Issue 2, 2018

Structure and properties of a novel staircase-like decanuclear [Cu II10] cluster supported by carbonate and carboxylate bridges

Abstract

This article describes a novel staircase-like decanuclear copper(II) cluster [CuII10(cpdp)4(CO3)4(CH3OH)2]·3.33CH3OH·7.83H2O (1) (H3cpdp = N,N′-bis[2-carboxybenzomethyl]-N,N′-bis[2-pyridylmethyl]-1,3-diaminopropan-2-ol) composed of a pair of [CuII5] pentamers. In methanol, the reaction of H3cpdp with Cu(NO3)2·3H2O in the presence of K2CO3 leads to the isolation of complex 1. This complex has been characterized by various analytical techniques including single crystal X-ray crystallography. Structural analysis reveals that the two [CuII5] pentameric units are bridged together exclusively by two μ221 carbonate groups. Complex 1 shows a rare μ3211 bridging coordination mode of four benzoate groups of cpdp3− ligands with each bridging among three copper(II) ions. Complex 1 also represents the first example of a carbonate-coordinated decanuclear copper(II) cluster with any class of bridging or non-bridging ligand. Thermal, magnetic, EPR and electrochemical properties of this complex have been discussed. Variable temperature magnetic measurement discloses the antiferromagnetic interactions among the copper(II) ions. Electrochemical investigation of 1 in methanol solution using cyclic voltammetry reveals the presence of one metal-based quasi-reversible reduction at 870 mV (ΔEp = 190 mV).

Graphical abstract: Structure and properties of a novel staircase-like decanuclear [CuII10] cluster supported by carbonate and carboxylate bridges

Supplementary files

Article information

Article type
Paper
Submitted
28 Sep 2017
Accepted
28 Nov 2017
First published
28 Nov 2017

New J. Chem., 2018,42, 1276-1283

Structure and properties of a novel staircase-like decanuclear [CuII10] cluster supported by carbonate and carboxylate bridges

S. Haldar, G. Vijaykumar, L. Carrella, G. T. Musie and M. Bera, New J. Chem., 2018, 42, 1276 DOI: 10.1039/C7NJ03714G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements