6531-45-9Relevant articles and documents
Synthesis, Structure, and Reactivity of the Ethyl Yttrium Metallocene, (C5Me5)2Y(CH2CH3), Including Activation of Methane
MacDonald, Matthew R.,Langeslay, Ryan R.,Ziller, Joseph W.,Evans, William J.
, p. 14716 - 14725 (2015/12/09)
(C5Me5)2Y(μ-Ph)2BPh2, 1, reacted with ethyllithium at -15°C to make (C5Me5)2Y(CH2CH3), 2, which is thermally unstable at room temperature and formed the C-H bond activation product, (C5Me5)2Y(μ-H)(μ-n1:n5-CH2C5Me4)Y(C5Me5), 3, containing a metalated (C5Me5)1- ligand. Spectroscopic evidence for 2 was obtained at low temperature, and trapping experiments with iPrNCNiPr and CO2 gave the Y-CH2CH3 insertion products, (C5Me5)2Y[iPrNC(Et)NiPr-k2N,N′], 4, and [(C5Me5)2Y(μ-O2CEt)]2, 5. Although 2 is highly reactive, low temperature isolation methods allowed the isolation of single crystals which revealed an 82.6(2)°Y-CH2-CH3 bond angle consistent with an agostic structure in the solid state. Complex 2 reacted with benzene and toluene to make (C5Me5)2YPh, 7, and (C5Me5)2YCH2Ph, 8, respectively. The reaction of 2 with [(C5Me5)2YCl]2 formed (C5Me5)2Y(μ-Cl)(μ-n1:n5-CH2C5Me4)Y(C5Me5) in which a (C5Me5)1- ligand was metalated. C-H bond activation also occurred with methane which reacted with 2 to make [(C5Me5)2YMe]2, 9.
Relationship between the Electronic Structure of Acrylic and Methacrylic Acid and the Rates of Hydrogenation of Their Salts on Pt Black
Volkova, L. D.,Vyaznikovtseva, O. V.,Gabdrakipov, V. Z.,Sokol'skii, D. V.
, p. 1650 - 1652 (2007/10/02)
We have studied the hydrogenation of the alkali metal salt of acrylic and methacrylic acid on platinum black.The relative reactivities, which are interest in calculations of the electronic structure of acids, have been determined by the CNDO/2 method.