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Communication | Regular issue | Vol 41, No. 9, 1995, pp.1901-1904
Published online, 1st January, 1970
DOI: 10.3987/COM-95-7134
■ Formation of a Dimeric Complex of 14-Dicyanomethylene-5,8,21,24-tetraoxa-2,11,18,27-tetrathiatricyclo[26.4.1.112,17]tetratriaconta-12,15,17(34),28,30,32-hexaen-33-one with Mercury(II) Chloride

Nobuo Kato, Kanji Kubo, Akira Mori, and Hitoshi Takeshita

*Institute of Advanced Material Study, 86, Kyushu University, Kasuga-koen, Kasuga, Fukuoka 816, Japan

Abstract

14-Dicyanomethylene-5,8,21,24-tetraoxa-2,11,18,27-tetrathiatricyclo[26.4.1.112,17]tetratriaconta-12,15,17(34),28,30,32-hexaen-33-one, a thiocrown ether, having a large cavity for complexation, formed a 1:2-complex with HgCl2. The X-ray structural analysis revealed that two aromatic rings were almost planar and, of the eight heteroatoms of the ethereal ring, each set of the consecutive two oxygen atoms and one sulfur atom on the tropone ring coordinated to one Hg2+ ion, but two sulfur atoms on the heptafulvene part were free from the coordination. The interatomic distance of two Hg2+ was 4.248 Å.