Paper: CSIR-NET June 2013 · Subject: Inorganic Chemistry · Chapter: Coordination Chemistry · Topic: Coordination Chemistry – General · Marks: 2 · Difficulty: Medium
Intense band at $15000\,\mathrm{cm^{-1}}$ in the UV-visible spectrum of $[\mathrm{Bu}_{4}\mathrm{N}]_{2}\mathrm{Re}_{2}\mathrm{Cl}_{8}$ is due to the Transition
(a)$\pi \rightarrow \pi^{*}$
(b)$\delta \rightarrow \delta^{*}$
(c)$\delta \rightarrow \pi^{*}$
(d)$\pi \rightarrow \delta^{*}$
Answer
Answer: B ✓ checked by 4AB · confidence high
Explanation
The intense ≈14,700 cm⁻¹ band of [Re₂Cl₈]²⁻ is the δ → δ* transition of the quadruple bond.