Date Published: February 01, 2012
Publisher: International Union of Crystallography
Author(s): Jong-Ha Choi, Md Abdus Subhan, Seik Weng Ng.
The CuII atom in the title compound, [Cu(NO3)2(C20H40N4)], is N,N′,N′′,N′′′-chelated by the macrocyclic ligand: the four N atoms form a square, above and below which are located the O atoms of the nitrate ions. The metal atom exists in a tetragonally distorted octahedron, on a special position of site symmetry. One of the amino groups is hydrogen bonded to an O atom of the nitrate ion. The other amino group is hydrogen bonded to O atom of an adjacent molecule, generating a supramolecular dimeric hydrogen-bonded dinuclear aggregate.
For the synthesis of the cyclam, see: Choi et al. (2012 ▶). For similar copper nitrate–cyclam adducts, see: Amadei et al. (1999 ▶); Choi et al. (2001 ▶, 2006 ▶); Dong et al. (1999 ▶); Liu & Chu (2010 ▶).