Cation Protonation Degree Influence on the Formation of Anion⋅⋅⋅Anion and Other Non‐Valent Interactions in Guaninium Perrhenates and Pertechnetate

Abstract

Abstract H 2 Gua(ReO 4 ) 2 , HGuaReO 4 and HGuaTcO 4 were first obtained and structurally characterized. Two types of anionic interactions were found in the structure with the twice protonated cation. One type of the rare double‐lock interaction of perrhenate anions was found in the case of the singly protonated guanine salt. Singly charged cations are linked by hydrogen bonds into layer. π‐Stacking interactions between these layers form 3‐dimensional frame. Multiple and relatively abundant anion‐π interactions are formed in H 2 Gua(ReO 4 ) 2 as compared to HGuaReO 4 and HGuaTcO 4 . Different types of crystal packing are formed in the compounds under research. Hirshfeld surface analysis has given evidence that the main contribution to intermolecular interactions for the cations is made by hydrogen bonds of the O⋅⋅⋅H/H⋅⋅⋅O type in all structures, O⋅⋅⋅C/C⋅⋅⋅O and O⋅⋅⋅N/N⋅⋅⋅O interactions in H 2 Gua(ReO 4 ) 2 , N⋅⋅⋅H/H⋅⋅⋅N and H⋅⋅⋅H interactions in HGuaReO 4 and HGuaTcO 4 .