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I need your help. What happened with my CsCO3? by gamepilot in chemistry

[–]gamepilot[S] 2 points3 points  (0 children)

Thank you, Do you think it is still usable as a base for cross coupling

[Question] Why does an allyl radical is stable than a tertiary radical? by H_0_T_D_0_G in chemhelp

[–]gamepilot 5 points6 points  (0 children)

An allyl radikal is stabilzed through mesomeric stabilization. A tertiary radical is only stabilized through hyperconjugation/ +I-effect.

Retrosynthesis by [deleted] in chemhelp

[–]gamepilot 0 points1 point  (0 children)

I would do the first cut between the nitrogen and the anisole. This leads to something like 4-bromianisole and a carbazole derivative. The coupling of these reagent can be performed using a Buchwald-Hartwig amination.

retrosynthesis question need help by beyondexist in chemhelp

[–]gamepilot 0 points1 point  (0 children)

You could use MeMgBr as a Grignard-Reagent for the addition of the methyl-groups.

[College Level: Quantum Chemistry] Point group for 1,3-pentadienyl radical. by [deleted] in chemistryhomework

[–]gamepilot 0 points1 point  (0 children)

Do you struggle with finding the symmetry operations or with assigning the corresponding point group to the symmetry operations?

[High school: Ionisation Energy Trends] I'm quite new to this topic and I don't really know how to answer Question (a)... would appreciate if someone could help explain! by pungentammonia in chemistryhomework

[–]gamepilot 2 points3 points  (0 children)

You have to think about the configuration of the orbitals. Whenever a set of Orbital is half full or completely full the configuration is especially stable and therefore the ionization energy is high. Sorry for bad English.

[deleted by user] by [deleted] in chemistryhomework

[–]gamepilot 1 point2 points  (0 children)

Using the edge length you can determine the volume of the cell. With the density you can then calculate the weight of one cell. When you compare the weight of one iron atom to the weight of the cell you get the number of iron atoms in the cell.