Issue 31, 2023

From Cu(i) and Cu(i)–Cu(ii) mixed-valence clusters to 2D Cu(ii) and Cu(i) coordination polymers supported by a flexible bis-tetrazole organosulfur ligand

Abstract

Three coordination compounds from the reaction of copper(II) bromide with the flexible bis-tetrazole organosulfur ligand, 1,2-bis(1-methyl-1H-tetrazole-5-ylthio)ethane (bmtte) have been isolated and characterised. The identification of polymeric 2Cu2Br4(bmtte) (1), trinuclear [Cu3Br4(bmtte)2] (2) and tetranuclear [Cu2Br2(bmtte)]2 (3) compounds shows that the reaction conditions have a significant influence on the structure of the complexes formed. Moreover, two polymorphs of the 2D Cu(II)-coordination polymer 1 have been isolated and these crystallise in the monoclinic C2/m (1m) and the triclinic P[1 with combining macron] (1t) space groups. The thermal stabilities and behaviour in aqueous media of compounds 1–3 were investigated along with the reactivity of compound 2 with CuBr2 and KI. The solid-state reaction between mixed-valence compound 2 with KI or the direct reaction of CuI and bmtte under microwave irradiation allowed the preparation of the polymeric 2Cu4I4(bmtte)2 (4). The redox behaviour of complexes 2 and 3 was analysed by cyclic voltammetry.

Graphical abstract: From Cu(i) and Cu(i)–Cu(ii) mixed-valence clusters to 2D Cu(ii) and Cu(i) coordination polymers supported by a flexible bis-tetrazole organosulfur ligand

Supplementary files

Article information

Article type
Paper
Submitted
23 May 2023
Accepted
17 Jul 2023
First published
18 Jul 2023
This article is Open Access
Creative Commons BY-NC license

Dalton Trans., 2023,52, 10975-10986

From Cu(I) and Cu(I)–Cu(II) mixed-valence clusters to 2D Cu(II) and Cu(I) coordination polymers supported by a flexible bis-tetrazole organosulfur ligand

O. Gómez-Paz, R. Carballo, A. B. Lago, I. Prieto and E. M. Vázquez-López, Dalton Trans., 2023, 52, 10975 DOI: 10.1039/D3DT01556D

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