Cu(en)2SiF6 and [Cu(dmen)2(H2O)]SiF6 (en = 1,2-diaminoethane; dmen = N,N-dimethyl-1,2-diaminoethane): Preparations, crystal structures, spectroscopic properties and hydrogen bonding mediated magnetism

► Cu(en)2SiF6 (1) and [Cu(dmen)2(H2O)]SiF6 (2) were prepared and characterized. ► Chain-like and ionic crystal structures are formed by 1 and 2, resp. ► Hydrogen bonds play important role in packing and magnetism in both structures. ► EPR and magnetic data revealed 2D AF magnetic structure in both 1 and 2. ► Rectangular AF magnetic model was suggested for description of 2.