Dear Siesta users, I have a problem on how it is defined the chemical potential of nitrogen if I use NH3. It is correct to estimate it in this way:
Energy(NH3) = u(N) + 3u(H) -Energy(NH3) is the total energy of NH3 -u(H) is the chemcial potential of H, for which I have used H2 to calculate it u(H) = E(H2)/2 -u(N) is the chemical potential of nitrogen. It is expected that if I increase the size of the molecule, the u(N) will be larger? For example if I use pyridinde, the u(N) will be larger than that in NH3? Thanks in advance. Have a nice weekend. Best regards, pablo