“…The prevalent anti-conformation imide structural type is demonstrated in the structures of both (I) and (II) and is similar to the molecular structures of the ortho-F (SOLSUI) and meta-F (DOKXOR) imide structures (Gallagher et al, 2009a,b), the chloro-and methyl-imides (Mocilac et al, 2018) and two benzene relatives (Shukla et al, 2018). This contrasts with the syn type as observed in the crystal structure of Mood, a 2-methylbenzoyl imide (Mocilac et al, 2018) and the four recently described SEYSUN/SEYTIC/SEYTOI/SEYTUO structures (Shukla et al, 2018). A key difference between these structures is the central N-pyridine ring in Mood An ORTEP view of (II) with the atomic numbering scheme.…”