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Synthesis, crystal structure, and1H NMR spectra of a chloride-bridged chain complex of dinuclear ruthenium(II,III) 3,4,5-tri(ethoxy-d5)benzoate

โœ Scribed by Hideaki Ishida; Makoto Handa; Takahisa Ikeue; Jun Taguchi; Masahiro Mikuriya


Book ID
111491406
Publisher
Versita
Year
2010
Tongue
English
Weight
716 KB
Volume
64
Category
Article
ISSN
0366-6352

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โœฆ Synopsis


Abstract

Deuterated dinuclear ruthenium(II,III) 3,4,5-tri(ethoxy-d 5)benzoate, [Ru2{3,4,5-(C2D5O)3C6H2-COO}4Cl]n, was synthesized by a reaction of [Ru2(C2H5COO)4Cl]n and 3,4,5-tri(ethoxy-d 5)benzoic acid and characterized by single-crystal X-ray analysis as well as IR, UV-VIS, and 1H NMR spectra, and compared with those of the undeuterated complex [Ru2{3,4,5-(C2H5O)3C6H2COO}4Cl]n. Single-crystal X-ray analysis showed that chloride ligands bridge the dinuclear ruthenium(II,III) units at the axial positions to form a zigzag chain molecule with the Ru1-Cl-Ru2 angle of 123.82(4)ยฐ. 1H NMR spectra in CD2Cl2 displayed a broad signal attributable to o-H atoms on the phenyl rings of the benzoate ligands from approximately ฮด = 23 to ฮด = 32 at 25ยฐC and several signals from approximately ฮด = โˆ’50 to ฮด = 50 at โˆ’80ยฐC. These spectra show the preservation of the polymeric or oligomeric chain structure in dichloromethane, which is supported by the solution behavior confirmed by the UV-VIS spectra and electronic conductance.


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