Al2(CH3)6 is isostructural with diborane, B2H6. On the basis of the orbitals involved, describe the Al-C-Al bonding for the bridging methyl groups in Al2(CH3)6.
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- .For anion NO2-, (a) predict the stereochemistry. Justify your prediction with VSEPR theory and by formal charge; (b) indicate the hybridization appropriate to the stereochemistry; (c) describe the bond character of N-O for the resonance structure.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.The pentadienyl radical, H2C“CH¬CH“CH¬CH2#, has its unpaired electron delocalized over three carbon atoms.(a) Use resonance forms to show which three carbon atoms bear the unpaired electron.(b) How many MOs are there in the molecular orbital picture of the pentadienyl radical?(c) How many nodes are there in the lowest-energy MO of the pentadienyl system? How many in the highest-energy MO?(d) Draw the MOs of the pentadienyl system in order of increasing energy. (continued)762 CHAPTER 15 Conjugated Systems, Orbital Symmetry, and Ultraviolet Spectroscopy(e) Show how many electrons are in each MO for the pentadienyl radical (ground state).(f) Show how your molecular orbital picture agrees with the resonance picture showing delocalization of the unpairedelectron onto three carbon atoms.(g) Remove the highest-energy electron from the pentadienyl radical to give the pentadienyl cation. Which carbon atomsshare the positive charge? Does this picture agree with the resonance picture?(h) Add an…
- DHA is a fatty acid derived from fish oil and an abundant fatty acid in vertebrate brains. Hydrogenation of DHA forms docosanoic acid [CH3(CH2)20CO2H], and ozonolysis forms CH3CH2CHO, CH2(CHO)2 (five equivalents), and HCOCH2CH2CO2H. What is the structure of DHA if all double bonds have the Z configuration?How many [A] dand [B] T bonds are in the H2C=C=CH2 molecule?Draw sketch structures of c6h12 that have the Z-configuratio
- Sketch the ultraviolet absorption spectrum of 1,3-Butadiene, matching peaks to electronic transitions. show that four isolated p orbital on carbon atoms combine to form pi orbitalAn ionic compound, LiN((CH3)3Si)2 is commercially available and can be synthesised by deprotonation of ((CH3)3Si)2NH with C4H9Li. Draw an orbital diagram and a sketch to show the overlap of orbitals that produce the bonding in ((CH3)3Si)2N− anion and predict whether the Si−N−Si bond angle in the ((CH3)3Si)2N− anion is larger than, equal to or smaller than 109.5. explainProvide the structure for (2E,4E)-2-chloro-2,4-octadiene
