论文信息 - Synthesis of New Chalcogenide Materials. The Novel One-Dimensional Semiconductor K 4 Ti 3 S 14

Synthesis of New Chalcogenide Materials. The Novel One-Dimensional Semiconductor K 4 Ti 3 S 14

The use of A 2 Q/Q melts (A - alkali metal, Q - S or Se) for the synthesis of new one-dimensional solid-state materials is found to be of general utility and is illustrated here for the synthesis of K 4 Ti 3 SI 4 . Reaction of Ti metal with a K 2 S/S melt at 375°C for 50 h affords K 4 Ti 3 SI 4 . The structure possesses one-dimensional chains of seven and eightcoordinate Ti atoms with each chain isolated from all others by surrounding K atoms. There are six S-S pairs (d ave - 2.069(3) A) so that the compound is one of Ti IV and may be described as K 4 [Ti 3 (S) 2 (S 2 ) 6 ]. Electrical conductivity measurements indicate that this material is a semiconductor.

J. Ibers | S. Sunshine | Doris Kang

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