| 20014863 |
Lee HS, Niemeyer M: Homoleptic heavy alkaline Earth and europium triazenides. Inorg Chem. 2010 Jan 18;49(2):730-5.
The sigma-bond metathesis reaction between PhSiH (3) and the heteroleptic metal pentafluorophenyl compounds [Dmp (Tph) N (3) MC (6) F (5)(thf)(n)] (Dmp = 2,6-Mes (2) C (6) H (3) with Mes = 2,4,6-Me (3) C (6) H (2); Tph = 2-TripC (6) H (4) with Trip = 2,4,6-(i) Pr (3) C (6) H (2); n = 1, 2; M = Sr, Ba, Eu) supported by sterically crowded, biphenyl- and terphenyl-substituented triazenido ligands afforded the first homoleptic stontium, barium, and europium triazenides [M{N (3) Dmp (Tph)}(2)] {M = Sr (2), Ba (4), Eu (5)}. Crystallization of 2 from an n-heptane/1,2-dimethoxyethane mixture gave the complex [Sr{N (3) Dmp (Tph)}(2)(dme)] (3). All new compounds have been characterized by (1) H and (13) C NMR spectroscopy (not 5), elemental analysis, IR spectroscopy (5 only), and X-ray crystallography. In the solid-state structures, the first coordination sphere of the metal cations consists of four nitrogen atoms of the two bidentate triazenide ligands. Additional metal-eta (n)-pi-arene-interactions of different hapticity n (n = 3-6) are observed to the flanking arms of the terphenyl substituents. |
31(0,1,1,1) |