Polymorphism in 2-propyl-1H-benzimidazole

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Ethyl 1-(2-hy­droxy­eth­yl)-2-propyl-1H-benzimidazole-5-carboxyl­ate

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4-Methyl-N-(2-phenyl­eth­yl)-2-propyl-1H-benzimidazole-6-carboxamide

There are two independent mol-ecules in the asymmetric unit of the title compound, C(20)H(23)N(3)O, in which the dihedral angles between the phenyl ring of the phenyl-ethyl-amino group and the benzimidazole system are 73.98 (15) and 15.93 (16)°. The crystal packing features N-H⋯O and N-H⋯N hydrogen bonds.

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In the title compound, C(14)H(10)N(2)O, the benzoyl ring and benzimidazole ring system are aligned at a dihedral angle of 50.2 (2)°. In the crystal, inter-molecular N-H⋯N hydrogen bonds between adjacent imidazole groups generate supra-molecular C(4) chains running along the b axis.

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2-Trifluoro­methyl-1H-benzimidazole

The asymmetric unit of the title compound, C(8)H(5)F(3)N(2), consists of two half-mol-ecules, one lies on a mirror plane and the other is generated by twofold rotation symmetry, with the axis running through the trifluoro-methyl C atom and the attached benzimidazole C atom. The two 2-trifluoro-methyl-1H-benzimidazole mol-ecules are connected by N-H⋯N hydrogen bonds involving the disordered NH H...

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ژورنال

عنوان ژورنال: Acta Crystallographica Section A Foundations and Advances

سال: 2018

ISSN: 2053-2733

DOI: 10.1107/s2053273318090095