Formation of an agostic bond by protonation. Characterization by NMR spectroscopy of ((. mu. -H) sub 3 M sub 3 (. mu. sub 3 -. eta. sup 2 -HCR)(CO) sub 9 )(SO sub 3 CF sub 3 ) (M = Ru, R = Et, CHPhCH sub 2 Ph; M = Os, R = Me)

Journal Article · Wed Aug 01 04:00:00 EDT 1990 · Organometallics; (USA)

DOI:https://doi.org/10.1021/om00158a032· OSTI ID:6379526

Bower, D K; Keister, J B ^[1]

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1. State Univ. of New York, Buffalo (USA)

Protonation of ({mu}-H){sub 3}M{sub 3}({mu}{sub 3}-CX)(CO){sub 9} (M = Ru, X = Et, CHPhCH{sub 2}Ph; M = Os, X = Me) in HSO{sub 3}CF{sub 3} solution yields (({mu}-H){sub 3}M{sub 3}({mu}{sub 3}-{eta}{sup 2}-HCR)(CO){sub 9}){sup +}, in which the proton has been shown by {sup 1}H and {sup 13}C NMR spectroscopy to add across a C-M edge. The agostic hydrogen is fluxionally exchanged among all three C-M bonds but does not exchange with the bridging hydrides. These protonated clusters prove to be more susceptible to reductive elimination of CH{sub 3}X than their neutral precursors. When M = Ru and X = H, Cl, Br, and Ph, addition of acid causes immediate cluster decomposition. When X = Ph and CHPhCH{sub 2}Ph, the reductive-elimination products toluene and 1,2-diphenylpropane have been identified.

• OSTI ID: 6379526
• Journal Information: Organometallics; (USA), Journal Name: Organometallics; (USA) Vol. 9:8; ISSN 0276-7333; ISSN ORGND
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
COMPLEXES
DATA
DATA ANALYSIS
EXPERIMENTAL DATA
INFORMATION
MEASURING INSTRUMENTS
MEASURING METHODS
NMR SPECTRA
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
OSMIUM COMPLEXES
RUTHENIUM COMPLEXES
SPECTRA
STRUCTURAL CHEMICAL ANALYSIS
TRANSITION ELEMENT COMPLEXES