Di-ethyl 2,2′-bi-pyridine-4,4′-di-carboxyl-ate

摘要

The title bi-pyridine derivative, C16H16N2O4, crystallized with two half mol-ecules in the asymmetric unit. The whole mol-ecules (A?and?B) are generated by inversion symmetry with the mid-points of the bridging C—C bonds of the bi-pyridine units being located on crystallographic inversion centers. In the crystal, mol-ecules are linked by C—H?O hydrogen bonds, forming sheets parallel to (120). The sheets are linked by C—H?N hydrogen bonds, forming a three-dimensional framework.