title: 2-[(2-Carboxy-phen-yl)sulfan-yl]acetic acid.
abstract: The title compound, C(9)H(8)O(4)S, affords a zigzig chain in the crystal structure by inter-molecular O-H⋯O hydrogen bonds. The molecular geometry suggests that extensive but not uniform π-electron delocalization is present in the benzene ring and extends over the exocyclic C-S and C-C bonds.
authors.affiliation: Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua, Zhejiang 321004, People's Republic of China.
authors.forename: Cai-Hong
authors.initials: CH
authors.lastname: Zhan
authors.forename: Ling-Xian
authors.initials: LX
authors.lastname: Chen
authors.forename: Yun-Long
authors.initials: YL
authors.lastname: Feng