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Chapter 3

Alkanes and Cycloalkanes

Структура алканов
Структура алканов
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 ...
Конституционные изомеры алканов
Конституционные изомеры алканов
Organic compounds of the same molecular formula can have different structural formulas called constitutional isomers, and the phenomenon is known as ...
Номенклатура алканов
Номенклатура алканов
In the late 19th-century, the number of new chemical compounds discovered increased tremendously. Hence, the necessity arose to develop a naming system ...
Физические свойства алканов
Физические свойства алканов
Alkanes are nonpolar molecules due to the presence of only carbon and hydrogen atoms. The electronegativity difference between carbon and hydrogen is ...
Проекции Ньюмана
Проекции Ньюмана
Different notations are used to represent the three-dimensional structure of molecules on two-dimensional surfaces. One of the most commonly used ...
Конформации этана и пропана
Конформации этана и пропана
In an organic molecule, free rotation about the carbon-carbon single bond results in energetically different conformers of the molecule. Due to this ...
Конформации бутана
Конформации бутана
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 ...
Циклоалканы
Циклоалканы
Cycloalkanes are saturated cyclic hydrocarbons with carbon atoms arranged in the form of rings. They have two fewer hydrogen atoms than the corresponding ...
Конформации циклоалканов
Конформации циклоалканов
Adolf von Baeyer attempted to explain the instabilities of small and large cycloalkane rings using the concept of angle strain — the strain caused ...
Конформации циклогексана
Конформации циклогексана
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 ...
Конформация стула из циклогексана
Конформация стула из циклогексана
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 ...
Стабильность замещенных циклогексанов
Стабильность замещенных циклогексанов
This lesson discusses the stability of substituted cyclohexanes with a focus on energies of various conformers and the effect of 1,3-diaxial ...
Дизамещенные циклогексаны: <em>цис-транс</em> изомерия
Дизамещенные циклогексаны: цис-транс изомерия
Depending upon the different spatial orientation of the substituents, the disubstituted cycloalkanes exhibit two types of stereoisomers. The cis isomers ...
Энергия сгорания: мера стабильности в алканах и циклоалканах
Энергия сгорания: мера стабильности в алканах и циклоалканах
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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