Complexing Properties of 3-Substituted-2-(aryl-, methyl)sulfonylamino-4,5,6,7-tetrahydrobenzo[b]thiophenes with Nonferrous Metal Ions in Ammonia Media


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The complexation of 3-substituted-2-(aryl-,methyl)sulfonylamino-4,5,6,7-tetrahydrobenzo[ b]thiophenes with Cu(II), Co(II), and Ni(II) ions in ammonia media was studied. Different types of complexes with Cu(II) ions were found depending on pH: with a ratio of 1: 2 at pH of ~4–5 and 1: 1 at pH of ~ 8–10. For the Co(II) and Ni(II) ions, the formation of 1: 1 complexes at pH of ~9–10 was established. The Cu(II), Co(II), and Ni(II) complexes [Cu(HL)2. 2H2O] and [ML. 2H2O] were separated and identified, and their solubility products were calculated. The effect of the nature of the functional group in the third position of the thiophene ring on the properties of the complexes of reagents with nonferrous metal ions was shown.

作者简介

K. Manylova

Institute of Technical Chemistry, Ural Branch

编辑信件的主要联系方式.
Email: ksenimanilova@mail.ru
俄罗斯联邦, Perm, 614013

L. Chekanova

Institute of Technical Chemistry, Ural Branch

Email: ksenimanilova@mail.ru
俄罗斯联邦, Perm, 614013

P. Pavlov

Perm State National Research University

Email: ksenimanilova@mail.ru
俄罗斯联邦, Perm, 614990

E. Baigacheva

Institute of Technical Chemistry, Ural Branch

Email: ksenimanilova@mail.ru
俄罗斯联邦, Perm, 614013

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