Hierarchische Selbstorganisation von Helicaten mit substituierten 8-Hydroxychinolinliganden

Aim of this work was the synthesis of complexes with different divalent metals, starting from alkyl 8-hydroxyquinoline-7-carboxylate and 1-alkyl-3-(8-hydroxyquinolin-7-yl)urea and investigations of the monomer-dimer-equilibrium. Hydrophilic and hydrophobic ligands had been done and used successfully for hierarchical self-assembly of dinuclear, triple-stranded, helicate-type complexes, which has been studied intensivly (Build-up and disaggregation, formation of dynamic combinatorial libraries and magnetochemical properties).These results could be revealed:1. Esterification could be done in good yield to build up ligands with different properties.2. Complexation with different divalent transition metals (Zn2+, Ni2+, Co2+ and Mn2+) was successful and lead to dinuclear triple stranded helicate type complexes. The equilibrium was always shifted to the dimer.3. Assembly of a DCC by mixing of two different ligands followed by time depending ESI-MS-investigation succeed.4. Synthesis and complexation of 5-chloro-8-hydroxyquinoline-7-carbaldehyde and 1-(8-hydroxyquinolin-7-yl)ethanone had been done and lead us to the dimeric species [Li3(L)6M2]+[OAc]-.5. Neutral complexes were realised by use of 1-alkyl-3-(8-hydroxyquinolin-7-yl)urea ligands and divalent transition metals. X-ray crystallographic investigations document that the M-M-M distances are less than 3 Å. Antiferromagnetic behaviour can be found for Co(II) and Ni(II) complexes and ferromagnetic behaviour for Mn(II) by magnetochemical investigations.

Grantor dc:publisher

Mainz

Year dc:date

2009

Author dc:creator

• Fiege, Marcel

Contributors dc:contributor

• Albrecht, Markus

• info:eu-repo/classification/ddc/540
• Helicate
• Selbstorganisation
• Chemie
• 8-Hydroxychinolin
• hierarchisch
• dynamisch kombinatorische Bibliothek
• supramolekulare Chemie
• Elektronensprayionisations-Massenspektrometrie
• 8-hydroxyquinoline
• hierarchical
• supramolecular chemistry

Statement dc:rights

• info:eu-repo/semantics/openAccess

Language dc:language

ger

Identifier

https://publications.rwth-aachen.de/search?p=id:%22RWTH-CONV-113864%22

OAI record oai:identifier

https://publications.rwth-aachen.de/oai2d?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai%3Apublications.rwth-aachen.de%3A51585