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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Dicyclopentadienylberyllium reacts with dimethylberyllium or beryllium halides in the absence of solvent to form mixed C5H5BeX complexes. The products are stable toward disproportionation and monomeric in solution and vapor phases. NMR, IR, and mass spectral data are presented. The bonding interaction between beryllium and the cyclopentadienyl ring is discussed.The preparation and characterization of mixed alkyl (RMR') and alkylmetal halides of the group 2 metals have received much attention in the literature. Redistribution reactions between dialkyl and diaryl compounds of mercury2,3 and magnesium4 have been investigated. The mercury alkyls

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Infrared and Raman spectra are reported for liquid and solid C5H5BeCl, C5H5BeBH4, and C5H5BeBD4 and vibrational assignments of most of the C5H5, BeX, and skeletal modes are made. Conclusive evidence for a double hydrogen bridge configuration is found for C5H5BeBH4 and, in contrast to Be(BH4)2, this structure is unchanged in going from gas to liquid to solid. The C5H5 frequencies are in close accord with those of (C5H5)2Fe while the vibrations of the BeBH4 group are analogous to those reported earlier for the +BeBH4 ion in solid Be(BH4)2. Observation of several transitions for the skeletal torsional motion of C5H5BeBH4 implies that free internal rotation about the symmetry axis does not occur and calculations yield a value of 500 cm−1 for the tenfold torsional barrier. Raman polarization data are consistent with a low energy orientation which places the BeH2bB bridging plane and a Cs molecular symmetry plane in coincidence.