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Titel
High-spin iron(II) complexes with mono-phosphorylated 2,6-diaminopyridine ligands
VerfasserSchröder-Holzhacker, Christan ; Stöger, Berthold ; Pittenauer, Ernst ; Allmaier, Günther ; Veiros, Luis F. ; Kirchner, Karl In der Gemeinsamen Normdatei der DNB nachschlagen
Erschienen in
Monatshefte für Chemie - Chemical monthly, 2016, Jg. 147, H. 9, S. 1539-1545
Erschienen2016
Ausgabe
Published version
SpracheEnglisch
DokumenttypAufsatz in einer Zeitschrift
Schlagwörter (EN)Iron / Aminophosphine ligands / DFT calculations / Carbon monoxide
URNurn:nbn:at:at-ubtuw:3-2899 Persistent Identifier (URN)
DOI10.1007/s00706-016-1731-9 
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High-spin iron(II) complexes with mono-phosphorylated 2,6-diaminopyridine ligands [0.71 mb]
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Several new monophosphorylated 2,6-diaminopyridine ligands bearing PiPr2 and PtBu2 units (PNNH2-iPr, PNNH2-tBu, PNNHMe-iPr, and PNNHEt-iPr) are prepared by treatment of the respective 2,6-diaminopyridines with the chlorophosphines PiPr2Cl and PtBu2Cl in the presence of a base. Treatment of anhydrous FeCl2 with 1 equiv of these afforded the tetracoordinated coordinatively unsaturated 14e complexes [Fe(2P,N-PNNH2-iPr)Cl2] and [Fe(2P,N-PNNH2-tBu)Cl2], while with PNNHMe-iPr and PNNHEt-iPr a phosphine transfer reaction of a second PN ligand took place to yield the known PNP pincer complexes [Fe(3P,N,P-PNPMe-iPr)Cl2] and [Fe(3P,N,P-PNPEt-iPr)Cl2]. The four-coordinate complexes [Fe(2P,N-PNNH2-iPr)Cl2] and [Fe(2P,N-PNNH2-tBu)Cl2] did not react with CO and the formation of iron PNC pincer complexes was not observed. The reason for the reluctance to add CO was investigated in detail by DFT calculations.

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