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Date: 28-11-2016
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Date: 19-8-2016
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Date: 28-11-2016
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Structural isomerism: ionization isomers
Ionization isomers result from the interchange of an anionic ligand within the first coordination sphere with an anion outside the coordination sphere. Examples of ionization isomers are violet [Co(NH3)5Br][SO4] (prepared by reaction scheme 1.1) and red [Co(NH3)5(SO4)]Br (prepared by reaction sequence 1.2). These isomers can be readily distinguished by appropriate qualitative tests for ionic sulfate or bromide, respectively. The isomers are also easily distinguished by IR spectroscopy; free and coordinated sulfate ions give rise to one or three IR active S_O stretching vibrations respectively.
(1.1)
(1.2)
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دراسة يابانية لتقليل مخاطر أمراض المواليد منخفضي الوزن
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اكتشاف أكبر مرجان في العالم قبالة سواحل جزر سليمان
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اتحاد كليات الطب الملكية البريطانية يشيد بالمستوى العلمي لطلبة جامعة العميد وبيئتها التعليمية
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