A binuclear coordination complex has the formula . Which of the following is its correct IUPAC name? — Coordination Compounds Chemistry Question

💡 Solution & Explanation

The complex contains bridging hydroxo ($OH^-$) groups. Bridging ligands are denoted by the prefix $\mu$. The two $OH^-$ ligands bridge two $Fe$ centers. Let the oxidation state of Fe be $x$. $2x + 2(-1) + 8(0) + 2(-2) = 0 \Rightarrow 2x - 6 = 0 \Rightarrow x = +3$. The parts are symmetric. It is named by taking one half, then the bridge, then the other half, or using 'bis'. According to the specific source format, it is named as Tetraaquairon(III)- $\mu$ -dihydroxotetraaquairon(III) sulphate.