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Chapter 3

Alkanes and Cycloalkanes

هيكل الألكانات
هيكل الألكانات
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 ...
الأيزومرات الدستورية للألكانات
الأيزومرات الدستورية للألكانات
Organic compounds of the same molecular formula can have different structural formulas called constitutional isomers, and the phenomenon is known as ...
تسمية الألكانات
تسمية الألكانات
In the late 19th-century, the number of new chemical compounds discovered increased tremendously. Hence, the necessity arose to develop a naming system ...
الخصائص الفيزيائية للألكانات
الخصائص الفيزيائية للألكانات
Alkanes are nonpolar molecules due to the presence of only carbon and hydrogen atoms. The electronegativity difference between carbon and hydrogen is ...
إسقاطات نيومان
إسقاطات نيومان
Different notations are used to represent the three-dimensional structure of molecules on two-dimensional surfaces. One of the most commonly used ...
مطابقات الإيثان والبروبان
مطابقات الإيثان والبروبان
In an organic molecule, free rotation about the carbon-carbon single bond results in energetically different conformers of the molecule. Due to this ...
مطابقات البوتان
مطابقات البوتان
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 ...
الألكانات الحلقية
الألكانات الحلقية
Cycloalkanes are saturated cyclic hydrocarbons with carbon atoms arranged in the form of rings. They have two fewer hydrogen atoms than the corresponding ...
مطابقات الألكانات الحلقية
مطابقات الألكانات الحلقية
Adolf von Baeyer attempted to explain the instabilities of small and large cycloalkane rings using the concept of angle strain — the strain caused ...
مطابقات الهكسان الحلقي
مطابقات الهكسان الحلقي
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 ...
تشكيل كرسي الهكسان الحلقي
تشكيل كرسي الهكسان الحلقي
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 ...
استقرار الهكسان الحلقي البديل
استقرار الهكسان الحلقي البديل
This lesson discusses the stability of substituted cyclohexanes with a focus on energies of various conformers and the effect of 1,3-diaxial ...
الهكسان الحلقي غير المستبدل: <em>أيزوميرية رابطة الدول المستقلة</em>
الهكسان الحلقي غير المستبدل: أيزوميرية رابطة الدول المستقلة
Depending upon the different spatial orientation of the substituents, the disubstituted cycloalkanes exhibit two types of stereoisomers. The cis isomers ...
طاقة الاحتراق: مقياس للاستقرار في الألكانات والألكان الحلقي
طاقة الاحتراق: مقياس للاستقرار في الألكانات والألكان الحلقي
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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