learnin to learn Posted July 20, 2006 Report Share Posted July 20, 2006 This thread is for all those who either wish to learn more about chemistry, or have questions on basic or advanced chemistry skills, formulas etc. Feel free to ask questions!!!! /forums/images/smilies/banana_sign.gif Quote Link to comment Share on other sites More sharing options...
Mercedes Benzene Posted July 20, 2006 Report Share Posted July 20, 2006 I am prepared to teach!:) Anchovyforestbane 1 Quote Link to comment Share on other sites More sharing options...
UncleAl Posted July 20, 2006 Report Share Posted July 20, 2006 Who can propose a tetradentate ligand with a -4 charge such that three of them chelate two Co(3+) to give a helicate complex as described below? Uncle Al likes salts of chiral complex ions with geometrically (nearly) identical cations and anions. Example: Resolved [Co(en)3](3+) is almost exactly superposable upon [Co(ox)3](3-), http://www.mazepath.com/uncleal/xions.pngstereoimages to make the two mirror-image salts, http://www.mazepath.com/uncleal/xsalt.pngstereoimages One can get very clever and create helicates by linking bidentate ligands. Here we look at homochiral [Co(phen)3](3+) and [Co2(bisphen)3](6+) http://www.mazepath.com/uncleal/xheli.pngstereoimages It obviously works for [Co(bipy)3](3+) and [Co2(bisbipy)3](6+), too. Now for the fun part! Who can propose a helicate ligand that will give isomorphous [Co2(ligand)3](6-)? Don't be shy! pgrmdave 1 Quote Link to comment Share on other sites More sharing options...
learnin to learn Posted July 20, 2006 Author Report Share Posted July 20, 2006 to start out, what is a ligand? Quote Link to comment Share on other sites More sharing options...
Mercedes Benzene Posted July 20, 2006 Report Share Posted July 20, 2006 Oh wow. I wish I was best friends with you UncleAl. It's unfortunate that I got excited when I read your last post. Who can propose a tetradentate ligand with a -4 chargei didn't know there was such a thing. I can't think of any with a -4 charge. I guess I'm not really a professional chemist. :) Quote Link to comment Share on other sites More sharing options...
Jay-qu Posted July 20, 2006 Report Share Posted July 20, 2006 ligands are atoms or molecules that share its electons with a central ion. Im happy to lend my insights to anyone that needs help. And al I dont think thats 101 :) Quote Link to comment Share on other sites More sharing options...
Drip Curl Magic Posted July 20, 2006 Report Share Posted July 20, 2006 two nights ago, I was going through a list of college classes. I decided to embark on a trail leading to chemistry synthesis. I have a long way to go. But If all goes well, I should be starting this fall. >< Quote Link to comment Share on other sites More sharing options...
Drip Curl Magic Posted July 20, 2006 Report Share Posted July 20, 2006 Who can propose a tetradentate ligand with a -4 charge such that three of them chelate two Co(3+) to give a helicate complex as described below? Uncle Al likes salts of chiral complex ions with geometrically (nearly) identical cations and anions. Example: Resolved [Co(en)3](3+) is almost exactly superposable upon [Co(ox)3](3-), http://www.mazepath.com/uncleal/xions.pngstereoimages to make the two mirror-image salts, http://www.mazepath.com/uncleal/xsalt.pngstereoimages One can get very clever and create helicates by linking bidentate ligands. Here we look at homochiral [Co(phen)3](3+) and [Co2(bisphen)3](6+) http://www.mazepath.com/uncleal/xheli.pngstereoimages It obviously works for [Co(bipy)3](3+) and [Co2(bisbipy)3](6+), too. Now for the fun part! Who can propose a helicate ligand that will give isomorphous [Co2(ligand)3](6-)? Don't be shy! wow, so, this is what I've gotten myself into. *gulp* Quote Link to comment Share on other sites More sharing options...
UncleAl Posted July 20, 2006 Report Share Posted July 20, 2006 wow, so, this is what I've gotten myself into.In September 1969 1200+ students enrolled in MSU organic chemistry/majors. 350 made it to the second term. 17 graduated BS/Chem. Elitism insists the better is preferable to the worse. Uncle Al is an elitist, as were the other 16. Evolution is a hoot if you are one of the survivors. Boerseun 1 Quote Link to comment Share on other sites More sharing options...
pgrmdave Posted July 20, 2006 Report Share Posted July 20, 2006 Which MSU is that, Unc? There are at least two that I know of... Quote Link to comment Share on other sites More sharing options...
UncleAl Posted July 20, 2006 Report Share Posted July 20, 2006 Moo U, Michigan State. In 1969 the Chemistry building was newly constructed - almost a square block of stuff. 5.5 stories tall, three stories deep, and a lot of the basement labs had lead-lined doors. Great scientific glassblowing course. Don't go there. Out-of-state students are vigorously screwed from the moment their feet touch the campus. Summers are hellacious heat, humidity, and mosquitoes. Quote Link to comment Share on other sites More sharing options...
Jay-qu Posted July 21, 2006 Report Share Posted July 21, 2006 started with 1200+ and finished with 17.. wonder how many will get through mine, it only started with 16! Quote Link to comment Share on other sites More sharing options...
Mercedes Benzene Posted July 21, 2006 Report Share Posted July 21, 2006 started with 1200+ and finished with 17.. wonder how many will get through mine, it only started with 16! I want to major in organic chemistry one day too...Then again, I have a bunch of majors that I want to achieve once I go to college. :naughty: Quote Link to comment Share on other sites More sharing options...
Jay-qu Posted July 21, 2006 Report Share Posted July 21, 2006 I have a few on the list to, but I could be here forever learning - just want to get out into it really. What do you do for a job UncleAl? Quote Link to comment Share on other sites More sharing options...
UncleAl Posted July 21, 2006 Report Share Posted July 21, 2006 What do you do for a job UncleAl?Industrial organic chemist: fine and exotic synthesis, CAD molecules; insect ecdysteroid mimesis; human implantable prostheses, radiation grafting, hydrogels, and medical polymers; novel routes to ambient pressure diamond synthesis. Management, "GODDAMN IT, Schwartz, it CAN'T work that way!"Uncle Al, "but it does" I have a 1450 carat Type IIb "diamond" (glass paperweight) on my desk courtesy of my current CFO. It could happen - they want bulk abrasive. Huge gems would be deliciously insubordinate. Quote Link to comment Share on other sites More sharing options...
pgrmdave Posted July 21, 2006 Report Share Posted July 21, 2006 Management, "GODDAMN IT, Schwartz, it CAN'T work that way!"Uncle Al, "but it does" I get the impression that Unc is nearly the same in real life as he is online :lol: Quote Link to comment Share on other sites More sharing options...
Jay-qu Posted July 22, 2006 Report Share Posted July 22, 2006 sounds like an interesting job :eek2: Quote Link to comment Share on other sites More sharing options...
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