Übergangsmetall-substituierte Phosphane, Arsane und Stibane, XXVII [1] Wolfram-Komplexe mit Di(tert-butyl)arsino-, mono- oder dihapto-Di(tert-butyl)thioarsinyl-Liganden / Transition-Metal Substituted Phosphanes, Arsanes and Stibanes, XXVII [1] Tungsten Complexes with Di(tert-butyl)arsino, mono- or dihapto-Di(tert-butyl)thioarsinyl Ligands
Open Access
- 1 December 1981
- journal article
- research article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung B
- Vol. 36 (12) , 1580-1587
- https://doi.org/10.1515/znb-1981-1218
Abstract
The reaction of But 2AsCl with Na[W(CO)3Cp] in THF yields the metal arsine Cp(CO)3W−AsBut 2 (1), which is oxidized with elemental sulfur to the arsine sulfide Cp(CO)3W−AsBut 2(S) (2). 2 is converted in refluxing pentane with loss of CO into Cp(CO)2W(η2-AsBut 2S) (3). The chiral complex contains the novel dihapto-But 2As−S ligand and exhibits dynamic behaviour (⊿G≠286 = 15.4 kcal/mol). Side-on coordination of the But 2As−S ligand is proved by spectroscopic data and X-ray analysis. 3 crystallizes in the monoclinic space group P21/n with a = 12.141(2), b = 15.179(2), c = 19.558(2) Å, β = 99.61(2)°. The structure was refined to R = 0.051 for 4087 independent reflections.Keywords
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