Abstract
AbstractA series of ruthenium(II) complexes with the pyrazolylalkane ligands bis(pyrazol‐1‐yl)methane (BPM) (I) and bis(3,5‐dimethylpyrazol‐1‐yl)methane (dmBPM) (II), and the imidazolylalkane ligand bis(N‐methylimidazol‐2‐yl)methane (BIM) (III) have been synthesised and characterised. The complexes [Ru(N‐N)(CO)2X2] [N‐N = BPM, X = Cl (1a), Br (1b); N‐N = dmBPM, X = Cl (2); N‐N = BIM, X = Cl (3)] were prepared from the stoichiometric reaction of [Ru(CO)2X2]n and the bidentate N‐donor ligand in refluxing methanol. The crystal structure of 2 showed the complex to have octahedral geometry about the ruthenium centre, with the carbonyl and chloride ligands being coordinated cis and trans, respectively. The complex [Ru(BPM)2(CO)(Cl)][BPh4] (4) was prepared from the reaction of RuCl3 and BPM in refluxing DMF, or from the decarbonylation of [Ru(BPM)(CO)2Cl2] (1a) in the presence of BPM and NaBPh4. The NMR spectra of 4 were fully assigned from 2D NMR experiments. The NOESY showed a cis coordination of the chloride and carbonyl ligands, and this was confirmed by single crystal X‐ray diffraction studies. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.