Synthesis and Characterization of a Novel Misfit-layered Copper Manganese Hydroxide Oxide
A copper manganese hydroxide oxide, CuMn<SUB>2.22</SUB>O<SUB>5.25</SUB>·2.04H<SUB>2</SUB>O, which has a novel misfit-layered structure built with pseudohexagonal MnO<SUB>2</SUB> and orthorhombic Cu(OH)<SUB>2</SUB> sheets, has been hydrothermally synthesized by using the layered birnessite as the precursor. This compound has been investigated by XRD, SEM, TEM, SAED, and TG-DTA. In this compound, manganese oxide sublattice is hexagonal with <I>a</I><SUB>1</SUB> = 0.282 and <I>c</I><SUB>1</SUB> = 0.942 nm, and copper hydroxide sublattice is orthorhombic and has a C-center with <I>a</I><SUB>2</SUB> = 0.578, <I>b</I><SUB>2</SUB> = 0.276, and <I>c</I><SUB>2</SUB> = 0.942 nm. The two sublattices in this compound have different symmetry, and they are incommensurate along <I>a</I> direction in <I>ab</I> plane.
- Chemistry letters
Chemistry letters 36(3), 454-455, 2007-03-05
The Chemical Society of Japan