Abstract/Details

Metal catalyzed activation of E-hydrogen bonds, E = silicon, germanium, tin


2011 2011

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Abstract (summary)

A new catalytic system involving iron and molybdenum complexes of the type: (η5-C5H5)M(CO) nMe, and (η5-C5H5)M(CO) n-1(PPh3)Me, M = Fe, n = 2 (1); M = Mo, n = 3 (2), were used to catalyze the dehydrogenative dimerization of di-t-butyltin dihydride to 1,2-dihydro-1,1,2,2-tetra- t-butyl-distannane, tBu2HSn-SnH tBu2 both photochemically and thermally. The thermal catalytic process is much more efficient than the photochemical process and the Mo catalysts are relatively more active than the corresponding Fe catalysts. A mechanism involving oxidative addition and reductive elimination steps has been suggested involving the intermediacy of (η5-C5H5 )M(CO)nSntBu2H. This complex was observed during the reaction and was independently synthesized and completely characterized by single crystal X-ray structural analysis and 13C, 119Sn and 1H NMR spectroscopy. It was also shown to be catalytically active for dehydrogenative dimerization, Scheme 1.1.*

*Please refer to dissertation for diagrams.

Indexing (details)


Subject
Inorganic chemistry
Classification
0488: Inorganic chemistry
Identifier / keyword
Pure sciences; Activation; Bond activation; Metal catalysts; Transition metals
Title
Metal catalyzed activation of E-hydrogen bonds, E = silicon, germanium, tin
Author
Arias Ugarte, Renzo Nelson
Number of pages
222
Publication year
2011
Degree date
2011
School code
0459
Source
DAI-B 73/05, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
9781267124593
Advisor
Pannell, Keith H.
Committee member
Michael, Katja; Nunez, Jose; Pannell, Keith H.; Sharma, Hemant K.; Weinert, Charles S.
University/institution
The University of Texas at El Paso
Department
Chemistry
University location
United States -- Texas
Degree
Ph.D.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
3490984
ProQuest document ID
919014479
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/919014479
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