Lab#4 IR spectroscopy Flashcards
What is spectroscopy?
is the study of the interaction of light and matter
What is infrared spectroscopy?
Triggering molecular vibrations
through irradiation with infrared light. Provides mostly information about the presence or absence of certain functional
Upon irradation with infrared light, certain bonds respond by__________. This response can be detected and translated into a visual representation called a_____
vibrating faster,
spectrum
Study of spectral information: physical stimuus—->_____—–>response——->Detecting instrument——>_________
Molecule
response
What is the spectrum interpretation process . (3 steps
- Recognize a pattern.
- Associate patterns with physical parameters.
- Identify possible meanings, i.e., propose explanations
Once a spectrum is obtained, what will be the main challenge
to extract the
information it contains in abstract, or hidden form.
Once a spectrum is obtained what would be the next step?
recognizing certain patterns, associating these patterns with physical parameters
What do most organic spectroscopy use as the physical stimulus?
electromagnetic energy, radiation
What is reffered to as “pure energy”
electromagnetic energy 9(such as visible light) has no detectable mass component
What do other types of radiation such as alpha rays consist of
helium nucleihave a detectable mass component and therefore cannot be categorized as electromagnetic energy
What are the important parameters associated with electromagnetics radiation
Energy(E)
Frequency (v)
Wavelength (λ
Electromagnetic radiation equation
E = hv
Higher frequecy=
shorter wavelength
lower frequency =
lower wavelength
Infrared radiation is largely what type of energy, It induces stronger _________in covalent bonds, which can be viewed as springs holding together two masses or atoms
thermal.
molecular vibrations
