Preparation and structure of oxo-rhenium(V) complexes with 7-azaindole

• Anne-Marie Lebuis

• André L. Beauchamp

抄録

Four Re(V) oxo compounds were obtained from 7-azaindole (Haza) and ReOCl 3 (PPh 3 ) 2 : the oxo-bridged dimer Re 2 O 3 Cl 4 (Haza) 4 (1), the oxo–ethoxo monomers ReO(OEt)Cl 2 (Haza) 2 (2) and ReO(OEt)Cl 2 (Haza)(PPh 3 ) (3), and the dioxo [ReO 2 (Haza) 4 ]Cl salt (4a). [ReO 2 (Haza) 4 ]I (4b) was also prepared from ReO 2 I(PPh 3 ) 2 . The ReO(OEt)Cl 2 (Haza) 2 complex was shown by X-ray diffraction (C2/c, a = 16.292, b = 9.395, c = 12.104 Å, β = 101.47°, R = 0.041) to consist of individual molecules of the trans-trans isomer in which azaindole is N7-bonded. Crystals of [Formula: see text] (C2/m a = 15.422, b = 13.055, c = 9.086 Å, β = 91.13°, R = 0.059) contain well separated Cl − anions and trans-dioxo cations. The N7-bonded azaindole ligands are held parallel to the O=Re=O direction by intramolecular [Formula: see text] hydrogen bonds, but the relative orientation of the four ligands cannot be determined because of disorder. Characteristic Re—oxygen vibrations are observed in infrared for each type of compounds. The 1 H and 13 C NMR spectra are discussed in relation with the azaindole binding mode.

収録刊行物

• Canadian Journal of Chemistry

  Canadian Journal of Chemistry 71 (12), 2060-2069, 1993-12-01

  Canadian Science Publishing

キーワード

• Organic Chemistry
• General Chemistry
• Catalysis

詳細情報

• CRID: 1360855568867191936
• NII論文ID: 30021731360
• DOI: 10.1139/v93-256
• ISSN: 14803291
• ISSN: 00084042
• Web Site: http://www.nrcresearchpress.com/doi/pdf/10.1139/v93-256
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