title: Second monoclinic polymorph of 4-[(1H-benzimidazol-1-yl)meth-yl]benzoic acid.
abstract: Recently, we reported the first monoclinic [Kuai & Cheng (2011). Acta Cryst., E67, o2787] and the ortho-rhom-bic polymorph [Kuai & Cheng (2011). Acta Cryst., E67, o3014] of the title compound, C(15)H(12)N(2)O(2). Another monoclinic polymorph was obtained accidentally by the hydro-thermal reaction of the title compound with manganese chloride in the presence of potassium hydroxide at 413 K. The asymmetric unit consists of four independent mol-ecules. In the crystal, O-H⋯N hydrogen bonds link the independent mol-ecules into four separate chains parallel to the b axis.
authors.affiliation: Faculty of Life Science and Chemical Engineering, Huaiyin Institute of Technology, Huaian 223003,  People's Republic of China.
authors.forename: Hai-Wei
authors.initials: HW
authors.lastname: Kuai
authors.forename: Xiao-Chun
authors.initials: XC
authors.lastname: Cheng