A NEW ONE-DIMENSIONAL CORRELATION SPECTROSCOPY (1D COSY) FOR ELECTRON-SPIN ECHO ENVELOPE MODULATION STUDIES

A new one-dimensional correlation spectroscopy (COSY) method for elect ron spin echo envelope modulation (ESEEM) studies is developed based o n introducing a general signal-acquisition scheme to detect both sum-f requency and difference-frequency 1D ESEEM spectra. Using a single cry stal of Cu/Ni(bu(2)dtc)(2) at 21 K, it is shown that the correlated nu clear transitions can be easily determined. To compare with existing 2 D ESEEM schemes, it is experimentally demonstrated that higher sensiti vity and resolution can be easily achieved by using this new 1D ESEEM COSY method. A graphical approach to using this spectroscopic method i s also described.