PHYSICAL PROPERTIES
 

¹⁰⁹Ag NMR spectroscopy is applied on inorganic silver-containing compounds and on silver-protein complexes.

A typical reference sample is a saturated solution of AgNO₃ in D₂O. Its absolute frequency is 4.653533 MHz with respect to 100.00 MHz of the TMS signal. Also see IUPAC recommendations for reporting the NMR chemical shits of all nuclei relative to the ¹H resonance of TMS (02JMR323-156).

Some interesting features of the Ag nucleus are:

• ¹⁰⁹Ag chemical shifts cover a range of 1500ppm, from 0ppm to -1500ppm. Identical chemical shifts are found for the ¹⁰⁷Ag isotope.
• Long T₁ values.

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

• ¹H-decoupled vs ¹H-coupled ¹⁰⁹Ag spectrum.
• ¹⁰⁹Ag-decoupled vs ¹⁰⁹Ag-coupled ¹H spectrum.
• 2D ¹H-¹⁰⁹Ag HMQC experiment ( 91JACS9354 ).
• 1D ¹⁰⁹Ag-{³¹P} INEPT experiments ( 85IC4278-24 ).
• 2D ¹⁰⁹Ag-³¹P HSQC experiments ( 90MRC145 , 94IC4999-33 ).

Interesting review: B91PRE264.
The Transition Metals NMR: B79HAR195.
¹⁰⁹Ag  NMR in heteronuclear clusters ( B96GIE313).

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