om950942q_si_001.pdf (1.62 MB)
Novel Dinuclear (μ-Hydrido)(μ-alkylideneamido)ruthenium Complexes, [(η5-C5Me5)Ru]2(μ-L)(μ-H)(μ-NCHR) (R = Me, Et; L = MeCN, Arene), as Precursors of Active Species for Bimetallic Activation. Dehydrogenative Coupling of Ethylene in a Dinuclear Ruthenium Complex
journal contribution
posted on 1996-05-14, 00:00 authored by Ken-ichi Tada, Masaki Oishi, Hiroharu Suzuki, Masako TanakaThe dinuclear ruthenium tetrahydride
[(η5-C5Me5)Ru(μ-H)2]2
reacts with acetonitrile or propionitrile
in the presence of an arene such as toluene or naphthalene to generate the
(μ-hydrido)(μ-alkylideneamido)ruthenium complex
(Cp‘Ru)2(μ-L)(μ-H)(μ-NCHR) (L
=
(arene); Cp‘ = η5-C5Me5).
The reaction of the (μ-alkylideneamido)ruthenium complex with ethylene gives the
bis(ethylene)ruthenium complex
[Cp‘Ru(η2-CH2CH2)]2(μ-H)(μ-NCHCH3), which undergoes
dehydrogenative
coupling of the ethylene ligand to yield the
μ-η2:η2-s-cis-butadiene complex
(Cp‘Ru)2(μ-η2:η2-CH2CHCHCH2)(μ-H)(μ-NCHCH3).