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Azaborolinyl-Komplexe, XV. Bis(η5-1,2-azaborolinyI)ruthenium-Sandwichkomplexe – Darstellung und Strukturuntersuchung/ Azaborolinyl Complexes, XV. Bis(η5-1,2-azaborolinyl)ruthenium Sandwich Complexes – Synthesis and Structure Investigation

Author:
Schmid, Günter, Boltsch, Ottmar, Bläser, Dieter, Boese, Roland
Source:
Zeitschrift für Naturforschung 2014 v.39 no.8 pp. 1082-1087
ISSN:
0932-0776
Subject:
X-ray diffraction, crystals, isomers, lithium, nuclear magnetic resonance spectroscopy, ruthenium
Abstract:
The synthesis of bis(1-tert-butyl-2 -methyl-η⁵ - 1 ,2 -azaborolinyl)ruthenium (1) and bis(2-methyll- trimethylsilyl-η⁵ - 1 ,2 -azaborolinyl)ruthenium (2) succeeds when RuCL is reacted with the corresponding 1,2-azaborolinyl lithium compounds in THF at -70 °C. Each of the sandwich complex forms two isomers with a clockwise and an anti-clockwise conformation of the azaborolinyl rings. The anti-clockwise isomer of 1 (1a) gives colourless crystals which were investigated by singlecrystal X-ray diffraction methods. The molecular structure shows the rings in an eclipsed orientation forming an interplanar angle of 8.6 °. The isomers of 1 as well as of 2 give different ¹H and ¹¹B NMR signals.
Agid:
5217390