The Periodic Table

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Bounty Hunter

00:11

Q: Which is the currently accepted mechanism of a Wittig reaction?

The Wittig reaction is one of the most significant advances in synthetic organic chemistry in the 20th century and rightfully won its discoverer, Georg Wittig, the Nobel Prize in Chemistry. A Wittig reaction is the addition of a phosphorus ylide (previously thought to be an ylene with a $\ce{C=P...

Loong

@BountyHunter Philantropist hat?

Jan

^ Chance to get a secret hat if your answer doesn’t get deleted xD

@Loong As if I ever, ever did something just for the hats ;)

Loong

ok, then it's all right

user228700

01:08

@paracresol It's rather... interesting that u seem to find ways to insult me even without really even saying anything.

user228700

@paracresol Here is an Indian-who politely asked me to get lost upon admitting that I don't speak German, mind you-who doesn't know any Hindi.

user228700

@paracresol Unfortunately boi, I don't answer to your commands. I'll translate it for you if u are able to find some politeness within yourself.

Loong

02:31

A: How do moderators permanently add Site Chat Room to main page sidebar?

Moderators don't have a tool to do this, and I don't believe that moderators request that CMs do it. I'm not sure when, or to whom, the system decides to show rooms in the sidebar.

@MelanieShebel ↑ That approximately summarizes what I know about that link to chat.

1,3-feeds

Q: Pin chat to the sidebar on main site?

Can we pin the link to the chatroom to the sidebar on the main site? It does not always appear. This was asked by another user in chat and discussed (I can't find it now, of course) and I thought it was a great idea, because I often also have a hard time finding the button. Perhaps it'll make c...

feature-request chat

Melanie Shebel

So is it just water, then?

Thanks, @Loong

DHMO

@Jan how do you know that amino(chloro)methanol will become formamide?

Melanie Shebel

I love how the wide array of available memes allow me to express nearly every thought without having to actually say anything. :P

DHMO

02:47

Melanie Shebel

hehe

6 hours later…

frostedcake

08:59

hey guys, do alcohols dissolve in non-polar solutions?

DHMO

09:58

@frostedcake solubility isn't as simple as a yes or no

And ethanol is quite soluble in pentane

1 hour later…

Alan Watch

11:03

@frostedcake depends on the property of solvent

2 hours later…

barlop

13:04

if I buy a packet of yeast, and throw it over one grain of sugar, then will the yeast consume the sugar? (no water).

Also will it make a difference if I rub some yeast together with sugar between my fingers and wear gloves so no water. Will the sugar get consumed?

Loong

← 2 messages moved from g-block elements

orthocresol

@Jan, is there a reason why you created terpenes? chemistry.stackexchange.com/revisions/65494/2

I couldn't find anything on meta.

Also, we seem to have created lipids, but I also can't find meta discussion on it. I guess lipids makes sense to have if we already have carbohydrates, proteins, and dna-rna. However, that would necessitate some serious retagging. (On a side note I feel like dna-rna should be renamed to nucleic-acids instead, but that's something for another day. Encouragingly I find that this has been mentioned once.)

DHMO

Do people here watch NileRed's videos?

orthocresol

13:23

@orthocresol Hmm, actually, we already have fats. I guess, to meta this goes.

Loong

meta seems to be still slow this week

orthocresol

Clearly, we need more moderator elections. :)

Loong

Well, you could step down. ;-)

orthocresol

A: By-elections or non-competitive recall of runners-up?

Since the last SO election was less than 6 months ago, we reached out to some of the runners up to see if they were interested. Typically, if an election is within 6 months we'll ask the runners up. If more than 6 months, then we'll call for a new election. We use the 6 month timeframe as a guide...

@M.A.R. Your chance to be a mod!

Loong

@orthocresol Do you have an opinion about the stereochemistry meta question? You have several answers in this field.

orthocresol

13:33

I'm still thinking about it.

My inclination is that we don't need it, but I don't really have a good reason, hence I didn't write anything yet.

Loong

The question also touches the issue of cascading tags.

orthocresol

Mm, it does.

And I was thinking, we have never removed x simply because it is a subset of y.

However, eventually we may need to do so, and having stereochemistry + chirality on a question has no real benefit over simply chirality.

Loong

And the more I think of it, I see that many OPs ask these questions because they don't know what kind of stereochemistry is present. Thus, they might not be able to chose the correct tag. And if we add the correct tag, we might already answer a part of the question.

