Vasantha Gowda

10 Questions 15 Answers 0 Followers

Questions related from Vasantha Gowda

What could be a reason for the anomalous behavior of T2 relaxation at different temperatures?

T2 relaxation of protons are reproducible but fluctuating at different temperatures.

11 November 2013 2,883 2 View

Can we deprotonate hydroxyl group of mandelic or salicylic acid?

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?

02 February 2013 607 6 View

Measuring the concentration of lanthanide ion in aqua solution using citrate as the complexing agent

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...

10 October 2012 5,074 1 View

How to decide the suitable pH for a coordination complex preparation (in general)?

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...

10 October 2012 1,117 13 View

How can I convert dialkyl ammonium chloride to dialkyl amine efficiently?

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?

10 October 2012 660 2 View

Preparation of Standard solutions of metal ions

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...

09 September 2012 6,255 13 View

Can anybody suggest a few examples for non-halogenated, hydrphobic and highly coordinating anions?

or Hydrophobic chelating ligands

09 September 2012 421 0 View

How to prepare 15N enriched amines?

15N enriched secondary amines from enriched ammonium chloride

09 September 2012 6,738 0 View

How to convert secondary ammonium chloride to secondary amine?

Ammonium chloride can be alkylated quite easily. But how can we convert them to corresponding amines?

09 September 2012 9,223 1 View

How to prepare anhydrous salt of LnCl3. xH2O?

Ln=La,Lu,Y in particular.

08 August 2012 4,060 2 View