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Kapitel 3

Alkane und Cycloalkane

Struktur der Alkane
Struktur der Alkane
The formation of carbon-carbon bonds leading to the creation of the carbon chain is the basis of organic chemistry. August Kekulé and Archibald Scott ...
Konstitutionelle Isomere von Alkanen
Konstitutionelle Isomere von Alkanen
Organic compounds of the same molecular formula can have different structural formulas called constitutional isomers, and the phenomenon is known as ...
Nomenklatur der Alkane
Nomenklatur der Alkane
In the late 19th-century, the number of new chemical compounds discovered increased tremendously. Hence, the necessity arose to develop a naming system ...
Physikalische Eigenschaften von Alkanen
Physikalische Eigenschaften von Alkanen
Alkanes are nonpolar molecules due to the presence of only carbon and hydrogen atoms. The electronegativity difference between carbon and hydrogen is ...
Newman-Projektionen
Newman-Projektionen
Different notations are used to represent the three-dimensional structure of molecules on two-dimensional surfaces. One of the most commonly used ...
Konformationen von Ethan und Propan
Konformationen von Ethan und Propan
In an organic molecule, free rotation about the carbon-carbon single bond results in energetically different conformers of the molecule. Due to this ...
Konformationen von Butan
Konformationen von Butan
Unlike ethane and propane that have only two major conformations, butane has more than two conformers. The staggered form of butane in which the bulky ...
Cycloalkane
Cycloalkane
Cycloalkanes are saturated cyclic hydrocarbons with carbon atoms arranged in the form of rings. They have two fewer hydrogen atoms than the corresponding ...
Konformationen von Cycloalkanen
Konformationen von Cycloalkanen
Adolf von Baeyer attempted to explain the instabilities of small and large cycloalkane rings using the concept of angle strain — the strain caused ...
Konformationen von Cyclohexan
Konformationen von Cyclohexan
Cyclohexane does not exist in a planar form due to the high angle and torsional strain it would experience in the planar structure. Instead, it adopts ...
Stuhlkonformation von Cyclohexan
Stuhlkonformation von Cyclohexan
The chair conformation is the most stable form of cyclohexane due to the absence of angle and torsional strain. The absence of angle strain is a result of ...
Stabilität von substituierten Cyclohexanen
Stabilität von substituierten Cyclohexanen
This lesson discusses the stability of substituted cyclohexanes with a focus on energies of various conformers and the effect of 1,3-diaxial ...
Disubstituierte Cyclohexane: <em>cis-trans-Isomerie</em>
Disubstituierte Cyclohexane: cis-trans-Isomerie
Depending upon the different spatial orientation of the substituents, the disubstituted cycloalkanes exhibit two types of stereoisomers. The cis isomers ...
Verbrennungsenergie: Ein Maß für die Stabilität von Alkanen und Cycloalkanen
Verbrennungsenergie: Ein Maß für die Stabilität von Alkanen und Cycloalkanen
The low reactivity in alkanes can be attributed to the non-polar nature of C–C and C–H σ bonds. Alkanes, therefore, were  initially ...
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