   Chapter 21, Problem 46E

Chapter
Section
Textbook Problem

# Draw all geometrical and linkage isomers of square planar Pt(NH3)2(SCN)2.

Interpretation Introduction

Interpretation: All the geometrical and linkage isomers of square planar Pt(NH3)2(SCN)2 are to be drawn.

Concept introduction: The structures that have the same composition of complex ions, but differ in the attachment of metal to the ligands are known as linkage isomers.

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

To draw: All the geometrical and linkage isomers of square planar Pt(NH3)2(SCN)2 .

Explanation

Explanation

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.

In the cis- isomer of complex ion Pt(NH3)2(SCN)2 , two (NH3) and two (SCN) ligands are arranged next to each other. The structure is,

Figure 1

In the trans- isomer of complex ion Pt(NH3)2(SCN)2 , two (NH3) and two (SCN) ligands are arranged across from each other

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