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How many bonds could each of the following chelating ligands form with a metal ion? a. acetylacetone (acacH), a common ligand in organometallic catalysts: b. diethylenetriamine, used in a variety of industrial processes: NH 2 — CH 2 — CH 2 — NH — CH 2 — CH 2 — NH 2 c. salen, a common ligand for chiral organometallic catalysts: d. porphine, often used in supermolecular chemistry as well as catalysis; biologically, porphine is the basis for many different types of porphyrin-containing proteins, including heme proteins:

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Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243

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BuyFindarrow_forward

Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243
Chapter 20, Problem 43E
Textbook Problem
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How many bonds could each of the following chelating ligands form with a metal ion?

a. acetylacetone (acacH), a common ligand in organometallic catalysts:

Chapter 20, Problem 43E, How many bonds could each of the following chelating ligands form with a metal ion? a. acetylacetone , example  1

b. diethylenetriamine, used in a variety of industrial processes:

NH 2 CH 2 CH 2 NH CH 2 CH 2 NH 2

c. salen, a common ligand for chiral organometallic catalysts:

Chapter 20, Problem 43E, How many bonds could each of the following chelating ligands form with a metal ion? a. acetylacetone , example  2

d. porphine, often used in supermolecular chemistry as well as catalysis; biologically, porphine is the basis for many different types of porphyrin-containing proteins, including heme proteins:

Chapter 20, Problem 43E, How many bonds could each of the following chelating ligands form with a metal ion? a. acetylacetone , example  3

Interpretation Introduction

Interpretation: The number of bonds each of the given chelating ligands forms with metal ions is to be stated.

Concept introduction: The ligand that contains more than one atom with a lone electron pair and that can be used to bond to a metal ion is known as chelating ligands. The bonds formed by chelating ligands depend on number of donor atoms.

Explanation of Solution

Explanation

(a)

To determine: The number of bonds formed by Acetylacetone (chelating ligand) with metal ion.

The structure of Acetylacetone coordinating to a metal ion is,

Figure 1

In the above diagram, M represents metal ions. Since, the structure contains two Oxygen (donor) atoms, therefore, two bonds will be formed by Acetylacetone (chelating ligand) with metal ion.

(b)

To determine: The number of bonds formed by Diethylenetriamine (chelating ligand) with metal ion.

The structure of Diethylenetriamine coordinating to a metal ion is,

Figure 2

In the above diagram, M represents metal ions. Since, the structure contains three Nitrogen (donor) atoms, therefore, three bonds will be formed by Diethylenetriamine (chelating ligand) with metal ion

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Chapter 20 Solutions

Chemistry: An Atoms First Approach
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