title: A novel inorganic-organic hybrid borate, poly{[Na(2)(C(4)H(2)O(4))(H(3)BO(3))(H(2)O)(4)]·H(3)BO(3)}.
abstract: The structure of the title compound, catena-poly[[[di-μ-aqua-μ-fumarato-μ-(boric acid)-disodium]-di-μ-aqua] boric acid monosolvate], contains two crystallographically independent Na(+) cations, each being six-coordinated by one fumarate O atom, one boric acid O atom and four water O atoms in a distorted octa-hedral geometry. Adjacent [NaO(2)(OH(2))(4)] units share edges and are linked into chains propagating parallel to [100]. The free boric acid mol-ecules are connected to the chains through strong inter-molecular O-H⋯O hydrogen bonds. Additional O-H⋯O hydrogen bonds between the water mol-ecules, the free and coordinated boric acid mol-ecules and the fumarate anion lead to the formation of a three-dimensional supra-molecular structure. With the exception of the two water mol-ecules, all other atoms lie on mirror planes.
authors: State Key Laboratory Base of Novel Functional Materials and Preparation Science, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, People's Republic of China.
authors: Zhi-Dong
authors: ZD
authors: Shao
authors: Yu-Qi
authors: YQ
authors: Zhang
authors: Shu-Li
authors: SL
authors: Wu
authors: Yun-Xiao
authors: YX
authors: Liang
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