Characterisation and structure of two Cu(II) mononuclear compounds with 7-azaindole as a ligand that display interesting H-bond properties
✍ Scribed by Gerard A. van Albada; Sharmarke Nur; Maarten G. van der Horst; Ilpo Mutikainen; Urho Turpeinen; Jan Reedijk
- Publisher
- Elsevier Science
- Year
- 2008
- Tongue
- English
- Weight
- 575 KB
- Volume
- 874
- Category
- Article
- ISSN
- 0022-2860
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✦ Synopsis
Two Cu(II) compounds with the ligand 7-azaindole (abbreviated as Haza) have been synthesized and fully characterized by spectroscopy, EPR and X-ray structure analysis. The first compound, Cu 2 Cl 4 (Haza) 6 (1), consists of two different Cu(II) sites, i.e. [Cu(Haza) 2 Cl 3 ] + and [Cu(Haza) 3 Cl] À , both with a distorted square-pyramidal geometry for the Cu(II) ion. A hydrogen bond network exists between N-Cl atoms in each unit and also between the two units. The second compound, [Cu(Haza) 4 F](BF 4 )(H 2 O) (2), in which the fluoride anion is generated from decomposition of BF 4
À anions, has also a distorted square-pyramidal geometry. The structure is stabilized by hydrogen bonds between the N-H groups and the F ions. The water is at a disordered lattice position. Further characterization has been performed using IR, LF and EPR spectroscopy.