[antelope]

Hi! So here is the reaction for the nitrous acid test. I tried demonstrating the mechanism for the reaction below but I think I went wrong somewhere. Could someone please clarify where I went wrong. Beta-Naphthol should give an intense orange red colour after the reaction is complete.

[Hunter2]

It looks for me ok, only Cr I dont know why you wrote it beside the Nitrogens.

[antelope]

That was just put there to imply that a compound containing chromium reacts with the aryldiazonium ion.

[opsomath]

No it's not, I think rather that someone meant to write "Cl" instead of "Cr."

[antelope]

Ah yes, you're right. Well is the chlorine meant to be even attached to the nitrogen?

[opsomath]

No, it is only the counterion. Here is the crystal structure of the solid form:

http://upload.wikimedia.org/wikipedia/commons/e/e5/Benzenediazonium-chloride-xtal-3D-vdW.png

As you can see, the chloride ions kind of stack in T-shaped configuration relative to the N-N bond.

[antimatter101]

Three keywords:

Arenediazonium salts
Azo compounds
Sandmeyer reaction