| Summary: | The title Schiff base, C27H33N7, is a tripodal amine displaying
C3 symmetry, with the central tertiary N atom lying on the
threefold crystallographic axis. The N—CH2—CH2—N
conformation of the pendant arms is gauche [torsion angle =
76.1 (3)], which results in a claw-like molecule, with the
terminal aniline groups wrapped around the symmetry axis.
The lone pair of the apical N atom is clearly oriented inwards
towards the cavity, and should thus be chemically inactive. The
amine NH2 substituents lie in the plane of the benzene ring to
which they are bonded. With such an arrangement, one amine
H atom forms an S(6) motif through a weak N—HN
hydrogen bond with the imine N atom, while the other is
engaged in an intermolecular N—H contact involving the
benzene ring of a neighbouring molecule related by inversion.
The benzene rings also participate in an intramolecular C—
H contact of similar strength. In the crystal structure,
molecules are separated by empty voids (ca 5% of the crystal
volume), although the crystal seems to be unsolvated.
|
|---|
