Ellermann, Jochen;
Schütz, Martin;
Heinemann, Frank W.;
Moll, Matthias;
Bauer, Walter
Chemie polyfunktioneller Moleküle, 125 Synthese und Kristallstruktur von N,N,N′,N”︁,N‐Pentamethyl‐diethylentriamin‐cokoordiniertem Kalium‐bis(diphenylphosphanyl)amid
Beschreibung:
<jats:title>Abstract</jats:title><jats:p>The metalation of bis(diphenylphosphanyl)amine [HN‐(PPh<jats:sub>2</jats:sub>)<jats:sub>2</jats:sub>,<jats:bold>1</jats:bold> with KO<jats:italic>t</jats:italic>Bu at 95°C in toluene affords a pale yellow precipitate of potassium bis(diphenylphosphanyl)amide (<jats:bold>3a</jats:bold>). On addition of liquid <jats:italic>N,N,N′,N”︁,N”︁</jats:italic>‐pentamethyldiethylenetriamine (PMDTA, <jats:bold>4</jats:bold>) the precipitate dissolves in toluene at 115°C to give a yellow solution, from which yellow‐green blocks of [(Ph<jats:sub>2</jats:sub>P)<jats:sub>2</jats:sub>NK·PMDTA] (<jats:bold>3b</jats:bold>) are obtained. X‐ray analysis reveals that the coordination sphere of potassium consists of the chelating triamine ligand and [N(PPh<jats:sub>2</jats:sub>)<jats:sub>2</jats:sub>]<jats:sup>−</jats:sup> as N‐donor as well as η<jats:sup>1</jats:sup> and η<jats:sup>2</jats:sup> C‐donor with two phenyl fragments. No phosphorus coordination of [N(PPh<jats:sub>2</jats:sub>)<jats:sub>2</jats:sub>]<jats:sup>−</jats:sup> is observed.</jats:p>