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Ate complexes of Ge(II) and Sn(II) with bidentate ligands [LiE(OCH2CH2NMe2)3]2 (E=Ge, Sn): synthesis and structure |
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| Authors: | Victor N. Khrustalev Mikhail Yu. Antipin Irina V. Borisova Valery V. Lunin Ghassoub Rima |
| Affiliation: | a A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, Moscow 119991, Russia b A. V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky prosp., Moscow 119991-GSP-1, Russia c Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory, Moscow 119899, Russia d Laboratoire d’Hétérochimie Fondamentale et Appliquée, UMR 5069, Université Paul-Sabatier, 118 route de Narbonne, Toulouse Cedex 4 31062, France |
| Abstract: | The reaction of equimolar quantities of LiOCH2CH2NMe2 and E14(OCH2CH2NMe2)2 (E14=Ge, Sn) in ether yielded new ate complexes [LiE14(OCH2CH2NMe2)3]2 (E14=Ge (1), Sn (2)) with bidentate ligands. The compounds 1 and 2 are white crystalline substances which are highly soluble in THF and pyridine and very sensitive to the traces of oxygen and moisture. The structures of these compounds are studied by X-ray diffraction analysis. The ate complexes 1 and 2 are powerful nucleophiles and may be employed as ligands (neutral) in the coordination chemistry of the transition metals. The electronegative O-substituents at the divalent E14 atoms render them less oxidizable than alkyl- or aryl-substituted derivatives, and the bidentate ligands, owing to intramolecular donor-acceptor interactions, make them more thermodynamically stable compared to monodentate ligands. |
| Keywords: | Ate complexes Organogermanium(II) and -tin(II) β-Dimetylaminoethoxy-ligand X-ray analysis |
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