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Date: 15-12-2016
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Date: 30-6-2019
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Review of Isomerism
As noted on several previous occasions, isomers are compounds with the same chemical formula but different structures. We’ve seen several kinds of isomers in the past few chapters, and it’s a good idea at this point to see how they relate to one another (Figure 1.1).
Figure 1.1 A summary of the different kinds of isomers.
There are two fundamental types of isomers, both of which we’ve now encountered: constitutional isomers and stereoisomers.
Constitutional isomers are compounds whose atoms are connected differently. Among the kinds of constitutional isomers we’ve seen are skeletal, functional, and positional isomers.
Stereoisomers are compounds whose atoms are connected in the same order but with a different spatial arrangement. Among the kinds of stereoisomers we’ve seen are enantiomers, diastereomers, and cis–trans isomers of cycloalkanes. Actually, cis–trans isomers are just a subclass of diastereomers because they are non–mirror-image stereoisomers:
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حمية العقل.. نظام صحي لإطالة شباب دماغك
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إيرباص تكشف عن نموذج تجريبي من نصف طائرة ونصف هليكوبتر
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شعبة مدارس الكفيل النسوية تطلق فعّاليات مخيم (بنات العقيدة) العشرين
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قسم التربية والتعليم يعقد اجتماعاً تحضيرياً لملاكاته استعداداً لانطلاق برنامجه التأهيلي
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متحف الكفيل يعقد أولى اجتماعاته التحضيرية لمؤتمره الدوليّ الخامس
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وفد قسم الشؤون الفكرية وسفير العراق في فرنسا يبحثان سبل تعزيز التعاون المشترك
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