SEARCH Articles Figures Tables 3.4- Diaza-6a-thiathiophthenes 6a-Thiathiophthenes Compounds Structurally Related to 6a-Thiathiophthen Synthesis of 6a-Thiathiophthens Synthesis, Properties, and Reactions of 6a-Thiathiophthens Thiathiophthenes l,6,6aSIV-trithiapentalenes) Thiathiophthens and Oxygenated Derivatives Thiathiophthens and Related Compounds