NEET · Chemistry · STD 12 - 5. Co-ordination chemistry
Which one of the following is an ambidentate ligand ?
- A Ethane-1,2-diamine
- B Ethylenediaminetetraacetate ion
- C Thiocyanate
- D Oxalate
Answer & Solution
Correct Answer
(C) Thiocyanate
Step-by-step Solution
Detailed explanation
(C) Thiocyanate
An ambidentate ligand is a unidentate ligand that has more than one donor atom but coordinates to the central metal atom or ion through only one donor atom at a time.
Thiocyanate ion ( \(S C N^{-}\)or \(N C S^{-}\)) has two donor atoms, sulfur ( \(S\) ) and nitrogen ( \(N\) ). It can bind to the metal through either the sulfur atom (thiocyanato) or the nitrogen atom (isothiocyanato). Thus, it is an ambidentate ligand.
Ethane-1, 2-diamine is a bidentate ligand.
Ethylenediaminetetraacetate ion is a hexadentate ligand.
Oxalate is a bidentate ligand.
An ambidentate ligand is a unidentate ligand that has more than one donor atom but coordinates to the central metal atom or ion through only one donor atom at a time.
Thiocyanate ion ( \(S C N^{-}\)or \(N C S^{-}\)) has two donor atoms, sulfur ( \(S\) ) and nitrogen ( \(N\) ). It can bind to the metal through either the sulfur atom (thiocyanato) or the nitrogen atom (isothiocyanato). Thus, it is an ambidentate ligand.
Ethane-1, 2-diamine is a bidentate ligand.
Ethylenediaminetetraacetate ion is a hexadentate ligand.
Oxalate is a bidentate ligand.
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