title: 2-Methyl-imidazolium hydrogen maleate.
abstract: Mol-ecules in the title compound, C(4)H(7)N(2) (+)·C(4)H(3)O(4) (-), are linked by inter-molecular N-H⋯O hydrogen bonds into one-dimensional chains parallel to [101]. These chains are in turn linked by an R(2) (2)(8) motif, formed by weak C-H⋯O hydrogen bonds, into corrugated sheets running parallel to (10). These sheets are further linked by weak inter-molecular C-H⋯O hydrogen bonds, forming a three-dimensional network. Intra-molecular N-H⋯O and O-H⋯O inter-actions are also present.
authors.affiliation: College of Horticulture and Gardening, Yangtze University, Jingzhou 434025, Hubei, People's Republic of China, and College of Biological Science and Biotechnology, Beijing Forestry University, Beijing 100083, People's Republic of China.
authors.forename: Zhi-Xiong
authors.initials: ZX
authors.lastname: Liu