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Date: 22-11-2018
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Date: 10-3-2019
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Date: 4-12-2018
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Digallane
Digallane, Ga2H6, is prepared by below reaction; the product condenses at low temperature as a white solid (mp 223 K) but decomposes above 253 K.
Figure 1.1 summarizes some reactions of B2H6 and Ga2H6. Compared with the much studied B2H6, Ga2H6 has received only recent attention, and not all reaction types can be compared. However, three points should be noted:
This last class of reaction is well documented and the examples in Figure 1.1 illustrate two reaction types with the steric demands of the Lewis base being an important factor in determining which pathway predominates. For example, two NH3 molecules can attack the same B or Ga centre, resulting in asymmetric cleavage of the E2H6 molecule; in contrast, reactions with more sterically demanding Lewis bases tend to cause symmetric cleavage.
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علامات بسيطة في جسدك قد تنذر بمرض "قاتل"
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أول صور ثلاثية الأبعاد للغدة الزعترية البشرية
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مكتبة أمّ البنين النسويّة تصدر العدد 212 من مجلّة رياض الزهراء (عليها السلام)
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