CHEM 3750 Lecture Notes - Cumulene, Alkali Metal, Potassium Bromide
6 Apr 2014
School
Department
Course
Professor
Document Summary
1 - introduction to organic spectroscopy: 1h nuclear magnetic resonance spectroscopy (sf10 9. 1-9. 9) behave as though they were spinning on an axis, that is, they behave as tiny magnets. In the absence of an applied field, these tiny magnets are randomly oriented, but when they are put in the presence of an applied magnetic field (ho), they will align with or against that field. A slight excess will align with the field ( - spin) while the others will be anti parallel ( -spin). Atomic nuclei with odd mass numbers have angular momentum and. Alignment in the presence of a strong magnetic field. In the absence of an applied magnetic field. These concepts apply to 1h, 13c, and 19f nuclei which have spin. The spin nuclei are higher in energy and irradiation of light can induce the flipping of -spins to -spins. Such a process is called resonance. quantum numbers of 1/2. i. e. , two spin states.
