Three well-isolated hydrogen-bonded nitrate–water aggregations, namely, [(NO3)4(H2O)6]n, [(NO3)2(H2O)2]n and [(NO3)2(H2O)] are unmasked in three similar silver(I)–bipyridine supramolecular frameworks, formulated as [Ag4(bipy)4·o-abn·4NO3·6H2O]n (1), [Ag3(bipy)3·m-abn·3NO3·2H2O]n (2) and [Ag2(bipy)2·p-abn·2NO3·H2O]n (3) (bipy = bipyridine, abn = aminobenzonitrile). Although the hosts of the three supramolecular frameworks are similar and comprised of common silver(I)–bipyridine chain structures, isomeric abn (aminobenzonitrile) guest molecules create the different micro-environments for accommodating the diverse nitrate–water aggregations. Moreover, the thermal stabilities and luminescent properties of 1–3 are discussed.
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