¹H‐NMR Spectra of Molecular Groups in a Paramagnetic Matrix

Abstract Proton NMR spectra of molecular groups (NH + 4 , H 2 O) in a diluted matrix of paramagnetic spins are presented and compared with experiments. The sensitivity of the spectra to the paramagneticantiferromagnetic transition is discussed. Fits to experimental lines for antiferromagnetic ammonium salts (NH 4 ) 2 IrCl 6 , (NH 4 ) 2 RhCl 6 , and paramagnetic CoCl 2 · 6 H 2 O are shown. The range of effective local magnetic fields is evaluated.

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