Reactions of monomeric silicon difluoride and silylene with conjugated pentadienes

Journal Article · Sun Oct 01 00:00:00 EDT 1978 · Inorg. Chem.; (United States)

DOI:https://doi.org/10.1021/ic50188a024· OSTI ID:6509633

Siefert, E E; Ferrieri, R A; Zeck, O F; Tang, Y N

Monomeric /sup 31/SiF/sub 2/ formed in a nuclear recoil system reacts with 1,3-butadiene, trans-pentadiene, cis-pentadiene, and 2-methyl-1,3-butadiene to give equivalent amounts of difluorosilacyclopent-3-ene-/sup 31/Si and its methyl derivatives. The singlet to triplet /sup 31/SiF/sub 2/ ratios evaluated from these systems are all around 1:3. Similar equivalence in product yields is also observed for /sup 31/SiH/sub 2/ reactions with 1,3-butadiene and the pentadienes, and the evaluated singlet to triplet ratio from the pentadienes is about 1:6. For each of these two silylenes, the relative reactivities of the various dienes toward them have been measured. Minor steric hindrance exists in most cases to account for the smaller reactivities of the pentadienes. However, a large steric effect has been observed between trans- and cis-pentadienes for their reactivities toward a triplet /sup 31/SiF/sub 2/-donor, indicating a possible direct 1,4-addition process for such /sup 31/SiF-donor complexes.

• Research Organization: Texas A and M Univ., College Station
• OSTI ID: 6509633
• Journal Information: Inorg. Chem.; (United States), Journal Name: Inorg. Chem.; (United States) Vol. 17:10; ISSN INOCA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
CHEMICAL REACTIONS
DIENES
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HYDRIDES
HYDROCARBONS
HYDROGEN COMPOUNDS
ORGANIC COMPOUNDS
PENTADIENES
POLYENES
SILANES
SILICON COMPOUNDS
SILICON FLUORIDES