Sodium zinc tris­(di­hydrogenphosphite) hydrate, NaZn(H2PO3)3·H2O

NaZn(H2PO3)3·H2O contains zigzag chains of edge-sharing alternating NaO6 [dav(Na—O) = 2.452 (2) A] and ZnO6 [dav(Zn—O) = 2.104 (2) A] octahedra, crosslinked by H2PO3 pseudo-pyramids [dav(P—OZn) = 1.501 (2) A and dav(P—OH) = 1.572 (2) A]. It is isostructural with NaM(H2PO3)3·H2O (M = Mn, Co).