Hi, all,

We've got an old glovebox that's great for a teaching lab, though not much else. It's a flux box, meaning it has a bubbler on the back rather than a dry-train. The advantage of that is that you don't have to care for a dry train, and you only have to hook up nitrogen to it the week(s) you're doing the glovebox lab. It's not practical for storing compounds or research--it really is ideal for bringing up when you need to do a lab, and then not worrying about it for a year.

I reach out to the VIPEr community with a few questions.

How familiar is anyone with using dibenzoyl peroxide as a catalyst for brominations with NBS? 

If so did you use 75% remainder water or pure peroxide for the reactions?

VIPEr Colleagues,

I think this is an easy one! When you react K2[PtCl4] with DMSO to form cis-[PtCl2(DMSO)2], this should follow an associative mechanism, right? I love this synthesis because it is so simple to do. But, the prep (Inorg. Syn. 2002, 33, pg 189-196), reports 1H NMR data  in CD2Cl2 and CD3NO2. I am curious to know why not simply use CDCl3? Any thoughts? We are reacting it with a ligand to form a Pt complex that may exhibit anti-tumor behavior. I will find out within the next couple of weeks. 

SNC

Greetings VIPErs,

I am looking for molar absorptivity (or molar extinction coefficient) data for a handful of inorganic compounds (in solution), as a function of wavelength in the UV/visible spectrum. Can you help?

The compounds are Co(NO3)2, CoCl2, K2CrO7, AuCl3, K2CrO4, NiCl2, CuSO4, and KMnO4.

I have tried the following online resources without success: the CRC Handbook, the NIST Chemical WebBook, the Combined Chemical Dictionary, PubChem, SciFinder, and Google.

I am posting this on VIPEr as Adam so wisely suggested.  Any comments or suggestions would be greatly appreciated.

Hi everyone,

I'm working on some research that involves knowing some energy parameters for inorganic solid compounds, specifically the band gap and electron affinity or ionization potential.  I am looking for resources that would have this type of information available; mostly so far I spend a lot of time googling for papers.  Specifically, I'm interested in compounds where one of the consituents is in a reduced or non-standard oxidation state (like P in the +3 oxidation state).

Dear Colleagues,

Have you worked with P4S10? One of my colleagues is looking for some guidance on using it. Did you only open it in a glovebox or glove bag? Any guidance would be greatly appreciated.

Sibrina

Hello,

So, I just saw this and thought it was pretty nifty:

https://www.thermofisher.com/order/catalog/product/912A0911 (edit: removed broken link -  http://www.picospin.com/products/)

Its a small NMR machine (about 10lbs and less than 1 cubic foot of space) that sits on the bench for 20,000 USD.   its 45 MHz and uses a capillary, not NMR tubes, but still, benchtop NMR, without cryogenic liquids, and its a FT machine.