NMR Periodic Table: Mercury NMR

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Mercury NMR

PHYSICAL PROPERTIES

Isotope	Natural Abundance (%)	Nuclear Spin (I)	Magnetogyric ratio *(10⁷rad/Ts)*	Quadruple moment *(10²⁸Q/m²)**	Resonance frequency (MHz) at 11.744T (500 MHz for protons)	Relative sensitivity (¹H=1.00)	Absolute sensitivity (¹H=1.00)
¹⁹⁹Hg	16.87	1/2	4.8457916	0	89.136	5.67*10^-3	9.54*10^-4
²⁰¹Hg	13.18	3/2	-1.788769	0.386	32.998	1.44*10^-3	1.9*10^-4

APPLICATION FIELDS

¹⁹⁹Hg NMR spectroscopy is applied on inorganic and organometallics mercury-containing compounds.

NMR REFERENCES

The recommended standard samples is neat HgMe₂ 17.910822MHz for a magnetic field where the proton of TMS is observed at exactly 100.00 MHz). Other standards are 0.1M Hg(ClO₄)₂ in 0.1M HClO₄ corresponding to a 17.870535 MHz frequency value. Also see IUPAC recommendations for reporting the NMR chemical shits of all nuclei relative to the ¹H resonance of TMS (02JMR323-156).

NMR PARAMETERS

Some interesting features of the Hg nucleus are:

¹⁹⁹Hg chemical shifts cover 4300ppm, from -1200ppm to +3100ppm.

Short T₁ values.

NMR EXPERIMENTS

In mercury-containing compounds the following experiments can be helpful:

¹H-decoupled vs ¹H-coupled ¹⁹⁹Hg spectrum.

2D ¹H-¹⁹⁹Hg HMQC experiment ( 91AC2674 , 93MRC815 ).

2D triple-resonance ¹³C-¹⁹⁹Hg {¹H} HETCOR experiment ( 94JORG35 ).

2D ³¹P-¹⁹⁹Hg correlation experiment using phosphorus detection.

BIBLIOGRAPHY

Interesting review: B91PRE264, 00ENC718 .
The Transition Metals NMR: B79HAR195.
¹⁹⁹Hg NMR in homo- and heteronuclear clusters ( B96GIE313).
93IC2663
93MRC815
93MRC548
93MRC537
93MRC380
92ICA805-200
91AC2674

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