bidentate ligands

Submitted by Anne Bentley / Lewis & Clark College on Fri, 04/08/2011 - 15:10

Here's a short question to ponder for an April Friday afternoon. 

 

Consider the dimethylthiocarbamate ligand (dtc, structure shown on p. 328 of Miessler & Tarr 4th edition), which can coordinate to metals in a bidentate fashion through both sulfur atoms.  Why, on the other hand, does a ligand like oxalate coordinate through only one oxygen of the carboxylate resonance pair?  (Oxalate is bidentate, but only because it has two carboxylate groups.)

 

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New Members

Submitted by Sibrina Collins / College of Arts and Sciences at Lawrence Technological University on Mon, 03/28/2011 - 21:17

Dear Colleagues,

I am teaching an advanced inorganic course with 11 students this semester. Nine of my 11 students are now officially members of the VIPEr family. They registered today! At the end of the semester, these students are preparing a powerpoint presentation (5 slides About) that I hope will be useful VIPEr content. Topics include metal carbonyls, metal carbenes, metal hydrides, metal alkenes, and all about ferrocene! 

Sibrina

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EPR Reference
Anyone know a good, fundamental resource that would lay out the basics of EPR for someone trying to use the technique for the first time? Something that starts assuming genchem/intro inorganic levels of knowledge would be ideal!
Nancy Williams / Scripps College, Pitzer College, Claremont McKenna College Tue, 03/22/2011 - 23:50
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Paramagnetic Metal Complexes and NMR

Submitted by Sibrina Collins / College of Arts and Sciences at Lawrence Technological University on Fri, 03/11/2011 - 19:58

Dear Colleagues,

I hope all is well. I had a question about NMR and paramagnetic metal complexes. I understand that paramagnetic metal complexes often goes significant broadening and loss of splitting with NMR peaks. But, what is happening at the molecular level that actually causes the broadening of the peaks? I don't have a good understanding of this concept.

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Miessler and Tarr 4th Ed typos

Not to ding Miessler and Tarr, I love the book.  But i'm finding more typos than usual in the 4th ed. Someone suggested I create a forum post to log them to be helpful.  Here are the ones I can think of right now:

 

problem 12.21 (page 482):  R. L. Rheingold?? should be A. L. Rheingold.

Adam Johnson / Harvey Mudd College Sun, 03/06/2011 - 23:21
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Inorganic Lab Suggestions

Submitted by Nick K / University of Michigan-Flint on Thu, 03/03/2011 - 09:29
Wow how exciting my very first post!I am in the first year of my tenure-track appointment and i am currently teaching a jr/sr inorganic class for the first time. The person that i am replacing left under very unfriendly terms and as a consequence the lab component of the course hasn't been offered in 3 or 4 years.
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Bond Valence Analysis

A question for faculty out in VIPEr land, most likely of the solid state variety:

Does anyone teach bond valence sums or bond valence analysis in their inorganic courses?  I have not taught this topic in the past, but I have students reading a paper for class this semester that discusses bond valence analysis and bond valence parameters briefly.  I am looking for some leading references to point them to (juniors and seniors) that would gently introduce them to this topic.  Any suggestions either online or in texts or in the literature?

Maggie Geselbracht / Reed College Thu, 03/03/2011 - 03:33
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Teaching Problem Solving

Submitted by Barbara Reisner / James Madison University on Fri, 02/18/2011 - 05:56

Every year about this time in the semester when I teach General Chemistry I, I realize that one of the  significant obstacles in chemistry for my students is their ability to read and interpret problems - they get hung up on the translation of words.  I'd really like to find more examples of word problems that don't require specific chemical knowledge but do require this translation (and involve things like unit conversion and percentages). We develop a problem solving method in class, but I feel like working with this sort of problem would be really beneficial.

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