10.1021/ja052400y.s002 Hongping Zhu Hongping Zhu Jianfang Chai Jianfang Chai Vojtech Jancik Vojtech Jancik Herbert W. Roesky Herbert W. Roesky William A. Merrill William A. Merrill Philip P. Power Philip P. Power The Selective Preparation of an Aluminum Oxide and Its Isomeric C−H-Activated Hydroxide American Chemical Society 2005 1 hydrolyzes isomers 1 Ar substituents temperature treatment HC Aluminum Oxide Selective Preparation LAl aluminum amide 3 2 result aluminum oxide oxidative addition 2005-07-27 00:00:00 Dataset https://acs.figshare.com/articles/dataset/The_Selective_Preparation_of_an_Aluminum_Oxide_and_Its_Isomeric_C_H_Activated_Hydroxide/3275596 An aluminum oxide [LAlO]<sub>2</sub> (<b>1</b>) has been prepared by the oxidative addition of aluminum(I) monomer LAl (L = HC[(CMe)(NAr)]<sub>2</sub>, Ar = 2,6-<i>i</i>Pr<sub>2</sub>C<sub>6</sub>H<sub>3</sub>) with molecular oxygen. The short Al−O bonds in Al<sub>2</sub>(μ-O)<sub>2</sub> result in short Al···Al contacts and subsequent steric crowding of the Ar substituents from the two oriented L. <b>1</b> hydrolyzes to form [LAl(OH)]<sub>2</sub>(μ-O) (<b>2</b>). A C−H-activated aluminum hydroxide <b>4</b>, an isomer of <b>1</b>, however, is obtained by hydrolysis of the bulky aluminum amide <b>3</b> rather than by a conversion by high temperature treatment of <b>1</b>. This indicates selective preparation of isomers <b>1</b> and <b>4</b>.