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High-resolution sBe resonance spectroscopy of inorganic and organometallic compounds is discussed.Chemical shifts are found to be sensitive to environment and dependent only on local diamagnetic factors, the chemical shifts being determined by changes in the inductive effects of the groups bonded to beryllium. Proton magnetic resonance of methylberyllium species is reported and discussed. DimethylberyIlium is found to form 1:1 adducts with diethyl ether and trimethylamine at room temperature, but lowering the temperature favors formation of 2:1 adducts.

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285perature. After filtration and washing, pure K[(q5-C5H5)-Fe(C0)2] is obtained as a solvent-free, free-flowing solid in 7 5 4 0 % yield. No evidence for the presence of other, more highly reduced species was found.(CO)2]2. 12154-95-9; potassium benzophenone ketyl, 19333-28-9; benzophenone, 119-61-9.

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