Hetero-bimetallic alkali titanosilicates [MOTi{OSi(OtBu)3}3]2 (M = Li–Cs) with terminal Ti–O− groups†
Mónica
Moya-Cabrera 
ab
and
Vojtech
Jancik
*ab
ab
and
Vojtech
Jancik
*ab
Abstract
The molecular titanosilicate [(tBuO3)3SiO]3TiNEt2 (1) was obtained from the reaction between silanol (tBuO3)3SiOH and titanium amide Ti(NEt2)4. The reaction of 1 with alkali metal hydroxides MOH (M = Li, Na, K, Rb, Cs) offers a straightforward route to the alkaline salts of titanosilicates [MOTi{OSi(OtBu)3}3]2 with a terminal Ti–O− moiety. All compounds were characterised by single-crystal X-ray diffraction studies. Hirshfeld atom refinement and QTAIM analysis of the electron density in 1 and in the Rb salt 5 revealed the D–A nature of the Ti–O and Ti–N bonds and the presence of agostic C–H⋯Rb interactions.
![Graphical abstract: Hetero-bimetallic alkali titanosilicates [MOTi{OSi(OtBu)3}3]2 (M = Li–Cs) with terminal Ti–O− groups](/en/Image/Get?imageInfo.ImageType=GA&imageInfo.ImageIdentifier.ManuscriptID=D2DT00939K&imageInfo.ImageIdentifier.Year=2022)
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