Citation: Lago, Ana Bel\'en; Pino-Cuevas, Arantxa; Carballo, Rosa; V\'azquez-L\'opez, Ezequiel M. (2021). Effect of N-salicylidene hydrazide protonation on the solid state structural diversity of its Cu(ii), Ni(ii) and Zn(ii) complexes. CrystEngComm, 23, pp. 153-162.