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The title three-dimensional coordination network, {[Dy(C(4)H(4)N(2)O(2))(4)](ClO(4))(3)}(n), is isostructural of other lanthanides. The Dy(+3 )cation lies on a fourfold roto-inversion axis. It is coordinated in a distorted square-anti-prismatic fashion by eight O atoms from bridging pyrazine N,N'-dioxide ligands. There are two unique pyrazine N,N'-dioxide ligands. One ring is located around an inversion center, and there is a a twofold rotation axis at the center of the other ring. There are also two unique perchlorate anions. One is centered on a twofold rotation axis and the other on a fourfold roto-inversion axis. The perchlorate anions are located in channels that run perpendicular to (001) and (110) and inter-act with the coordination network through C-H⋯O hydrogen bonds.

Poly[[tetrakis(μ2-pyrazineN,N′-dioxide-κ2O:O′)dysprosium(III)] tris(perchlorate)]

Poly[[tetrakis(μ₂-pyrazineN,N′-dioxide-κ²O:O′)dysprosium(III)] tris(perchlorate)]