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The [{(C6H6)Ru}2W8O30(OH)2]6−hybrid (organometallic-POM) anion was used as a pH-tunable building block to create special conditions for realizing π-π interactions in the crystal structure. Changing the pH of an aqueous solution of Na6[{(C6H6)Ru}2W8O28(OH)2]·16H2O (1) results in isolation of a series of new compounds with different Na+/H+ratios in the cationic composition: Na5.5H0.5[{(C6H6)Ru}2W8O28(OH)2]·15H2O (2), Na5H[{(C6H6)Ru}2W8O28(OH)2]·22H2O (3), Na4H2[{(C6H6)Ru}2W8O28(OH)2]·24H2O (4), Na3H3[{(C6H6)Ru}2W8O28(OH)2]·23H2O (5), and NaH5[{(C6H6)Ru}2W8O28(OH)2]·9H2O (6). All complexes were characterized by single crystal X-ray diffraction (SCXRD) analysis and ICP-AES. The presence of π-π stacking was detected for moderate-to-highly protonated3-6. The energy of such interactions was calculated to increase in the following order:6(5.0 kJ mol−1) <5(7.6 kJ mol−1) <3(10.0 kJ mol−1).1was studied for its electrochemical behavior in 0.5 M Li2SO4and as a paste electrode component in methanol. Catalytic activity in methanol oxidation was detected.
Original language | English |
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Pages (from-to) | 4125-4135 |
Number of pages | 11 |
Journal | CrystEngComm |
Volume | 23 |
Issue number | 23 |
DOIs | |
State | Published - 21 Jun 2021 |
ID: 84035941