10.42 Ligands that interact with d metals as shown in Fig. 10.43 are called o-donor ligands. When t bonding is important

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10 42 Ligands That Interact With D Metals As Shown In Fig 10 43 Are Called O Donor Ligands When T Bonding Is Important 1 (53.58 KiB) Viewed 38 times

10.42 Ligands that interact with d metals as shown in Fig. 10.43 are called o-donor ligands. When t bonding is important, i-acceptor and I-donor ligands behave as shown in Fig. 10.45. If a ligand generates a weak ligand field around a d-metal ion, the result will be a small value of A, and a high-spin complex. Conversely, a strong ligand field leads to a large value of Ao and a low-spin complex. (a) Justify the following statement: Cl- is a weak-field ligand because it is a n acceptor and CO is a strong-field ligand because it is a n donor. (b) Show that O2 is a -acceptor ligand. (c) Using the information from parts (a) and (b) and from Case studies 4.1 and 10.4, propose a detailed mechanism for CO poisoning.