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when diborane undergoes complete methylation, the number of hydrogen atoms replaced are1)6 2)2 3)4 4)3?
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?when diborane undergoes complete methylation, the number of hydrogen ...
Diborane is an electron deficient molecule. The two boron atoms and the four terminal hydrogen atoms of the molecule are all in the same plane. These four terminal B -H bonds are regular 2-centered- 2 electron bonds.
The bridging hydrogen atoms lie above and below this plane. The two bridges B-H-B bonds are unusual three centered two electron bonds. The boron atoms in diborane undergo sp3 hybridisation. The overlapping of a vacant sp3 hybrid orbital of one boron atom and sp3 hybrid orbital of another boron atom containing one electron with the pure s -orbital of bridging hydrogen containing one electron results in the "banana bond" .Similarly other banana bond is formed on other side .
Thus the two banana bonds formed lie above and below the plane of the boron atoms. The remaining two sp3 hybrid orbitals of each boron atom overlap with terminal hydrogen atoms to form normal sigma bonds, results in the formation of four terminal hydrogen bonds.
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?when diborane undergoes complete methylation, the number of hydrogen ...
Complete Methylation of Diborane
When diborane (B2H6) undergoes complete methylation, it reacts with methyl groups (CH3-) to form trimethylborane (B(CH3)3).
Number of Hydrogen Atoms Replaced
The number of hydrogen atoms replaced during the methylation of diborane can be determined by looking at the structural formula of diborane and the product, trimethylborane.
Structural Formula:
- Diborane (B2H6) has a total of 12 hydrogen atoms.
- Trimethylborane (B(CH3)3) has a total of 3 methyl groups, each containing 3 hydrogen atoms. Therefore, the total number of hydrogen atoms in trimethylborane is 9.
Calculation:
- When diborane undergoes complete methylation, 3 methyl groups replace 3 hydrogen atoms each.
- Therefore, the total number of hydrogen atoms replaced during the methylation of diborane is 3 x 3 = 9 hydrogen atoms.
Therefore, the correct answer is 4) 3. During the complete methylation of diborane, 3 hydrogen atoms are replaced by methyl groups, resulting in the formation of trimethylborane.
When diborane (B2H6) undergoes complete methylation, it reacts with methyl groups (CH3-) to form trimethylborane (B(CH3)3).
Number of Hydrogen Atoms Replaced
The number of hydrogen atoms replaced during the methylation of diborane can be determined by looking at the structural formula of diborane and the product, trimethylborane.
Structural Formula:
- Diborane (B2H6) has a total of 12 hydrogen atoms.
- Trimethylborane (B(CH3)3) has a total of 3 methyl groups, each containing 3 hydrogen atoms. Therefore, the total number of hydrogen atoms in trimethylborane is 9.
Calculation:
- When diborane undergoes complete methylation, 3 methyl groups replace 3 hydrogen atoms each.
- Therefore, the total number of hydrogen atoms replaced during the methylation of diborane is 3 x 3 = 9 hydrogen atoms.
Therefore, the correct answer is 4) 3. During the complete methylation of diborane, 3 hydrogen atoms are replaced by methyl groups, resulting in the formation of trimethylborane.
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?when diborane undergoes complete methylation, the number of hydrogen atoms replaced are1)6 2)2 3)4 4)3?
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?when diborane undergoes complete methylation, the number of hydrogen atoms replaced are1)6 2)2 3)4 4)3? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about ?when diborane undergoes complete methylation, the number of hydrogen atoms replaced are1)6 2)2 3)4 4)3? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for ?when diborane undergoes complete methylation, the number of hydrogen atoms replaced are1)6 2)2 3)4 4)3?.
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