Dibenzylbis(tert-butylimido)molybdenum(VI), containing both eta(1)- and eta(2)-benzyl ligands

Citation
W. Clegg et al., Dibenzylbis(tert-butylimido)molybdenum(VI), containing both eta(1)- and eta(2)-benzyl ligands, ACT CRYST C, 55, 1999, pp. 916-918
Citations number
11
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS
ISSN journal
01082701 → ACNP
Volume
55
Year of publication
1999
Part
6
Pages
916 - 918
Database
ISI
SICI code
0108-2701(19990615)55:<916:DCBEAE>2.0.ZU;2-Z
Abstract
The title compound, [Mo(CH2Ph)(2)(C4H9N)(2)], contains two slightly bent im ido ligands and two benzyl ligands. One of these benzyl ligands is coordina ted as a simple eta(1)-alkyl ligand, while the other is eta(2)-coordinated through the CH2 group and the ipso-C atom, i.e. dibenzyl-kappa C-alpha; kap pa(2)C(1), C-alpha-bis(tert-butylimido-kappa N)molybdenum(VI). Considering the eta(2)-benzyl ligand as occupying one coordination site, this gives a t etrahedral geometry around molybdenum, the main angular distortion being a mutual repulsion of the two strongly pi-donating imido ligands. This comple x is not crystallographically isostructural with its chromium analogue, but the two molecular structures are very similar.