Mesityloxomolybdän‐ und ‐wolfram‐Verbindungen. I. Die Struktur von LiMoO2Me2Mes(OEt2)2

Die Struktur der bekannten, aus MoO2Mes21 und LiMe dargestellten Verbindung LiMoO2Me2Mes(OEt2)22 [2] sowie ihre NMR-spektroskopischen Daten werden mitgeteilt. 2 bildet ein in der Raumgruppe P1 kristallisierendes Dimer durch Verknupfung zweier [MoO2Me2Mes]−-Anionen uber Oxo-Liganden durch zwei Kationen [Li(OEt2)2]+. Der gebildete [‥OMoOLi‥]2− Achtring ist eben. Mesityl Oxo Molybdenum and Tungsten Compounds. I. Structure of LiMoO2Me2Mes(OEt2)2 LiMoO2Me2Mes(OEt2)22 is prepared by literature method [2] from MoO2Mes21 and LiMe. Its x-ray structure and NMR-spectral data are presented. 2 adopts a dimer structure in which two [MoO2Me2Mes]− anions are linked via two bridging [Li(OEt2)2]+ cations bonded to the oxo ligands. The resulting [‥OMoOLi‥]2 ring is planar.

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