The enigmatic 1J(CH) coupling constants of allyl-type organometallic compounds

A new attempt has been made to identify the factors responsible for the abnormally small one-bond C, H coupling consts. obsd. for allyl, pentadienyl and heptatrienyl compds. of Li and K. In-plane deformations (widening of the central CCC angle) should have only a small, if not negligible effect. The out-of-plane bending of hydrogen atoms appears to contribute significantly, as probably also does accumulation or polarization of electron d. in conjugated structures. [on SciFinder (R)]


Published in:
Journal of Organometallic Chemistry, 389, 2, 149-57
Year:
1990
Keywords:
Note:
CAN 113:172104 29-2 Organometallic and Organometalloidal Compounds Inst. Chim. Org.,Univ. Lausanne,Lausanne,Switz. Journal 0022-328X written in English. 129840-72-8; 129840-73-9 Role: RCT (Reactant), RACT (Reactant or reagent) (carbon-hydrogen coupling consts. of); 129840-74-0P Role: RCT (Reactant), PREP (Preparation), RACT (Reactant or reagent) (formation, substitution reactions, and carbon-hydrogen coupling consts. of); 3052-45-7; 7329-38-6; 15935-94-1; 29219-35-0; 34041-44-6; 57169-99-0; 59304-72-2; 60647-48-5; 61608-80-8; 73891-68-6; 89703-64-0; 113443-58-6; 129840-75-1; 129840-76-2; 129840-77-3 Role: RCT (Reactant), RACT (Reactant or reagent) (one-bond carbon-hydrogen coupling consts. of, factors responsible for); 77242-43-4P Role: RCT (Reactant), SPN (Synthetic preparation), PREP (Preparation), RACT (Reactant or reagent) (prepn. and elimination reaction of); 17502-34-0P; 26819-49-8P Role: RCT (Reactant), SPN (Synthetic preparation), PREP (Preparation), RACT (Reactant or reagent) (prepn. and oxidn. of); 32360-28-4P; 129840-68-2P; 129840-69-3P; 129840-70-6P; 129840-71-7P Role: SPN (Synthetic preparation), PREP (Preparation) (prepn. of); 2228-98-0P (4-tert-Butyl-1-cyclohexene) Role: RCT (Reactant), SPN (Synthetic preparation), PREP (Preparation), RACT (Reactant or reagent) (prepn., metalation, and subsequent substitution of); 937-05-3; 21862-63-5 Role: RCT (Reactant), RACT (Reactant or reagent) (sulfonylation of)
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