Polymer: Draw Structural Formula 1,3-Butadiene Z

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In summary, the structural formula for 1,3-Butadiene is C<sub>4</sub>H<sub>6</sub>, with two double bonds between the carbons. To draw the structural formula, four carbon atoms are drawn in a straight line, with double bonds between the first and second carbon, and the third and fourth carbon. 1,3-Butadiene is a hydrocarbon, specifically a conjugated diene, and is mainly used in the production of synthetic rubber and plastics. However, it is considered toxic and can cause irritation and potential carcinogenic effects. Proper safety precautions should be taken when handling and using this chemical.
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pmart491
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Homework Statement



Draw the structural formula for a three-monomer segment of poly(1,3-butadiene) in which addition is 1,2 for the middle unit and 1,4 for the outer units, with double bonds Z.

Homework Equations



Markovnikov's rule: H goes to the Carbon with the most H's

The Attempt at a Solution



Not too sure on this one.

1,3 butadiene is CH2=CH-CH=CH2

My attempt is posted in the picture

organicchemproblem.jpg


I know how to make it E or Z its just I do not know where the chains become bonded and how.
 
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  • #2
1,2 was for the MIDDLE unit, not the leftmost one.
 
  • #3


Dear student,

Thank you for your question. The structural formula for a three-monomer segment of poly(1,3-butadiene) with addition of 1,2 for the middle unit and 1,4 for the outer units, with double bonds Z, can be drawn as follows:

H2C=CH-CH=CH-CH2-CH=CH2

This structure follows Markovnikov's rule, with the hydrogen atoms attached to the carbon atoms with the most hydrogens. The double bonds in the middle unit are oriented in the Z configuration, while the double bonds in the outer units are oriented in the E configuration.

I hope this helps. Good luck with your studies!


 

1. What is the structural formula for 1,3-Butadiene?

The structural formula for 1,3-Butadiene is C4H6, with two double bonds between the carbons.

2. How do you draw the structural formula for 1,3-Butadiene?

To draw the structural formula for 1,3-Butadiene, start by drawing four carbon atoms in a straight line. Then, add a double bond between the first and second carbon, and another double bond between the third and fourth carbon.

3. What type of molecule is 1,3-Butadiene?

1,3-Butadiene is a hydrocarbon, specifically a conjugated diene. This means it contains two double bonds and is highly reactive.

4. What are the uses of 1,3-Butadiene?

1,3-Butadiene is primarily used in the production of synthetic rubber, such as styrene-butadiene rubber (SBR) and polybutadiene rubber (PBR). It is also used in the production of plastics, such as polystyrene and ABS.

5. Is 1,3-Butadiene toxic?

Yes, 1,3-Butadiene is considered toxic and a potential carcinogen. Exposure to high levels of this chemical can cause irritation to the eyes, skin, and respiratory system. It is important to handle and use 1,3-Butadiene with proper safety precautions.

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