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The title compound, C33H34O2Si, has been obtained as a product in the synthesis of 6,13-bis-[(triisopropyl-silyl)ethynyl]-6,13-dihydro-penta-cene-6,13-di ol. The solid-state structure reveals a dimer, with strong hydrogen bonds holding the two mol-ecules in a face-to-face arrangement [O center dot center dot center dot O = 2.746 (2) angstrom and O-H center dot center dot center dot O = 173 (2)degrees]. Within each dimer, the penta-cene units are pi-stacked (the distance between the mean least-squares planes of 22 C atoms is 3.60 angstrom).
