Round 4: Tossup 21

A 2D extension of this technique requires quantifying “blind spot behavior” as a function of frequency and time delay. Xenon and MMM can analyze data produced in this technique, the latter of which can interpret cysteine labels created during SDSL. Modulation (-5[1])of an exponential decay signal produced in this technique’s ESEEM form often suggests anisotropy in one interaction. More peaks are seen in this technique when zero-field (15[1])splitting occurs due to (*) hyperfine coupling. In (10[1]-5[1])this technique, a system’s splitting energy can be calculated as the product of the Bohr magneton, g-factor, and magnetic (-5[1])field. This is the most common technique used to study metal catalytic sites and free radicals. For 10 points, NMR is the “nuclear” analog of what technique used to study the spins of electrons? ■END■ (10[3]0[2])

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