Solid-State
Structural Transformations of Two Ag<sup>I</sup> Supramolecular Polymorphs
to Another Polymer upon Absorption of HNO<sub>3</sub> Vapors
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Abstract
Solid-state
structural transformation of two polymorphic forms of [Ag(8-HqH)(8-Hq)]<sub><i>n</i></sub> (<b>1α</b> and <b>1β</b>, where 8-HqH = 8-hydroxyquinoline and 8-Hq<sup>–</sup> =
8-hydroxyquinolate) to {[Ag(8-HqH)<sub>2</sub>]NO<sub>3</sub>}<sub><i>n</i></sub> (<b>2</b>) has been observed upon
solid–gas reaction of compounds <b>1α</b> and <b>1β</b> with HNO<sub>3</sub> vapors. Solid–gas reaction
of compound <b>2</b> with hydrated vapors of NH<sub>3</sub> results
in the formation of only the <b>1β</b> polymorph, while
solid–solid reaction of compound <b>2</b> with KOH results
in the formation of a <b>1α</b> and <b>1β</b> mixture with chiral and achiral space groups of <i>P</i>2<sub>1</sub>2<sub>1</sub>2<sub>1</sub> and <i>Pbcn</i>, respectively
