How this moiety can react with hypochlorite (ClO-)?

Hi, I have a question about the reaction between julolidine moiety and hypochlorite (ClO-). Please see below the scheme. The color change is very interesting. It changes from yellow to purple...

01 February 2020 6,407 1 View

What is the mechanism of peroxyacid synthesis?

http://www.orgsyn.org/demo.aspx?prep=cv6p0276 Hi, I synthesized peroxyacid according to above link. Also I checked that it was successfully synthesized. However, I've wondered why those reagents...

10 November 2018 4,867 0 View

How to interpret blue shifted emission and red shift UV-vis?

Hi, I want to interpret the mechanism of blue shift emission. I carried out some experiments about metal detection. The ligand showed green fluorescence and if the metal bound to the ligand,...

10 November 2018 7,822 4 View

How much is allowable range in ESI-MS analysis?

Hi, I'm wondering how broad the allowable range in mass spectrum and reason. (the gap between calculated exact mass and experimental data) I've known that the error range is 1 because of one...

07 August 2018 3,138 3 View

How can I calculate association constant in fluorescence by substitution of fluorescence intensity?

Hi, I want to calculate association constant through following method Talanta Volume 41, Issue 4, April 1994, Pages 599-609 However, I don't understand why I-I0 could be used. Could anyone...

06 July 2018 3,195 0 View

What is 'washing' meaning in organic synthesis?

Hi, I want to synthesis some compound and found references of them. However, I don't know what 'washing with NaHCO3 solution' means. (Please look at the picture) What is different from...

04 May 2018 8,784 9 View

Can solvent affect to coordination number?

Hi, I should prepare cobalt complex experiment using MIMT (2-mercapto-1-methylimidazole). In this experiment, the coordination numbers were changed depending on what solvent we use. In case of...

04 May 2018 8,520 2 View

How can I separate organic layer with miscible solvent?

Hi, When I read this paper, I wonder how to separate organic layer with miscible solvent. (Bull. Chem. Soc. Jpn., 53, 1181-1182 (1980)) The ethylene glycol is miscible with HBr or sth. So it is...

03 April 2018 3,318 0 View

Why does nitro group(-NO2) have poor solubility in polar solvents?

Hi, I want to know why nitro group and also sulfonate group have poor solubility in water and other polar solvents(DMSO, DMF, MeOH, etc.). Actually I thought the reason is polarity but it...

03 April 2018 9,719 1 View

How can I increase the yield of this compound?

Hi guys, I want to synthesize the compound in the below picture. (Ref from Chem. Commun., 2017,53, 3189-3192 ) Its synthetic procedure seems gabriel synthesis using...

02 March 2018 2,090 3 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

Irradiation data for JAPAN?

Hi, Could you help me to get the latest (2019, 2020) solar resource data for a particular site in JAPAN? PV GIS and NSRDB data are not in reach to JAPAN, I'm looking for some other database for...

03 March 2021 961 3 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 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

Is there a powerful system for the security of the systems distributed on IoT systems?

Is there a powerful system for the security of the systems distributed on IoT systems?

02 March 2021 3,858 10 View