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A new technique is presented for studying chem. exchange in solids under conditions of magic angle spinning (MAS); it is based on the original 2-dimensional exchange expt. but uses the combination of a TOSS (total suppression of sidebands) sequence with it ...
In hexane, i.e. under heterogeneous conditions, 1,(w - 1)-dienes readily undergo double deprotonation to give bis(allylmetal) intermediates. In THF at -75 or -50 Deg, however, only monometalation occurs with dienes having
The results of round-robin measurements of waveguide loss and integrated mirror reflectivity in several European laboratories in the frame of the COST 240 project are presented. The Fabry-Perot cavity contrast method was used on semiconductor optical waveg ...
Tensile specimens of pure Mo and Mo-5 Re, Mo-41 Re and TZM alloys have been irradiated with 600 MeV protons in the PIREX facility at 300 and 660 K to 0.5 dpa. Results of the postirradiation tensile testing show a strong radiation hardening and a severe los ...
A survey of the magnetohydrodynamic (MHD) properties of the quasi-axisymmetric configuration MHH2 has been performed using a suite of MHD codes: the PIES code at Princeton for studying loss of equilibrium flux surfaces; three-dimensional Mercier and balloo ...
The elusive (E)-2-ethoxyvinyllithium can be readily generated in THF at -75 Deg from (E)-1-bromo-2-ethoxyethylene by halogen/metal exchange and subsequently trapped with electrophiles. Alkylation opens a convenient entry to (E)-configurated enethers. (E)-2 ...
