Ru-Zn heteropolynuclear complexes containing a dinucleating bridging ligand: Synthesis, structure, and isomerism

Lorenzo Mognon, Jordi Benet-Buchholz, S. M.Wahidur Rahaman, Carles Bo, Antoni Llobet

Research output: Contribution to journalArticleResearchpeer-review

8 Citations (Scopus)

Abstract

© 2014 American Chemical Society. Mononuclear complexes in- and out-[Ru(Cl)(trpy)(Hbpp)]+ (in-0, out-0; Hbpp is 2,2′-(1H-pyrazole-3,5-diyl)dipyridine and trpy is 2,2′:6′,2″-terpyridine) are used as starting materials for preparation of Ru-Zn heterodinuclear out-{[Ru(Cl)(trpy)][ZnCl2](μ-bpp)} (out-2) and heterotrinuclear in,in- and out,out-{[Ru(Cl)(trpy)]2(μ-[Zn(bpp)2])}2+ (in-3, out-3) constitutional isomers. Further substitution of the Cl ligand from the former complexes leads to Ru-aqua out,out-{[Ru(trpy)(H2O)]2(μ-[Zn(bpp)2])}4+ (out-4) and the oxo-bridged Ru-O-Ru complex in,in-{[RuIII(trpy)]2(μ-[Zn(bpp)2(H2O)]μ-(O)}4+ (in-5). All complexes are thoroughly characterized by the usual analytical techniques as well as by spectroscopy by means of UV-vis, MS, and when diamagnetic NMR. CV and DPV are used to extract electrochemical information and monocrystal X-ray diffraction to characterize complexes out-2, in-3, out-3, and in-5 in the solid state. Complex out-3 photochemically isomerizes toward in-3, as can be observed by NMR spectroscopy and rationalized by density functional theory based calculations.
Original languageEnglish
Pages (from-to)12407-12415
JournalInorganic Chemistry
Volume53
Issue number23
DOIs
Publication statusPublished - 1 Dec 2014

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