Paper: CSIR-NET June 2016 · Subject: Inorganic Chemistry · Chapter: Inorganic Spectroscopy · Topic: Inorganic Spectroscopy – General · Marks: 2 · Difficulty: Medium
Identify correct statements for the EPR spectrum of $\mathrm{VO}(\mathrm{acac})_{2}$ [with one pyramidal geometry at vanadium] at 77 K $[\mathrm{I}(^{51}\mathrm{V})=7/2]$
\[ \begin{array}{ll} \text{(A) It has two g values} & \text{(B) It has one g value} \\ \text{(C) It has 8 lines only} & \text{(D) It has two patterns of 8 lines each.} \end{array} \]
Correct statements are --
(a)A and D
(b)A and C
(c)B and C
(d)B and D
Answer
Answer: A ✓ checked by 4AB · confidence high
Explanation
Frozen VO(acac)₂ is axial: two g values (A) and two sets of eight ⁵¹V hyperfine lines (D) — A and D (a).