Paper: CSIR-NET June 2015 · Subject: Inorganic Chemistry · Chapter: Inorganic Spectroscopy · Topic: Inorganic Spectroscopy – General · Marks: 2 · Difficulty: Medium
The ${}^{119}\mathrm{Sn}$ NMR chemical shift (approximately in ppm) corresponding to $\left(\eta^{5}\text{-}\mathrm{Cp}\right)_{2}\mathrm{Sn}$ (relative to $\mathrm{Me_4Sn}$) is
(a)-4
(b)+137
(c)+346
(d)-2200
Answer
Answer: D ✓ checked by 4AB · confidence high
Explanation
Stannocene (Sn(II), highly shielded) resonates near −2200 ppm vs Me₄Sn (d).