π-Bonding in Complexes of Benzannulated Biscarbenes, -germylenes, and -stannylenes: An Experimental and Theoretical Study

✍ Scribed by F. Ekkehardt Hahn; Alexander V. Zabula; Tania Pape; Alexander Hepp; Ralf Tonner; Robin Haunschild; Gernot Frenking

• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 284 KB
• Volume: 14
• Category: Article
• ISSN: 0947-6539
• DOI: 10.1002/chem.200801128

✦ Synopsis

Abstract

Benzannulated bisstannylenes, exhibiting a CH~2~C(CH~3~)~2~CH~2~ linking unit and CH~2~__t__Bu (1) or CH~2~CH~2~CH~2~NMe~2~ (2) N‐substituents, and their molybdenum tetacarbonyl complexes 3 and 4 have been prepared. The complexes 3 and 4 exhibit remarkably short MoE bond lengths compared to the related biscarbene and bisgermylene complexes. The experimentally determined bonding parameters of the molybdenum bisstannylene complexes are discussed based on DFT calculations.