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3:02 AM
@Secret I think that is not possible with a relaxed scan via modredundant. Your best options may be to define a z-matrix with the dummy atom and do a rigid scan and then re-optimise the minima/TS you find to construct the PES. Or you could just go ahead and guess the TS-structures and run irc calculations afterwards to get the PES. Or you can guess the minima and run QST calculations to get the PES. I'm not too sure if avogadro's conformation explorer works either.
@Secret I think this would make a good question for the main page. Someone might have a better idea, or maybe a different program has better capabilities... I'll encourage you to ask it.
 
 
2 hours later…
5:17 AM
!!flip
 
(ノ ̄ ̄∇ ̄ ̄)ノ~~~~~⌒━━┻━━┻━━
 
!!untable
 
┬─┬ ノ( ^_^ノ)
 
!!retable
!!redo
!!help
 
Hi! I'm the almighty bot of ChemistrySE's main chatroom. /!\ If you find me annoying, you can ignore me by clicking on my profile image and chosing "ignore this user" /!\ You can find my documentation here.
 
SBM
5:47 AM
You have bots in chatrooms? Cool
Hello
 
6:00 AM
!!greet/SBM
 
Welcome to The Periodic Table SBM! Here are our chat guidelines and it's recommended that you read them. If you want to turn Mathjax on, follow the instructions in this answer. Happy chatting!
 
6:34 AM
!!doubleflip/racoons
 
suooɔɐɹ\(`д´)/ɹɐɔoous
 
!!spam
 
right, now I cannot redelete Chembot's messages...
should have used !!!
 
SBM
What?
 
 
7 hours later…
2:06 PM
0
Q: Litmus paper reactions for mixed solutions

LukeI am wondering what could cause my litmus paper to first react to the alkaline. turning blue, and then changing to an acidic red color?

0
A: Litmus paper reactions for mixed solutions

Harika RaniLitmus paper is reacted first alkaline solution to get acidic condition so, it's turn blue colour. Then after that reacted to basic condition so, it's turn to red colour

 
 
6 hours later…
7:53 PM
Why does the army use acid?
To neutralize the enemy base.
 
 
2 hours later…
9:26 PM
Should we have weekly chat sessions as they do in hbar?
 
@MelanieShebel Maybe
@Buttonwood o/
 
@SammyGuergachi I used \mhchem to edit a little your reaction scheme under chemistry.stackexchange.com/questions/75408/…
 
I was just wondering if it could get more people talking to each other, get more activity on the site, idk, haha.
 
Hello @Mithoron and @MelanieShebel
 
Hey @Buttonwood
 
9:38 PM
@MelanieShebel The idea of a more regular "appointment" for ChemSE is good.
Maybe not necessary to have a long convention, but if one would know, every Wednesday (for example) at so-and-so is a short coming together, this reads for me like a recurrent "spring cleaning".
Did I understand this as your intent correctly, @MelanieShebel?
 
Not a spring cleaning, just a get together on chat.
I'd like to see users come on more frequently in general.
 
@MelanieShebel Who wouldn't ;)
 
So lesser on action, rather on community building?
 
Yeah, get people to return to the site time and time again.
Plus, the more full the chat room, the more likely people will talk in it.
Nobody wants to come in to a chat room with "last message posted 12 hours ago."
 
or "6 hours later", provided some are in Asia and ANZAC, others Europe, and the Americas.
Yet with the spread ChemSE among the users already has (geographically speaking), it may be beneficial to take into consideration the different time zones, too.
To find a time that is sufficiently convenient for the users in their local time.
Or several times per day.
As a thought, open to discussion / adapting change, how does ACS does with their webinars likely accessible in other places than the lower 48, too?
Are these webinars re-performed for other regions, too, or are they set-up "once" for all interested around the globe?
 
9:50 PM
How do people get to know each other through ACS other than at conferences?
I've found their site hard to use.
 
I share your observation, the conferences are at least as much about presentation of new (chemical) findings as well as finding a potential sparring partners.
Especially the poster sessions.
Other avenues, well, if researchers travel across the country for a small lecture, and when PIs "exchange" their co-workers.
 
What about online, like on the ACS site?
I get a lot of emails asking how they could improve, but it's usually just tick boxes.
I would say, give us a place to talk online, allow us the opportunity to get involved, etc...
If those things are already on the ACS site, I'm not seeing them.
 
Like a meetup, only that the gatherings are not restricted to personal appearance.
The page on
does not really look like "suitable". Apparently set up as a pin board, rather than a chat box.
Nor the subgroups like communities.acs.org/…, either
 
10:06 PM
A chat event doesn't seem like it would work.
Physics chat had an event which is how I thought of the idea
And nobody showed.
 
I confess, my activities on PhysSE are dormant; and I missed the event you refer to.
May I ask you, do you still have an address of this event, so that I may have a look (even a posteriori) to know better what you refer to?
Is it "the meeting" that is scheduled to happen again on June 13?
 
10:33 PM
probably haha
I just got a notification saying a chat event was starting so I clicked it, but nobody showed.
 
1
Q: Analysis of methylphenidate (Ritalin) HCl extended release tablets

user21398For a project I have to determine the drug concentration release profile of self-made methylphenidate HCl (MHCl) extended release tablets (hydrophilic matrix). We are thus doing a dissolution test as described conform the US/Eur. Pharmacopeia. However a problem we are facing is that we are not su...

 
"Back" to ChemSE, as a crystallography-related question on PhysSE got my attention.
Actually, this showed me at least two things:
PhysSE does not implement \mhchem syntax, which renders some things more difficult than used to.
And secondly, PhysSE apparently does not allow \pu{} for constructs like $m = \pu{5 kg}$, too.
-
An other UV-Vis study intended by @Bounty Hunter.
@Bounty Hunter While not knowing the protocol in US/Eur. Pharmacopeia about Ritalin in tablets, I had guessed there is an option to go via HPLC-MS.
 

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