The synthesis of (naphthalene-1,8-diyl)-1,3,2,4-dithiadiphosphetane 2,
4-disulfides from P4S10 and the appropriate naphthalene compound has b
een accomplished. The reactions of naphthalene-1,8-diyl-1,3,2,4-dithia
diphosphetane 2,4-disulfide with methanol and 3,5-di-tert-butylcatecho
l have been performed. The crystal structure of a naphthalene relative
of Lawesson's reagent has been determined.