[ZnBi4]3– Pentagon in K6ZnBi5: Aromatic All-Metal Heterocycle
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- 作者：Qian Qin ; Liujiang Zhou ; Yi Wang ; Ruili Sang ; Li Xu
- 刊名：Inorganic Chemistry
- 出版年：2014
- 出版时间：February 3, 2014
- 年：2014
- 卷：53
- 期：3
- 页码：1266-1268
- 全文大小：220K
- ISSN：1520-510X
文摘
The first aromatic all-metal heterocycle, [ZnBi4]3鈥?/sup>, found in the metallic salt, K6ZnBi5, has been synthesized and structurally characterized. The exactly planar [ZnBi4]3鈥?/sup> pentagon with six 蟺 electrons coupled with multiply bonded Zn鈥揃i and Bi鈥揃i bonds, multicentered 蟺-conjugated bonding, and negative nucleus-independent chemical shift values reveals its aromatic character. The metallic nature of K6ZnBi5 has been established by Pauli-type temperature-independent paramagnetism and theoretical analysis of the band structure and total/partial density of states.