Abstract
The layered iron molybdate compound, KH 3Fe II 2Mo VI 2O 10, has been hydrothermally synthesized and structurally characterized for the first time. The compound crystallizes in monoclinic space group C2/m with a=9.6448(7), b=6.5946(4), c=7.8563(5) A ̊ , β=115.950(1)°, V=449.31(5) A ̊ 3 , Z=2, and R1=0.0313, wR2=0.0817. The structure consists of FeO 6 octahedra and MoO 4 tetrahedra. Each FeO 6 octahedron shares edges with its adjacent FeO 6 octahedra and leads to a chain consisting of edge-sharing FeO 6 octahedron. The parallel chains are linked through MoO 4 tetrahedra. Each MoO 4 tetrahedron shares corners with two adjacent Fe octahedra through the vertical oxygen atoms of each FeO 6, and two adjacent Fe octahedra through an oxygen atom bridging the two adjacent Fe octahedra of its neighboring chain, respectively. A ∞-like 2D layers and pseudo-six-side tunnels are formed and the potassium cations are located in the pseudo-channels.
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