Dimethyl 5,5'-methyl-enebis(2-hy-droxy-benzoate)

Acta Crystallogr Sect E Struct Rep Online. 2012 May 1;68(Pt 5):o1404. doi: 10.1107/S1600536812015760. Epub 2012 Apr 18.

Abstract

In the title compound, C(17)H(16)O(6), the two methyl salicylate moieties are related by crystallographic twofold rotational symmetry with the two benzene rings close to being perpendicular [inter-ring dihedral angle = 86.6 (8)°]. Intra-molecular phenolic O-H⋯O hydrogen bonds with carboxyl O-atom acceptors are present, with these groups also involved in centrosymmetric cyclic inter-molecular O-H⋯O hydrogen-bonding associations [graph set R(2) (2)(4)], giving infinite chains extending across (101).