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) Sketch the pi molecular orbitals of hexa-1,3,5-triene
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- How many anti-bonding pi-type molecular orbitals does 1,3-butadiene contain?Deduce the parities of the six π-orbitals of benzene.Allene (1,2-propadiene), H2C=C=CH2, has two adjacent double bonds. What kind of hybridization must the central carbon have? Sketch the bonding Ï€ orbitals in allene.What shape do you predict for allene?
- Describe the bonding in 1,3-butadiene using hybrid orbitals.Draw a 3D representation of the molecule penta-1,2,3,4-tetraene using the following EXPLICIT instructions: sigma bonds in the plane of the paper are normal lines, sigma bonds or orbitals projecting in front of the page are heavy lines, sigma bonds or orbitals projecting behind the page are dashed lines, and pi bonds are shown by drawing the lobes of the p-orbitals and indicating the overlaps. What is the hybridization of each atom (except H) in this molecule?Which of the following arrangements of p atomic orbitals gives the highest energy p-bonding molecular orbital of 1,3- butadiene?
- Pyrazine, C4H4N2, is used in the synthesis of vitamins and drugs. The molecule can be thought of replacing two -CH units in benzene with a nitrogen atom in each of the 1,4- positions. pyrazine Describe the o and a bonding in pyrazine by analyzing the hybridization state, valence electron count and o-framework. How many delocalized electrons are present? Explain your answer. How many bonding and anti-bonding 7-type molecular orbitals are present? Explain your answer. Draw the detailed MO diagram of the 7-system. Explain your answer.For (3E,5E)-octa-1,3,5,7-tetraene, shown below, which one of the n-molecular orbitals is the highest occupied molecular orbital (HOMO)? O V4 O V5 O V7 O V8If we extend the formation of the four pi-molecular orbitals to forming pi-molecular orbitals by the combination of the six un-hybridized p-orbitals in 1,3,5-hexatriene? Among those pi- molecular orbitals for 1,3,5-hexatriene, how many electrons are in the lowest-enery pi- molecular orbital? 1,3,5-hexatriene
- How many nodes are there in each of the MOs of 1,3-butadiene?Be sure to answer all parts.Describe the hybrid orbitals used by the underlined atoms in the molecule below, and then provide the number of bonds (σ and π) used by each of the atoms.CH3C≡CH.Hybridization of CH3―:Number of bonds:σπ Hybridization of ―C≡CH:Number of bonds:σπDraw the delocalized molecular orbitals for the following molecule. Are both 7 bonds of the triple bond involved in the delocalized orbitals? CH,-C=C-CH=CH,