University of Illinois at Urbana-Champaign
Trispyrazolylborate and Tetramethylcyclopentadienyl Osmium Chemistry: Toward Methane Coordination Complexes
Abstract
dc:descriptionTreatment of H2OsBr6 with 4 equiv. of tetramethylcyclopentadiene (C5Me4H2) in tert-butanol affords [(C 5Me4H)2OsBr]2[Os2Br 8]. The brown color of the salt suggests that the anion adopts an eclipsed conformation (D4h symmetry) and this conclusion has been confirmed by a single-crystal X-ray diffraction experiment. Treatment of [(C5Me 4H)2OsBr]2[Os2Br8] with excess 1,5-cyclooctadiene (cod) in refluxing ethanol gives (C5Me 4H)2Os and [(C5Me4H)2OsBr][Os 2HBr4(cod)2]. An X-ray crystallographic study of the latter compound indicates that the anion adopts a confacial bioctahedral structure in which the hydride ligand and two bromides bridge between the two osmium centers. This anion is the first example of an anionic diosmium complex containing a bridging hydride.
Degree
thesis:*- Name thesis:degree_name
- Ph.D.
- Level thesis:degree_level
- Dissertation
- Discipline thesis:degree_discipline
- Chemistry
- Grantor
- University of Illinois at Urbana-Champaign
- Year dc:date
- 2015
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Dickinson, Paul W.
- Contributors dc:contributor
-
- Girolami, G.S.
Subjects
dc:subject × 1Rights
- Language dc:language
- eng
Identifiers
dc:identifier.*- Identifier
- (MiAaPQ)AAI3223579
- OAI identifier oai:identifier
- oai:www.ideals.illinois.edu:2142/84219