Among octahedral Ni +2 complex and octahedral Cr +2 complexes, the one which is better to use to determine whether a given ligand is a strong field or weak field ligand is to be stated. Besides measuring the number of unpaired electrons, another method for determining the relative ligand field strength is to be stated. Concept introduction: The electrons in the d orbital of a transition metal split into high and low energy orbitals when ligands are attached to it. The energy difference between these two levels depends upon the properties of both metal and the ligands. If the ligand is strong, then splitting will be high and the complex will be low spin. If the ligand is weak, then splitting will be less and the complex will be high spin. To determine: The complex which is better to use for determining whether a given ligand is a strong field or weak field ligand and another method for determining the relative ligand field strength.

Question

A student proposes the transformation below in one step of an organic synthesis. There may be one or more reactants missing from the left-hand side, but there are no products missing from the right-hand side. There may also be catalysts, small inorganic reagents, and other important reaction conditions missing from the arrow. • Is the student's transformation possible? If not, check the box under the drawing area. • If the student's transformation is possible, then complete the reaction by adding any missing reactants to the left-hand side, and adding required catalysts, inorganic reagents, or other important reaction conditions above and below the arrow. • You do not need to balance the reaction, but be sure every important organic reactant or product is shown. + T G OH де OH This transformation can't be done in one step.

Answer 1

Question

Chapter 21, Problem 77AE

Interpretation Introduction

Interpretation: Among octahedral Ni+2 complex and octahedral Cr+2 complexes, the one which is better to use to determine whether a given ligand is a strong field or weak field ligand is to be stated. Besides measuring the number of unpaired electrons, another method for determining the relative ligand field strength is to be stated.

Concept introduction: The electrons in the d orbital of a transition metal split into high and low energy orbitals when ligands are attached to it. The energy difference between these two levels depends upon the properties of both metal and the ligands. If the ligand is strong, then splitting will be high and the complex will be low spin. If the ligand is weak, then splitting will be less and the complex will be high spin.

To determine: The complex which is better to use for determining whether a given ligand is a strong field or weak field ligand and another method for determining the relative ligand field strength.

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