The Stability of Mercaptobenzothiazole Based Soft Scorpionate Complexes

详细信息    查看全文

• 作者：Rajeev Rajasekharan-Nair ; Dean Moore ; Alan R. Kennedy ; John Reglinski ; Mark D. Spicer
• 刊名：Inorganic Chemistry
• 出版年：2014
• 出版时间：October 6, 2014
• 年：2014
• 卷：53
• 期：19
• 页码：10276-10282
• 全文大小：377K
• ISSN：1520-510X

文摘

The chemistry of the hydrotris(mercaptobenzothiazolyl)borate anion (Tbz) with metal salts (HgI₂, SbI₃, BiI₃, CoCl₂) is reported in an attempt to probe the stability of the of Tbz ligand once coordinated to hard and soft metals. Complexes of Tbz with bismuth, containing the [Bi(Tbz)I₃]^{鈭?/sup> anion, are stable, but with the other metals this is not the case. Although simple complexes such as [Hg(Tbz)I] and [E(Tbz)I₃]鈭?/sup> (E = Sb, Bi) can be isolated from the reaction mixtures, subsequent reactions lead to ligand modification or decomposition. In the presence of mercury and antimony we observe the formation of a hitherto unseen cationic pentacyclic heterocycle. With cobalt we observe a small quantity of a product which suggests a more complete decomposition. A simple benzothiazole (bz) adduct [Co(bz)₂Cl₂] has been identified, in which the Tbz ligand has disintegrated and the parent heterocycle, mercaptobenzothiazole, has been desulfurized. A rationale for these observations is given.}