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- Title
Study of $\boldsymbol{\eta}^{\bf 6}$- cyclic $\boldsymbol{\pi} $-perimeter hydrocarbon ruthenium complexes bearing functionalized pyridyl diketones: Isolation of complexes with $\boldsymbol{\kappa}^\textbf{2}$-N∩O and $\boldsymbol{\kappa}^\textbf{4}$-N∩O bonding modes of ligands
- Authors
NONGBRI, SAPHIDABHA; DAS, BABULAL; KOLLIPARA, MOHAN
- Abstract
Chelating mono- and di-pyridyl functionalized β-diketones, viz. 1-phenyl-3-(2-pyridyl) propane-1,3-dione ( pppdH) and 1,3-di(2-pyridyl)propane-1,3-dione ( dppdH) ligands yielded new water soluble η-arene ruthenium(II) complexes of the formulation [(η-arene)Ru(κ-N-O- pppdH)Cl] (arene = CH 1, p-PrCHMe 2, CMe 3) and [(η-arene)Ru(κ-N-O- dppd)Cl] (arene = CH 4, p-PrCHMe 5, CMe 6), as their (complexes 1- 4, 6) PF salt or (complex 5) BF salt. The complexes were obtained by treatment of respective precursors, [(η-arene)Ru(μ-Cl)Cl] (arene = CH, p-PrCHMe, CMe) in 1:2 and 1:1 molar ratio with pppdH and dppdH in the presence of NHPF/NHBF. All the complexes have been characterized on the basis of FT-IR and NMR spectroscopic data as well as by elemental analysis. Molecular structures of representative complexes 2, 5 and 6 have been confirmed by single crystal X-ray diffraction studies. The ' O- C- C- C- O' fragment of the coordinated ligand ( pppdH) is neutral in complexes 1- 3 and that of the dppdH ligand existed as a neutral as well as concomitantly uninegative fashion in complexes 4- 6 due to the delocalization of π-electrons. [Figure not available: see fulltext.]
- Subjects
HYDROCARBONS; RUTHENIUM; METAL complexes; KETONES; PYRIDYL compounds; CHELATES; AROMATIC compounds
- Publication
Journal of Chemical Sciences, 2012, Vol 124, Issue 6, p1365
- ISSN
0974-3626
- Publication type
Article
- DOI
10.1007/s12039-012-0337-y