Lab 2: Infra-Red (IR) - Nuclear Magnetic Resonance (NMR) Exercises In Molecular Spectroscopy - Structural Determination Organic Chemistry II CHEM 2425 Manrique October 30‚ 2012 Alex Wolf Introduction For the purposes of this lab‚ the chemical formula will be given‚ and the degrees of unsaturation can be calculate from the formula (2C+2)-(H+Hal-N)/2. The degrees of unsaturation will give clues as to the structure. A double bond‚ as well as a ring will have one degree of unsaturation each
Premium Chemistry Organic chemistry Oxygen
Study Guide: Exam 1 1. What type(s) of molecular motion is (are) observed using infrared spectroscopy? A. Stretching and bending B. Rotation and excitation C. Spin flipping D. Fragmentation 2. The functional group region of an infrared spectrum is A. where the cations appear. B. >1500 cm-1. C. <1500 cm-1. D. >2500 cm-1. 3. Stronger bonds will be found where in the infrared spectrum? A. Higher molecular weight B. Lower molecular weight C. Lower wavenumbers D. Higher wavenumbers 4. Compared
Premium Atom Spectroscopy Oxygen
of triorganotin(IV) complexes of monofunctional bidentate Schiff base have been synthesized and characterized through elemental analysis‚ conductance measurements‚ molecular weight determinations‚ UV-visible‚ multinuclear (1H‚ 13C‚ 119Sn) NMR spectroscopy‚ FT-IR‚ X-ray powder diffraction and theoretical calculations. On the basis of these techniques‚ it is proposed that the ligands are bounded to the tin atom through the azomethine nitrogen and carboxylate oxygen. The data reveal that triorganotin(IV)
Premium Chemistry Protein Oxygen
different elements apart. Can we tell every element apart from this test? Not with our flame test‚ but the idea of spectroscopy allows us to do so with a good detector and knowledge of spectral lines. Each metal will have it’s own unique spectral lines that correspond to the distances between electron orbits. Water samples are tested for heavy metals and other contaminants using spectroscopy. Elemental compositions of stars and planetary atmospheres can be determined by the emission lines given off
Premium Chemical element Metal Electron
Our Infrared Spectroscopy (IR) spectrum for our Acetaminophen KBr pellet provided a handful of strong peaks and hints that helped us to hypothesize what functional groups might be in Acetaminophen. The peaks that were at the highest wavenumbers were analyzed first. The strong peak at 3325.82 cm-1 was an indicator that there was stretching occurring between a Hydrogen and Nitrogen atom. This signified that Acetaminophen could contain an amide group. The next defined peak is located at 3162.26 cm-1
Premium Oxygen Infrared Functional group
Mustaqim Ahmed Period 4 September 18‚ 2013 Analysis of Food Dyes in Beverages Purpose: To determine the concentration of dye in a sports drink using spectroscopy and graphical analysis. We will be using beers law to find the unknown concentration of dye in a sports drink. Materials: Beakers‚ 50-mL‚ 2-3 ; Test tubes (13 x 100)mm 3-8 ; FD&C Blue 1 stock solution‚ 50-mL ; Lens tissues ; Pipets‚ serological‚ 10-mL ; Sample of consumer sports drink‚ 10-mL ; Spectrophotometer ; Test tube rack Procedure:
Premium Absorbance Laboratory glassware Coffee
mol–1dm3cm at 466.00nm and 210.39mol–1dm3cm-1 at 338.00nm. and the colour of the crystals obtained were orange. The crude product was then reacted with L-(+)-tartaric acid and 0.59g of the enantiomer [Λ-Co(en)3][(+)-tart]Cl∙5H2O was obtained. FT-IR spectroscopy was performed and the spectrum was analyzed. Green crystals of trans-[Co(en)2Cl2]Cl∙HCl∙2H2O was also synthesized and the cis-isomer was subsequently isolated by heating the aqueous solution in a steam bath. The UV-vis spectrum of trans-[Co(en)2Cl2]Cl∙HCl∙2H2O
Premium Spectroscopy Electromagnetic radiation Chemistry
Sydney Schell October 18th‚ 2012 Identifying Metallic Components Introduction: Spectroscopy is the study of the electromagnetic radiation emitted or absorbed by the atoms and molecules. A photon in short is light. Atoms produce light by putting energy in‚ the electron then becomes excited and goes up an energy level‚ the electron then falls back down to its ground state‚ and out comes a photon (light). The electromagnetic spectrum contains color that we can and cannot see. The color blue has
Premium Electromagnetic radiation Light Spectroscopy
DATE PERFORMED: JULY 20‚ 2007 SPECTROPHOTOMETRIC DETERMINATION OF EQUILIBRIUM CONSTANT FOR A REACTION ABSTRACT UV-VIS spectrophotometry is one of the most widely-used methods for determining and identifying many inorganic species. During this experiment‚ this spectrophotometry was used to determine the equilibrium constant‚ Keq‚ of the Fe3+(aq)+SCN-(aq)↔ FeSCN2+(aq) reaction. By determining the amount of light absorbed‚ the concentration of the colored FeSCN2+ solution was also quantitatively
Premium Analytical chemistry Chemical equilibrium Spectroscopy
Abstract Density functional theory (DFT) calculations have been used to investigate the structural properties‚ dipole moments‚ polarizabilities‚ Gibbs energies‚ hardness‚ electronegativity‚ HOMO/LUMO energies‚ chemical potentials‚ density of states and detonation properties of trans and cis configurations of azocubane. All properties have been obtained using the B3LYP functional and 6-31G(d‚p) basis set. Also‚ IR‚ UV-Vis‚ CD and NMR spectra of the structures were simulated. The volumes of the structures
Premium Chemistry Spectroscopy Electron