Acta Crystallographica Section C

Crystal Structure Communications

Volume 58, Part 2 (February 2002)

Acta Cryst. (2002). C58, o72-o75 [doi:10.1107/S0108270101020170]

Three polar derivatives of N-ethylcarbazole: materials for optical applications

V. N. Nesterov, N. G. Montoya, M. Yu. Antipin, M. Sanghadasa, R. D. Clark and T. V. Timofeeva

Abstract: Three N-ethylcarbazole derivatives have been synthesized and tested for non-linear optical (NLO) properties. The compounds are 2-(9-ethyl-9H-carbazol-3-ylmethylene)malononitrile, C₁₈H₁₃N₃, (IIIa), 2-cyano-3-(9-ethyl-9H-carbazol-3-yl)thioacrylamide, C₁₈H₁₅N₃S, (IIIb), and 3-(9-ethyl-9H-carbazol-3-yl)-2-(4-phenyl-1,3-thiazol-2-yl)acrylonitrile, C₂₆H₁₉N₃S, (V). It was found that the molecules of (IIIa) and (V) are nearly planar, while non-planarity is more pronounced for (IIIb). Molecules of (IIIa) and (V) exhibit herring-bone packing motifs. In (IIIb), the molecules form layers coplanar with ( $\overline 2$ 01), within which they form centrosymmetric dimers via N-HS hydrogen bonds.

Formula: C₁₈H₁₃N₃, C₁₈H₁₅N₃S and C₂₆H₁₉N₃S

Online 16 January 2002


	Structure factor file (CIF format) (120.7 kbytes) Contains datablock IIIa

	Structure factor file (CIF format) (135.5 kbytes) Contains datablock IIIb

	Structure factor file (CIF format) (222.4 kbytes) Contains datablock V

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