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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 40E
Textbook Problem
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Draw structures of each of the following.

a. cis-dichloroethylenediamineplatinum(II)

b. trans-dichlorobis(ethylenediamine)cobalt(II)

c. cis-tetraamminechloronitrocobalt(III) ion

d. trans-tetraamminechloronitritocobalt(III) ion

e. trans-diaquabis(ethylenediamine)copper(II) ion

Interpretation Introduction

Interpretation: The structure of each given complex compound is to be stated.

Concept introduction: In geometrical isomerism, atoms or group of atoms are arranged at different positions around a bond.

Explanation of Solution

Explanation

(a)

To draw: The structure of cis-dichloroethylenediamineplatinum(II).

There are two types of geometrical isomerism,

  • cis-isomerism: In this isomerism, ligands are arranged next to each other.
  • trans-isomerism: In this isomerism, ligands are arranged across from each other.

The given compound contains metal ion Platinum (Pt2+) . This ion makes square planner geometry. Hence, it forms four bonds with the ligands.

The ligands are chloro (Cl) and ethylenediamine (NH2CH2) . Since, the compound is cis-isomer, therefore, these ligands are arranged next to each other. The structure is,

Figure 1

(b)

To draw: The structure of trans-dichlorobis(ethylenediamine)cobalt(II).

There are two types of geometrical isomerism,

  • cis-isomerism: In this isomerism, ligands are arranged next to each other.
  • trans-isomerism: In this isomerism, ligands are arranged across from each other.

The given compound contains metal ion Cobalt (Co2+) . This ion makes octahedral geometry. Hence, it forms six bonds with the ligands.

The compound contains two chloro (Cl) and two ethylenediamine ligands. Since, the compound is trans-isomer, therefore, these ligands are arranged across from each other. The structure is,

Figure 2

(c)

To draw: The structure of cis-tetraamminechloronitritocobalt(III) ion

There are two types of geometrical isomerism,

  • cis-isomerism: In this isomerism, ligands are arranged next to each other.
  • trans-isomerism: In this isomerism, ligands are arranged across from each other.

The given compound contains metal ion Cobalt (Co2+) . This ion makes octahedral geometry. Hence, it forms six bonds with the ligands.

The compound contains four ammine (NH3) , one chloro (Cl) and one nitrito (NO2)

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Chapter 20 Solutions

Chemistry: An Atoms First Approach
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Ch. 20 - You isolate a compound with the formula PtCl4 ...Ch. 20 - Both Ni(NH3)42+ and Ni(SCN)42 have four ligands....Ch. 20 - Which is more likely to be paramagnetic, Fe(CN)64...Ch. 20 - A metal ion in a high-spin octahedral complex has...Ch. 20 - What is the lanthanide contraction? 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