The Instability of Ni{N(SiMe3)2}2: A Fifty Year Old Transition Metal Silylamide Mystery
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 obta...
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Published in | Angewandte Chemie Vol. 127; no. 44; pp. 13106 - 13109 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English German |
Published |
Weinheim
WILEY-VCH Verlag
26.10.2015
WILEY‐VCH Verlag Wiley Subscription Services, Inc |
Subjects | |
Online Access | Get full text |
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Summary: | 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.
Die Instabilität von Ni{N(SiMe3)2}2, einem der ursprünglichen Übergangsmetallsilylamide von Bürger und Wannagat, wurde nochmals unter die Lupe genommen: Offenbar findet eine Autoreduktion zum dispersionskraftstabilisierten NiI‐Tetramer [Ni{N(SiMe3)2}]4 statt, dem ersten neutralen homoleptischen NiI‐Amid (siehe Bild; hellblau Si, dunkelblau N, grün Ni). |
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Bibliography: | National Science Foundation - No. CHE-1263760 istex:31A9271691ED8A7EA5CC016A2C26FD43B306F8E2 ark:/67375/WNG-1XQ42V5Q-2 ArticleID:ANGE201505518 Academy of Finland - No. 136929; No. 253907; No. 272900 NSF - No. DGE-1148897 |
ISSN: | 0044-8249 1521-3757 |
DOI: | 10.1002/ange.201505518 |