Structure of Two Azide Salts of a Copper(II) Macrocycle and Magnetic Properties of Cu(14ane)Cu(N₃)₄

Synthesis of azide complexes with the copper(II) macrocycle complex Cu(14ane)2+ (where 14ane = 1,4,8,11-tetraazacyclothetradecane) has yielded two compounds. Cu(14ane)Cu(N3)4 contains μ(1,3)-azido bridged chains of Cu(14ane)2+ cations and Cu(N3)42- anions. Magnetic studies reveal the presence of ferromagnetic interactions within the chains with J/k = 0.635(4) K. [Cu(14ane)N3]BF4 contains [Cu(14ane)N3]+ cations with elongated square pyramidal geometry. The BF4- anions are weakly coordinated in the sixth coordination site of the cations.