| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Repo, Timo
University of Helsinki
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2024Mesoporous silica-amine beads from blast furnace slag for CO<sub>2</sub> capture applicationscitations
- 2023Functionalization of nitrogen-doped graphene quantum dotcitations
- 2022Parahydrogen-induced polarization study of imine hydrogenations mediated by a metal-free catalystcitations
- 2017Nuclear spin hyperpolarization with ansa-aminoboranes : a metal-free perspective for parahydrogen-induced polarizationcitations
- 2016Nuclear spin hyperpolarization with ansa-aminoboranescitations
- 2016Towards improved solubility of poorly water-soluble drugscitations
- 2014Tweezers for Parahydrogencitations
- 2011Two- and three-dimensional packing diagrams of M(salophen) complexescitations
- 2006Synthesis of titanium complexes bearing two mono anionic malonic acid ester based ligands and their use as catalyst precursors in ethene polymerizationcitations
- 2006High-molar-mass polypropene with tunable elastic properties by hafnocene/borate catalystscitations
- 2004Tetrakis Sn(IV) alkoxides as novel initiators for living ring-opening polymerization of lactidescitations
- 2002New bis(imino)pyridine-iron(II)- and cobalt(II)-based catalysts: synthesis characterization and activity towards polymerization of ethylenecitations
- 2002Copolymerization of propene with phenylnorbornene using ansa-bridged metallocene catalystscitations
- 2001Copolymerization of carbon monoxide with exo-methylenecycloalkane and dienes: synthesis of functionalized aliphatic polyketonescitations
- 2000Synthesis and crystal structure of [1-(eta(5)-9-fluorenyl)-2-(eta(5)-1-indenyl)ethane]-hafnium dimethyl
Places of action
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article
Two- and three-dimensional packing diagrams of M(salophen) complexes
Abstract
For better understanding of two- (2D) and three-dimensional (3D) crystal engineering of metal complexes, the 2D and 3D packing diagrams of metal salophen (=N,N'-o-phenylene-bis (salicylideneimine)) complexes are compared in detail. According to the 3D structures, determined by X-ray crystallography, N,N'-(o-phenylene)bis(4-hexyloxysalicylideneiminato)Cu(II) (1) and N,N'-(o-phenylene)bis(4-decyloxysalicylidene-iminato)Ni(II) (2) have a square-planar coordination geometry. 1 forms a host-guest complex with CH2Cl2 solvent molecule via intermolecular hydrogen bonds. In 2 the interdigitating alkyl chains allow the molecules to be packed in parallel sheets with a zigzag-type pattern while in 1 the molecules are packed in coplanar layers. In both structures the layers are connected by short {M}center dot center dot center dot H contacts (3.07 angstrom in 1, 3.15 angstrom in 2). The molecular packings in planes of the 3D structures are compared with previously determined 2D surface patterns of five equivalent Cu(II), Ni(II) and Co(II) complexes formed at the liquid-solid interface. The structures were studied at the interface by means of scanning tunneling microscopy. It is shown that in the case of 2 the 2D structures observed in the plane of a bulk crystal and at the liquid-solid interface are not comparable. As shown, even the metal ion and the alkyl chain length affect differently on the 2D and 3D packing. The role of molecular planarity on the packing diagrams is addressed by comparing the nearly planar single crystal structures of salophen complexes 1 and 2 to the structure of N,N'-ethylene-bis(4-octyloxysalicylideneiminato)Cu(II) which has a twisted salen moiety.