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Cover Picture (Angew. Chem. Int. Ed. Engl. 22/1996)
Publication year - 1996
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199625491
Subject(s) - cover (algebra) , salt metathesis reaction , citation , metathesis , computer science , ring (chemistry) , library science , chemistry , engineering , organic chemistry , mechanical engineering , polymerization , polymer
The cover picture shows the first completely conjugated, tubelike hydrocarbon that is constructed by conventional chemical synthesis—a type of “picotube”. It is synthesized in one step from tetradehydrodianthracene by photochemically induced metathesis reaction, which makes use of the strain energy as driving force. The highly symmetrical compound is characterized by exceptional stability. Ring‐expanding metathesis—a new method for the construction of tubelike molecules—in conjunction with cyclization–dehydrogenation might point the way to interesting tube‐ and belt‐shaped systems. The picture was generated by S. Kammermeier with the program POV‐Ray on a Silicon Graphics Workstation. R. Herges et al. report on the synthesis and structure of the picotubes on p. 2669 ff.