1ST COUPLING OF A METAL ATOM WITH 4 ETHENE MOLECULES TO GIVE A METALLASPIROALKANE

The two butanediyl ligands in the novel manganate(+ III) 1, which was synthesized from manganocene, naphthalenepotassium, ethene and pyridine, are formed from four ethene molecules. In contrast, when manganocene is reduced with naphthalenelithium in the presence of trimethylphosphane [Li(tmeda)2]‐[Mn(η4‐C10H8)(PMe3)3] can be isolated. This diamagnetic manganate(—I) contains an η4‐bound naphthalene ligand. (Figure Presented.) Copyright © 1990 by VCH Verlagsgesellschaft mbH, Germany