title: Poly[hydrazin-1-ium [diaqua-bis-(μ(4)-pyridazine-3,6-dicarboxyl-ato)trilithate] monohydrate].
abstract: The structure of the title compound, {(N(2)H(5))[Li(3)(C(6)H(2)N(2)O(4))(2)(H(2)O)(2)]·H(2)O}(n), is composed of mol-ecular dimers, each built up of two symmetry-related Li(I) ions with distorted trigonal-bipyramidal coordinations bridged by two deprotonated ligand mol-ecules via their N,O-bonding sites. Doubly solvated Li(I) ions with a distorted tetra-hedral geometry link adjacent dimers, forming a polymer generated by bridging bidentate carboxyl-ato O atoms to Li(I) ions in adjacent dimers, forming anionic layers parallel to the ac plane with monoprotonated hydrazinium cations and crystal water mol-ecules positioned between them. The layers are held together by an extended system of hydrogen bonds in which the hydrazinium cations and coordinated and crystal water mol-ecules act as donors and carboxyl-ate O atoms act as acceptors.
authors.affiliation: Institute of Nuclear Chemistry and Technology, ul. Dorodna 16, 03-195 Warszawa,  Poland.
authors.forename: Wojciech
authors.initials: W
authors.lastname: Starosta
authors.forename: Janusz
authors.initials: J
authors.lastname: Leciejewicz