hello? echo? user:xcomradex/tmscl
- 1 NaH is soluble in no organic solvents
- 2 WMe6 is not agostic..
- 3 Welcome to the Wikipedia
- 4 Molecular and Cellular Biology Wikiproject Newsletter!
- 5 This month's WP:MCB Article Improvement Drive article
- 6 Rail and communication privatisation
- 7 License tagging for Image:Tetraxenogold.jpg
- 8 FA nomination for Enzyme inhibitor
- 9 Molecular and Cellular Biology WikiProject Votes
- 10 Request for peer review of Enzyme kinetics
- 11 This month's WP:MCB Article Improvement Drive article
- 12 One more vote for the coordinator of the Molecular and Cellular Biology Wikiproject
- 13 Molecular and Cellular Biology Wikiproject Newsletter
- 14 This month's winner is proteasome!
- 15 This month's winner is RNA interference!
- 16 This month's MCB Collaboration of the Month article is Peripheral membrane protein!
- 17 Orphaned fair use image (Image:Tetraxenogold.jpg)
- 18 WikiProject Cell Signaling
- 19 Ninhydrin info ref
NaH is soluble in no organic solvents
NaH is not soluble in any organic solvent. I am quite sure. You might be able to find statements otherwise, but such would be highly revolutionary.--Smokefoot 02:11, 7 July 2006 (UTC)
- Ok fair enough, i was under the impresssion that NaH was soluble in DMF, but i have never tried this myself. i googled before writing into the page, and found a reference to a solution of NaH in DMF. since your comment i have had a more indepth look around, and it seems it remains a slurry in DMF. my bad, will fix now. thanks for checking, Xcomradex 02:44, 7 July 2006 (UTC)
Well its not a stupid mistake. Like your correcting me on Na3PO3: live and learn. Small naked ions in organic solvents are rare, even anhydrous F- in soln is hotly discussed. Hence my comments on O2- being impossible. As I ponder my absolutist comments, I wonder what happens when 2,2,2-crypt and NaH interact in THF. --Smokefoot 03:42, 7 July 2006 (UTC)
- i guess there's only one way to find out... ps. are ions such as H- and F- just too hard (in terms of HSAB) to exist on their own in organic solvents? or is it something more complex? Xcomradex 04:09, 7 July 2006 (UTC)
- F- apparently does exist - NMe4F in MeCN. But 99% of what organic synthesis groups call fluoride is HF2-, I am pretty sure. The problem, as I understand it, is charge density: one minus smeared over a tiny sphere. And dianions have a greater problem. In water and ROH, all bets are off due to acid base reactions. Similarly small cations, esp H+, which doesnt exist per se in soln. At least that is my sense of the literature. --Smokefoot 04:59, 7 July 2006 (UTC)
- are you sure about NMe4F? i know Bu4NF TBAF is used as the hydrate, attempting to dry it can result in decomposition (reversion to tributylamine and butyl fluoride allegedly). if anything, i would have thought Me4NF would have even less trouble reverting to methyl fluoride. but i am one of these aforementioned hand waving organic chemists... :)
- I also am at the edge of my chemical comfort zone, but the thinking I recall is that naked or nearly naked F- deprotonates beta to the N to give butene, HF (or really HF2- aka bifluoride) and Bu3N in the attempts to dehydrate Bu4NF. So-called Hoffmann elimination or degradation. Related to thermal decomp of Bu4NOH. OH- and F- are similar.--Smokefoot 06:12, 10 July 2006 (UTC)
WMe6 is not agostic..
