The Periodic Table

« first day (2250 days earlier) ← previous day next day → last day (2434 days later) »

Gaurang Tandon

03:25

A: How does the addition of acetone cause a shift from hexaaquacobalt(II) to tetrachloridocobaltate(II)?

I think that the answer relates to the relative dielectric constant of the medium, as you replace water with ethanol (or acetone) or increase the temperture then the relative dielectric constant decreases. By lowering the relative dielectric constant you will make the coordination of the anions ...

Could anyone help me understand Nuclear's answer? I am not sure how good/bad it is

12 hours later…

mhchem

15:38

@GaurangTandon It looks good on my high-res monitor. How does $\equiv$ ( $\equiv$ ) look like. It they render differently, I need to take a closer look.

4 hours later…

Mithoron

19:21

@GaurangTandon ? It lacks formatting completely and orthography is poor...

3 hours later…

Bounty Hunter

22:04

Q: Nomenclature of lithiated dithianes

Lithiated dithianes have a few uses in organic synthesis (albeit fairly niche ones) such as the Corey-Seebach alkylation / Corey-Seebach reaction, which uses dithianes as masked acyl anions (d1 synthons) as shown below. Searching through the 2013 IUPAC recommendations for organic nomenclature...

Q: Why don't alkynes undergo preferential anti bromination to the degree that alkenes do?

Alkenes, for the most part (unless there is a phenyl group or highly ionising solvent) undergo almost exclusively anti addition of bromine. However, under similar conditions alkynes, although undergo preferential anti-addition, it is not as exclusive as alkenes. Even with electron withdrawing sub...