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The title compound, C22H42O2Si2, shows a strictly antiperiplanar arrangement of the alkane chain with dihedral angles between the terminal alkyne groups and the alkane chains of -55 (6) and -60.7 (4)°. The central C-C bond contains the centre of inversion. The crystal packing shows interwoven meanders of the antiperiplanar 3,6-disubstituted diynes, with the methyl groups filling the space in between. The tert-butyldimethylsilyloxy groups of two meandering chains are oriented towards each other. The absolute values of the crystal data are compared with the data for rac-3,6-dimethyl-3,6-bis(tert-butyldimethylsilyloxy)-1,7-cyclododecadiyne [Boss et al. (1996). Acta Cryst. C52, 2370-2372].

Supporting information

cif

Crystallographic Information File (CIF)
Contains datablocks diin, global

fcf

Structure factor file (CIF format)
Contains datablock diin

CCDC reference: 129750

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