Dimethyl 2,2′-bipyridine-6,6′-dicarboxyl-ate and bis-(dimethyl 2,2′-bipyridine-6,6′-dicarboxyl-ato-2 N,N′)copper(I) tetra-fluoro-borate

Article abstract of DOI:10.1107/S0108270107020914

The single-crystal X-ray structures of dimethyl 2,2′-bipyridine-6, 6′-dicarboxylate, C14H12N2O4, and the copper(I) coordination complex bis-(dimethyl 2,2′-bipyridine-6,6′-dicarboxylato-² N,N′)copper(I) tetra-fluoro-borate, [Cu(C14H12N2O4)2]BF4, are reported. The uncoordinated ligand crystallizes across an inversion centre and adopts the anti-cipated anti pyridyl arrangement with coplanar pyridyl rings. In contrast, upon coordination of copper(I), the ligand adopts an arrangement of pyridyl donors facilitating chelating metal coordination and an increased inter-pyridyl twisting within each ligand. The distortion of each ligand contrasts with comparable copper(I) complexes of unfunctionalized 2,2′-bipyridine. International Union of Crystallography 2007.