THe D3h structure is well known now, but is agostic bonding implicated?--Smokefoot 12:58, 10 August 2006 (UTC)
- welcome back ;-) my understanding was the distortions in the structure were due to a textbook example of an agostic interaction, with a tighter W-C-H bond angle indicating donation from a C-H bond, and that a C-H bond was lengthened due to the electronic change. i'll try to find a link to the crystal structure. Xcomradex 13:06, 10 August 2006 (UTC)
- don't know if you have access to non open-source lit, but the paper is Seppelt, K. et.al. Science (1996) 271 626- . it was the one i was thinking of anyway. and JACS (1996) 3018-24 has the computational chem analysis. Xcomradex 13:24, 10 August 2006 (UTC)
- Yes, that's the paper - no evidence for or against agostic interactions. Ditto for subsequent discussions so far as I can see.--Smokefoot 22:25, 11 August 2006 (UTC)
- really? it was given to us as an example of agostic interactions. give me a few days, i'll scifinder it and see what i can come up with. Xcomradex 01:47, 12 August 2006 (UTC)
- Happy hunting, an interesting direction. The molecule is indeed where one might expect an agostic interaction because of the 12e count. Few instructors know the area well. A great source is the Kubas book, if you can get that. It would be nice to have an article on WMe6 itself since you've got the Seppelt paper. Most of the clearcut agostic CH3-M interactions are in the zirconacene area. --Smokefoot 05:07, 12 August 2006 (UTC)
i've only authored one page, the now heavily modifed petasis reagent, Cp2TiMe2, so i could have a crack at WMe6. thanks for your help by the way. Xcomradex 07:07, 12 August 2006 (UTC) Well if it got lots of edits, that is a very good sign that you did something others care about, so go ahead and do WMe6. It does not need to be a masterpiece. --Smokefoot 18:52, 12 August 2006 (UTC)
It looks like nobody's bothered to officially welcome you yet, so: welcome, Xcomradex!
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(P.S.: I notice that you have experience and interest in biochemistry. Those of us over at the Wikiproject on Molecular and Cellular Biology really could use a hand, if you're interested. Cheers! – ClockworkSoul 16:58, 28 August 2006 (UTC))
- My pleasure. I'm trying like crazy to breathe some life into WP:MCB, so any little bit helps. Why not stop by and add yourself to the list of participants, so you can receive the newsletter we send out about once every month? Who knows - you might find something interesting that you'll want to help out on. Oh, and WP:BEER is alot of fun, too. I don't get to spend much time helping out over there anymore, but it's a worthy project if I've ever seen one. :) Cheers! – ClockworkSoul 17:22, 29 August 2006 (UTC)
- Regarding the colors, no they're not necessary, but everybody else seems to like them, and they're doing no harm, so they're okay with me. While it's true you'll never see anything like that in the primary literature, lots of non-scientists come to Wikipedia for their information, and they, too, seem to appreciate it. As an example, several people have posted exasperated queries on the talk page about the diagrams, not understanding the practice of not explicitly identifying carbons and hydrogens, that go along the lines of "wait, where are the carbons?" Cheers! – ClockworkSoul 04:27, 30 August 2006 (UTC)
Molecular and Cellular Biology Wikiproject Newsletter!
|As you've no doubt noticed, there's a new Molecular and Cellular Biology Wikiproject newsletter, which will be sent out about once a month to all WP:MCB members. This newsletter is designed to perform two equally important functions. Firstly (and obviously, perhaps) it will serve to inform the members of the MCB project of such things as important discussions, votes, and article improvement drives. Secondly, and perhaps more importantly, the periodic correspondance will hopefully encourage a greater level of participation from the MCB community by acting as a gentle reminder of many of the the interesting tasks that are awaiting completion. If you prefer to receive this newsletter in the form of a link, or not receive it at all, you can add your name at Wikipedia:WikiProject Molecular and Cellular Biology/Newsletter/Opt Out List.|
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featured article status.
