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14-element-bridged -, -, and chromoarenophanes were studied by EPR and
UV/Vis spectroscopy, as well as electrochemical and computational methods. The unpaired
electron mainly occupies a dz2 orbital on Cr,
irrespective of the size of the ansa bridge. Unselective insertion of a platinum(0) fragment into a C-Sn bond was
found in a stannachromoarenophane, thereby giving rise to a heterobimetallic
complex. This paper was produced in collaboration with the Braunschweig group
(Würzburg) and selected as Very Important Paper (VIP).
2D 7Li,15N heteronuclear shift
correlation has been applied to several lithiumorganyls consisting of
polydentate N ligands such as TMEDA, PMDTA and (-)-sparteine. In combination with other
spectroscopic techniques, details on the formation of the lithiumorganyl polyamine
adducts, as well as the strength of ion pairing in solution has been explored
(collaboration with the Fernández group, Almeria).
In a recent collaborative paper on metallopolymers (with the groups of Peter Roesky and Christopher Barner-Kowollik) we reported on polystyrene-based copolymers with palladium-ligating side groups, which were obtained by RAFT polymerisation of chloromethyl styrene and styrene, subsequent azide transformation and quantitative copper-mediated 1,3-dipolar cycloaddition of ethynyl pyridine.
In a collaborative paper with the group of Jan Paradies we reported on the heterolytic splitting of hydrogen by two types of [2.2]paracyclophane derived bisphosphines in combination with tris(pentafluorophenyl)borane. The reactivity of the frustrated Lewis pairs (FLPs) was exploited in the first diastereoselective domino hydrosilylation/hydrogenation reaction catalyzed by FLPs.
Finally, the 4th German edition of the renowned Inorganic Chemistry textbook “Huheey” appeared recently, with several contributions from
a team of authors, also from our side.
Huheey, James E. / Keiter,
Ellen A. / Keiter, Richard L.
Hrsg. v. Steudel, Ralf
the preface of the editor of the 4th German edition, Prof. Dr. R. Steudel: “[...] Ziel dieses Werkes war es immer, den
Lesern die wichtigsten Prinzipien der anorganischen Chemie in einer
leicht verständlichen Form zu vermitteln und dabei zu zeigen, dass die AC nach
wie vor ein faszinierendes und aktuelles Forschungsgebiet ist und keineswegs ein abgeschlossener Bereich der Naturwissenschaft. [...]“
In a recent ChemComm we report on the
preparation and structures of the first alkynyl-functionalised and catenated Sn2Si3 bicyclo[1.1.1]pentanes, together with NMR spectroscopic and
computational studies of their properties. This article is part of the ChemComm ‘Frontiers in Molecular Main Group Chemistry’ web themed issue.
Scholarship holders of the Fonds der Chemischen Industrie recently met in Karlsruhe at the Institute of Inorganic Chemistry for a local meeting. We had a wonderful scientific workshop and all participants gratefully acknowledge the support by the FCI.
2D 1H,89Y heteronuclear shift correlation through
scalar coupling has been applied to chemical shift determination on a set of
yttrium complexes of various nuclearities. This method allows the determination
of 89Y NMR data in short time.
In a recent
collaborative paper with the group of Peter Roesky we investigated in detail the redox chemistry of N-2,6-diisopropylphenylimino-2-pyridine, including cyclic
voltammetry. Bulk samples of alkali metal salts of monoanionic radical and
dianionic iminopyridine were synthesized and characterized by various methods.
The radical form was fully investigated by magnetic measurements, EPR spectroscopy,
and DFT calculations (See also spotlight on this paper)
structural, EPR spectroscopic and electrochemical study on some copper
complexes of tripodal N-donor ligands
has been published recently. The paper was dedicated to Prof. Dr. W. Kaim on
occasion of his 60th birthday.
In a recent tutorial review we have summarized
early findings and recent developments in the area of heavy [1.1.1]propellanes of group 14. More than 20 years after the first
member of this family has been published, several contributions to this area
have impressively extended the spectrum of these “non-classical” molecules.
Still in its infancy, further perspectives are now arising.
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