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Z. Naturforsch. 2014,
69b, 1375 – 1383
doi:10.5560/ZNB.2014-4167
Siloxide Complexes of Chromium(II), Manganese(II), Cobalt(II), and Chromium(III) Incorporating Potassium(I)
1 Institut für Anorganische Chemie, Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
2 Department of Chemistry, University of Bergen, Allégaten 41, 5007 Bergen, Norway
Reprint requests to Prof. Dr. Reiner Anwander. Fax: +49 (0) 7071 29 2436. E-mail:
reiner.anwander@uni-tuebingen.de
Received July 31, 2014 / published online December 19, 2014
Dedicated to Professor Hubert Schmidbaur on the occasion of his 80th birthday
Heteroleptic ate complexes of the type K[M{N(SiMe3)2}2{OSi(OtBu)3}] (M = Cr, Mn, Co) were synthesized by adding one equivalent of the potassium salt KOSi(OtBu)3 to the bis(trimethylsilyl)amide precursors [Cr{N(SiMe3)2}2(thf)2], [Mn{N(SiMe3)2}2(thf)] and [Co{N(SiMe3)2}2(thf)], respectively. Surprisingly, the reaction of CrCl3(thf)3 with only two equivalents of KOSi(OtBu)3 yielded the homoleptic ate complex K[Cr{OSi(OtBu)3}4]. The compounds were characterized by elemental analysis and DRIFT spectroscopy as well as X-ray crystallography.
Key words: Siloxides, Silylamides, Transition Metals, Alkali Metals, Ate Complexes