The Instability of Ni{N(SiMe3)2}2: A Fifty Year Old Transition Metal Silylamide Mystery |
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| Authors: | Michelle Faust Aimee M. Bryan Akseli Mansikkamäki Petra Vasko Prof. Marilyn M. Olmstead Prof. Heikki M. Tuononen Prof. Fernande Grandjean Prof. Gary J. Long Prof. Philip P. Power |
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| Affiliation: | 1. Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, CA 95616 (USA);2. Department of Chemistry, NanoScience Center, University of Jyv?skyl?, P.O. Box 35, FI‐40014 Jyv?skyl? (Finland);3. Department of Chemistry, Missouri University of Science and Technology, University of Missouri, Rolla, MO 65409‐0010 (USA) |
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| Abstract: | The characterization of the unstable NiII bis(silylamide) Ni{N(SiMe3)2}2 ( 1 ), its THF complex Ni{N(SiMe3)2}2(THF) ( 2 ), and the stable bis(pyridine) derivative trans‐Ni{N(SiMe3)2}2(py)2 ( 3 ), is described. Both 1 and 2 decompose at ca. 25 °C to a tetrameric NiI species, [Ni{N(SiMe3)2}]4 ( 4 ), also obtainable from LiN(SiMe3)2 and NiCl2(DME). Experimental and computational data indicate that the instability of 1 is likely due to ease of reduction of NiII to NiI and the stabilization of 4 through dispersion forces. |
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| Keywords: | dispersion effects magnetism nickel silylamide steric effects |
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