For magnesium complex of EDTA²⁻, the number of N -donor and O -donor centers, are respectively.

Q32 · CSIR-NET Chemistry, December 2018

Paper: CSIR-NET December 2018 · Subject: Inorganic Chemistry · Chapter: Coordination Chemistry · Topic: Coordination Chemistry – General · Marks: 2 · Difficulty: Medium

For magnesium complex of $\mathrm{EDTA}^{2-}$, the number of N -donor and O -donor centers, are respectively.

(a)two and four

(b)two and two

(c)two and six

(d)two and eight

Answer

Answer: A ✓ checked by 4AB · confidence high

The source book printed B; on checking, A is correct — see the explanation.

Printed B; EDTA has four carboxylate O donors, not two.

Explanation

EDTA⁴⁻ is hexadentate: two amine N donors and four carboxylate O donors. In [Mg(EDTA)]²⁻ it binds through all six.

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