New molecular conductors based on EDT with anionic complexes of rare-earth elements: (EDT)2[Ho(NCS)4(H2O)4] and (EDT)3[Y(NO3)5
- 作者：Kazheva ; Olga ; Canadell ; Enric ; Kushch ; Ludmila ; Aleksandrov ; Grigorii ; Chekhlov ; Anatolii ; et. al.
- 关键词：Organic conductors ; Electrocrystallization ; X-ray diffraction ; Rare-earth elements ; Band structure
- 刊名：Synthetic Metals
- 出版年：2004
- 期刊代码：77_03796779
- 类别：ph
- 出版时间：June 3, 2004
- 卷：143
- 期：2
- 页码：221-228
- 文件大小：513 K
摘要
This work reports on the synthesis, conducting properties, crystal and electronic structures of two new molecular conductors based on EDT with anionic complexes of rare-earth elements, (EDT)2[Ho(NCS)4(H2O)4] and (EDT)3[Y(NO3)5]. The salts are characterized by a β-packing type of donors in the conducting layers. (EDT)2[Ho(NCS)4(H2O)4] is a metal down to 100K and (EDT)3[Y(NO3)5] shows semiconducting properties. The relationship between the conductivity behavior and the crystal structure of the two salts is rationalized on the basis of tight-binding band structure calculations.