OXA-THIA-SPIRO-DECENE DERIVATIVES

The crystal structures of -4-thiaspiro[4.5]dec-9-en-9-yl)phenyl-(S)-me thanol C16H20O2S, (1), and 0-methyl-1-oxa-4-thiaspiro[4.5]dec-9-en-9-y l]ethyl 4-methoxybenzoate, C19H24O4S, (2), are composed of independent molecules separated by normal van der Waals distances. The molecular dimensions in both structures are normal. The hydroxyl and heterocycli c ring O atoms exhibit a short intermolecular hydrogen bond of the ord er of 2.814(4) Angstrom in (1), forming a chain of molecules along the c axis.