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Self-Assembled Squares and Triangles by Simultaneous Hydrogen Bonding and Metal Coordination

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journal contribution
posted on 05.04.2013, 00:00 by Laura J. Marshall, Javier de Mendoza
Through the combination of hydrogen bonding and metal-templated self-assembly, molecular squares and molecular triangles are observed in chloroform solution upon the complexation of hydrogen-bonded dimers of para-pyridyl-substituted 2-ureido-4-[1H]-pyrimidinone (UPy) and an appropriate cis-substituted palladium complex. Molecular modeling studies and NMR analysis confirmed the presence of two distinct structures in solution: the tubular structure of the molecular square and propeller-bowl structure of the molecular triangle.