Poly[copper(II)-mu-pyrazine-mu(3)-squarato].
In the structure of the title compound, [Cu(C(4)O(4))(C(4)H(4)N(2))](n), each copper cation is surrounded by three squarate (3,4-dihydroxy-3-cyclobutene-1,2-dioate) anions and two pyrazine ligands, all of which are located in special positions. The copper cation and all atoms of the squarate anion are located on a mirror plane, whereas the pyrazine ligand is located around a mirror plane which is perpendicular to the ring plane. The cations are connected via the squarate anions and the pyrazine ligands, forming sheets parallel to (001).
Näther
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Institut für Anorganische Chemie, Christian-Albrechts-Universität Kiel, Olshausenstrasse 40, D-24098 Kiel, Germany. cnaether@ac.uni-kiel.de
Jess
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I