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. Author manuscript; available in PMC: 2012 Mar 23.
Published in final edited form as: J Am Chem Soc. 2011 Mar 1;133(11):3943–3953. doi: 10.1021/ja108650x

Figure 2.

Figure 2

Space-spin selection diagrams for the first-order average dipolar Hamiltonian in the R211 symmetry sequence for recoupling of I-S heteronuclear terms (a) and I-I homonuclear terms (b).