Neutral and cationic tungsten(vi) fluoride complexes with tertiary phosphine and arsine coordination

Neutral and cationic tungsten(vi) fluoride complexes with tertiary phosphine and arsine coordination

Reaction of WF6 with AsR3 (R = Me or Et) in anhydrous CH2Cl2 at low temperature forms the neutral seven-coordinate, [WF6(AsR3)] (R = Me, Et), the first arsine complexes of WF6, whilst o-C6H4(EMe2)2 (E = P, As) produces [WF4{o-C6H4(EMe2)2}2][WF7]2. Crystal structures show the latter contain dodecahed...

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Veröffentlicht in:Chemical communications (Cambridge, England) England), 2018-10, Vol.54 (83), p.11681-11684
Hauptverfasser: Levason, William, Monzittu, Francesco M, Reid, Gillian, Zhang, Wenjian
Format: Artikel
Sprache:eng
Schlagworte:
Cations
Coordination compounds
Crystal structure
Crystallography
Dichloromethane
Fluorides
Metal fluorides
NMR
Nuclear magnetic resonance
Oxidation
Tungsten fluorides
Valence
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Zusammenfassung:Reaction of WF6 with AsR3 (R = Me or Et) in anhydrous CH2Cl2 at low temperature forms the neutral seven-coordinate, [WF6(AsR3)] (R = Me, Et), the first arsine complexes of WF6, whilst o-C6H4(EMe2)2 (E = P, As) produces [WF4{o-C6H4(EMe2)2}2][WF7]2. Crystal structures show the latter contain dodecahedral cations, and present the highest oxidation state metal fluoride complexes known (and the highest possible for tungsten) with soft neutral phosphine and arsine coordination.
ISSN:1359-7345
1364-548X
DOI:10.1039/c8cc05598j