Journal
JOURNAL OF ORGANOMETALLIC CHEMISTRY
Volume 751, Issue -, Pages 493-500Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jorganchem.2013.10.024
Keywords
isonido-Ruthenacarboranes; pi-Arene complexes; Thermal rearrangement; Mechanisms; X-ray structures; NMR spectroscopy; DFT calculations
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Funding
- Russian Foundation for Basic Research [12-0300102]
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The heating of the isomeric [1-(eta(6)-1,4-Me2C6H4)-3-Cl-isonido-1,2,4-RuC2B8H9] (1) or [1-(eta(6)-1,4-Me2C6H4)-6-Cl-isonido-1,2,4-RuC2B8H9] (2) complexes (i) in a 1,4-Me2C6H4 solution at 85 degrees C as well as (ii) in a melt at 165 degrees C afforded mixtures of isomeric isonido-and closo-ruthenacarboranes, which differ in the positions of the chlorine substituent and the carbon atoms in the cage ligand. Structures of all new isomeric complexes have been established on the basis of analytical and multinuclear NMR data and were characterized by single-crystal X-ray diffraction studies. Also presented are the results of the quantum chemical calculations for the ground and the transition states of the reaction (i), which proved to be basis for the suggestion of interconversion scheme for these isomers. (C) 2013 Elsevier B.V. All rights reserved.
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