Neues über ternäre Interalkalimetalloxide und Alkalithallium(I)-oxide / News About Ternary Inter Alkaline Metal Oxides and Alkalinethallium(I)oxides

Abstract

Besides KNaO and RbNaO, KLiO is the third example of hitherto unknown and unexpected in- teralkaline metal oxides. The X-ray investigation of the orthorhombic KLiO (Z=8) shows a new structure with separated layers of [xxx] anions in which every lithium atom is co-ordinated by a triangle of three oxygens. The compounds KTlO, RbTlO and CsTlO are already known. Now serveral new ternary alkaline oxides with monovalent thallium have been obtained. In the Na2O-Tl2O system the red compounds NaTlO and Na3TlO2 were found. Further- more KTl3O2, RbTl3O2 and CsTl3O2 have been prepared. Their unit cells (Z=3) correlate to the unit cell of hexagonal Tl2O (Z=6)