Acta Crystallographica Section C

Crystal Structure Communications

Volume 62, Part 4 (April 2006)

organic compounds

bm1624 scheme

Acta Cryst. (2006). C62, o211-o215 [ doi:10.1107/S0108270106003489 ]

Four cycloalkanespiro-4'-imidazolidine-2',5'-dithiones

B. Shivachev, R. Petrova, P. Marinova, N. Stoyanov, A. Ahmedova and M. Mitewa

Abstract: The crystal structures of four cycloalkanespiro-4'-imidazolidine-2',5'-dithiones, namely cyclopentanespiro-4'-imidazolidine-2',5'-dithione {systematic name: 1,3-diazaspiro[4.4]nonane-2,4-dithione}, C₇H₁₀N₂S₂, cyclohexanespiro-4'-imidazolidine-2',5'-dithione {systematic name: 1,3-diazaspiro[4.5]decane-2,4-dithione}, C₈H₁₂N₂S₂, cycloheptanespiro-4'-imidazolidine-2',5'-dithione {systematic name: 1,3-diazaspiro[4.6]undecane-2,4-dithione}, C₉H₁₄N₂S₂, and cyclooctanespiro-4'-imidazolidine-2',5'-dithione {systematic name: 1,3-diazaspiro[4.7]dodecane-2,4-dithione}, C₁₀H₁₆N₂S₂, have been determined. The three-dimensional packing in all of the structures is based on closely similar chains, in which hydantoin moieties are linked through N-HS hydrogen bonding. The size of the cycloalkane moiety influences the degree of its deformation. In the cyclooctane compound, the cyclooctane ring assumes both boat-chair and boat-boat conformations.

Formula: C₇H₁₀N₂S₂, C₈H₁₂N₂S₂, C₉H₁₄N₂S₂ and C₁₀H₁₆N₂S₂


	Structure factor file (CIF format) (105.9 kbytes) [ doi:10.1107/S0108270106003489/bm1624Isup2.hkl ] Contains datablock I

	Structure factor file (CIF format) (105.3 kbytes) [ doi:10.1107/S0108270106003489/bm1624IIsup3.hkl ] Contains datablock new

	Structure factor file (CIF format) (124.7 kbytes) [ doi:10.1107/S0108270106003489/bm1624IIIsup4.hkl ] Contains datablock new

	Structure factor file (CIF format) (135.3 kbytes) [ doi:10.1107/S0108270106003489/bm1624IVsup5.hkl ] Contains datablock a034

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