Reactivity of the dimer [{Ru(eta(3):eta(3)-C10H16)(mu-Cl)Cl}(2)] towards diphosphines and diphosphine-monoxides: synthesis and characterization of novel (2,7-dimethylocta-2,6-diene-1,8-diyl)-ruthenium(IV) complexes

摘要

Treatment of complex [Ru(eta(3):eta(3)-C-10 H-16)Cl-2(kappa(1)-P-Ph2PCH2PPh2)] (2) with AgBF4 yields the chelate derivative [Ru(eta(3):eta(3)- C10H16)Cl(kappa(2)-P, P-Ph2PCH2PPh2)][BF4] (3). Attempts to generate species structurally related to 2 by reaction of the bis(allyl)-ruthenium(IV) dimer (1) with diphosphines Ph2P(CH2)(n)PPh2 (n = 2, 3, 4) failed, obtaining instead the dinuclear compounds [{Ru{eta(3):eta(3)-C10H16)Cl-2}(2){mu-Ph2P(CH2)(n) PPh2}] (n = 2 (4a), 3 (4b), 4 (4c)). In contrast, mononuclear neutral species [Ru(eta(3):eta(3)-C10H16)Cl-2{kappa(1)-P-Ph2P(CH2)(n) P(=O)Ph-2] (n = 1 (5a), 2 (5b), 3 (5c), 4 (5d)) have been easily prepared by reaction of 1 with the corresponding diphosphine-monoxide Ph2P(CH2)(n) P(-O)Ph-2 (n = 1, 2, 3, 4). Treatinent of 5a,b with AgBF4 allows the formation of cationic derivatives [Ru(eta(3):eta(3)-C10H16)Cl {kappa(2)-P, O-Ph2P(CH2)(n) P(-O)Ph-2}][BF4] (n = 1 (6a), 2 (6b)). (C) 2002 Elsevier Science B.V. All rights reserved. [References: 41]