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- Explain the major differences in macromolecular structural analysis using crystallography or cryo EM.Give reason/s for the following? Why CCl4 is used solvent for IR analysis?An organic compound has a percent composition, 89.84 %C, 10.17 %H. This compound has an approximate boiling point of 152 °C at 757 mmHg. The IR spectrum of the neat thin film is shown below. Propose a structure of this compound and show your rational for full credit. LD 3084 G2 2071 1166 42 1201 77 1028 44 3064 53 1942 84 14E0 53 1213 84 922 81 3028 37 186 86 1452 31 1150 86 905 79 3002 68 1800 84 1384 62 1144 86 BOTT 81 62 2961 7 1604 62 1364 57 699 4 2927 35 1583 84 1923 1082 555 Б4 2090 46 1494 20 1100 67 479 B4 D 4000 3000 2000 1500 1000 500 TRANSHITTANCEIXI
- The IR spectrum of methanol (CH3OH) shows strong absorption at 3340 (broad), 2945, 2833, and 1030 cm-1. What should be the band for O-H stretch?Given is teh mass spectogram of an unknown compoound. This unstable cyclic compund is a colorless liquid with a sharp odor and reacts with light and air with long exposure. What is the molar mass of the target mecule? What is the Molecular formula of the target molecule? What IHD /U ? What could be the description of the structure? Give the name of the structure.1. Write three major criteria of forming a Hydrogen bond in bullet points with example. 2. Certain amount of pure charcoal (carbon) has to be burnt with supplied natural air. Process engineer allowed the exact amount of air required to burn the entire charcoal completely to carbon dioxide. Carbon has no reaction with nitrogen gas present in the air. In the reaction outlet if 5 kg of nitrogen gas was found, calculate the amount of charcoal used. (12C, 16O, 14N)
- An organic chemistry laboratory Extraction; the extraction of crude naphtalene- benzoic acid mixture. Naphthalene is a suspect carcinogen and is toxic to aquatic life. Find an alternative pair of molecules that adhere better to the principles of green chemistry and can be separated by extraction using green' solvents. (kindly answer fully)Absorbance 7. Compound 7 is a neutral, low-melting solid (mp - 22.24°C) Elemental Analysis: C-72.00%, H-6.67%, O-21.33% "C Spectral Data: 196.5ppm(s), 166.4ppm(s), 129.7ppm(s), 129.6ppm(d), 114.0ppm(d), 56.0ppm(q), 22.8ppm(q) Mass Spectrum Compound 7 Structure W Inlanalty Infrared Spectrom 4000 3000 2500 1 'H NMR 20 100 110 120 130 140 150 100 170 100 100 201 Wave Number, am 1600 1300 1300 1100 130 Wavelength, microns 700 CHEM 241L Exp#12 NMR Spectroscopy www................................. www. Ppm, 8 Rev. 052318JKOThree sample, X (neutral), Y (basic), and Z (acidic), were mixed and dissolved together in dichloromethane. Propose a method to separate all given sample individually using the combination of liquid-liquid extraction, crystallization, distillation, and sublimation technique.
- An unknown compound of molecular formula C5H10O2, gives the HNMR data shown below. Which of the following structures is consistent with the data? A doublet at 1.23 ppm (6H), a Singlet at 2.10 (3H, and a Septet at 4.98 ppm (1H) (а) (b) HO HO. (d) (e)Discuss the measurement and use of the terms pi and sigma in the study of quantitative structure-activity relationships (QSARs) for a range of substituted aromatic drug analogues.Halogenation/ Bromination without Reaction with Baeyer's Reagent Solubility test Compound H20 CHCI; H2SO4 NaOH with light Result Explanation light 3-heptyne (1) (7) (9) (13) (17) (20) + ethylbenzene (3) (5) (10) (14) (18) (21) | 1-ethylcyclooctene (2) (6) (11) (15) (19) (22) isobutane (4) (8) (12) (16) no unsaturation