Ankit kumar Srivastava

12 Questions 5 Answers 0 Followers

Questions related from Ankit kumar Srivastava

I have a ligand system have NNOO donor sites with two cavities, what should be the factor to decide which metal is perfect for that particular cavity?

What are the parameters can control the cavity size? Or it just a hit and trial method.... I have one Schiff base compartmental ligand and other ligand system is porphyrin. I need your valuable...

01 November 2017 786 1 View

How to get precipitate from the reaction mixture, getting viscous liquid everytime after rotavapour?

I am trying to prepare Schiff base using O-vanillin and 1,3 DAP and 2,2 methyl DAP at reflux condition in methanol,in place of the solid yellow ppt according to reaction scheme, I am getting...

27 October 2017 7,039 3 View

Why do unpaired electrons make NMR measurements difficult?

please give the specific answer.

12 December 2016 6,501 6 View

How to increase the size of crystal during recrystallisation process?

my complex is pentanuclear cobalt schiff base that is highly soluble in methanol ,acetonitrile, DCM. i tried a no of times with methanol , acetonirile solvent using slow evaporation technique in...

05 October 2016 2,890 7 View

Does anyone know about the synthetic procedure for 2,6-Diformyl-4-methylthiophenol ?

Dear Sir/Madam, Does anyone know about the synthetic procedure for 2,6-Diformyl-4-methylthiophenol ? I have gone through a no of literature to find the synthetic procedure to prepare this compound...

30 August 2016 5,272 5 View

What is the exact method for synthesis and suitable solvent for metal complex with schiff bases?

i am working with iron , cobalt and maganese mix valent macro cyclic schiff base complexes .

24 August 2016 781 10 View

Is sonication essential in solubility testing of a substance?

at the time of submitting samples for NMR or HRMS, we should confirm the solubility of compounds. Sometimes a compound is soluble in just adding the solvent and sometimes using sonication, it...

12 August 2016 2,108 3 View

How to monitor one pot metal template reaction by TLC ?

in case of organic ligands ,we can monitor the reaction by TLC in a easy way by using different solvent mixture. but in case of metal complex like i m doing work on macro cyclic schiff base 3 d...

10 August 2016 1,970 5 View

How to synthesize metal free macro cyclic Schiff base ligands ?

i have tried to prepare metal free macro cyclic schiff base ligand number of times but i could not get it ,i m getting only polymeric type compound that is not dissolving in any solvent ,give me...

08 August 2016 9,112 3 View

from the molar conductivity value, how to find complex and counter ion ratio?

send me link to get range of molar conductivity which help me to know the ratio of my metal complex and counter ion.

01 August 2016 9,333 4 View

Schiff-base ligands and their complex are usually not stable against silica or aluminium oxide in chromatography .explain the reason ?

The design and synthesis of binuclear and poly nuclear transition metal complexes with macrocyclic Schiff base ligands.i m doing work on this topic

31 July 2016 7,831 3 View

Do you have any tip or tricks for growing the perfect crystal.please share them ?

i m trying to synthesize bi nuclear and poly nuclear transition metal(Cr,Mn,Fe,Co) complexes with macro cyclic Schiff base ligands by metal template method.but i m not getting the single crystal.

26 July 2016 6,074 3 View