Discussion on Coordination Compounds


 

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Posted on: 05:14:28 PM on September 8, 2017
Whose the strong ligand in Thiocyanate and isothiocyanate?why


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Posted on: 08:39:16 AM on December 5, 2017
The ligand NCS- is bonded to the metal through nitrogen (M-NCS), and SCN- through sulphur (M-SCN) in complexes formed by these two isomeric ligands. The sulphur atom is larger in size with vacant 3d orbitals. Though nitrogen is more electronegative, it is smaller in size without any extra vacant orbitals. This makes the nitrogen atom a better electron donor than sulphur to bond with transition metal ions. So, NCS- acts as the stronger ligand between the two.





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