0000000001309220
AUTHOR
Berthold Kersting
Anorganische Chemie 2002
In der anorganischen Molekulchemie sind Mehrfachbindungssysteme, Kationen und „stabile” Radikale wieder starker ins Rampenlicht geruckt. Aktivierung kleiner Molekule und Sensorik mit Metallkomplexen sind zwei Forschungsschwerpunkte der Koordinationschemie. Die Suche nach biomimetischen Modellverbindungen geht weiter; Taktgeber des Fortschritts in der Bioanorganischen Chemie ist weiterhin die Proteinkristallographie.
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…
Azide Binding Controlled by Steric Interactions in Second Sphere. Synthesis, Crystal Structure, and Magnetic Properties of [Ni II 2 (L)(μ 1,1 -N 3 )][ClO 4 ] (L = Macrocyclic N 6 S 2 Ligand)
International audience; The dinuclear Ni-II complex [Ni-2(L-2)][ClO4](2) (3) supported by the 28-membered hexaaza-dithiophenolate macro-cycle (L-2)(2-) binds the N-3(-) ion specifically end-on yielding [Ni-2(L-2)(mu(1,1)-N-3)] [ClO4] (7) or [Ni-2(L-2)(mu(1,1)-N-3)][BPh4] (8), while the previously reported complex [Ni2L1(mu(1,3)-N-3)][ClO4] (2) of the 24-membered macrocycle (L-1)(2-) coordinates it in the end-to-end fashion. A comparison of the X-ray structures of 2, 3, and 7 reveals the form-selective binding of complex 3 to be a consequence of its preorganized, channel-like binding pocket, which accommodates the azide anion via repulsive CH center dot center dot center dot pi interactions …
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
CCDC 966355: 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
CCDC 966357: 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
CCDC 915779: 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
CCDC 966356: 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
CCDC 1437970: Experimental Crystal Structure Determination
Related Article: Alexander Jeremies, Sina Gruschinski, Michel Meyer, Vitaly Matulis, Oleg A. Ivashkevich, Karolin Kobalz, and Berthold Kersting|2016|Inorg.Chem.|55|1843|doi:10.1021/acs.inorgchem.5b02743
CCDC 915780: 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