Issue 34, 2013

The Goldilocks principle in action: synthesis and structural characterization of a novel {Cu43-OH)4} cubane stabilized by monodentate ligands

Abstract

A {Cu43-OH)4} compound, where four copper(II) and four μ3-bridging oxygen atoms occupy alternate corners of a slightly distorted cube, has been prepared and structurally characterized. This species, formulated as [Cu43-OH)4(Htmpz)8](ClO4)4·1.5Et2O (Htmpz = 3,4,5-1H-trimethyl pyrazole), can be classified as belonging to type I Cu4O4 cubane complexes, and is better described as two CuII–(μ-OH)2–CuII units held together by four long Cu–O bonds. The central distorted cubane core is stabilized by neutral monodentate ligands (Htmpz) and perchlorate anions, as demonstrated by single-crystal X-ray structure analysis. The title compound was obtained by hydrolysis of a dinuclear methoxo-bridged species, [Cu(μ-OCH3)(Htmpz)2]2(ClO4)2, which was prepared by reaction of [Cu(Htmpz)4(ClO4)2] with methanol. All these reactions represent a nice example of the Goldilocks principle in action in coordination chemistry, since each single actor (solvent, counteranion, and ligand) has the “just right” electronic, steric or coordinative properties which determine the fate of the final products.

Graphical abstract: The Goldilocks principle in action: synthesis and structural characterization of a novel {Cu4(μ3-OH)4} cubane stabilized by monodentate ligands

Supplementary files

Article information

Article type
Paper
Submitted
17 Apr 2013
Accepted
26 Jun 2013
First published
11 Jul 2013

Dalton Trans., 2013,42, 12265-12273

The Goldilocks principle in action: synthesis and structural characterization of a novel {Cu43-OH)4} cubane stabilized by monodentate ligands

G. A. Ardizzoia, S. Brenna, S. Durini, B. Therrien and I. Trentin, Dalton Trans., 2013, 42, 12265 DOI: 10.1039/C3DT51017D

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