89958-50-9Relevant academic research and scientific papers
TRANSITION METAL COMPLEXES CORRESPONDING TO THE INSERTION INTO A GROUP IVB ELEMENT-CARBON BOND II. PREPARATION OF MANGANESE COMPLEXES. MECHANISM OF THE DEINSERTION REACTION
Colomer, Ernesto,Corriu, Robert J. P.,Vioux, Andre
, p. 107 - 120 (1984)
The anions 5-CH3C5H4)(CO)2(R3M)Mn>- (M = Si, Ge; R3 = Ph3, (1-C10H7)PhMe) react with alkyl, alkenyl or benzyl halides affording the neutral complexes (η5-CH3C5H4)(CO)2(R')(R3M)Mn.These new compounds possess a piano stool geometry with the CO ligands in a diagonal (trans) arrangement.Their thermal reaction with PPh3 leads to the formation of R3MR' (corresponding formally to the deinsertion reaction) and (R3MH (corresponding to the migration of the R' group to the cyclopentadienyl ring).A mechanism for these competitive reactions is proposed.
Transition-metal complexes corresponding to the insertion into a group 4B element-carbon bond. 3. Reactivity of complexes with unsaturated carbon-carbon bonds. Crystal structure of (η5-cyclopentadienyl)(triphenylgermyl) (η3-hexenyl) nitrosylmolybdenum
Carré, Francis,Colomer, Ernesto,Corriu, Robert J. P.,Vioux, André
, p. 970 - 977 (2008/10/08)
Anions of the type [(η5-C5H5)(CO)(L)(M4BPh 3)MT]- (L = CO, NO; M4B - Si, Ge, Sn; MT = Mn, Mo, W) react with allyl halides, affording neutral σ-bonded alkenyl derivatives. These new complexes can rearrange to η3-allyl complexes and also lose (allyl)M4B to give η2-allyl complexes. According to the nature of both the transition metal and the group 4B metal η1, η3, or η2 complexes are obtained. A mechanism for these successive reactions is proposed. Butenyl and hexenyl iodides also react with the anions, affording η1 complexes that can eliminate CO and rearrange to a η3 ligand as shown by X-ray structure determination.
