C. Glidewell et G. Ferguson, 1,3-ADAMANTANEDICARBOXYLIC ACID AND 1,3-ADAMANTANEDIACETIC ACID, Acta crystallographica. Section C, Crystal structure communications, 52, 1996, pp. 1466-1470
The structure of 1,3-adamantanedicarboxylic acid (tricyclo[3.3.1.1(3'7
)]decane-1,3-dicarboxylic acid), C12H16O4, consists of hydrogen-bonded
chains of molecules related by a glide plane. In 1,3-adamantanediacet
ic acid (tricyclo[3.3.1.1(3,7)]decane-1,3-diacetic acid), C14H20O4, tb
e asymmetric unit comprises two hydrogen-bonded molecules and these bi
molecular units are in turn linked by hydrogen bends across centres of
inversion to give chains.