Organische Schwefelverbindungen II

Praefcke, Klaüs; Höhne, Gerhard; Weyerstahl, Peter; Klabuhn, B.

doi:10.1016/s0040-4039(00)72466-x

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1973

1975

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“…The molecular structure proposed by Praefcke et al (1973) was confirmed. The structure could not be solved by direct methods in the former space group and was found to be disordered in P21/m with the molecule and its image mirrored at y = 1/4,3/4 occupying the same lattice site with occupancy 0.5.…”

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confidence: 58%

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Mirror-disordered crystal structure of 1,1,3,3,8,8,10,10-octamethyl-4,11-dioxo-2,9-dioxa-6,12,13-trithia-dispiro[4.1.4.2]tridecane

Cheng

Nyburg

1975

Journal of Crystal and Molecular Structure

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The title compound, C16H2404S3, crystallizes in the monoclinic system: a=7.933(9) A, b = 10.965(12)~ c= 11.294(13)A, t3= 105.54(6) ~ , Z=2, space group P21 or P2~/m. The structure could not be solved by direct methods in the former space group and was found to be disordered in P21/m with the molecule and its image mirrored at y = 1/4,3/4 occupying the same lattice site with occupancy 0.5. The manner in which molecular conflicts can be avoided in the P2a/m structure is discussed. The molecular structure proposed by Praefcke et al. (1973) was confirmed.

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confidence: 58%

“…It has been shown by Praefcke et al (1973) that treatment of 4,4-dibromo-2,2,5,5-tetramethyltetrahydrofuranone-(3), I, with potassium xanthogenate K(S2CO-Et), gives rise, among other products, to a hitherto unknown dispirotrithiolan for which they proposed the configuration II.…”

Section: Introductionmentioning

confidence: 99%