5 years ago

Redox-Disproportionation of a Decamethyltitanocene(III) Isonitrile Alkynyl Complex

Redox-Disproportionation of a Decamethyltitanocene(III) Isonitrile Alkynyl Complex
Uwe Rosenthal, Anke Spannenberg, Fabian Reiß, Perdita Arndt, Torsten Beweries, Haijun Jiao, Dirk Hollmann, Kai Altenburger
A mixed decamethyltitanocene(III) isonitrile alkynyl complex (7) was synthesized by the sequential introduction of the isonitrile and alkynyl ligands. Direct synthesis results in the formation of the diamagnetic decamethyltitanocene bis(isonitrile) (2) and bis(alkynyl) (3) complexes. Compound 7 undergoes disproportionation at room temperature to give 2 and 3. All complexes were fully characterized by IR, NMR, and EPR spectroscopy, and mass spectrometry. Molecular structures for complexes 2 and 7 are reported. The stability and reactivity of these complexes are rationalized by DFT computations. Lucky number three: Stepwise introduction of isonitrile and alkynyl ligand gives a mixed decamethyltitanocene(III) isonitrile alkynyl complex, which undergoes redox disproportionation at room temperature to yield two well-defined diamagnetic Ti complexes.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/chem.201701374

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