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Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097

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BuyFindarrow_forward

Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097
Textbook Problem

A compound related to acetylacetone is 1,1,1-trifluoroacetylacetone (abbreviated Htfa):

Chapter 21, Problem 76AE, A compound related to acetylacetone is 1,1,1-trifluoroacetylacetone (abbreviated Htfa): Htfa forms

Htfa forms complexes in a manner similar to acetylacetone. (See Exercise 47.) Both Be2+ and Cu2+ form complexes with tfa having the formula M(tfa)2. Two isomers are formed for each metal complex.

a. The Be2+ complexes are tetrahedral. Draw the two isomers of Be(tfa)2. What type of isomerism is exhibited by Be(tfa)2?

b. The Cu2+ complexes are square planar. Draw the two isomers of Cu(tfa)2. What type of isomerism is exhibited by Cu(tfa)2?

 (a)

Interpretation Introduction

Interpretation: The two isomers of Be(tFa)2 and Cu(tFa)2 are to be drawn and the type of isomerism shown by them is to be stated.

Concept introduction: Organic compounds which have similar chemical formula but different structures, i.e., the atoms are in a different spatial arrangement, they are known as structural isomers. Cis and Trans isomers are also structural or geometrical isomers. Optical isomers are those which have non super imposable mirror images.

To determine: The two isomers of Be(tFa)2 and the type of isomerism shown by them.

Explanation

Explanation

The ligand tFa is trifloroacetyl acetone. It is a bidentate ligand. Its structure is,

Figure 1

The Be+2 complexes are tetrahedral. The tFa ligand has two oxygen each having lone pair of electrons. Therefore, it can form two covalent bonds with Be+2 .

The two isomers of Be(tFa)2 are,

(b)

Interpretation Introduction

Interpretation: The two isomers of Be(tFa)2 and Cu(tFa)2 are to be drawn and the type of isomerism shown by them is to be stated.

Concept introduction: Organic compounds which have similar chemical formula but different structures, i.e., the atoms are in a different spatial arrangement, they are known as structural isomers. Cis and Trans isomers are also structural or geometrical isomers. Optical isomers are those which have non super imposable mirror images.

To determine: The two isomers of Cu(tFa)2 and the type of isomerism shown by them.

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