Formation of Mono Oxo Molybdenum(IV) PNP Pincer Complexes Interplay between Water and Molecular Oxygen

Formation of Mono Oxo Molybdenum(IV) PNP Pincer Complexes : Interplay between Water and Molecular Oxygen

The synthesis of cationic mono oxo MoIV PNP pincer complexes of the type [Mo(PNPMe-iPr)(O)X]+ (X = I, Br) from [Mo(PNPMe-iPr)(CO)X2] is described. These compounds are coordinatively unsaturated and feature a strong Mo≡O triple bond. The formation of these complexes proceeds via cationic 14e intermed...

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Veröffentlicht in:European journal of inorganic chemistry. - 1998. - 2018(2018), 7 vom: 21. Feb., Seite 876-884
1. Verfasser: de Aguiar, Sara R M M (VerfasserIn)
Weitere Verfasser: Öztopcu, Özgür, Troiani, Anna, de Petris, Giulia, Weil, Matthias, Stöger, Berthold, Pittenauer, Ernst, Allmaier, Günter, Veiros, Luis F, Kirchner, Karl
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2018
Zugriff auf das übergeordnete Werk:European journal of inorganic chemistry
Schlagworte:Journal Article Ligand effects Molybdenum Oxo complexes Phosphines Pincer ligands
Beschreibung
Zusammenfassung:The synthesis of cationic mono oxo MoIV PNP pincer complexes of the type [Mo(PNPMe-iPr)(O)X]+ (X = I, Br) from [Mo(PNPMe-iPr)(CO)X2] is described. These compounds are coordinatively unsaturated and feature a strong Mo≡O triple bond. The formation of these complexes proceeds via cationic 14e intermediates [Mo(PNPMe-iPr)(CO)X]+ and requires both molecular oxygen and water. ESI MS measurements with 18O labeled water (H2 18O) and molecular oxygen (18O2) indicates that water plays a crucial role in the formation of the Mo≡O bond. A plausible mechanism based on DFT calculations is provided. The X-ray structure of [Mo(PNPMe-iPr)(O)I]SbF6 is presented
Beschreibung:Date Revised 16.07.2024
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1434-1948
DOI:10.1002/ejic.201701413