https://acarbosechemical.com/c....atecholaminergic-pol
Each 4 LH2 mol-ecule has actually a (+)anti-periplanar conformation aided by the pyridin-4-yl residues lying to either side of the central, planar C2N2O2 chromophore with all the dihedral angles involving the particular main core plus the pyridyl rings becoming 68.65 (3) and 86.25 (3)°, respectively, representing the major difference between the separate 4 LH2 mol-ecules. The anti conformation of the carbonyl groups allows the forming of intra-
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