METAL TETRAHYDROBORATES AND TETRAHYDROBORATO METALATES .20. REACTIONSOF CADMIUM TETRAHYDROBORATE WITH ALCOHOLATES AND PHENOLATES - X-RAY STRUCTURE OF [MECD(OCME(3))]4

Cadmium tetrahydroborate reacts with alkali metal alcoholates or pheno lates in THF solution either with formation of addition products [Cd(B H4)(2)OR](-) or by ligand exchange to produce Cd(BH4)OR. Different oli gomers of the latter are formed depending on concentration. The reacti on of Cd(BH4)(2) with Cd(Omes)(2) (mes = mesityl) leads to an equilibr ium of the starting materials with Cd(BH4)(Omes) as shown by Cd-113-NM R spectroscopy. The crystal structure of Me-Cd(OCMe(3)), a molecule wh ich can be regarded as a model for Cd(OCMe(3))(BH4), proved to be a te tramer with a cubane-type Cd4O4 core.