Crystal structure of catena-poly[[[aqua­lithium(I)]-μ-pyrimidine-2-carboxyl­ato-κ(4) N (1),O (2):N (3),O (2′)] hemihydrate]

The title compound, {[Li(C(5)H(3)N(2)O(2))(H(2)O)]·0.5H(2)O}(n), comprises four symmetry-independent Li(C(5)H(3)N(2)O(2))(H(2)O) units which form mol­ecular ribbons running along the c-axis direction. Within each ribbon, the ligand mol­ecule, acting in a μ(2)-mode, bridges two adjacent Li(+) cations using both of its N,O-bonding sites. The coordination environment of each of the four Li(+) cations can be described alternatively as either slightly distorted trigonal–bipyramidal or slightly distorted square–pyramidal. The ribbons are inter­connected by a network of O—H⋯O hydrogen bonds.