Abstract
Two new isomeric complexes, namely {[Cu(fum)(tpy)]·5H2O}n (1) and [Cu2(fum)2(tpy)2]·4H2O (2), have been synthesized simultaneously from the reaction of Cu(fum) with tpy (where fum=fumarate, tpy=2,2′:6′,2″-terpyridine) under mild condition. The crystal structures of complexes were determined by X-ray single-crystal diffraction. Complex 1 stabilizes in an unusual 1D water tape notated T4(2)10(2), which is directed by two chiral helical water chains; binuclear complex 2 represents a complicated (6,3)-connected framework via supramolecular interactions. Additionally, complex 1 exhibits weak ferromagnetic behavior.
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