Department of Chemistry, Northwestern University, Evanston, Illinois 60208, USA.
Inorg Chem. 2009 Dec 7;48(23):10910-2. doi: 10.1021/ic9019074.
The reaction of the Zintl compound K(4)Ge(9) with Te and Ga(2)Te(3) in ethylenediamine (en) at 190 degrees C gave the germanium polytelluride {Ga(en)(3)[(GeTe)(2)(Te(5))(6-)(Te(8))(4-)]}(n) (1). The single-crystal structure analysis revealed that 1 has two different polytelluride fragments: cross-shaped 36-e(-) TeTe(4)(6-) anions and boat-shaped 52-e(-) Te(8)(4-) rings. The new material is a p-type semiconductor at room temperature and switches to n-type at 380 K.
Zintl 化合物 K(4)Ge(9)与 Te 和 Ga(2)Te(3)在乙二胺（en）中于 190°C 反应，得到锗多碲化物{Ga(en)(3)[(GeTe)(2)(Te(5))(6-)(Te(8))(4-)]}(n) (1)。单晶结构分析表明，1 具有两种不同的多碲化物片段：十字形 36-e(-) TeTe(4)(6-)阴离子和船形 52-e(-) Te(8)(4-)环。这种新材料在室温下是 p 型半导体，在 380 K 时变为 n 型。
