Modified Bipyridines: 5,5′-Diamino-2,2′-bipyridine Metal Complexes Assembled into Multidimensional Networks via Hydrogen Bonding and π–π Stacking Interactions

Abstract

A new synthetic route for the synthesis of 5,5Ј-diamino-2,2-NMR including 113 Cd-NMR, IR, and for the iron complex 57 Fe-Mößbauer spectroscopy. The structure of eight of the bipyridine (5) based on the coupling of 2-chloro-5aminopyridine in the presence of NiCl 2 × 6 H 2 O/PPh 3 /Zn in compounds was elucidated by X-ray crystallography. All of these metal complexes show a bipyridine-metal dimethylformamide is described. The reactions of the potentially ambidentate ligand 5 with salts of the transition coordination. The amino functionality was never involved in metal coordination. The intermolecular arrangement is metals Mn, Fe, Ni, Cu, Zn, Ag, and Cd gave a variety of 13 metal-ligand complexes depending on the anion, the dictated by hydrogen bonding from the amino functionality and by π-π stacking of the bipyridine rings. crystallization conditions and the metal-to-ligand ratio. The complexes obtained were characterized by thermal analyses,

Electrochemical preparation of conductive films of tetrapyridylporphyrins coordinated to four [Ru(5-NO2-phen)2Cl]+ groups

“…A kind of used methodology to modify electrodic surfaces is by electropolymerization. Some electropolymerizable functional groups in the structure of polypyridyl and macrocyclic complexes are: 5-NH 2 -phen (phen: phenanthroline) [26], 5,6-NH 2 -phen [27] and 5,5 0 -NH 2 -bpy [28]. Also, conducting films of tetraruthenated porphyrins have been prepared containing peripheral RuCl 3 (dppb) moieties (dppb = 1,4-bis(diphenylphosphino)butane) [29].…”

Synthesis, characterization and crystal structure determination of Mn (II) ion based 1D polymer constructed from 2, 2′ bipyridyl and azide group, its thermal stability, magnetic properties and Hirshfeld surface analysis

“…Most of the time, these metalazido systems can acquire low dimensionalities with limited properties [8,9]. To solve this problem and for constructing high-dimensional networks, derivatives of metal-azido systems are of particular interest because of versatility and variable topological arrangements [10] resulting in the enhancement of bulk magnetic properties, as well as their magneto-structural correlations. Presently, most common strategy employed for the synthesis of high-dimensional metal-azido systems is the further extension of metal-azido assemblies.…”

Recognition-Directed Supramolecular Assemblies of Metal Complexes of Terpyridine Derived Ligands with Self-Complementary Hydrogen Bonding Sites

“…[6±8] The use of complementary hydrogen-bonding units provides a further tool for crystal engineering of interest to materials science and molecular electronics. [2,6,9] By adequate positioning of hydrogen-bond donor (D) and acceptor (A) sites a large number of complementary systems with singly and multiply bonded systems has been developed.…”

“…Whereas in 4 a two PF6 À anions fit quite well in the opposite corners of each mesh within the grid, the BF 4 À anions in 4 b are smaller and form additional (N)-H-F-(B) H-bonds with the unsaturated amino groups, thus partially breaking up the grid. Though the hydrogen bonds dominate the solid-state structure, they are only weak forces and might be overwhelmed by crystal packing effects caused by different anions.…”

“…Tatsächlich zeigen die Festkörperstrukturen über Wasserstoffbrücken ausgedehnte Netzwerke. Der Co-Komplex 4 a mit PF6 …”