Coordination Polymers and Hybrid Networks of Different Dimensionalities Formed by Metal Sulfites

In our effort to explore the use of the sulfite ion to design hybrid and open-framework materials, we have been able
to prepare, under hydrothermal conditions, zero-dimensional [Zn(C12H8N2)(SO3)]·2H2O, I (a = 7.5737(5) Å, b =
10.3969(6) Å, c = 10.3986(6) Å, α = 64.172(1)°, β = 69.395(1)°, γ = 79.333(1)°, Z = 2, and space group P1̄),
one-dimensional [Zn2(C12H8N2)(SO3)2(H2O)], II (a = 8.0247(3) Å, b = 9.4962(3) Å, c = 10.2740(2) Å, α = 81.070(1)°, β = 80.438(1)°, γ = 75.66(5)°, Z = 2, and space group P1̄), two-dimensional [Zn2(C10H8N2)(SO3)2]·H2O, III
(a = 16.6062(1) Å, b = 4.7935(1) Å, c = 19.2721(5) Å, β = 100.674(2)°, Z = 4, and space group C2/c), and
three-dimensional [Zn4(C6H12N2)(SO3)4(H2O)4], IV (a = 11.0793(3) Å, c = 8.8246(3) Å, Z = 2, and space group
P42nm), of which the last three are coordination polymers. A hybrid open-framework sulfite−sulfate of the composition
[C2H10N2][Nd(SO3)(SO4)(H2O)]2, V (a = 9.0880(3) Å, b = 6.9429(2) Å, c = 13.0805(5) Å, β = 91.551(2)°, Z =
2, and space group P21/c), with a layered structure containing metal−oxygen−metal bonds has also been described.