Naslov
Hydrogen-bonding motifs in 3-carboxyanilinium bromide and iodide

Autori
Cinčić, Dominik ; Kaitner, Branko

Izvornik
Acta Crystallographica Section C - Crystal Structure Communications (0108-2701) 64 (2008), 2; 101-104

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
3-carboxyanilinium bromide; 3-carboxyanilinium iodide; hydrogen-bonding motifs; salts

Sažetak
In the title compounds, C_7H_8NO_2^+• Br^-, (I), and C_7H_8NO_2^+• I^-, (II), the asymmetric unit contains a discrete 3-carboxyanilinium cation, with a protonated amine group, and a halide anion. The compounds are not isostructural, and the crystal structures of (I) and (II) are characterized by different two-dimensional hydrogen-bonded networks. The ions in (I) are connected into ladder-like ribbons via N-H… Br hydrogen bonds, while classic cyclic O-H… O hydrogen bonds between adjacent carboxylic acid functions link adjacent ribbons to give three characteristic graph-set motifs, viz. C_2^1(4), R_4^2(8) and R_2^2(8). The ions in (II) are connected via N-H… I, N-H… O and O-H… I hydrogen bonds, also with three characteristic graph-set motifs, viz. C(7), C_2^1(4) and R_4^2(18), but an O-H… O interaction is not present.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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