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2 years ago

In the molecular orbital model of cyclobutadiene, how many -antibonding molecular orbitals are there?

Chemistry

1 answer:

Citrus2011 [14]2 years ago

4 0

There are one antibonding molecular orbitals present in molecular orbital model of c.

The cyclobutadiene has a pi system comprised of four individual atomic p - orbital and thus should have a four pi molecular orbitals. The compound is the prototypical antiaromatic hydrocarbon with 4 $\pi$ - electrons . Its rectangular structure is the result of jahn teller reaction which disorder the molecule and lowers its symmetry , converting the triplet to a singlet ground state. It is a small annulene . The delocalisation energy of the $\pi$ electrons of the cyclobutene is predicted to be zero .

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Answer:

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Explanation:

1. Energy to heat the liquid water from 55ºC to 100ºC

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C = 4.18g/JºC

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2. Energy to change the liquid to steam at 100ºC

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3. Total energy

$1,899.81J+22,762.14J=24,661.95J\approx24,662J\approx24.6kJ$

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