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Metal‐Metal Multiple Bonds Formed Across Two Tungsten‐Calix[4]arenes by a Reductive Coupling Reaction
Author(s) -
Giannini Luca,
Solari Euro,
ZanottiGerosa Antonio,
Floriani Carlo,
ChiesiVilla Angiola,
Rizzoli Corrado
Publication year - 1997
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199707531
Subject(s) - calixarene , tungsten , chemistry , metal , pyridine , coupling reaction , cyclophane , crystallography , polymer chemistry , photochemistry , inorganic chemistry , stereochemistry , molecule , crystal structure , medicinal chemistry , organic chemistry , catalysis
Tungsten–tungsten double and triple bonds are found in the dimers 1 (structure depicted on the right; calixarene substituents partly omitted) and 2 , respectively, formed by the reductive coupling of the corresponding dichlorotungsten compounds. In 1 the two Na + ions are located in the calixarene cavity; in 2 they bridge the two calixarene units. py = pyridine.