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Chemie polyfunktioneller Moleküle, 125 Synthese und Kristallstruktur von N,N,N′,N”︁,N ‐Pentamethyl‐diethylentriamin‐cokoordiniertem Kalium‐bis(diphenylphosphanyl)amid
Author(s) -
Ellermann Jochen,
Schütz Martin,
Heinemann Frank W.,
Moll Matthias,
Bauer Walter
Publication year - 1997
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19971300124
Subject(s) - chemistry , metalation , toluene , amine gas treating , medicinal chemistry , ligand (biochemistry) , amide , potassium , chelation , stereochemistry , metallacycle , coordination sphere , molecule , x ray crystallography , organic chemistry , receptor , biochemistry , physics , diffraction , optics
The metalation of bis(diphenylphosphanyl)amine [HN‐(PPh 2 ) 2 , 1 with KO t Bu at 95°C in toluene affords a pale yellow precipitate of potassium bis(diphenylphosphanyl)amide ( 3a ). On addition of liquid N,N,N′,N”,N” ‐pentamethyldiethylenetriamine (PMDTA, 4 ) the precipitate dissolves in toluene at 115°C to give a yellow solution, from which yellow‐green blocks of [(Ph 2 P) 2 NK·PMDTA] ( 3b ) are obtained. X‐ray analysis reveals that the coordination sphere of potassium consists of the chelating triamine ligand and [N(PPh 2 ) 2 ] − as N‐donor as well as η 1 and η 2 C‐donor with two phenyl fragments. No phosphorus coordination of [N(PPh 2 ) 2 ] − is observed.
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