Coordination polymers and hybrid networks of different dimensionalities formed by metal sulfites

Abstract

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 P_↑), 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 P_↑), 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.