ISSN:
0044-2313
Keywords:
Hafnocene monoarsenido complex
;
Insertion reactions
;
Crystal structures
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Synthesis and Insertion Reactions of Cp2′HfCl{As(SiMe3)2} (Cp′ = C5H4Me)The reaction of Cp2′HfCl2 (Cp′ = C5H4Me) with Li(THF)2,5As(SiMe3)2 (1 : 1) at room temperature gives the terminal hafnocene arsenido complex Cp2′HfCl{As(SiMe3)2} (1) in high yield. 1 inserts CS2 and PhNC into the Hf—As bond yielding Cp2′HfCl{η2-S2CAs(SiMe3)2} (2) and Cp2′HfCl{η2-N(Ph)CAs(SiMe3)2} (3). The thermally sensitive complexes 1-3 were characterised spectroscopically and crystal structure determinations were carried out on 1 and 3 which shows the η2 bonding mode of the N(Ph)CAs(SiMe3)2 ligand in the latter.
Notes:
Die Reaktion von Cp2′HfCl2 (Cp′ = C5H4Me) mit Li(THF)2,5As(SiMe3)2 (1 : 1) bei Raumtemperatur liefert den terminalen Hafnocen-Monoarsenido-Komplex Cp2′HfCl{As(SiMe3)2} (1) in guter Ausbeute. 1 reagiert mit CS2 oder PhNC unter Insertion in die Hf—As-Bindung und Bildung von Cp2′HfCl{η2-S2CAs(SiMe3)2} (2) und Cp2′HfCl{η2-N(Ph)CAs(SiMe3)2} (3). Die thermisch labilen Verbindungen 1-3 wurden spektroskopisch charakterisiert; an 1 und 3 wurden Röntgenstrukturanalysen durchgeführt. Demnach liegt in 3 ein η2-koordinierter N(Ph)CAs(SiMe3)2-Ligand vor.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19966220419
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