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Hetero‐ and homo‐leptic Ru(II) catalyzed synthesis of cyclic carbonates from CO 2 ; Synthesis, spectroscopic characterization and electrochemical properties
Author(s) -
Kilic Ahmet,
Ulusoy Mahmut,
Durgun Mustafa,
Tasci Zeynep,
Yilmaz Ismail,
Cetinkaya Bekir
Publication year - 2010
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.1638
Subject(s) - homoleptic , chemistry , ligand (biochemistry) , cyclic voltammetry , metal , ruthenium , catalysis , electrochemistry , triphenylene , molar conductivity , medicinal chemistry , inorganic chemistry , stereochemistry , organic chemistry , molecule , electrode , biochemistry , receptor
Based on the a ligand BDPPZ [(9a,13a‐dihydro‐4,5,9,14‐tetraaza‐benzo[b]triphenylene‐11‐yl)‐phenyl‐methanone] (1) and its polypyridyl hetero‐ and homoleptic Ru(II) metal complexes, [Ru(bpy) 2 L](PF 6 ) 2 (2), [Ru(phen) 2 L](PF 6 ) 2 (3), [Ru(dafo) 2 L](PF 6 ) 2 (4), [Ru(dcbpy) 2 L](PF 6 ) 2 (5) and [RuL 3 ](PF 6 ) 2 (6) (where, L = ligand, bpy = 2,2′‐bipyridine, phen = 1,10‐phenantroline, dafo = 4,5‐diazafluoren‐9‐one and dcbpy = 3,3′‐dicarboxy‐2,2′‐bipyridine), have been synthesized and characterized by elemental analysis, UV–vis, FT‐IR, 1 H and 13 C‐NMR spectra (for ligand), molar conductivity measurements and X‐ray powder techniques. The electrochemical parameters of the substituted ligand and its polypyridyl hetero‐ and homoleptic Ru(II) metal complexes are reported by cyclic voltammetry. UV–vis spectroscopy is used to compare the differences between the conjugated π systems in this ligand and its Ru(II) metal complexes. The polypyridyl hetero‐ and homoleptic Ru(II) metal complexes also tested as catalysts for the formation of cyclic organic carbonates from carbon dioxide and liquid epoxides which served as both reactant and solvent. The results showed that the [Ru(L) 3 ](PF 6 ) 2 (6) complex is more efficient than the other Ru(II) complexes for the formation of cyclic organic carbonates from carbon dioxide. Copyright © 2010 John Wiley & Sons, Ltd.