Cosy experiments
From NMR Wiki
COSY are homonuclear experiments that correlate between pairs of atoms connected by scalar coupling. The basic variant require only two pulses separated by an incremented delay (t1). A series of experiments collected this way is usually fourier transformed in both dimensions (t1 and t2) to yield the frequency domain COSY spectrum.
Different variants of this experiment exist:
see on wikipedia [1]
