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| Abstract |
Mercurophilic 1-(8,8-dicyanoheptafulven-3-yl)aza-15-crown-5 ether and its homologs were synthesized by substitution of 3-bromo-8,8-dicyanoheptafulvene with 1-azacrown ethers. By the condensation with ...malononitrile these heptafulvene derivatives yielded 1-(2-amino-1,3-dicyanoazulen-5-yl)azacrown ethers. The Merrifield Resin carrying 1-(2-amino-1,3-dicyanoazulenyl)azacrown unit irreversibly formed a complex with mercury (II) ion. The X-ray crystallographic analysis with aza-15-crown-5 derivative revealed a head-to-tail association of two nearly parallel heptafulvene rings; the bond lengths of the atoms in the conjugated system indicated a highly polar electronic structure.show more
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