Tris(2,6‐diisopropylphenolato)titanium(IV) Dihydridodiorganylborates: Synthesis and Structures

The reactions of tris(2,6‐diisopropylphenolato)titanium(IV) chloride with alkali‐metal dihydridodiorganylborates M(H 2 BR 2 ) (M = Li, K; R = Me, C 6 H 11 , CMe 3 ; BR 2 = BC 5 H 10 , BC 8 H 14 ) led to the corresponding titanium dihydridodiorganylborates. However, in almost all cases byproducts such as (2,6‐diisopropylphenolato)diorganylboranes, triorganylboranes, diorganylboranes, diborane and tetrakis(2,6‐diisopropylphenolato)titanium(IV) were also generated. (2,6‐ i Pr 2 C 6 H 3 O) 3 Ti(H 2 BR 2 ) compounds also resulted from the interaction of methyltris(2,6‐diisopropylphenolato)titanium, for example, with catecholborane. In addition to the formation of tris(2,6‐diisopropylphenolato)catecholboratotitanium(IV), B ‐methylcatecholborane was also formed The reaction of potassium dihydro‐9‐cyclooctylborate with 2,6‐bis(2,2‐di‐ tert ‐butyl‐2‐hydroxyethyl)pyridinetitanium dichloride (LTiCl 2 ) led to the complex LTi(H 2 BC 8 H 14 ) 2 . This compound showed no agostic C–H ··· Ti interaction in contrast to (2,6‐ i Pr 2 C 6 H 3 O) 3 TiH 2 BC 8 H 14 and the corresponding titanium dihydridobis(cyclohexyl)borate.