- B Suggest A Modification To The Complex In Reaction I That Could Prevent This B Hydride Elimination Process Briefly 1 (77.71 KiB) Viewed 13 times
- B Suggest A Modification To The Complex In Reaction I That Could Prevent This B Hydride Elimination Process Briefly 2 (77.71 KiB) Viewed 13 times
- B Suggest A Modification To The Complex In Reaction I That Could Prevent This B Hydride Elimination Process Briefly 3 (39.51 KiB) Viewed 13 times
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 dn-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. [2 marks]
i. B-hydride elimination of 1-butene from [Fe(n-cp)("Bu)(PH3)2]. ii. Oxidative addition of methane to [PtCl3(PPh3)]: iii. Production of propane via o-bond metathesis between methane and [Sc(np-cp)2Et]. iv. Reductive elimination of isobutane from [Cr('pr)Me(n4-C4H6)(PPh3)2]. v. Transmetallation between [Pd(C6H5)Br(PPh3)2] and ZnClMe. N.B. cp = cyclopentadienyl, C5H5