Oxocentered Units in Three Novel Rb‐Containing Copper Compounds Prepared by CVT Reaction Method

• Published in: Zeitschrift für anorganische und allgemeine Chemie (1950) Vol. 644; no. 2; pp. 77 - 81
• Main Authors: Kornyakov, Ilya V., Krivovichev, Sergey V., Gurzhiy, Vladislav V.
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley Subscription Services, Inc 01-02-2018
• Subjects: Anions; Chemical bonds; Chemical reactions; Chemical vapor transport reactions; Clusters; Copper; Copper compounds; Copper oxides; Crystal structure; Dimers; Hydrogen bonds; Minerals; Oxocentered tetrahedra; Selenium dioxide; Structure elucidation
• ISSN: 0044-2313; 1521-3749
• DOI: 10.1002/zaac.201700342

Three novel copper compounds, Rb4Cu4OCl10 (I), Rb[Cu3O](SeO3)2Cl (II), and RbCu3(OH)(SeO3)Cl4(H2O)3 (III) were prepared by chemical vapor transport (CVT) reactions method from mixtures of CuO, SeO2, RbCl, and CuCl2. The crystal structures of the three compounds were determined by direct methods. Compound I is a Rb analogue of ponomarevite, K4Cu4OCl10. Its crystal structure contains {[OCu4]Cl10}4– clusters with oxocentered [OCu4]6+ tetrahedra as cores. The clusters are linked by the Rb+ cations. The crystal structure of II contains complex {[O2Cu6](SeO3)4Cl2}2– layers formed by dimers of edge‐sharing [OCu4]6+ tetrahedra interlinked via selenite groups and Cl– anions. The crystal structure of III is based upon {[(OH)Cu3](SeO3)}3+ layers formed by the [(OH)Cu3]5+ tetrahedra attached to (SeO3)2– groups. The layers are linked via Cl– anions and via hydrogen bonds to H2O molecules.