Two-dimensional thallium(I) supramolecular polymer constructed from Tlπ interactions: A new precursor for the preparation of thallium(III) oxide with a nano-structural surface

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• 作者：Kamran Akhbari^a ; Ali Morsali ; ^a ; ^{morsali_a@modares.ac.ir"" rel=""nofollow}
• 关键词：Thallium(I) ; Supramolecular polymer ; Thallium(III) oxide ; Nano-structure ; Sonochemical ; Tl ; //www.sciencedirect.com/scidirimg/entities/22ef.gif"" alt=""cdots ; three dots ; centered"" title=""cdots ; three dots ; centered"" border=""0"">π ; interact
• 刊名：Polyhedron
• 出版年：2011
• 出版时间：26 May 2011
• 年：2011
• 卷：30
• 期：9
• 页码：1456-1462
• 全文大小：1227 K

文摘

A new two-dimensional thallium(I) supramolecular polymer, [Tl₂(μ₃-9-Ac)(μ₄-9-Ac)(H₂O)]_n (1) [9-HAc = 9-anthracene carboxylic acid]_, has been synthesized and characterized. The single-crystal X-ray data of compound 1 shows two types of Tl^I ions with coordination numbers of four and five. The thallium atoms have irregular coordination spheres, containing a stereo-chemically active lone pair with η⁵ TlC interactions in the vacant coordination sphere of the Tl^I ions, thus attaining total hapticities of 9 and 10 with O₅Tl1C₅ and O₄Tl2C₅ environments and Tlπ_(centroid) distances of 3.308 and 3.251 Å, respectively. The thermal stability of 1 was studied by thermo gravimetric (TG) and differential thermal analyses (DTA). Different morphologies of thallium(III) oxide with a nano-structural surface were prepared from compound 1 powders and compound 1 micro-rods. These nano-structures were characterized by X-ray powder diffraction (XRD) and scanning electron microscopy (SEM).