I also don't think that many regular users want to favour or ignore only one tag of stereochemistry and chirality.

If you like answering such questions, you look at both tags. If you hate them, you would have to ignore both.

2 hours later…

paracresol

15:23

@Copper I'm "relatively" new to Chem.SE as well ;D (I joined about 3-4 months ago)

@geta \o/

getafix

hey

paracresol

What'd you get the Trendsetter hat for?

getafix

changing hats..

i think

paracresol

Wait...

I've changed hats too...

But I don't have one :(

Only once though :/

@Kaumudi.H Nah, I wasn't poking fun at you :/

getafix

566

Q: Winter Bash 2016 - All Hats

I decided to start the traditional secret hats post, but instead of just another "here is how you get the secret hats" post, to also add in all the hats. There are two answers: one for the secret hats, and one for the regular hats. Some notes about secret hats: A secret hat for correctly gue...

discussion winterbash secret-hats winterbash-2016

paracresol

15:28

@Kaumudi.H And no... I didn't tell you to "get lost" -_-

@getafix Ah, I see!

But flipping through hats that often is a pain in the arse...so it looks like I won't be getting it :'(

@Kaumudi.H Sigh Alright, could you please translate it for me sir? :3

Or wait...

Hey @geta, could you translate this for me?

yesterday, by CowperKettle

@paracresol Shubh sandhya! Naya Saal Mubarak Ho, Bhai!

getafix

15:46

Good evening! Happy new year, brother!

Or "blessed evening" if you are being literal..

paracresol

@getafix Thanks ^_^

DHMO

3 hours ago, by DHMO

Do people here watch NileRed's videos?

paracresol

Wait, @Cowper, we're brothers?! Woohoo \o/

@DHMO Hola o/

DHMO

hola como estas

paracresol

Um...

DHMO

15:58

wie sagt man "I see" in Deutsch?

paracresol

@DHMO I'm not your man for that ._.

DHMO

lol

have you ever made paracresol?

paracresol

@DHMO Nope, I still haven't fulfilled my life-long pursuit of giving up Chemistry and finding a(nother) life yet. Once I'm done with that I'll think about cooking up some paracresol ;)

@DHMO Nope...

DHMO

@paracresol I see

@paracresol you should watch them lol

paracresol

@DHMO Hush now...I'm watching something O_O

Precious Metal Refining & Recovery, Episode 11: Silver From Bang Snaps

►

DHMO

16:05

1,3-feeds

Q: Should there be a "stereoelectronics" tag?

At present, there isn't a tag for stereoelectronics (I have no idea if one existed in the past). Whilst there may be related tags (MO theory, molecular structure, sterics), I feel like stereoelectronics is quite a specific combination which potentially deserves its own tag (I bring this up becaus...

discussion tags

paracresol

16:23

Well @DHMO @geta I'll be seeing you guys later... Gute Nacht o/

DHMO

Gute Nacht

getafix

g'night!

orthocresol

17:05

Q: Density of water does not add up?

If the density of hydrogen is 0.09 g/ml and the density of oxygen is 1.429 g/ml, how is it that the density of water is 1 g/ml?

everyday-chemistry density

Loong

@orthocresol yes, I saw that. Also note that the unit for the density of the gases is wrong.

2 hours later…

Loong

18:49

> Please ignore any answers which talk about cosmology, they're just plain wrong.

hm?

Loong

19:38

This certainly does not help to correct the OPs obvious, grave misunderstanding. — Karl 29 mins ago

clairvoyance?

How do we know what the OP actually thought, tried, and didn’t understand – based on a single sentence in the question?

Jan

@orthocresol No real reason, I just felt it fit in well.

Jan

20:06

I had been thinking for quite some time why there is no natural-products tag — but those are very diverse so I felt like having terpenes, polyketides and alkaloids would be the better choice.

Loong

Then we need such posts for the correct tagging:

A: Natural Product class

It’s very hard to tell for some molecules a priori. For most, there are enough indicators. Polyketides: will typically have 1,3-functionalisation patterns, so hydroxy groups or keto groups are typically two carbons away from the next one. And most methyl groups also have a nonmethylated carbon...

;-)

NotCorey

20:24

@Jan Yay natural products

Also sadly no total-synthesis

Loong

@NotCorey good answers would be too long for this format. Please add details to narrow the answer set or to isolate an issue that can be answered in a few paragraphs. ;-)

NotCorey

Challenge accepted... I've never had a question closed (yet), maybe I can make it happen with the first ever total-synthesis homework post