CHEM 0310 Lecture Notes - Lecture 10: Nuclear Magnetic Resonance Spectroscopy, Electromagnetic Radiation, Chemical Shift
Document Summary
Peak: deviation from baseline; sample absorbs electromagnetic radiation. Afte(cid:396) pu(cid:396)ifyi(cid:374)g a (cid:272)o(cid:373)pou(cid:374)d, (cid:449)e (cid:272)a(cid:374)"t (cid:271)e (cid:396)easo(cid:374)a(cid:271)le (cid:272)e(cid:396)tai(cid:374) of the ide(cid:374)tity a(cid:374)d st(cid:396)u(cid:272)tu(cid:396)e of the molecule. Ele(cid:373)e(cid:374)tal a(cid:374)alysis (cid:449)ill (cid:396)e(cid:448)eal the sa(cid:373)ple"s g(cid:396)oss (cid:272)he(cid:373)i(cid:272)al composition while chemical tests can help us identify its functional group. To differentiate between many alternative, a chemist makes use of a spectroscopy. A technique for analyzing the structure of molecules, usually based on differences in how they absorb electromagnetic radiation. Nuclear spectroscopy (nmr) probes the structure in the vicinity of individual nuclei, particularly hydrogens and carbons, and provides the most detailed information regarding the atomic connectivity of a molecule. Electromagnetic radiation can be described in the form of waves. A wave is defined by its wavelength ( (cid:895) o(cid:396) (cid:271)y its f(cid:396)e(cid:395)ue(cid:374)(cid:272)y (cid:894) (cid:895); = (cid:272)/ o(cid:396) (cid:272)= . C is defined as the speed of radiation or the speed of light = 3 x 1010 cms-1.
