Crystal structures and hydrogen bonding in the anhydrous tryptaminium salts of the isomeric (2,4-di-chloro-phen-oxy)acetic and (3,5-di-chloro-phen-oxy)acetic acids.

ABSTRACT: The anhydrous salts of 2-(1H-indol-3-yl)ethanamine (tryptamine) with isomeric (2,4-di-chloro-phen-oxy)acetic acid (2,4-D) and (3,5-di-chloro-phen-oxy)acetic (3,5-D), both C10H13N2 (+)·C8H5Cl2O3 (-) [(I) and (II), respectively], have been determined and their one-dimensional hydrogen-bonded polymeric structures are described. In the crystal of (I), the aminium H atoms are involved in three separate inter-species N-H⋯O hydrogen-bonding inter-actions, two with carboxyl-ate O-atom acceptors and the third in an asymmetric three-centre bidentate carboxyl-ate O,O' chelate [graph set R 1 (2)(4)]. The indole H atom forms an N-H⋯Ocarboxyl-ate hydrogen bond, extending the chain structure along the b-axis direction. In (II), two of the three aminium H atoms are also involved in N-H⋯Ocarboxyl-ate hydro

SUBMITTER: Smith G 

PROVIDER: S-EPMC4459305 | biostudies-literature | 2015 Jun

REPOSITORIES: biostudies-literature