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Synthesis of Indium(III) Supermesityl Derivatives (Supermesityl = Mes* = 2,4,6-tBu3(C6H2)). X-ray Crystal Structures of Mes*(Br)In[CH2C(Me)2C6H3(tBu)2] and Mes*In(SePh)2

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journal contribution
posted on 03.09.1996, 00:00 by Hamid Rahbarnoohi, Richard L. Wells, Louise M. Liable-Sands, Arnold L. Rheingold
Heating Mes*2InBr (Mes* = 2,4,6-tBu3(C6H2)) at 130−150 °C under reduced pressure afforded the new isomer Mes*(Br)In[CH2C(CH3)2C6H3(tBu)2] (1) in 55% yield. The solid-state structure of 1 was determined by single-crystal X-ray crystallography. The resultant geometry around the indium center can be viewed as pseudo trigonal bipyramidal due to two close contacts of o-tBu hydrogens on the Mes* groups. Reaction of In(SePh)2I with Mes*MgBr resulted in the quantitative formation of Mes*In(SePh)2 (2). An X-ray structural analysis of 2 revealed a monomeric molecule.