Coordination Compounds: Isomerism Insights
Explore different types of isomerism in coordination compounds by Dr. Atul Kumar Singh, Assistant Professor in the Department of Chemistry. Dive into coordination, stereo, and geometrical isomerisms with detailed examples and images, shedding light on ligand placements and spatial arrangements around the central metal atom or ion. Discover the complexities and possibilities within coordination number variations.
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Presentation Transcript
Coordination Compounds by Dr. Atul Kumar Singh Assistant Professor Department of Chemistry M. L. Arya College, Kasba Purnia -854330 India
Coordination isomerism This type of isomerism arises due to different placement of ligands in bridged complex. For example
Stereo-isomerism This type of isomerism arises when they contain the same ligands in their coordination spheres but different arrangement in space.
Geometrical isomerism This type of isomerism is also referred as cis- and trans- isomerism. This type of isomerism arises due to ligands occupying different positions around the central metal atom or ion. The ligands occupy positions either adjacent (Cis) or opposite to one another(trans). Geometrical isomerism of compound with coordination number 4 and 6 is common but not possible with coordination number 2 and 3.
Geometrical isomerism in complexes with coordination number 4 Complexes with coordination number 4 either have tetrahedral geometry or square planer geometry .
Geometrical isomerism in Mabcd Complexes Complexes of the type Mabcd have three isomers
Geometrical isomerism in M(ab)2 Complexes M(ab)2 Complexes of the type containing unsymmetrical bidentate ligands. Complexes of the type Ma3b can not show geometrical isomerism because all spatial arrangements are equivalents.
