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Updated: Jan 11, 2026

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives
Published on: February 7, 2017
A new triclinic polymorph of
Marika Iwatani1, Daisuke Nakane1, Takashiro Akitsu1
1Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
Abstract:
The redetermined structure of a new polymorph of 6,6'-{(1E,1E')-[(1,2-di-phenyl-ethane-1,2-di-yl)bis-(aza-neylyl-idene)]bis-(methane-ylyl-idene)}bis-(2-chloro-phenol), C28H22Cl2N2O2 was reported. The title compound was synthesized under microwave irradiation at 90 K, within 10 min. The asymmetric unit comprises a potentially tetra-dentate Schiff base ligand that crystallizes in the triclinic system with space group P1. The structure displays intra-molecular O-H⋯N hydrogen bonding, forming an S(6) ring. Comparisons are made with the monoclinic polymorph [Shen et al. (2017). RSC Adv. 7, 40640-40649].
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