Abstract
The title compound, C11H14N2, crystallized with two independent molecules (A and B) in the asymmetric unit. The two molecules differ only slightly, with the pyrrole rings being inclined to one another at a dihedral angle of 87.67 (8)° in molecule A and 88.09 (7)° in molecule B. In the crystal, there are no classical hydrogen bonds, but the two pyrrole NH groups of one molecule are involved in N—H⋯π interactions with the pyrrole rings of the other molecule. In this manner, a compact box-like arrangement of the two independent molecules is formed.
Highlights
The title compound, C11H14N2, crystallized with two independent molecules (A and B) in the asymmetric unit
The title compound was prepared as a building block for the formation of substituted calix[4]pyrroles
In the title compound the quateranry centers, C9 in A and C29 in B, impose a twist to the molecules with the pyrrole ring mean-planes being almost perpendicular to one another; 87.67 (8) ° in molecule A and 88.09 (7)° in molecule B. This is similar to the situation in the diethyl analogue where the two dihedral angles are 86.5 (2) and 86.7 (2) °
Summary
Refinement a Institute of Chemistry, University of Neuchâtel, rue Emile-Argand 11, 2009. Switzerland, and bInstitute of Physics, University of Neuchâtel, rue EmileArgand 11, 2009 Neuchâtel, Switzerland. Hatoms treated by a mixture of independent and constrained refinement max = 0.25 e Å3. The title compound, C11H14N2, crystallized with two independent molecules (A and B) in the asymmetric unit. There are no classical hydrogen bonds, but the two pyrrole NH groups of one molecule are involved in N—H interactions with the pyrrole rings of the other molecule. In this manner, a compact box-like arrangement of the two independent molecules is formed
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