Switching off the single-molecule magnet properties of the [CoII(Me6tren)(OH2)]2+ module by complexation with trans-[RuIII(salen)(CN)2]−

Dalice M. Piñero Cruz; Daniel N. Woodruff; Ie-Rang Jeon; Indrani Bhowmick; Mihail Secu; Elizabeth A. Hillard; Pierre Dechambenoit; Rodolphe Clérac

doi:10.1039/C4NJ00452C

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Switching off the single-molecule magnet properties of the [Co^II(Me₆tren)(OH₂)]²⁺ module by complexation with trans-[Ru^III(salen)(CN)₂]⁻†

Dalice M. Piñero Cruz,^ab Daniel N. Woodruff,^ab Ie-Rang Jeon,^ab Indrani Bhowmick,^ab Mihail Secu,^abc Elizabeth A. Hillard,^ab Pierre Dechambenoit^ab and Rodolphe Clérac*^ab

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^a CNRS, CRPP, UPR 8641, Laboratory for “Molecular Materials and Magnetism”, F-33600 Pessac, France
E-mail: clerac@crpp-bordeaux.cnrs.fr
Fax: +33 556845600
Tel: +33 556845650

^b Univ. Bordeaux, CRPP, UPR 8641, F-33600 Pessac, France

^c Moldova State University, Mateevici 60, Chisinau, MD-2009, Republic of Moldova

Abstract

The trinuclear complex [{Co^II(Me₆tren)}₂(μ-NC)₂Ru^III(salen)](NO₃)₃·3CH₃CN·H₂O (2) (salen = N,N′-ethylenebis(salicylideneiminato); Me₆tren = tris((dimethylamino)ethyl)amine) was synthesized by the reaction of trans-(PPh₄)[Ru^III(salen)(CN)₂] and two equivalents of [Co^II(Me₆tren)(OH₂)](NO₃)₂ (1). Magnetic susceptibility measurements of 1 reveal its single-molecule magnet behaviour whilst 2 shows no appreciable slow dynamics of the magnetization even under an applied dc field. A comparison of the electrochemical properties of complex 2 with the trans-(PPh₄)[Ru^III(salen)(CN)₂] precursor reveals anodic shifts of the reduction and oxidation waves. The absorption spectrum of 2 obtained from surface optical reflectivity methods is also reported and discussed.

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DOI: https://doi.org/10.1039/C4NJ00452C
Article type: Paper
Submitted: 25 Mar 2014
Accepted: 28 Apr 2014
First published: 28 Apr 2014
This article is Open Access

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New J. Chem., 2014,38, 3443-3448

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Switching off the single-molecule magnet properties of the [Co^II(Me₆tren)(OH₂)]²⁺ module by complexation with trans-[Ru^III(salen)(CN)₂]⁻

D. M. Piñero Cruz, D. N. Woodruff, I. Jeon, I. Bhowmick, M. Secu, E. A. Hillard, P. Dechambenoit and R. Clérac, New J. Chem., 2014, 38, 3443 DOI: 10.1039/C4NJ00452C

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