Ultraviolet and electron beam curable propenyl-ether silicone release
申请人:General Electric Company
公开号:US05747172A1
公开(公告)日:1998-05-05
Silicone release agents comprising propenyl-ether functionalized silicones exhibit a rapid cationic induce photo-cure. Such propenyl-ether functionalized silicones are synthesized by the hydrosilation of various .alpha.-allyloxy-.omega.-(1-propenoxy) alkanes with various linear and cyclic hydrogen functional siloxanes.
Krompiec; Antoszczyszyn; Urbala, Polish Journal of Chemistry, 2000, vol. 74, # 5, p. 737 - 739
作者:Krompiec、Antoszczyszyn、Urbala、Bieg
DOI:——
日期:——
Synthesis, molecular, spectroscopic and catalytic characterization of ruthenium(II) complexes with pyridine-2-carboxylic acid derivatives ligands
作者:J.G. Małecki、S. Krompiec、A. Maroń、M. Penkala
DOI:10.1016/j.poly.2012.09.021
日期:2012.11
The ruthenium(II) complexes [RuH(CO)(6-OH-py-2-COO)(PPh3)(2)] (1) and [Ru(3-OH-py-2-COO)(2)(FFh(3))(2)] (2) have been prepared in the reactions of [RuHCI(CO)(PPh3)(3)] and [RuCl2(PPh3)(3)] with 6-hydroxy- and 3-hydroxypyridine-2-carboxylic acids. The complexes have been characterized by IR, UV-Vis, NMR spectroscopy and X-ray crystallography. Based on the crystal structures, computational investigations were carried out in order to determine the electronic structures of the complexes. The electronic spectra were calculated with the use of time-dependent DFT methods, and correlated with the molecular orbitals of the complexes. The emission properties of the complexes have been examined and quantum efficiencies equal to 0.084 for the hydride carbonyl complex (1) and 0.046 for complex (2) have been determined. The catalytic activity in the reaction of the double bond migration in 4-allyloxybutan-1-ol for both the complexes was tested. Under properly selected reaction conditions, complex (1) selectively catalyzes double bond migration leading to 1-propenyloxyalcohol. (C) 2012 Elsevier Ltd. All rights reserved.