Dimethyl 5,5 '-methylenebis(2-hydroxybenzoate)


In the title compound, C17H16O6, 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)degrees]. Intramolecular phenolic O-H center dot center dot center dot O hydrogen bonds with carboxyl O-atom acceptors are present, with these groups also involved in centrosymmetric cyclic intermolecular O-H center dot center dot center dot O hydrogen-bonding associations [graph set R-2(2)(4)], giving infinite chains extending across (101).

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Guieu, S; Brandao, P; Rocha, J; Silva, AMS

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Thanks are due to the University of Aveiro and the Portuguese Fundacao para a Ciencia e a Tecnologia (FCT) for funding the Organic Chemistry Research Unit (project PEst-C/QUI/UI0062/2011) and the CICECO Associate Laboratory (PEst-C/CTM/LA0011/2011). SG also thanks the FCT for a postdoctoral grant (SFRH/BPD/70702/2010).

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