i. ß-hydride elimination of 1-butene from [Fe(n³-cp)("Bu)(PH3)2]. ii. Oxidative addition of methane to [PtCl3(PPh3)]¯. i
Posted: Mon May 23, 2022 2:09 am
- I Ss Hydride Elimination Of 1 Butene From Fe N Cp Bu Ph3 2 Ii Oxidative Addition Of Methane To Ptcl3 Pph3 I 1 (39.24 KiB) Viewed 47 times
- I Ss Hydride Elimination Of 1 Butene From Fe N Cp Bu Ph3 2 Ii Oxidative Addition Of Methane To Ptcl3 Pph3 I 2 (39.24 KiB) Viewed 47 times
- I Ss Hydride Elimination Of 1 Butene From Fe N Cp Bu Ph3 2 Ii Oxidative Addition Of Methane To Ptcl3 Pph3 I 3 (72.06 KiB) Viewed 47 times
i. ß-hydride elimination of 1-butene from [Fe(n³-cp)("Bu)(PH3)2]. ii. Oxidative addition of methane to [PtCl3(PPh3)]¯. iii. Production of propane via o-bond metathesis between methane and [Sc(n5-cp)2Et]. iv. Reductive elimination of isobutane from [Cr(pr)Me(n¹-C4H6)(PPh3)2]. v. Transmetallation between [Pd(C6H5)Br(PPh3)2] and ZnClMe. N.B. cp = cyclopentadienyl, C5H5
b. Suggest a modification to the complex in reaction (i) that could prevent this B-hydride elimination process, briefly explaining your reasoning [2 marks] c. Draw the mechanism of oxidative addition shown in reaction (ii) including all intermediates and transition states. [2 marks] d. Explain why the o-bond metathesis reaction occurs in reaction (iii) rather than an oxidative addition process. [2 marks] e. Provide the number of valence electrons, coordination number, oxidation state and d-configuration for the Cr-containing starting material and product of reaction (iv). [2 marks] f. Draw the transition state involved in the transmetallation process shown in reaction (v), clearly indicating which bonds are forming and which are breaking.