a five-coordinated rhodium dinorbornadiene chloride (RhN2Cl), was found in the NMR spectra.Abstract:
NMR spectra of solutions containing norbornadiene (N) and μ-dichloro dirhodium dinorbornadiene (Rh2N2Cl2) at low temperatures (< − 40°C) show the presence of a new species, a five-coordinated rhodium dinorbornadiene chloride (RhN2Cl). It is formed according to
Rh2N2Cl2 + 2 N ⇌ 2 RhN2Cl.
At higher temperatures (−40° to + 100°C) line broadening is observed, indicating the occurrence of rapid exchange processes. From the data the following mechanism is deduced: a slow reaction (by one or two steps) of the dimeric complex with one mole of N
Rh2N2Cl2 + N ⇌ RhN2Cl + RhNCl,
and a subsequent fast reaction yielding a second mole of RhN2Cl
RhNCl + N ⇌ RhN2Cl.read more
Citations
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Journal ArticleDOI
Norbornadiene-quadricyclane — an effective molecular system for the storage of solar energy
TL;DR: The results of studies on intramolecular interconversions in systems of norbornadiene quadricyclane and their derivatives are classified and discussed in this article, where the mechanisms of the forward photoreaction and reverse thermal process in relation to the nature of the substituents and carbocycles, type of sensitiser and catalyst, and properties of the medium are discussed in detail and classified.
Journal ArticleDOI
Criteria for the Efficiency, Stability, and Capacity of Abiotic Photochemical Solar Energy Storage Systems
Hans-Dieter Scharf,Jörg Fleischhauer,H. Leismann,Ingrid Ressler,Wolfgang Schleker,Robert Weitz +5 more
TL;DR: In this paper, a correlation between time-independent experimental data and photochemical reactions is achieved and a comparative classification of known reactions is possible, from the viewpoint of photochemistry, based on which a useful correlation on the basis of time independent experimental data can be achieved.
Journal ArticleDOI
Organometallic intramolecular-coordination compounds containing a π-allyl donor ligand
TL;DR: Etude des complexes contenant cyclooctadiene, dicyclopentadiene (DCP), norbornadiene and cycloctatetraene as discussed by the authors.
Book ChapterDOI
Olefin Complexes of the Transition Metals
H.W. Quinn,J.H. Tsai +1 more
TL;DR: A survey of the literature on the interaction of olefins with the transition metals can be found in this article, where the authors focus on the transition metal complexes of OO and only discuss those that have been isolated and characterized.
Journal ArticleDOI
Kriterien für Wirkungsgrad, Stabilität und Kapazität abiotischer photochemischer Solarenergiespeicher
Hans-Dieter Scharf,Jörg Fleischhauer,H. Leismann,Ingrid Ressler,Wolfgang Schleker,Robert Weitz +5 more
TL;DR: In this article, a vergleichende Vergleich der Systeme untereinander nicht hinreichend genau moglich ist, wie eine zweckdienliche Relativierung auf der Basis von zeitunabhangigen Mesgrosen gelingt.
References
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Journal ArticleDOI
Photosensitized cycloaddition reactions1
Journal ArticleDOI
Valence isomerization of quadricyclene to norbornadiene catalyzed by transition metal complexes
H. Hogeveen,H. C. Volger +1 more
Journal ArticleDOI
992. Complexes of ruthenium, rhodium, iridium, and platinum with tin(II) chloride
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