Energy level diagrams crystal field

Figure 22.9 Energy Level diagram for a ion in an octahedral crystal field.

The crystal field energy level diagram for octahedral coordination complexes. The energies of the d orbitals differ because of differing amounts of electron-electron repulsion. The... 

Identify the ligands and the geometiy of the coordination complex, construct the crystal field energy level diagram, count d electrons from the metal and place them according to the Pauli principle and Hund s rule. 

The crystal field energy level diagram for tetrahedral complexes. The d orbitals are split into two sets, with three orbitals destabilized relative to the two others. 

Figure 5.6 Energy level diagram of the splitting of the J-orbitals of a transition metal ion as a result of (a) octahedral co-ordination and (b) tetrahedral coordination, according to the crystal field theory. (From Cotton and Wilkinson, 1976 Figure 23-4. Copyright 1976 John Wiley Sons, Inc. Reprinted by permission of the publisher.)...

Figure 6.8 The Sugano-Tanabe diagram of a 3d electronic configuration (C/5 = 4.5). The two vertical lines correspond to the DqlB values in the crossover and for the ruby crystal (see the text). The inset shows the energy-level diagram for strong crystal fields.

Fia. 24. Energy level diagram for 3d configuraUon quartet terms under the action of crystal fields of various symmetries. Orbital degeneracy of a state is indicated in parentheses. 

Fio. 26. Energy level diagram of 3cP configuration (Cu" " ) in square planar complex or tetragonal crystal field (CF). Effect of bonding of the 3d-electrons with ligands is shown. 

Table 2. Energy-level diagram for C -3+ in an octahedral crystal field (L—S coupling not included) for the special choices and 30 (lowest doublet-levels only observed...

Fig. 2. The simplified energy level diagram for Oj, 02, and 02 in their ground state. When a crystal field is present, the n, and nu levels are not degenerate.

Figure 29.2 (a) Octahedral and (b) tetrahedral crystal fields represented as point charges around a central ion. Arrows show the effect of a tetrahedral distortion to the crystal field, (c) d-Orbital energy level diagrams for octahedral crystal field and octahedral crystal field with tetragonal distortion, and (d) tetrahedral crystal field and tetrahedral crystal field with tetragonal distortion. 

Draw a crystal field orbital energy-level diagram, and predict the number of unpaired electrons for each of the following complexes ... 

In the following orbital energy-level diagrams, the relative values of the crystal field splitting A agree with the positions of the ligands in the spectrochemical series (H20 < en < CN ) ... 

Draw a crystal field energy-level diagram for the 3d orbitals of titanium in Ti(H20),=,]3+. Indicate what is meant by the crystal field splitting, and explain why [Ti(H20)6]3+ is colored. 

Describe the bonding in [Mn(CN)g]3-, using both crystal field theory and valence bond theory. Include the appropriate crystal field d orbital energy-level diagram and the valence bond orbital diagram. Which model allows you to predict the number of unpaired electrons How many do you expect ... 

Predict the crystal field energy-level diagram for a linear ML2 complex that has two ligands along the z axis ... 

For each of the following, (i) give the systematic name of the compound and specify the oxidation state of the transition metal, (ii) draw a crystal field energy-level diagram and assign the d electrons to orbitals, (iii) indicate whether the complex is high-spin or low-spin (for dA-d7 complexes), and (iv) specify the number of unpaired electrons. 

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