Chemistry: Molecular Approach (4th Edition)

Published by Pearson
ISBN 10: 0134112830
ISBN 13: 978-0-13411-283-1

Chapter 25 - Exercises - Page 1153: 9


Cis-trans isomerism is one type of geometrical isomerism that occurs in the square planar complexes of the type \[MA2{{B}_{2}}\] and octahedral complexes of the type \[MA4{{B}_{2}}.\]

Work Step by Step

For example: Square planar complex Pt \[{{\left( N{{H}_{3}} \right)}_{2}}C{{l}_{2}}\] exhibits cis-trans isomerism. Octahedral complex ion \[{{\left( Co{{\left( N{{H}_{3}} \right)}_{4}}C{{l}_{2}} \right)}^{+}}\] exhibits cis-trans isomerism. Cis-trans isomerism does not occur in tetrahedral complexes because all the bond angles around the central metal are \[109.5,\] and each comer of a tetrahedron can be considered to be adjacent to all other corners. Similarly, a linear complex cannot exhibit cis-trans isomerism.
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