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6879154 
Journal Article 
2,2 '-(Disulfanediyl)dibenzoic acid-2,9-dimethylphenanthroline-tetrahydrofuran (1/2/1) 
Arman, HD; Kaulgud, T; Tiekink, ERT; , 
2010 
Acta Crystallographica Section E-Crystallographic Communications
ISSN: 2056-9890 
INT UNION CRYSTALLOGRAPHY 
CHESTER 
O2602-U847 
21587579 
WOS:000282558000074 
The asymmetric unit of the title co-crystal solvate, C14H10O4S2 center dot 2C(14)H(12)N(2)center dot C4H8O, comprises a 2,2'-(disulfanediyl) dibenzoic acid molecule, two molecules of 2,9-dimethylphenanthroline and a tetrahydrofuran (THF) solvent molecule. Each end of the twisted diacid [dihedral angle between the benzene rings = 74.33 (17)degrees] forms a strong O-H center dot center dot center dot N hydrogen bond with a 2,9-dimethylphenanthroline molecule, forming a trimeric aggregate. The crystal structure comprises layers of acid and THF molecules, and layers of 2,9-dimethylphenanthroline molecules that alternate along the a axis, the main connections between them being of the type C-H center dot center dot center dot O.