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Group 14-element-bridged [1]-, [2]-, and [3]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 stanna[1]chromoarenophane, 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 4^th 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.

Anorganische Chemie

Hrsg. v. Steudel, Ralf

DeGruyter, 2012

Section of the preface of the editor of the 4^th 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)

A 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 60^th 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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