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

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

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The title three-dimensional coordination network, {[Er(C4H4N2O2)4](ClO4)3}n, is isostructural to that of other lanthanides.The Er+3 cation lies on a fourfold roto-inversion axis.It is coordinated in a distorted square-antiprismatic fashion by eight O atoms from bridging pyrazine N,N′-dioxide ligands.There are two read more unique pyrazine N,N′-dioxide ligands.One ring is located around an inversion center, and there is a a twofold rotation axis at the swisse high strength magnesium powder berry 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 interact with the coordination network through C—H.O hydrogen bonds.