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Salts of the Weakly Coordinating Anion [Al(OTeF 5 ) 4 ] – containing Reactive Counterions
Author(s) -
Hoffmann Kurt F.,
Wiesner Anja,
Subat Noah,
Steinhauer Simon,
Riedel Sebastian
Publication year - 2018
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201800174
Subject(s) - chemistry , alkali metal , salt (chemistry) , lithium (medication) , protonation , inorganic chemistry , oxidizing agent , counterion , metathesis , reactivity (psychology) , nuclear magnetic resonance spectroscopy , ion , solvent , diglyme , stoichiometry , crystallography , medicinal chemistry , stereochemistry , organic chemistry , polymerization , medicine , alternative medicine , pathology , endocrinology , polymer
Six different salts of the weakly coordinating anion [Al(OTeF 5 ) 4 ] – were synthesized and characterized spectroscopically. The alkali and silver salts M [Al(OTeF 5 ) 4 ] ( M = Ag, Li, Na, K, Rb) were obtained by a protonation reaction involving the Brønsted acid H[Al(OTeF 5 ) 4 ] (solv) . In the case of the lithium and silver salt, crystals of the solvent‐coordinated [Li(thf) 4 ][Al(OTeF 5 ) 4 (thf) 2 ] and [Ag(thf) 6 ][Al(OTeF 5 ) 4 (thf) 2 ] were characterized by low‐temperature X‐ray diffraction, revealing a sixfold coordinated central aluminum atom. By a metathesis reaction, the oxidizing nitrosonium salt [NO][Al(OTeF 5 ) 4 ] was obtained and its reactivity was demonstrated by a reaction with white phosphorus. By low‐temperature NMR spectroscopy the selective formation of [NOP 4 ] + species was confirmed. All of the prepared salts represent useful starting materials for the further introduction of the weakly coordinating anion [Al(OTeF 5 ) 4 ] – into a given system.