Coordination Compounds 2 Question 62
64. EDTA $^{4-}$ is ethylenediaminetetraacetate ion. The total number of $N-Co-O$ bond angles in [Co(EDTA) $]^{-}$ complex ion is
(2013 Adv.)
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Answer:
Correct Answer: 64. $(8)$
Solution:
- PLAN: EDTA is a multidentate ligand as it can donate six pairs of electrons - two pair from the two nitrogen atoms and four pair from the four terminal oxygens of the $-COO^{-}$ groups
The structure of a chelate of a divalent $Co^{2+}$ with EDTA is shown as
Each $N$ has four $N-Co-O$ bonds thus total eight $N-Co-O$ bonds.
BETA
