Periodic Table |
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Lewis Acid/Base Interaction Matrix Database
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Type 18 Lewis Acid/Base Complexation Chemistry |
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Cationic π-System Salts | |
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Bonding: | Charge controlled ionic complexes which form solvent separated ions in polar solvents so making the interesting π-cations appear ‘naked’ for spectroscopic study.
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Charge: | Complexes are neutral. |
Chemistry: | Exotic cationic π-systems, such as allyl & pentatrienyl cations: ![]() cyclopropenyl, cyclobutdienyl, tropylium & cyclooctatetrenely cations: ![]() are reactive electrophilic entities that require very non-nucleophilic anionic counter ions, and tetrafluoroborate, [BF4]–, and hexafluorantimonate, [SbF6]–, type ions are ideal. |
Congeneric Series: | Few of interest. |
Type 18 Lewis acid/base complex (generic)![]() |
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N5 hexafluoroarsinate more here |
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Pyrylium tetrafluoroborate more here |