Question

Identify the compounds below as a coordination or chelation complex

[Fe(CN)6]3–

Cr(gly)3

[Ni(en)3]3+

[Co(EDTA)]–

[Rh(NH3)5I]I2

[Co(NH3)6]Cl3

Answer 1

[Fe(CN)6]3– -----------------------> coordination

Cr(gly)3 ----------------------------> chelation

[Ni(en)3]3+ ----------------------------> chelation

[Co(EDTA)]– ----------------------------> chelation

[Rh(NH3)5I]I2 ------------------------> coordination

[Co(NH3)6]Cl3 ---------------------> coordination

explanation :

if the complex contain all monodentate ligands that is called simle coordination complex

if te compoux contain polydentate ligands that is called chelating complex .

gly , en are bidentate ligands

EDTA is hexadentate ligand