Diaqua­bis[1,4-bis­(1-imidazol­yl)­benzene]­tri­nitrato­lanthanum(III) 1,4-bis­(1-imidazol­yl)benzene hemi­solvate monohydrate

In the title complex, [La(NO₃)₂(bib)₂(H₂O)₂]·0.5bib·H₂O [bib is 1,4-bis­(1-imidazol­yl)benzene, C₁₂H₁₀N₄], the La^III atom is coordinated by two N atoms from two bib ligands and eight O atoms from three nitrate and two water ligands. This mononuclear complex is further extended into a three-dimensional structure via hydrogen bonds with free bib and water mol­ecules of crystallization, the former lying on inversion centers.