Research Article: [(4R,5R)-(2,2-Dimethyl-1,3-dioxolane-4,5-di­yl)bis­(diphenyl­methano­lato)-κ2O:O′]bis(N-methyl­methanamin­ato)titanium(IV)

Date Published: February 01, 2012

Publisher: International Union of Crystallography

Author(s): Leslie Roteta, Joseph M. Tanski.

http://doi.org/10.1107/S1600536812002929

Abstract

In the title four-coordinate complex, [Ti(C2H6N)2(C31H28O4)], two symmetry-independent mol­ecules are present in the asymmetric unit. The TiIV atom displays a distorted tetra­hedral geometry, with Ti—O bond lengths ranging from 1.805 (3) to 1.830 (3) Å and O—Ti—O ligand bite angles of 100.16 (12) and 101.36 (12)°. The short Ti—N bond distances, ranging from 1.877 (4) to 1.905 (4) Å, indicate strong bonding between the TiIV atom and the dimethyl­amide ligands.

Partial Text

For the use of titanium-TADDOLate complexes in asymmetric catalysis, see: Degni et al. (2005 ▶); Gothelf et al. (1995 ▶); Seebach et al. (1992 ▶). For a related structure of a four-coordinate titanium-TADDOLate compound, see: Seebach et al. (1992 ▶). For related structures of six-coordinate titanium-TADDOLate compounds, see: Chen et al. (2007 ▶); Gothelf et al. (1995 ▶); Hinter­mann et al. (2002 ▶); Kongprakaiwoot et al. (2010 ▶); Shao & Gau (1998 ▶); Shao et al. (2001 ▶); Sheen & Gau (2004 ▶). For a report of the in-situ preparation of the title compound, see: Ackermann et al. (2003 ▶).

 

Source:

http://doi.org/10.1107/S1600536812002929