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Crystal Field Theory

Q. Consider the accompanying linear crystal field, in which the negative charges are on the z-axis. Using the figure (Figure 1) as a guide, predict which d orbital has lobes closest to the charges. Which two have lobes farthest from the charges? a) dz^2 is the farthest from the charges. b) dxz and dyz are the farthest from the charges. c) dx^2-y^2 and dyz are the farthest from the charges. d) dx^2-y^2 and dxy are the farthest from the charges.

Solved • Apr 20, 2020

Crystal Field Theory

Q. Energies of the d orbitals in a square-planar crystal field. For which d orbital(s) do the lobes point directly at the ligands in a square-planar crystal field? Check all that apply. a) dx^2-y^2 b) dxz c) dz^2 d) dxy e) dyz

Solved • Apr 20, 2020

Crystal Field Theory

Q. A hypothetical metal M forms the following complexes with the generalized ligands X, Y, and Z: Order these ligands according to their ability to split d orbitals. In other words, set up a spectrochemical series, from strongest to weakest ligand field strength. Rank from strongest to weakest ligand field strength. To rank items as equivalent overlap them.

Solved • Apr 16, 2020

Crystal Field Theory

Q. Consider a linear complex in which the ligands are oriented at an angle of 180 degrees from each other. In the figure below, the negative charges (blue spheres) represent the ligands and the positive charge (the red sphere) represents the central metal ion. Using the orientation of the d orbitals with respect to the x, y, and z axes, rank the d orbitals in order of decreasing energy in this crystal field. Rank from the highest to lowest energy. To rank items as equivalent, overlap them. dz2, dxz, dyz, dxy, dx2-y2

Solved • Apr 16, 2020

Crystal Field Theory

Q. Consider a metal ion with the outer electron configuration of d^4. In a coordination complex, the number of unpaired electrons in that metal ion depends on the orientation and type of ligands that surround it. Classify each description of a complex by the number of unpaired electrons in the d^4 metal ion.

Solved • Apr 16, 2020

Crystal Field Theory

Q. Consider the shown crystal-field splitting diagrams (Figure 1.) Select the one that fits each of the following descriptions. (The diagrams do not indicate the relative magnitudes of Δ.). A strong-field octahedral complex of Fe^3+ a) diagram (1) b) diagram (2) c) diagram (3) d) diagram (4)

Solved • Apr 16, 2020

Crystal Field Theory

Q. Consider the shown crystal-field splitting diagrams (Figure 1.) Select the one that fits each of the following descriptions. (The diagrams do not indicate the relative magnitudes of Δ.). A weak-field octahedral complex of Fe^3+ a) diagram (1) b) diagram (2) c) diagram (3) d) diagram (4)

Solved • Apr 16, 2020