Read More
Date: 12-7-2019
1126
Date: 28-1-2022
2085
Date: 17-1-2020
1228
|
The spatial arrangement (stereochemistry) of cyclohexane and other organic compounds are studied conveniently with the aid of Dreiding models, which are made with standard bond angles and scaled bond distances. The bonds have stainless-steel rods that make a snap-fit into stainless-steel sleeves. Rotation is smooth about the bonds and there is sufficient flexibility to accommodate some angle strain. Dreding models of the conformations of cyclohexane are shown in Figure 12-7.
Figure 12-7: Dreiding models of the cyclohexane conformations.
|
|
دور النظارات المطلية في حماية العين
|
|
|
|
|
العلماء يفسرون أخيرا السبب وراء ارتفاع جبل إيفرست القياسي
|
|
|
|
|
اختتام المراسم التأبينية التي أهدي ثوابها إلى أرواح شهداء المق*ا*و*مة
|
|
|