Bimetallic transition metal-ruthenium(II) complexes containing bridging bipyrimidine ligands
authors Nunes, CD; Pillinger, M; Hazell, A; Jepsen, J; Santos, TM; Madureira, J; Lopes, AD; Goncalves, IS
nationality International
journal POLYHEDRON
author keywords ruthenium; N ligand; bridging ligands; heterometallic complexes; EXAFS spectroscopy
keywords LEWIS BASE ADDUCTS; RUTHENIUM(II) COMPLEXES; SPECTROSCOPY; REDOX; EXAFS; NMR
abstract The ruthenium(II) complex [Ru([14]aneS(4))(bpym)](BF4)(2) ([14]aneS(4) = 1,4,8,11-tetrathiacyclotetradecane, bpym = 2,2-bipyrimidine) has been prepared by substitution of the labile acetonitrile ligands in the complex [Ru([14]aneS(4))(CH3CN)(2)](BF4)(2) by bpym. Both the precursor acetonitrile complex and the polypyridyl complex were characterised by Ru K-edge EXAFS spectroscopy. In addition, the crystal structures of [Ru([14]aneS(4))(bpym)](X)(2) (X = BF4, PF6) were determined by X-ray diffraction. The bpym-bridged bimetallic complexes [{Ru([14]aneS(4))}(2)(bpym)](BF4)(4) and [{([14]aneS(4))Ru}(bpym){ReO3Me}](BF4)(2) were prepared using the ruthenium(II) monomeric bpym complex as starting material. In the case of the complex containing methyltrioxorhenium(VII) coordination of both metal centres to the bidentate bridging ligand was supported by a combination of Ru K-edge and Re L-edge XAFS spectroscopy, in addition to H-1 NMR. (C) 2003 Elsevier Science Ltd. All rights reserved.
publisher PERGAMON-ELSEVIER SCIENCE LTD
issn 0277-5387
year published 2003
volume 22
issue 20
beginning page 2799
ending page 2807
digital object identifier (doi) 10.1016/S0277-5387(03)00397-8
web of science category Chemistry, Inorganic & Nuclear; Crystallography
subject category Chemistry; Crystallography
unique article identifier WOS:000185358000006
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journal impact factor 2.343
5 year journal impact factor 1.894
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