15N enriched secondary amines from enriched ammonium chloride
T2 relaxation of protons are reproducible but fluctuating at different temperatures.
10 November 2013 2,838 2 View
Hydroxyl groups have pKa 13.6(saliclyic acid) and above 15(mandelic acid,not sure). What reagent can be used in a simple laboratory for the above purpose?
01 February 2013 558 6 View
Metal Chlorides undergo hydrolysis in water. So we add acid to prevent that. Now if we add the ligands and if the solubility product is low, we may end up with the precipitate. But do we need to...
09 October 2012 1,066 13 View
According to the literature, (Applied spectrosopy, Volume 47, Number 6, 1993), I should have got an absorption maxima at 240nm.. 1 had taken 1:1 ratio of citric acid and lanthanum chloride but my...
09 October 2012 5,030 1 View
In the presence of excess of dialkyl amine, can I expect an equilibrium between the ammonium chloride (alkylated) and corresponding amine? How do I separate the expected dialkyl amine?
09 October 2012 594 2 View
Ammonium chloride can be alkylated quite easily. But how can we convert them to corresponding amines?
08 September 2012 9,175 1 View
or Hydrophobic chelating ligands
08 September 2012 375 0 View
How to prepare the stock solutions of exact concentrations of metal ions with the following composition XCl3. nH2O? Is it right if I consider the molecular weight of anhydrous salt for all my...
08 September 2012 6,210 13 View
Ln=La,Lu,Y in particular.
07 August 2012 4,008 2 View
How to calculate the RMSD values for a MD simulation using MOE?
07 August 2021 0 0 View
When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.
16 June 2021 0 0 View
effect of double bond on the flexibility of polymers
07 April 2021 0 0 View
I am writing to request some information for making polymer color flakes. I would appreciate the help.
17 March 2021 0 0 View
I'm involved in a study of odor control technologies for municipal wastewater treatment plant. One of the control options involves a chemical 2-stage (acid/alkaline) packed bed scrubber. The...
03 March 2021 3,661 2 View
I am at the beginner level in drug design and drug discovery, and I am interested to learn more about this field. Which books are highly recommended to start from and gives me all essential...
02 March 2021 8,437 2 View
