Ix
Iy
Ix
Iy
Iz
Ix
Iy
Iz
Ix
2IzSz
2IySz
2IxSz
2IzSz
Iy
a
b c
d e
Iz
Ωt
a
a
2 pJIS
t
2 pJIS
t
FIGURE 2.6 Transformations of product operators. The product operator
transformations given in [2.225]–[2.237] are represented geometrically.
(a) Transformations under the chemical shift Hamiltonian, (b) rotations induced
by a pulse of x-phase, (c) rotations induced by a pulse of y-phase, and
(c)–(d) transformations under the scalar coupling Hamiltonian.
2.7 PRODUCTOPERATORFORMALISM 87