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The First Triphosphabicyclobutane—Evidence for a 1,2,3‐Triphosphabutadiene
Author(s) -
Appel Rolf,
Niemann Bärbel,
Nieger Martin
Publication year - 1988
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.198809571
Subject(s) - intramolecular force , cycloaddition , molecule , aryl , chemistry , line (geometry) , stereochemistry , mathematics , organic chemistry , catalysis , geometry , alkyl
Not 1,2,3‐triphosphabutadiene but the “butterfly molecule” 3 is formed in the line reaction of 1 and 2. The bond between the bridgehead P atoms of 3 has a length of only 2.136 Å. Presumably 3 is formed by intramolecular [2+2]‐cycloaddition of the actually expected triphosphabutadiene (Aryl = 2,4,6‐tri‐ tert ‐butylphenyl).