Salts of octabismuth(2+) polycations crystallized from Lewis-acidic ionic liquids
Knies M, Ruck M (2021)
Publication Type: Journal article
Publication year: 2021
Journal
Book Volume: 76
Pages Range: 585-589
Journal Issue: 10-12
Abstract
The reaction of Bi and BiCl3 with RbCl or CsCl in the Lewis-acidic ionic liquid (IL) [BMIm]Cl·4AlCl3 at T = 200 °C yielded air-sensitive, shiny black crystals. X-ray diffraction on single crystals revealed the hexagonal structures of two new salts (Bi8)M[AlCl4]3 (M = Rb, Cs), which are isostructural to the high-temperature form of (Bi8)Tl[AlCl4]3. The known (Bi8)2+ polycation is a square antiprism and can be interpreted as an arachno cluster following modified Wade rules. The crystal structure is a complex variant of the hexagonal perovskite structure type ABX 3 with A = (Bi8)2+, B = M + and X = [AlCl4]-. Chiral strands ∞ M [ AlCl 4[ 3 2-∞ 11 M AlCl432-(M = Rb, Cs) run along [001]. The (Bi8)2+ polycations are only weakly coordinated inside a cage of 24 chloride ions and show dynamic rotational disorder at room temperature. Upon slow cooling to 170 K, the reorientation of the clusters was frozen, yet no long-range order was established.
Involved external institutions
Germany (DE)How to cite
APA:
Knies, M., & Ruck, M. (2021). Salts of octabismuth(2+) polycations crystallized from Lewis-acidic ionic liquids. Zeitschrift für Naturforschung - Section B Journal of Chemical Sciences, 76(10-12), 585-589. https://doi.org/10.1515/znb-2021-0042
MLA:
Knies, Maximilian, and Michael Ruck. "Salts of octabismuth(2+) polycations crystallized from Lewis-acidic ionic liquids." Zeitschrift für Naturforschung - Section B Journal of Chemical Sciences 76.10-12 (2021): 585-589.
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