209,656 research outputs found
From olefin metathesis to organoruthenium homogeneous catalysis : synthesis, applications and mechanistic understanding
No full textOlefin metathesis is a valuable synthetic tool, widely used in several fields of science. Due to the importance of this transformation several contributions have been made in this field in order to understand mechanistic aspects, reactivity and applicability of this process.
In this topic, ruthenium indenylidene complexes have shown great activity and stability in metathesis, making them very valuable pre-catalysts. However, several aspects of these pre-catalysts have not been evaluated yet. For example, even though reports of active second generation ruthenium indenylidene complexes bearing bulky N-heterocyclic carbenes are present in the literature, no studies have been done to understand how steric hindrance affects the process. For these reasons, [RuCl₂(IPr*)(PPh₃)(3-phenylindenylidene)] (IPr*-PPh₃) and [RuCl₂(IPr*)(Py)(3-phenylindenylidene)] (IPr*-Py), bearing the very bulky ligand, IPr* have been synthesised and compared with [RuCl₂(IPr)(PPh₃)(3-phenylindenylidene)] (IPr-PPh₃) and the new [RuCl₂(IPr)(Py)(3-phenylindenylidene)] (IPr-Py).
Another important aspect, presented in this thesis, is the investigation of the stability of indenylidene pre-catalysts in alcohol solvents. Surprisingly, several different decomposition processes occur depending on the starting complex and the alcohol used. Mechanistic investigation into this decomposition, allowed us to develop a better understanding of this process, and to predict the decomposition product based on the environment. In particular, this study revealed that [RuCl(η⁵-3-phenylindenyl)(PPh₃)₂] (Eta-5) is accessed from [RuCl₂(3-phenylindenylidene)(PPh₃)₂] (M₁₀) via a novel indenylidene to η⁵-indenyl rearrangement. This formal decomposition product has been found to be active in at least 20 different catalytic transformations, rendering it a versatile catalytic tool
Nolan, T M, VX64553
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/407957Surname: NOLAN. Given Name(s) or Initials: T M. Military Service Number or Last Known Location: VX64553. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 31696.236986
Item: [2016.0049.40232] "Nolan, T M, VX64553
Nolan, M J, 7188
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/407939Surname: NOLAN. Given Name(s) or Initials: M J. Military Service Number or Last Known Location: 7188. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 55177.236950
Item: [2016.0049.40214] "Nolan, M J, 7188
"Kinder möchten mit Kindern zusammen sein, nicht mit Erwachsenen" (Interview mir Claudia M. Roebers, geführt von Viriginia Nolan)
No full textEntwicklungspsychologin Claudia M. Roebers erklärt, inwiefern Frühförderung oft falsch verstanden wird, was an unseren Schulen schiefläuft und warum Erziehende heute einen schwereren Job haben als vor 30 Jahren
Marriage record of Fitzgerald, Joseph M. and Nolan, Tresa M.
No full textMarriage license for Joseph M. Fitzgerald and Tresa M. Nolan. W.S. Cathcart was the Notary Public
Funeral of Monsignor Robert M. Nolan
No full textBody of Monsignor Robert M. Nolan, in front of the altar of Saint Patrick\u27s Catholic Church, Fort Worth, Texas.https://mavmatrix.uta.edu/specialcollections_startelegram1930s/6264/thumbnail.jp
Funeral of Monsignor Robert M. Nolan
No full textAltar boys, priests, and pallbearers carry the bier of Monsignor Robert M. Nolan into Saint Patrick\u27s Catholic Church, Fort Worth, Texas.https://mavmatrix.uta.edu/specialcollections_startelegram1930s/6265/thumbnail.jp
Monsignor Robert M. Nolan funeral services
No full textMonsignor Robert M. Nolan funeral services, Saint Patrick\u27s Catholic Church, procession of altar boys and priests.https://mavmatrix.uta.edu/specialcollections_startelegram1930s/6266/thumbnail.jp
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