Q7 · CSIR NET Chemistry, December 2019
Paper: CSIR NET December 2019 · Subject: Inorganic Chemistry · Chapter: Inorganic Spectroscopy · Topic: Inorganic Spectroscopy – General · Marks: 2 · Difficulty: Hard
For an a an octahedral $\mathrm{Cu^{2+}}$ complex depicting axial EPR spectrum (g), the geometry of Cu and the orbital containing the unpaired electron are respectively
(a)Tetragonally elongated, $\mathrm{d}_{x^2-y^2}$
(b)Tetragonally compressed, $\mathrm{d}_{z^2}$
(c)Tetragonally elongated, $\mathrm{d}_{z^2}$
(d)Tetragonally compressed, $\mathrm{d}_{x^2-y^2}$
Answer
Answer: A ✓ checked by 4AB · confidence high
The source book printed no answer; this one was worked out and checked — see the explanation.
Explanation
An axial spectrum with g∥ > g⊥ > 2.0 is the signature of a tetragonally elongated Cu(II) octahedron with the unpaired electron in d_x²−y².
Study loop for Inorganic Spectroscopy