Quaternary supertetrahedra-layered telluride CsMnInTe3: why does this type of chalcogenide tilt?
Dark-red CsMnInTe3 is synthesized by a solid-state approach using CsCl as the reactive flux. This layered compound is constructed by T3 supertetrahedra and crystallizes in the space group C2/c with a = 12.400(7) Å, b = 12.400(7) Å, c = 24.32(2) Å, β = 97.31(2)°, and V = 927.07(6) Å(3). The electrostatic interactions cause tilting of the supertetrahedra layers, and the value of the tilting angle is fixed by a structure index, β' = 180° - arccos(a/4c). Such an index is valid for all of the members in this family known to date.
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou, Fujian 350002, People's Republic of China.
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Lin
Jin-Ni
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Ling
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Chen
Li-Ming
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Wu