Chemistry - Coordination Chemistry Question with Solution | TestHub
Werner synthesized and resolved a polynuclear complex containing no carbon atom, Tris[tetraamine- -dihydroxidocobalt(III)]cobalt(III) cation is also called as Hexol.
Select the correct statement(s) regarding given complex Hexol.
Options:(select one or more)
Answer:
Solution:
Hexol is Tris[tetraammine-μ-dihydroxidocobalt(III)]cobalt(III) and contains 3 dinuclear Co–Co units, not 3 separate octahedral units, so (A) is incorrect.
In each dinuclear unit, the two Co(III) octahedra are connected through two μ-OH⁻ bridges, sharing a common edge.
Therefore, edge-sharing octahedra are present ⇒ (B) correct.
Each unit contains 2 bridging hydroxide ligands and there are 3 such units, so total bridging OH⁻ ligands = 3 × 2 = 6.
Hence (D) correct and the complex does not show geometrical isomerism ⇒ (C) incorrect.