Synthesis and Characterisation of Diruthenium Paddlewheel Compounds Bearing 2,6-Di(p-tolyl)benzoate Ligands

Raquel Gracia, Nathan J. Patmore

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The mixed carboxylate diruthenium complexes trans-[Ru2II,III(O2CCH3)2(O2CAr)2Cl] (I) and trans-[Ru2II,II(O2CCH3)2(O2CAr)2] (II) (O2CAr = 2,6-di(p-tolyl)benzoate) have been synthesised along with [Ru2II,III(O2CAr)4Cl] (III) and the homoleptic complex [Ru2II,II(O2CAr)4] (IV). The structures trans-[Ru2(O2CCH3)2(O2CAr)2Cl(thf)]·(thf) and [Ru2(O2CAr)4Cl(η1-CH2Cl2)] were determined by X-ray crystallography, and display the expected paddlewheel arrangement of the carboxylate ligands around the diruthenium core. The structure of III is a rare example of a structurally characterised dichloromethane complex, highlighting the Lewis acidic nature of the diruthenium axial position. The bulky -O2CAr ligand protects the axial positions from intermolecular interactions in the absence of strong nucleophiles for III and IV, and the effect this has on the electronic structure of the diruthenium core in these complexes was investigated by cyclic voltammetry, electronic absorption spectroscopy and magnetic susceptibility studies.

Original languageEnglish
Pages (from-to)339-350
Number of pages12
JournalJournal of Cluster Science
Volume21
Issue number3
Early online date29 Apr 2010
DOIs
Publication statusPublished - 1 Sep 2010
Externally publishedYes

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Bearings (structural)
Benzoates
carboxylates
Ligands
magnetic permeability
Nucleophiles
ligands
Methylene Chloride
nucleophiles
X ray crystallography
X Ray Crystallography
Dichloromethane
synthesis
Magnetic susceptibility
Absorption spectroscopy
Cyclic voltammetry
crystallography
Electronic structure
Spectrum Analysis
absorption spectroscopy

Cite this

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title = "Synthesis and Characterisation of Diruthenium Paddlewheel Compounds Bearing 2,6-Di(p-tolyl)benzoate Ligands",
abstract = "The mixed carboxylate diruthenium complexes trans-[Ru2II,III(O2CCH3)2(O2CAr)2Cl] (I) and trans-[Ru2II,II(O2CCH3)2(O2CAr)2] (II) (O2CAr = 2,6-di(p-tolyl)benzoate) have been synthesised along with [Ru2II,III(O2CAr)4Cl] (III) and the homoleptic complex [Ru2II,II(O2CAr)4] (IV). The structures trans-[Ru2(O2CCH3)2(O2CAr)2Cl(thf)]·(thf) and [Ru2(O2CAr)4Cl(η1-CH2Cl2)] were determined by X-ray crystallography, and display the expected paddlewheel arrangement of the carboxylate ligands around the diruthenium core. The structure of III is a rare example of a structurally characterised dichloromethane complex, highlighting the Lewis acidic nature of the diruthenium axial position. The bulky -O2CAr ligand protects the axial positions from intermolecular interactions in the absence of strong nucleophiles for III and IV, and the effect this has on the electronic structure of the diruthenium core in these complexes was investigated by cyclic voltammetry, electronic absorption spectroscopy and magnetic susceptibility studies.",
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Synthesis and Characterisation of Diruthenium Paddlewheel Compounds Bearing 2,6-Di(p-tolyl)benzoate Ligands. / Gracia, Raquel; Patmore, Nathan J.

In: Journal of Cluster Science, Vol. 21, No. 3, 01.09.2010, p. 339-350.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Synthesis and Characterisation of Diruthenium Paddlewheel Compounds Bearing 2,6-Di(p-tolyl)benzoate Ligands

AU - Gracia, Raquel

AU - Patmore, Nathan J.

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AB - The mixed carboxylate diruthenium complexes trans-[Ru2II,III(O2CCH3)2(O2CAr)2Cl] (I) and trans-[Ru2II,II(O2CCH3)2(O2CAr)2] (II) (O2CAr = 2,6-di(p-tolyl)benzoate) have been synthesised along with [Ru2II,III(O2CAr)4Cl] (III) and the homoleptic complex [Ru2II,II(O2CAr)4] (IV). The structures trans-[Ru2(O2CCH3)2(O2CAr)2Cl(thf)]·(thf) and [Ru2(O2CAr)4Cl(η1-CH2Cl2)] were determined by X-ray crystallography, and display the expected paddlewheel arrangement of the carboxylate ligands around the diruthenium core. The structure of III is a rare example of a structurally characterised dichloromethane complex, highlighting the Lewis acidic nature of the diruthenium axial position. The bulky -O2CAr ligand protects the axial positions from intermolecular interactions in the absence of strong nucleophiles for III and IV, and the effect this has on the electronic structure of the diruthenium core in these complexes was investigated by cyclic voltammetry, electronic absorption spectroscopy and magnetic susceptibility studies.

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