An unprecedented up-field shift in the 13 C NMR spectrum of the carboxyl carbons of the lantern-type dinuclear complex TBA[Ru 2 (O 2 CCH 3 ) 4 Cl 2 ] (TBA + = tetra(n-butyl)ammonium cation) - Archive ouverte HAL
Article Dans Une Revue Dalton Transactions Année : 2015

An unprecedented up-field shift in the 13 C NMR spectrum of the carboxyl carbons of the lantern-type dinuclear complex TBA[Ru 2 (O 2 CCH 3 ) 4 Cl 2 ] (TBA + = tetra(n-butyl)ammonium cation)

Résumé

A large up-field shift (−763 ppm) has been observed for the carboxyl carbons of the dichlorido complex TBA[Ru2(O2CCH3)4Cl2] (TBA+ = tetra(n-butyl)ammonium cation) in the 13C NMR spectrum (CD2Cl2 at 25 °C). The DFT calculations showed spin delocalization from the paramagnetic Ru25+ core to the ligands, in agreement with the large up-field shift.

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Chimie Matériaux Physique [physics]

Rafael Moreigne  : Connectez-vous pour contacter le contributeur

https://hal.science/hal-02626214

Soumis le : mardi 26 mai 2020-16:45:02

Dernière modification le : jeudi 25 avril 2024-10:08:15

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Dates et versions

hal-02626214 , version 1 (26-05-2020)

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Yuya Hiraoka, Takahisa Ikeue, Hiroshi Sakiyama, Frédéric Guégan, Dominique Luneau, et al.. An unprecedented up-field shift in the 13 C NMR spectrum of the carboxyl carbons of the lantern-type dinuclear complex TBA[Ru 2 (O 2 CCH 3 ) 4 Cl 2 ] (TBA + = tetra(n-butyl)ammonium cation). Dalton Transactions, 2015, 44 (30), pp.13439-13443. ⟨10.1039/c5dt01680k⟩. ⟨hal-02626214⟩

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