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Calculate the wavenumber of the C-Cl band in CCl4.
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- The IR frequency of C≡N¯ in fac-[IrCl3(C≡N)3] is 2200 cm-1. Estimate the IR frequency of C≡N¯ for fac-[IrF3(C≡N)3] with an explanation.Classify the 19F nuclei in SF5− (which is square-pyramidal) into chemically or magnetically equivalent groups. Give your reasoning.3. Identify C-Cl stretching peaks in CDC13 and CHC13 spectra. Do these peaks have exactly the same frequencies for both compounds? Explain your answer. 4. Is the C==O stretching frequency the same for acetone and deuterated acetone? Explain your answer. 5. Identify C==O overtone in acetone spectrum which corresponds to the transition from ground level, n=0, to the second excited level, n=2.
- If a hypothetic vibrational motion of a molecule can be described by Tvib = 2A1 + E, within the point group Cav, how many bands/peaks would you expect to see in its IR spectrum? Explain your reasoning. C (4mm) E 2C, C, 20, 20, h=8 A, 1 1 1 1 x + y', 2 1 1 1 A, B, B, 1-1 -1 R. 1 -1 1 -1 x- y 1 -1 1-1 xy 2 0 -2 0 (x, y) (R, R) (2x, y2) 3.Suppose that hydrogen is replaced by deuterium in 1H35CI. Would you expect the J = 1←O transition to move to higher or lower wavenumber?Which of the following are units for wavenumber in IR spectroscopy? J-S mm cm-1 OJ-S¹ cm
- Classify the 19F nuclei in PF5 into chemically or magnetically equivalent groups. Give your reasoning.What is the relationship between wavenumber and wavelength and how wavenumber is related to energy? Why stretching frequencies decrease from C−Cl to C−Br to C−I?Suppose that hydrogen is replaced by deuterium in1 H35CI. Would you expect the J = 1 ~ 0 transition to move tohigher or lower wavenumber?