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- Using the Frost Circle method to outline the molecular orbitals of cyclobutadiene, and identify whether it is aromatic, antiaromatic or non-aromatic. Explain.Please help! Part 3B Set 1. Can IR spectroscopy be used to differentiate between the two compounds? Briefly explain why or why not. What significant absorptions would be observed in the IR spectrum?How many kinds of chemically non-equivalent hydrogens are there in each of the following compounds?
- Predict the electronic configurations of (a) the benzeneanion, (b) the benzene cation. Estimate the π-bond energy in each case.If the imaginary replacement of either of two protons forms enantiomers, then those protons are said to be enantiotopic. The NMR is not a chiral probe, and it cannot distinguish between enantiotopic protons. They are seen to be “equivalent by NMR.” What other protons in cyclobutanol are enantiotopic?For each of the following reactions, check in the box which of these A or B components represents "highest occupied molecular orbital" (HOMO) and "lowest unoccupied molecular orbital" (LUMO). Once assigned, determine their type of orbitals.
- Please answer this NEATLY, COMPLETELY, and CORRECTLY for an UPVOTE. Long and detailed explanations are not needed. Keep it short, brief, and direct because I only need the answers as soon as possible. Assign the absolute configuration on each of the chiral centers in the compound below.Predict whether the cyclic system is aromatic , anti-aromatic, or non-aromatic by counting electrons and explain why ? Also circle all the basic nitrogen’s wherever possible . Show all lone pairs which are involved in cyclic delocalization?For conjugated C=C with carbonyl group or another double bond, lower frequency for vibration and lower force constant is needed? Why?
- Represent a diastereoisomer of theproposed molecule, indicate theabsolute settings of your carbonschirals and discuss whether this is optically activeor not - justify:Part 3B Set 1. Can 1H NMR spectroscopy be used to differentiate between the two compounds? Briefly explain why or why not. Predict the 1H NMR spectrum for each compound (include integration, multiplicity, and approximate chemical shift). Put it in data table format.which molecule is more symmetrical ? how they distinguish in IR with fact ( without looking at their IR spectrum ?) 1,2-dibromobenzene and 1,3-di bromobenzene