Rac-(OC-6-33)-bis[2-(N-Benzylmethyliminomethyl-κN)-1H-imidazol-1-ido-κN1]bis(ethylamido)titanium(IV)

Zhao Li,Wanli Nie,Maxim V Borzov

doi:10.1107/s1600536811013183

Abstract

The title compound, [[Ti(C2H10N)2(C11H10N3)2] or Ti(C11H10N3)2(NEt2)2], was prepared by direct reaction of 2-(N-phenylmethyliminomethyl)-1H-imidazole and [Ti(NEt2)4]. The TiIV atom is in a pseudo-octahedral coordination environment with the imidazolido-group N-atoms occupying apical positions and amido- and imino-N-atoms cis-located in the equatorial plane. The presence of two bidentate chelating ligands determines the chirality of the TiIV atom. The crystallographically independent unit, except for its phenyl rings, adopts nearly pseudo-C 2 symmetry (rotation around a twofold axis passing through the Ti atom and the centre of the imino-N⋯imino-N segment). The Ti—Namido, Ti—Nimidazolido, and Ti—Nimino bond lengths essentially differ, increasing by approximately 0.2 Å in the series. All ligating N atoms are in a nearly planar environment, which is indicative of additional pπ–dπ donations towards the metal atom. The two diazametallacyclic units are planar within 0.03 and 0.05 Å.

Highlights

Structure Reports OnlineThe TiIV atom is in a pseudo-octahedral coordination environment with the imidazolido-group N-atoms occupying apical positions and amido- and imino-N-atoms cis-located in the equatorial plane
The title compound, [[Ti(C2H10N)2(C11H10N3)2] or Ti(C11H10N3)2(NEt2)2], was prepared by direct reaction of 2(N-phenylmethyliminomethyl)-1H-imidazole and [Ti(NEt2)4]
The TiIV atom is in a pseudo-octahedral coordination environment with the imidazolido-group N-atoms occupying apical positions and amido- and imino-N-atoms cis-located in the equatorial plane

Summary

Structure Reports Online

The TiIV atom is in a pseudo-octahedral coordination environment with the imidazolido-group N-atoms occupying apical positions and amido- and imino-N-atoms cis-located in the equatorial plane. The presence of two bidentate chelating ligands determines the chirality of the TiIV atom. Related literature For mononuclear neutral TiIV complexes bearing two chelating amido-imino and two amido ligands see: Xiang et al (2008); Zi et al (2008). For closely related mononuclear neutral TiIV complexes bearing two chelating amido-amino and two amido ligands see: Fandos et al (2005); Kempe (1997); Marsh (2004); Oberthur et al (1997); Smolensky et al (2005); Xiang et al (2008); Zaher et al (2008).

BRUKER SMART APEXII diffractometer

Special details