Reversible lithium insertion and copper extrusion in layered oxysulfides

摘要

All of the copper in the layered oxysulfldes Sr_2MnO_2Cu_(1.5)S_2 and Sr_2MnO_2Cu_(3.5)S_3 may be extruded as the element and the copper ions replaced quasi-reversibly by lithium ions in reductive topotactic ion exchange reactions;dramatic changes in magnetic properties result.