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The Eft-60 is a 60 MHz pulsed Fourier transform NMR spectrometer that makes use of a permanent magnet (Varian EM360) and data acquisition and control software by Anasazi Instruments to allow rapid collection of 1-D and 2-D proton and carbon-13 spectra. / K- e' K1 q; d. D
The solvent used for 1H-NMR should not produce hydrogen signals that will complicate the spectrum for your sample. Typically, proton-free solvents like carbon disulfide, CS2, or carbon tetrachloride, CCl4, or deuterated solvents such as deuterochloroform, CDCl3, or deuteroacetone, CD3COCD3, are utilized. Also added to the bulk solvent is the internal standard tetramethylsilane (TMS). Commercially available solvents often are spiked with the TMS reference, but if not, you will need to prepare your bulk solvent of choice with 1-2% TMS, which can be stored for extended periods in a laboratory refrigerator. You will wish to read the relevantMaterial Safety Data Sheets to familiarize yourself with potential hazards when working with these solvents
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发表于 2008-10-20 23:32:36
发表于 2008-10-21 08:01:22
