Question Bank › Inorganic Chemistry › Inorganic Spectroscopy › ABC26IN0420The characteristic feature of an electronic spin resonance (ESR) spectrum of frozen aqueous solution of CuSO₄… · ABC26IN0420 Subject: Inorganic Chemistry · Chapter: Inorganic Spectroscopy · Topic: Inorganic Spectroscopy – General · Exam: GATE 2005-2021 · Marks: 2 · Difficulty: Medium
The characteristic feature of an electronic spin resonance (ESR) spectrum of frozen aqueous solution of $\mathrm{CuSO}_{4} \cdot 5 \mathrm{H}_{2} \mathrm{O}$ at 77 K is
(a) $\mathrm{g}_{\|}>\mathrm{g}_{\perp}$
(b) $\mathrm{g}_{\|}<\mathrm{g}_{\perp}$
(c) $\mathrm{g}_{\|}=\mathrm{g}_{\perp}$
(d) $\mathrm{g}_{\mathrm{x}} \neq \mathrm{g}_{\mathrm{y}} \neq \mathrm{g}_{\mathrm{z}}$
Answer Answer: A ✓ checked by 4AB · confidence medium
Explanation Frozen Cu(II) aquo complex (tetragonally elongated, d_x²−y² ground state) shows an axial spectrum with g∥ > g⊥ > 2.0023 (a).
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