Carbon-13 NMR

Sort By:
Decent Essays
Good Essays
Better Essays
Amazing Essays
Best Essays
    Page 1 of 50 - About 500 Essays
  • Better Essays

    9.76 (s, 1H, NH), 10.35 (s, 1H, NH), 12.34 (s, 1H, NH); 13C-NMR (100 MHz, DMSO-d6): δ 13.8 (CH3), 14.4 (CH3), 14.5 (CH3), 25.8 (C-4), ¬41.0 (C-5), 42.1 (C-7), 60.5 (CH2, ester), 60.8 (CH2, carbamate), 61.2 (CH2, carbamate), 111.5 (C-3), 122.5 (C-3a), 128.9 (C-7a), 149.5 (C-2), 154.5 (C=O), 155.6 (C=O, carbamate), 165.1 (C=O, carbamate), 176.7 (C=S). (EI-MS): m/z calcd.. C17H24N4O6S2 [M]+: 444,11 found:…

    • 1222 Words
    • 5 Pages
    Better Essays
  • Better Essays

    In the IR spectrum, RM-10-1i, peaks that are present correspond to the functional groups in 6-ethoxycarbonyl-3,5-diphenyl-2-cyclohexenone. These functional groups are sp2 hybridized carbons at 3031 cm-1, sp3 hybridized carbons at 2981 cm-1, a carbonyl at 1735 cm-1, aromatic carbon-carbon stretching at 1660 cm-1, an ester carbon-oxygen stretching at 1144 cm-1, and alkene carbon-hydrogen stretching at 698 cm-1. There was no alcohol present in this spectra, indication that all of the catalyst was…

    • 928 Words
    • 4 Pages
    Better Essays
  • Amazing Essays

    The banana-yellow coloured solution was stirred for 30 minutes, then 1 (6.00 g, 1 equiv, 45.4 mmol) was slowly added over 30 minutes, resulting in a milky brown solution colour. The solution was stirred for a further 18 hours following which two aliquots of hexanes (100ml) were added. The solution was filtered through a pad of silica, and then concentrated in vacuo and the product was purified by column chromatography (10% ethyl acetate in hexanes) to give a colourless oil (1.21 g, 9.30 mmol)…

    • 1392 Words
    • 6 Pages
    Amazing Essays
  • Amazing Essays

    Ethyl Cinnamate Synthesis

    • 921 Words
    • 4 Pages

    Experiment 5 Synthesis and NMR Spectroscopy of ethyl cinnamate Introduction: Wittig reactions involve the stereoselective synthesis of olefins from phosphonium ylides and aldehydes or ketones, where the carbonyl bond is converted to an alkene double bond.1 The variety of suitable reagents and the relatively mild experimental conditions facilitate their industrial applications, such as the synthesis of epoxides, esters, carotenoids and vitamin A.2,3 Specifically, the ester ethyl cinnamate is used…

    • 921 Words
    • 4 Pages
    Amazing Essays
  • Amazing Essays

    Nucleobases Lab Report

    • 1614 Words
    • 7 Pages

    Interactions of Nucleobases: NMR Investigations by H. Sapper and W. Lohmann Introduction Nuclear magnetic resonance (NMR) spectroscopy is often a very useful tool to identify organic molecules based on the atomic nuclei interactions with their environment. Recent advances have made use of the technology in protein, nucleic acid, and complex natural products structure identification. [1, 2, 3] Its origins lie in the works of Felix Bloch and Edward Purcell, who used the discoveries of Isidor…

    • 1614 Words
    • 7 Pages
    Amazing Essays
  • Amazing Essays

    Ferrocene Lab Report

    • 1510 Words
    • 7 Pages

    Objective The purpose of the experiment is to synthesize a compound with an organometallic iron-carbon bond and use infrared spectroscopy to investigate the unconventional sandwich structure. In addition, the experiment aims to understand pi-bonding of an arene ring, use cyclic voltammetry to understand the redox capacity of ferrocene, and explore the barriers between formal inorganic and organic chemistry definitions. Introduction Ferrocene was discovered unintentionally in 1949 when…

    • 1510 Words
    • 7 Pages
    Amazing Essays
  • Good Essays

    Fig 2a Essay

    • 528 Words
    • 3 Pages

    nuclear magnetic resonance (1H NMR) of HBA and HBA-BMF. In Fig. 2a,terminal methyl group present in fatty acid chain show the peak at around δ = 0.9 ppm.31 The proton of −CH2− groups of the fatty acid backbone and terminal methyl group attached proton show the peak between δ =1.20−1.59 ppm.30 The peak at δ = 5.4 ppm is attributed to the protons attached to the olefinic carbon atom (−CH=CH−) of fatty acid,28 this peak provides the evidence of the presence of fatty acid chain of SO in the HBA…

    • 528 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Apollo 13, also known as (AS-508), was suppose to be the third mission to land on the moon. The crew on the spacecraft consisted of Fred W. Haise, Jr., lunar Module Pilot, John J. Swigert, Jr., command module pilot, and James A. Lovell, Jr., commander. Launched at 2:13 p.m. on April 11, 1970 from the launched from complex 39A at Kennedy Space Center. The Apollo 13 mission was planned to launched and land on the moon and return back to Earth. Unfortunately, after about 56 hours into their…

    • 1471 Words
    • 6 Pages
    Good Essays
  • Good Essays

    Survival is about mental fortitude In Space on one can hear you scream. This is true for the novel 172 Hours on the Moon by Johan Harstand tells a tale of science fiction horror about three teens that have won a contest to spend 172 hours on the moon, however this journey becomes a fight for survival. Each of the Teens have their own reason for going and each have their own feelings. The are tested in the expanse of space with all of the mental and physical trials that they face. The fight for…

    • 1536 Words
    • 7 Pages
    Good Essays
  • Good Essays

    Apollo 13 History

    • 720 Words
    • 3 Pages

    The Apollo Space Program was very important to many Americans and NASA because it dealt with sending astronauts into space and exploring the unknown solar system. That is why on April 11th, 1970, NASA launched three astronauts into space. This launch is known as Apollo 13, or the 13th launch out of Earth’s solar system. NASA sent three men, Jim Lovell, Fred Haise, and Jack Swigert, into space on the Apollo 13 mission. Initially, Lovell, the commander, and Haise, the lunar module pilot, were…

    • 720 Words
    • 3 Pages
    Good Essays
  • Previous
    Page 1 2 3 4 5 6 7 8 9 50