Abstract:
Catechol (cat) and trans-1,2-bis(4-pyridyl)ethylene (4,4’-bpe) form a 1:1 co-crystal, of composition (cat)·(4,4’-bpe) 1, that consists of infinite one-dimensional (1D) undulating chains held together by O-H···N hydrogen bonds. The chains are based on an alternating sequence of five crystallographically independent molecules, two that involve cat and three that involve 4,4’-bpe, and an eight-component repeat unit. The cat molecules adopt an anti-anti conformation, while the olefins adopt either a co-planar or twisted conformation. The chains self-assemble via a combination of face-to-face π-π interactions, C-H···π forces, and C-H···O hydrogen bonds.
