The title compound, sodium dizinc hydroxide bis(selenite), NaZn2(OH)(SeO3)(
2), contains a dense polyhedral network of octahedral ZnO6, pyramidal SeO3
and tetrahedral NaO4 units [d(av)(Zn-O) = 2.120(2), d(av)(Se-O) = 1.700(1)
and d(av)(Na-O) = 2.316(2) Angstrom]. It is isostructural with NaCo2(OH)(Se
O3)(2).