Abstract
The whole mol-ecule of the title compound, C27H26N2O2, is generated by twofold rotational symmetry, with the central C atom of the pentyl chain located on the twofold rotation axis. The compound crystallizes as a bis-zwitterion, and there are two intra-molecular N-H⋯O hydrogen bonds generating S(6) ring motifs. In the crystal, mol-ecules are linked by pairs of C-H⋯O hydrogen bonds, forming ribbons propagating along [001], and enclosing R 2 (2)(22) ring motifs.
Highlights
The whole molecule of the title compound, C27H26N2O2, is generated by twofold rotational symmetry, with the central C atom of the pentyl chain located on the twofold rotation axis
The compound crystallizes as a bis-zwitterion, and there are two intramolecular N—HÁ Á ÁO hydrogen bonds generating S(6) ring motifs
In a continuation of our work on Schiff base ligands, we report on the crystal structure of the title compound, synthesized using two methods, viz. microwave irradiation and doi:10.1107/S2056989015014437
Summary
Our group reported the crystal structures of three new Schiff bases synthesized using conventional or ultrasonic irradiation methods by reacting primary amines and o-hydroxynaphthaldehyde (Ouari et al, 2015a,b,c) They too crystallize as bis-zwitterionic compounds with strong intramolecular N—HÁ Á ÁO hydrogen bonds forming S(6) ring motifs. It crystallizes as a bis-zwitterion, with strong intramolecular N— HÁ Á ÁO hydrogen bonding between the imino N atom N1 (N1’), and the O atom, O1 (O1i) [d (OÁ Á ÁN) = 2.5437 (17) A ; symmetry code: (i) Àx, y, Àz + 12], forming S(6) ring motifs (Fig. 1 and Table 1). Supramolecular features In the crystal, molecules are linked by pairs of C—HÁ Á ÁO hydrogen bonds, forming ribbons propagating along [001] and enclosing R22(22) ring motifs (Table 1 and Fig. 2)
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