title: From cyanate to cyanurate: cyclotrimerization reactions towards the novel family of metal cyanurates.
abstract: The novel metal cyanurates LiSr(O3C3N3) and Li3Sr2F(O3C3N3)2 were prepared by exothermic solid state metathesis reactions and characterized by single crystal X-ray diffraction. Crystalline powders were prepared by reactions of alkali earth halides (SrCl2 and SrF2) with Li(OCN) in 1:3 molar ratios, at 450 and 575 °C. The reaction with chloride yielded LiSr(O3C3N3), and the reaction starting from the fluoride yielded LiSr(O3C3N3)·1/2LiF, containing additional LiF in the structure. Both crystal structures revealed the presence of the (O3C3N3)(3-) ions which were formed by cyclotrimerization reaction of (OCN)(-) ions. The reactions were monitored by differential thermal analysis. Infrared spectra of the compounds are reported.
authors.affiliation: Abteilung für Festkörperchemie und Theoretische Anorganische Chemie, Institut für Anorganische Chemie, Auf der Morgenstelle 18. and Universität Tübingen, 72076 Tübingen, Germany. juergen.meyer@uni-tuebingen.de.
authors.forename: Markus
authors.initials: M
authors.lastname: Kalmutzki
authors.forename: Markus
authors.initials: M
authors.lastname: Ströbele
authors.forename: H-Jürgen
authors.initials: HJ
authors.lastname: Meyer