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Baeyer strain theory or strain theory explains specific behaviour of chemical compound
Chemical compound

A chemical compound is a Chemical substance consisting of two or more different chemical element Chemical bond together in a fixed mass ratio that can be split into simpler substances....
s in terms of bond angle strain
Angle strain

The presence of angle strain in a molecule indicates that in a specific chemical conformation there exist bond angles that deviate from the ideal bond angles required to achieve maximum bond strength....
.

It was proposed by Adolf von Baeyer
Adolf von Baeyer

Johann Friedrich Wilhelm Adolf von Baeyer was a Germany chemistry who synthesized indigo dye, and was the 1905 recipient of the Nobel Prize in Chemistry....
 in 1885 to account for the unusual chemical reactivity
Reaction rate

The reaction rate or rate of reaction for a reactant or product in a particular chemical reaction is intuitively defined as how fast a reaction takes place....
 in ring opening reactions of cyclopropane
Cyclopropane

Cyclopropane is a cycloalkane molecule with the molecular formula C3H6, consisting of three carbon atoms linked to each other to form a ring, with each carbon atom bearing two hydrogen atoms....
s and cyclobutane
Cyclobutane

Cyclobutane, C4H8, with a molecular mass of 56.107g/mol, is a four carbon alkane in which all the carbon atoms are arranged cyclically, hence cyclobutane....
s where this angle strain is relieved.

On ring strain
Ring strain

Ring strain is an organic chemistry term that describes the destabilization of a cyclic molecule?such as a cycloalkane?due to the non-favorable high energy Molecular geometry of its atoms....
 he noted in 1885:

William Henry Perkin, Jr.
William Henry Perkin, Jr.

William Henry Perkin, Jr. was an English people organic chemist who was primarily known for his groundbreaking research work on the degradation of naturally occurring organic chemistrys....
 was the first chemist to synthesize a cyclopropane ring as a doctoral student in the group of Baeyer. A few years earlier another student of Baeyer, Viktor Meyer
Viktor Meyer

Viktor Meyer was a Germany chemist and significant contributor to both organic chemistry and inorganic chemistry. He is best known for inventing an apparatus for determining vapour densities, the Viktor Meyer apparatus, and for discovering thiophene, a heterocyclic compound....
, had doubted whether a three-membered ring could exist at all.






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Baeyer strain theory or strain theory explains specific behaviour of chemical compound
Chemical compound

A chemical compound is a Chemical substance consisting of two or more different chemical element Chemical bond together in a fixed mass ratio that can be split into simpler substances....
s in terms of bond angle strain
Angle strain

The presence of angle strain in a molecule indicates that in a specific chemical conformation there exist bond angles that deviate from the ideal bond angles required to achieve maximum bond strength....
.

It was proposed by Adolf von Baeyer
Adolf von Baeyer

Johann Friedrich Wilhelm Adolf von Baeyer was a Germany chemistry who synthesized indigo dye, and was the 1905 recipient of the Nobel Prize in Chemistry....
 in 1885 to account for the unusual chemical reactivity
Reaction rate

The reaction rate or rate of reaction for a reactant or product in a particular chemical reaction is intuitively defined as how fast a reaction takes place....
 in ring opening reactions of cyclopropane
Cyclopropane

Cyclopropane is a cycloalkane molecule with the molecular formula C3H6, consisting of three carbon atoms linked to each other to form a ring, with each carbon atom bearing two hydrogen atoms....
s and cyclobutane
Cyclobutane

Cyclobutane, C4H8, with a molecular mass of 56.107g/mol, is a four carbon alkane in which all the carbon atoms are arranged cyclically, hence cyclobutane....
s where this angle strain is relieved.

On ring strain
Ring strain

Ring strain is an organic chemistry term that describes the destabilization of a cyclic molecule?such as a cycloalkane?due to the non-favorable high energy Molecular geometry of its atoms....
 he noted in 1885:

William Henry Perkin, Jr.
William Henry Perkin, Jr.

William Henry Perkin, Jr. was an English people organic chemist who was primarily known for his groundbreaking research work on the degradation of naturally occurring organic chemistrys....
 was the first chemist to synthesize a cyclopropane ring as a doctoral student in the group of Baeyer. A few years earlier another student of Baeyer, Viktor Meyer
Viktor Meyer

Viktor Meyer was a Germany chemist and significant contributor to both organic chemistry and inorganic chemistry. He is best known for inventing an apparatus for determining vapour densities, the Viktor Meyer apparatus, and for discovering thiophene, a heterocyclic compound....
, had doubted whether a three-membered ring could exist at all. For a long time Baeyer held the belief that even 6- and 7-membered rings were planar and subjected to ring strain.