Rail and communication privatisation
Hi, I noted your comments on NZ rail and telecom privatisation effects. We have had the same in South Africa, with "ownership" going to friends of the powers-that-be. Fortunately the persons most affected by the railway problems are the voters most targeted by the ruling party, so there is a grassroots call for improvement which cannot be ignored, while a second and possibly third private telecom provider has been approved to (hopefully) show up the lack of competence of the present government-protected "private" monopoly. But I believe that cheap and efficient transport and communication are national issues, and should not be left to business to provide. Ah well, wheels turn.. --Seejyb 07:02, 9 September 2006 (UTC)
- same here, the government has recently forced the previously untouchable telecom to unbundle the local loop, allowing better competition into the market. but anyone can see there are certain industries that cannot be effectively left to free market, where competition is too costly for an actual free market to apply (power generation and distribution, railroads, airports...). thankfully NZ seems to waking up to this reality, and the current govt has made steps for change. Xcomradex 13:27, 9 September 2006 (UTC)
License tagging for Image:Tetraxenogold.jpg
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FA nomination for Enzyme inhibitor
Hi there. Since you listed enzymology as an interest in the Mol Biol project, I was wondering if you could have a look at this page and give me a few ideas on improving it? Thanks! TimVickers 21:15, 17 September 2006 (UTC)
- You are quite right that tight-binding inhibitors are not strictly irreversible, but this is a grey area and the kinetics are the same as irreversible, so that is why I placed them in that section. I tried to get around this by firstly mentioning tight-binding in reversible, but saying these cases will be discussed in the irreversible section. TimVickers 13:37, 19 September 2006 (UTC)
Hi again, thanks for your efforts. Enzyme inhibitor is now a FA. TimVickers 14:38, 21 September 2006 (UTC)
Molecular and Cellular Biology WikiProject Votes
|The Molecular and Cellular Biology WikiProject has recently opened two surveys that will help to decide the direction of the project. First, nominations are currently being accepted for the position of coordinator of the project. Second, votes and additional suggestions for the official title of that position are also being taken. As a member of the project, we hope that you'll drop by and voice your opinion. – ClockworkSoul 03:57, 18 September 2006 (UTC)|
Request for peer review of Enzyme kinetics
featured article status.
One more vote for the coordinator of the Molecular and Cellular Biology Wikiproject
Since two of the three editors nominated for Coordinator of the MCB Wikiproject declined their nominations, one more vote has been posted: should the remaining nominee, ClockworkSoul, be named as the coordinator, or should nominations be reopened? Every opinion counts, so please vote! – ClockworkSoul 17:55, 17 October 2006 (UTC)
Molecular and Cellular Biology Wikiproject Newsletter
|When people visit the project, the very first thing that they see tends to be the project's main page, and with this in mind, the main page has been completely overhauled. To enhance readability the various "goals" sections have been merged, and a detailed "how you can help" section has been added. To increase accessibility for more established members, the links to any resources that were in the main body text have been moved onto the navigation bar on the right. Finally, the whole page has been nicely laid out and given a nice attractive look.|
|I'm proud to announce the addition of out newest feature: peer review! The MCB peer review feature aims serve as a stepping stone to improve articles to featured article status by allowing editors to request the opinions of other members about articles that they might not otherwise see or contribute to.|
|We’ve had quite a bit of progress on the worklist article in the past month. Not only has the list itself nearly doubled in size from 143 to 365 entries, but an amazing three articles have been advanced to FA status, thanks in great part to the efforts of our very own TimVickers! Remember, the state of the worklist is the closest thing we have to quantifying the progress of the project, so if you get the chance, please take a look at the list, pick a favorite article, and improve it!|
|Last month's Collaboration of the Month, cell nucleus, was a terrific success! In one month, the article went from a dismal stub to an A-class article. Many thanks to all of the collaborators who contributed, especially ShaiM, who took on the greatest part of the burden. This month's Collaboration of the Month, adenosine triphosphate, isn't getting nearly the attention of its predecessor, so if you can, please lend a hand!|
|The project has a new coordinator, ClockworkSoul! The role - my role - of coordinator will be to harmonize the project's common efforts, in part by organizing the various tasks required to make the project run as smoothly and completely as possible. Many thanks to those who supported me and those participated in the selection process.|
This month's winner is proteasome!
featured article status. Last month's collaboration was adenosine triphosphate.
This month's winner is RNA interference!
featured article status. Last month's collaboration was proteasome.
This month's MCB Collaboration of the Month article is Peripheral membrane protein!
|Peripheral membrane protein
featured article status. Last month's collaboration was RNA interference.
Orphaned fair use image (Image:Tetraxenogold.jpg)
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WikiProject Cell Signaling
Hi there. I noticed you listed "Enzyme kinetics and inhibition, chemical biology, and chemical aspects of biological reactions" as an interest on WikiProject Molecular and Cellular Biology. These interests may intersect with WikiProject Cell Signaling, which I invite you to join. Biochemza, 22:38, 3 November 2007 (UTC)
Ninhydrin info ref
Just wondeirng if you can message me your reference paper/link for the section you added on 30th May 2006 to Ninhydrin which mentioned the formation of iminium salts being an indicator of secondary amines?