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29th Apr 2021 @ 5 min read
Werner’s theory was the first theory given for structures of Coordination compounds
It is named after Alfred Werner who gave this theory in 1823 and won a noble prize on this work in 1913. Alfred Werner is also known as the father of the coordination compounds
Central metal atom of a coordination compound can possess two kinds of valencies i.e. primary valency and secondary valency, and these valencies determine the structure of a coordination compound
For example the primary valency of
For example the secondary valency of while secondary valency is represented by continuous line (3/4) . If the charge on ligand is not zero it is represented by both dotted as well as continuous lines
Below are some examples of how structure of coordination compounds are drawn using Werner Theory
Facial isomer (Cis) Meridonial isomer (Trans)
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