H H Predict the splitting pattern predicted for the circled proton in the structure below. Consider complex coupling and long-range coupling. CH A d B dd C dt HO D ddt E dq
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- • Wnite prionties on each of Hese graups (1=highest, 4 assign the stereocenter = lowest) Ond as R or S. Brt CthBrH3CO Predict the splitting pattern expected for the circled proton in the structure below. Consider complex coupling and long-range coupling. O --+- H H H A) d B) dd C) dt D) ddt E) dq +Deaw the structure of the compound whose Sper spectroscopy data speef provided, сонго 2.6 ppm, 1H! sextet 2.1ppm, 34; singlet 1.7 -1.3 ppm, 2H, multipet 1.1 ppm, 3H, doublet 0.9 ppm, 34; triplet 3H i
- These are for isomers of two ester compounds of a formula of C4H6O2. The exact wavenumber (cm-1) and %T. Why are the C=O stretching frequencies different for these two esters (Why is one lower in wavenumbers)?Predict the spin-spin coupling (aka splitting) by providing the multiplicity (singlet, doublet, triplet, doublets of doublet, quartet. etc.) of Ha, Hb, Hc, and Hd of the molecules below. Please decide how many non-equivalent protons in each given molecule.Which are true/false ?
- Cisplatin (cis-diamminedichloroplatinum(II)) is the first platinum-based antitumor agent, and it is still widely used in chemotherapy, whereas the trans isomer is therapeutically inactive. NH, H,N CI A Pt Pt CI NH3 CI NH, cis trans (cisplatin) a) Assign point group to A and B. b) Is it possible to distinguish A and B based on the Pt-Cl stretching vibrations using IR and/or Raman spectroscopic data? If so, explain how you could distinguish them using group theory.When we perform Bradford Assay to measure protein concentration, the spectrophotometer is set 595 nm because: a. the excitation peak of Coomassie Blue is best observed at 595 nm b. when Coomassie Blue binds to proteins, its maximum absorbance shifts to 595 nm c. the reducing effects of Coomassie Blue shifts the protein's maximum absorbance to 595 nm d. myoglobin is best observed at 595 nm1) a) When CO becomes coordinated to BH3, its stretching frequency increases, but when CO is coordinated to Ni(CO)3, its stretching frequency decreases. Explain. b) Does the stretching frequency of CO increase of decrease when (explain too) i) L of L M-CO becomes more electron withdrawing. ii) CO of L₁M-CO becomes coordinated to a Lewis acid, A, to become LM-CO-A 18
