Self-Assembly of 1,1'-Biphenyl-2,2',6,6'-tetracarboxamides. Effect of Substitution at the Amidic Nitrogen

Abstract

Self-assembly of tetracarboxamides investigated by X-ray diffraction. Self-assembly of three 1,1'-biphenyl-2,2',6,6'-tetracarboxamides 2a-2c differing each from the other by substitution at the amidic nitrogens (R = H, ethyl and 1-(.I.R./I.)-phenylethyl, respectively) was investigated by single crystal X-ray diffraction analysis.

The unsubstituted tetracarboxamide 2a gives rise to infinite hydrogen-bonded 2D network composed from cyclotetrameric squares.

Keywords

• amides
• crystal structure determination
• hydrogen bonds
• X-ray diffraction
• crystal engineering
• solid state self-assembly
• biaryls
• biphenyls
• supramolecular structures