What is meant by coupling constant?
Answers were Sorted based on User's Feedback
Answer / satheesh g
Coupling constant is denoted by J and the unit is Hz. If we
see the doublet in NMR spectrum, we assume that one peak is
in 2.128 ppm and an another peak is in 2.156 ppm.
First convert the ppm into Hz by multiply the ppm into
fieldstrength in MHz. If Our NMR machine is 300 MHz, the
peaks were at 638.4 Hz and 646.8 Hz. So the coupling
constant is the difference between the two values
i.e.,646.8 - 638.4 gives 8.4 Hz.
|Is This Answer Correct ?||14 Yes||0 No|
Answer / yogesh
coupling constant is denoted by J and measured in Hz it is
the difference between the tow distinguishing lines of
|Is This Answer Correct ?||3 Yes||1 No|
Answer / rupashree
distance between peaks in a multiplet i.e difference in frequency between two peaks. denoted by J.measured in Hz.
|Is This Answer Correct ?||2 Yes||0 No|
Answer / chandu.anil kumar
The distance between the two adjacent peaks in a multiplet
is usually constant and is called the coupling constant.
|Is This Answer Correct ?||0 Yes||0 No|
Answer / madhusudhan
Distance between two lines in H'NMR spectroscopy
|Is This Answer Correct ?||0 Yes||2 No|
what is NIR wave length
What is the accepted microbial load in APIs as per USP.........?
what acid present in milk
Is LOD and LOQ values differ for different substrat (eg milk, tissue, egg etc.) for same compound (eg pesticide flumethrin)in same instrument(eg GC)?
what is the formula of sugar? what is protein and its formula and its function?
what happens when aminoacids react with alcohols?
hai friends i have attended recently Barc, JRF Interview on 18th June 2009. but i didn't get the result till now. now how can i proceed for checking the result. tell me friends otherwise e-mail to email@example.com otherwise cal me 09964981442.
What is conjugated system?
Although bucky ball is an allotropic form of carbon but it is included in organic chemistry?
why in uv calibration in Limt of absorbance parameter specific absorbance is calculated only for selected wavelength
What is the temperature
What is the use of N，N-Dimethyl Acrylamide ?