0000000001235092
AUTHOR
Frederik Schleife
Cavitands incorporating a Lewis acid dinickel chelate function as receptors for halide anions.
The halide binding properties of the cavitand [Ni2(L(Me2H4))](2+) (4) are reported. Cavitand 4 exhibits a chelating N3Ni(μ-S)2NiN3 moiety with two square-pyramidal Ni(II)N3S2 units situated in an anion binding pocket of ∼4 Å diameter formed by the organic backbone of the (L(Me2H4))(2-) macrocycle. The receptor reacts with fluoride, chloride (in MeCN/MeOH), and bromide (in MeCN) ions to afford an isostructural series of halogenido-bridged complexes [Ni2(L(Me2H4))(μ-Hal)](+) (Hal = F(-) (5), Cl(-) (6), and Br(-) (7)) featuring a N3Ni(μ-S)2(μ-Hal)NiN3 core structure. No reaction occurs with iodide or other polyatomic anions (ClO4(-), NO3(-), HCO3(-), H2PO4(-), HSO4(-), SO4(2-)). The binding ev…
CCDC 917925: Experimental Crystal Structure Determination
Related Article: Alexander Jeremies, Ulrike Lehmann, Sina Gruschinski, Frederik Schleife, Michel Meyer, Vitaly Matulis, Oleg A. Ivashkevich, Marcel Handke, Karolin Stein, Berthold Kersting|2015|Inorg.Chem.|54|3937|doi:10.1021/acs.inorgchem.5b00123
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CCDC 915779: Experimental Crystal Structure Determination
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