Abstract
The reactions of cyclohexenephosphonic acid (C6H9PO3H2) and 3-(2-pyridyl)pyrazole (2-pyPzH) with copper(II) chloride and copper(II) bromide affords a 1-D compound [Cu(2-pyPz)Cl] (1) and a decanuclear [Cu10(OH)4(C6H9PO3)6(2-pyPz)4] (2) cage complex. In 1, adjacent copper ions are bridged by two 2-pyPz ligands into dimers, which are further linked by Cl− into a ladder-like chain. Compound 2 has a decanuclear cage structure, the overall cage can be viewed as composed of two Cu4(OH)2(2-pyPz)2 wings that are bridged by a central Cu2P2O6 rim. Variable-temperature magnetic susceptibility studies indicate that both compounds show antiferromagnetic interactions between copper centers.
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