Kay A. Youngdahl
University of Washington
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Kay A. Youngdahl.
Journal of Molecular Catalysis | 1988
Claude Biran; Yigal D. Blum; Robert Glaser; Doris S. Tse; Kay A. Youngdahl; Richard M. Laine
Abstract Preliminary studies on transition metal-catalyzed dehydrocoupling of Si-H bonds with H-N bonds to form Si-N bonds, silazanes and H 2 are described. A number of transition metal complexes have been tested as catalyst precursors for the dehydrocoupling reaction. Of these, Ru 2 (CO) 8 -(Et 3 Si) 2 proved to be the most active homogeneous catalyst, and Pd particles produced by the in situ reduction of Pd(OAc) 2 were the most active heterogeneous catalysts. Kinetic studies of the ruthenium-catalyzed reaction of Et 3 SiH with primary amines, RNH 2 (R = n-Pr, n-Bu, s-Bu and t-Bu) were run at 70 °C in THF. The effects of changes in Et 3 SiH, amine and catalyst concentrations on rates of reaction were examined. The data indicate that the dehydrocoupling catalytic cycle involves an extremely complex set of equilibria wherein the rate-determining step is dependant on the steric requirements of the amine and fragmentation of the starting Ru 3 (CO) 12 cluster.
MRS Proceedings | 1988
Kay A. Youngdahl; Richard M. Laine; Richard A. Kennish; Terrence R. Cronin; Gilbert Balavoine
Abstract : Pyrolysis of a set of silicon and nitrogen substituted polysilazanes are conducted under a set of standard conditions (5 degrees C/min to 900 degrees C in a nitrogen atmosphere). The apparent ceramic compositions and ceramic yields for pyrolyzed samples of the polysilazanes (Ph(H)SiNH)x, (C6H13(H)SiNH)x, (Me(H)SiNH)x, and (H2SiNMe)x are determined. Preliminary conclusions concerning structure/reactivity relationships are discussed based on the pyrolysis results. Keywords: Polysilazanes, Structure/reactivity relationships, Catalysis, Synthesis, Pyrolysis, New catalytic reactions. Reprints.
Chemistry of Materials | 1990
Richard M. Laine; Jeffrey A. Rahn; Kay A. Youngdahl; Florence Babonneau; Martin L. Hoppe; Zhi Fan Zhang; John F. Harrod
Archive | 1991
Richard M. Laine; Kay A. Youngdahl; Paola Nardi
Journal of Materials Research | 1991
Richard M. Laine; Kay A. Youngdahl; Richard A. Kennish; Martin L. Hoppe; Zhi Fan Zhang; Jean Ray
Archive | 1988
Richard M. Laine; Kay A. Youngdahl
Archive | 1990
Richard M. Laine; Jeffrey A. Rahn; Kay A. Youngdahl; John F. Harrod
Applied Organometallic Chemistry | 1993
Kay A. Youngdahl; Martin L. Hoppe; Richard M. Laine; Jeffrey A. Rahn; John F. Harrod
MRS Proceedings | 1990
Richard M. Laine; Kay A. Youngdahl; Richard A. Kennish; Martin L. Hoppe; Zhi-Fan Zhang; D. Jean Ray
S.A.M.P.E. quarterly | 1988
William M. Carty; Gregory C. Stangle; Richard M. Laine; Kay A. Youngdahl; Mehmet Sarikaya; Ilhan A. Aksay