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Four 9-alkylthiophenanthrenes, namely, 9-methylthiophenanthrene, C15H12S, (1), 9-ethylthiophenanthrene, C16H14S, (2), 9-propylthiophenanthrene, C17H16S, (3) and 9-butylthiophenanthrene, C18H18S, (4), have been characterized by X-ray analysis. Compound (1) crystallizes in space group P21 with two molecules, and the other three, in a novel display of isostructurality, in space group P21/c with one molecule in the asymmetric unit.

Supporting information

cif

Crystallographic Information File (CIF)
Contains datablocks 1, 2, 3, 4, thiophen

fcf

Structure factor file (CIF format)
Contains datablock 1

fcf

Structure factor file (CIF format)
Contains datablock 2

fcf

Structure factor file (CIF format)
Contains datablock 3

fcf

Structure factor file (CIF format)
Contains datablock 4

CCDC references: 128977; 128978; 128979; 128980

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