Fragmentation Of An Infinite Zno_2 Square Plane Into Discrete [zno_2]~(2-) Linear Units In The Oxyselenide Ba_2zno_2ag_2se_2

摘要

Electron diffraction, neutron powder diffraction, and EXAFS measurements show that the ZnO_2 plane in the layered oxyselenide Ba_2ZnO_2Ag_2Se_2 is not continuous, but consists of discrete orien-tationally ordered [ZnO_2]~(2-) anions presenting a rare example of the Zn~(2+) d~(10) ion in linear coordination.