Monoclinic Form of [Cu(C₁₀H₂₄N₄)]CuCl₄

The monoclinic form of 1,4,8,11-tetraazacyclotetradecanecopper(II) tetrachlorocuprate, [Cu(14-ane)]CuCl₄, has a chain structure consisting of Cu(14-ane)²⁺ cations linked by CuCl₄²⁻ anions. The Cu^II ion has a square-planar coordination in the cation [average Cu-N distance = 2.020 (7) Å] while the anion has a flattened tetrahedral geometry [average Cu-Cl distance = 2.246 (13) Å with average trans Cl-Cu-Cl angles = 130 (1)°]. The cations and anions are linked by semi-coordinate Cu...Cl bonds with a distance of 2.855 (2) Å to form chains which run parallel to the c axis and pack in a hexagonal array.

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