A co-crystal of 1,10-phenanthroline with boric acid: A novel aza-aromatic complex

Abstract

The title compound, C12H8N2·2B(OH)3, is best described as a host-guest complex in which the B(OH)3 molecules form a hydrogen-bonded cyclic network of layers parallel to the ab plane into which the 1,10-phenanthroline molecules are bound. An extensive network of hydrogen bonds are responsible for the crystal stability. No π-stacking interactions occur between the 1,10-phenanthroline molecules.