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Synthesis, Structure and Bonding in the Donor‐Acceptor Complex [ t Bu 2 PSe 2 ]ṁ[PNAryl]: En Route to the PN Bond
Author(s) -
Niecke Edgar,
Nieger Martin,
Reichert Franz,
Schoeller Wolfgang W.
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.198817131
Subject(s) - adduct , intramolecular force , chemistry , selenium , moiety , acceptor , aryl , crystallography , valence (chemistry) , stereochemistry , medicinal chemistry , organic chemistry , physics , alkyl , condensed matter physics
An iminophosphenium (monophoshadiazonium) ion is present in the adduct 3 , which is formed upon reaction of the iminophosphane 1 with selenium in the ratio 1:2. The P‐N distance (ca. 150 pm) in 3 is markedly shorter than in iminophosphanes. This and the valence angle at the N atom (ca. 170°) suggest a high proportion of triple bonding in the PN aryl moiety 3 . The structure of this adduct can also be regarded as a “frozen‐in transition state” of an intramolecular selenium exchange reaction.