This article reports the synthesis and paddle-wheel structure of [Cu 2 (4-ClC 6 H 4 COO) 4 (EtOH) 2 ], and its reaction with pyridine (pyr), 2,2′-bipyridine (bpy), and 1,4,8,11-tetraazacyclotetradecane (cyclam) to form mononuclear covalent complexes, [Cu(4(4), respectively. The molecular structures of 2 and 3 were determined by single-crystal X-ray crystallography. Complexes 1 and 4 then reacted with 4-hexadecyloxypyridine (L) to form mesomorphic complexes, [Cu(4-ClC 6 H 4 COO) 2 (L) 2 (H 2 O)] (5) and [Cu (cyclam)(L) 2 ](4-ClC 6 H 4 COO) 2 (6), respectively. These complexes are potential molecular magnetic materials with tunable properties.
The structure of the dinuclear title complex, [Cu2(C5H9O2)4(C5H5N)2], represents a monoclinic polymorph of the previously reported triclinic form [Blewett et al. (2006 ▶). Acta Cryst. E62, m420–m422]. Each carboxylate group is bidentate bridging and the distorted octahedral geometry about each CuII atom is completed by a pyridine N atom and the other Cu atom [Cu⋯Cu = 2.6139 (7) Å]. In the crystal, molecules are connected into supramolecular chains via π–π interactions formed by the pyridine rings [centroid–centroid distance = 3.552 (3) Å] and these are connected into a two-dimensional array in the ac plane by C—H⋯π contacts. One of the tert-butyl groups is disordered over two orientations in a 0.734 (6):0.266 (6) ratio.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.