IR spectroscopy (which is short for infrared spectroscopy) deals with the infrared region of the electromagnetic spectrum, i.e. light having a longer wavelength and a lower frequency than visible light. Infrared Spectroscopy generally refers to the analysis of the interaction of a molecule with infrared light. Basic Principals of Raman Spectroscopy -. light is scattered by the sample at various. angles by momentary absorption to virtual. state and reemission. No change in electronic states. A. Infinite number of virtual states. A. energy absorbed by molecule from photon of light. We decided to try to use IR spectroscopy to solve this problem. IR spectroscopy is a technology used to identify substances [3,14, 16] and, according to our opinion, it will be possible to use it Appearance of IR Spectrum Wavelenght -μ= 10 6 meter Wavenumber (frequency) cm-1 = Hz /c 98% transmission 3% transmission 5 . Functional isomers in IR C 4 H 8 O 6 . Regions of the IR spectrum 7 . IR - spectroscopy Author: Sławomir Makowiec Created Date: 2/26/2019 12:07:06 PM IR peak on IR spectrum. # " 1 2 3 2 4 μm wavelength in IR Spectroscopy When IR radiation interact with sample molecule, th e sample molecule will absorb ' The Electromagnetic Spectrum15 Infrared Spectroscopy: Theory 155 u Online edition for students of organic chemistry lab courses at the University of Colorado, Boulder, Dept of Chem and Biochem. (2002) Chapter 15 Infrared Spectroscopy: Theory An important tool of the organic chemist is Infrared Spectroscopy, or IR. IR spectra Description: Infrared Spectroscopy (IR) Lab Infrared Spectroscopy Identification of Unknown The use of selected physical properties and Infrared Spectroscopy to determine the - PowerPoint PPT presentation. Number of Views: 294. Avg rating:3.0/5.0. XII. Infrared Spectroscopy— focus on vibrational transitions (Read Chap 14) A. Regions: -- near IR (800-2500 nm — quartz optics/W-I lamp, diode or thermal detect) anharmonic vib, overtone and combination bands. Return to this later, specific use -- mid IR (2500-25000 nm, 2.5-25 , 4000-400 cm INFRARED SPECTROSCOPY *INSTRUMENTATION* By Maria Ailyn L. Bancale Johanna C. Claro Helen K. Magdaraog Introduction to Infrared Spectroscopy Infrared spectroscopy - A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 3ff027-ZjRmO 3. InfraRed spectroscopy (identifying functional groups) 4. Mass spectroscopy (determining molecular weight, structural elements, molecular formula) The various spectroscopies are the primary method for determining the structure of compounds. If the molecule is not too large or complex, the determination should be very accurate. Infrared Spectroscopy. A molecule can be characterized (identified) by its molecular vibrations, based on the absorption and intensity of specific infrared wavelengths. 8 Infrared Spectroscopy. For isopropyl alcohol, CH(CH3)2OH, the infrared absorption bands identify the various functional groups of the molecule. 9 Capabilities of Infrared Analysis Principles of FTIR Spectroscopy In FTIR analyses, Infrared light from the light source passes through a Michelson interferometer along the optical path. The Michelson interferometer comprises a beam splitter, moving mirror, and fixed mirror. The light beam split into two by the beam splitter is reflected from the moving Principles of FTIR Spectroscopy In FTIR analyses, Infrared light from the light source passes through a