cg060216y_si_002.cif (56.33 kB)

Interplay of Hydrogen Bonds in Assembling (4,4)-Coordination Networks:  Transformations from Open to Interpenetrated Networks via Anion Exchange

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posted on 02.08.2006, 00:00 by Madhushree Sarkar, Kumar Biradha
Open (4,4)-coordination networks were shown to assemble via N−H···O hydrogen bonds in two different ways:  the usual offset packing via β-sheet hydrogen bonds and an unprecedented trigonal packing. Both of the structures have continuous channels that are occupied by guest molecules (nitrobenzene or EtOH and H2O) which account for 37% or 28% of the crystal volume. Interestingly, these complexes have shown an ability to exchange ClO4- with PF6- ions and transform into the doubly interpenetrated varieties.