Discuss the bonding of mesitylene to the iron in [Fe(h6-C6H3Me3-1,3,5)2](PF6)2, identifying orbitals on the arene that have correct symmetry for interaction with valence orbitals on iron. How might the bonding in this compound differ from that in the isoelectronic chromium(0) complex [Cr(h6-C6H3Me3)2].
A model reaction of an elementary step in the Fischer-Tropsch synthesis. Studies of the mechanism of the heterogeneous Fischer-Tropsch synthesis have established that the chain forming step, ie the coupling of C-C bonds on the surface of the catalyst proceeds via successive insertion of the methylene groups into the metal-alkyl bonds. The X-ray structure has been determined for the ethylene hydride triphenylphcsphine cation and shows bond distances of 1.50A° for Ru-H and 1.41(1)A° for the ethylene ligand C-C bond, significantly longer than in the free olefin.
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