What is the relationship between pKa value and nature oWhat is the range for pKa? What is the conclusion when pka value is negative and above 14?

What is the relationship between pKa value and nature oWhat is the range for pKa? What is the conclusion when pka value is negative and above 14? Some drugs pka is negative and for some molecules...

11 December 2018 9,027 0 View

When phenolic group shows chemical shift delta value near to 15 in proton NMR spectrum?

Phenolic group shows chemical shift delta value below or upto 10 in PMR spectrum due to intermolecular hydrogen bonding in specific solvents but it shifts sometimes upto 15. What can be the...

31 December 2017 7,108 5 View

Why carbon tetrachloride and carbon disulphide gives the vibrational bands in the mid IR spectrum although their dipole moments are zero?

CCl4 and CS2 are having dipole moment zero or no dipole. But both are having characteristic vibrational bands in the mid IR range. What can be the reason/s for that?

31 December 2017 4,735 2 View

How the components having 1 min retention time can be retained in BEH column with mobile phase containing 90% acetonitrile?

07 August 2016 6,873 3 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

fatal error

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

fatal error

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

fatal error

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

fatal error

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

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View

I am interested in medicinal chemistry field, which books are highly recommended to learn from?

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