text: The pseudocontact shift affects molecules exhibiting this phenomenon.
full_question: The pseudocontact shift affects molecules exhibiting this phenomenon. Much of Harden McConnell’s early research was on molecules with this property, and aromatic examples with this property are described by his namesake equation. Norman Ramsey that excited states caused contributions to shielding which were given this name. The Evans method analyzes molecules with this property by comparing NMR shifts of a probe molecule in the presence and absence of those molecules. Lanthanide shift reagents have this property, as do T1 relaxation time reducing contrast agents. 1H spectra of molecules with this property tend to have chemical shifts around 200 ppm. Spin traps are used to extend the lifetime of molecules with this property so their Zeeman splitting and hyperfine splitting can be studied. FTP, name this property of molecules studied in EPR.
first_sentence: The pseudocontact shift affects molecules exhibiting this phenomenon.