Here, we present a free web-accessible application, developed in the JAVA programming language for the calculation of vicinal coupling constant ( 3 J H,H ) of organic molecules with the H–C sp3 –C sp3 –H fragment. This JAVA applet is oriented to assist chemists in structural and conform...
The basic idea is that the hyperfine interaction to the electronic spin splits the NMR resonance into 2S+1 lines which, in the presence of electronic relaxation with a rate much greater than the hyperfine coupling constant (fast relaxation), are averaged to a singlet. However, because the ...