title: rac-cis-Cyclo-hexane-1,2-dicarb-oxy-lic acid-isoquinoline (1/1).
abstract: In the crystal structure of the title mol-ecular adduct, C(9)H(7)N·C(8)H(12)O(4), the two species are -linked through a carb-oxy-lic acid-isoquinoline O-H⋯N hydrogen bond. These mol-ecular pairs then inter-associate through the second acid group of the cis-cyclo-hexane-1,2-dicarb-oxy-lic acid molecules, forming a classic centrosymmetric cyclic head-to-head carb-oxy-lic acid-carboxyl O-H⋯O hydrogen-bonding association [graph-set R(2) (2)(8)], giving a zero-dimensional (cluster) structure, consisting of two of each species.
authors: Faculty of Science and Technology, Queensland University of Technology, GPO Box 2434, Brisbane, Queensland 4001,  Australia.
authors: Graham
authors: G
authors: Smith
authors: Urs D
authors: UD
authors: Wermuth