Table 1. Data Used for the Determination of Dihedral Angles Using NMR.

angle	NMR-parameter
α	Γ(C5′,H5′,P)DD,CSA Γ(C5′,H5″,P)50
β	3J(H5′,P)-, 3J(H5″,P)-51 and 3J(C4′,P)52
γ	3J(H4′,H5′)-, 3J(H4′,H5″)-19 and 2J(C4′,H5′)-, 3J(C4′,H5″)53
δ, P	3J(H1′,H2′)-, 3J(H2′,H3′)-, 3J(H3′H4′)-, Γ(C1′H1′,C2′H2′)DD,DD Γ(C3′H3′,C4′H4′)15,53,54
ε	3J(H3′,Pi+1)-,51 and 3J(C4′,Pi+1)-, 3J(C2′,Pi+1)52
ζ	ΓC3′,H3′,Pi+1DD,CSA50
χ	Γ(C8H8,C1′H1′)DD,DD (purines), Γ(C6H6,C1′H1′) (pyrimidines)20