ABSTRACT
In the title compound, C(15)H(11)BrO(3), the dihedral angle between the naphtho-furan ring system (r.m.s. deviation = 0.022â Å) and the side chain is 4.50â (2)°. In the crystal, short Brâ¯Br [3.4435â (7)â Å] contacts propagating along [010] in a zigzag manner and weak π-π inter-actions [shortest centroid-centroid separation = 3.573â (2)â Å] directedalong [100] are observed.
ABSTRACT
In the title mol-ecule, C(11)H(8)FNO, the dihedral angle between the pyrrole and benzene rings is 49.16â (6)°. In the crystal, adjacent mol-ecules are linked by pairs of N-Hâ¯O hydrogen bonds, forming inversion dimers.
ABSTRACT
The asymmetric unit of the title compound, C(15)H(17)NO(2), contains two independent mol-ecules in which the dihedral angles between the pyrrole and benzene rings are 42.43â (9) and 45.70â (9)°. In both mol-ecules, the but-oxy chains are disordered over two sets of sites, with occupancy ratios of 0.701â (7):0.299â (7) and 0.869â (4):0.131â (4). Each mol-ecule forms a dimer with an inversion-related mol-ecule, through a pair of N-Hâ¯O hydrogen bonds. Weak C-Hâ¯O inter-actions link these dimers in the crystal structure.
ABSTRACT
In the crystal of the title compound, C13H20N4, the mol-ecule is nearly planar, the dihedral angles between the pyrimidine and the two pyrrolidine rings being 4.71â (2) and 4.50â (2)°. The crystal features inversion-related dimers linked by pairs of C-Hâ¯N hydrogen bonds generating R2(2)(16) patterns. The dimeric units are further linked into C(6) chains via an additional C-Hâ¯N hydrogen bond.