Add time:09/29/2019         Source:sciencedirect.com

A series of ruthenium(II) mixed-ligand complexes containing 2(1H)-pyridinethione (C5H5NS) or 1-hydroxypyridine-2-thione (C5H5NOS) and bis(diphenylphosphino) alkanes, Ph2P(CH2)mPPh2 (m = 1–4), and a tritertiaryphosphine, (Ph2PCH2CH2)2PPh (triphos), of stoichiometry: RuA2L (HA = C5H5NS or C5H5NOS; L = a di- or tri-tertiary phosphine) have been prepared. The complexes were obtained by the reactions of (i) RuLnCl2 [n = 2 for L (m = 1, 3) or n = 1.5 for L (m = 4)] with HA ligands in the presence of triethylamine, (ii) RuA2(PPh3)2 with L (m = 2; triphos; HA = C5H5NS), or (iii) RuCl2(PPh3)3 with C5H5NOS and L (m = 2; triphos) in the presence of triethylamine and characterized using analytical data, IR, far-IR, UV-vis, 1H and 13C NMR, and cyclic voltammetry. The geometry about RuII is distorted octahedral with SRuS in the bent trans-configuration (SRuS, ca 155°), with phosphines occupying cis-positions.

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