scholarly journals Chiral stimuli-responsive metallo-supramolecular assembly induced by CuII/CuI redox change

2020 ◽  
Vol 56 (61) ◽  
pp. 8703-8706
Author(s):  
Maya Marinova ◽  
Antoine Bonnefont ◽  
Thierry Achard ◽  
Aline Maisse-François ◽  
Stéphane Bellemin-Laponnaz
Keyword(s):  
Metal Complexes ◽  
Supramolecular Assembly ◽  
Coordination Geometry ◽  
Stimuli Responsive ◽  
Redox Change ◽  
Selective Formation

We investigated the selective formation of homoleptic and heteroleptic metal complexes controlled by means of the chiral molecular instruction of the ligand and the coordination geometry of the metal.

Effects of Metal Coordination Geometry on Stabilization of Human Telomeric Quadruplex DNA by Square-Planar and Square-Pyramidal Metal Complexes

2008 ◽  
Vol 47 (24) ◽  
pp. 11910-11919 ◽  
Author(s):  
Anna Arola-Arnal ◽  
Jordi Benet-Buchholz ◽  
Stephen Neidle ◽  
Ramón Vilar
Keyword(s):  
Metal Complexes ◽  
Metal Coordination ◽  
Coordination Geometry ◽  
Quadruplex Dna ◽  
Square Planar

Übergangsmetallkomplexe mit Schwefelliganden, LXXVI Redox- und Additionsreaktionen von Nickelkomplexen mehrzähniger Thioether-Thiolat-Liganden. Röntgenstrukturanalysen von (NMe4)2[Ni(′S2′)2] und [Ni(′S4 – C3′)(PMe3)] / Transition Metal Complexes with Sulfur Ligands, LXXVI Redox and Addition Reactions of Nickel Complexes with Multidentate Thioether-Thiolato Ligands. X-Ray Structure Determinations of (NMe4)2[Ni(′S2′)2] and [Ni(′S4–C3′)(PMe3)]

1991 ◽  
Vol 46 (12) ◽  
pp. 1601-1608 ◽  
Author(s):  
Dieter Sellmann ◽  
Stefan Fünfgelder ◽  
Falk Knoch ◽  
Matthias Moll
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Structure Analysis ◽  
Transition Metal Complexes ◽  
Nickel Complexes ◽  
Addition Reactions ◽  
Coordination Geometry ◽  
X Ray ◽  
Square Planar ◽  
Structure Determinations

In order to elucidate specific properties of nickel sulfur complexes, redox and addition-elimination reactions of [Ni(′OS4')]2, [Ni(′NHS4')]2, [Ni(′S5')], [Ni('S4—C5')], and [Ni('S4—C3')] were investigated ('OS4′ 2' = 2,2'-bis(2-mercaptophenylthio)diethylether(2—), 'NHS4'2- = 2,2'-bis(2-mercaptophenylthio)diethylamine(2—), 'S5'2- = 2,2'-bis(2-mercaptophenylthio)diethylsulfide(2—), 'S4-C5'2- = 1,5-bis(2-mercaptophenylthio)pentane(2—), 'S4—C3'2- = 1,3-bis(2-mercaptophenylthio)propane(2—)).Cyclovoltammetry proves the complexes to be redox inactive between —1.4 and +0.8 V vs. NHE. Above +0.8 V the complexes are irreversibly oxidized, below —1,4 V desalkylation takes place and [Ni(′S,′)2]2- is formed. An X-ray structure analysis was carried out of (NMe4)2[Ni(′S2')2], which shows a planar anion with the Ni center in a nearly perfect square planar coordination. Distances and angles are practically identical to those in the [Ni(′S2')2-] monoanion.The complexes coordinate only phosphines as coligands, but thioether donors simultaneously decoordinate and, dependant of reaction temperature, mono- or trisphosphine complexes are formed. [Ni(′S4—C3')(PMe3)] was characterized by X-ray structure analysis and exhibits a square pyramidal coordination geometry.

An electrochemically controlled supramolecular zip tie based on host–guest chemistry of CB[8]

2020 ◽  
Vol 18 (27) ◽  
pp. 5228-5233
Author(s):  
Iago Neira ◽  
Olaya Domarco ◽  
Jose L. Barriada ◽  
Paola Franchi ◽  
Marco Lucarini ◽  
...  
Keyword(s):  
Radical Cation ◽  
Supramolecular Assembly ◽  
Stimuli Responsive ◽  
Guest Chemistry

A stimuli-responsive supramolecular assembly based on a bipyridinium thread and CB[8] behaves like a zip tie relaxing the chain as a consequence of the insertion of both radical cation moieties within the CB[8] macrocycle.

scholarly journals Supramolecular Assembly of Metal Complexes by (Aryl)I⋅⋅⋅d[Pt II ] Halogen Bonds

2020 ◽  
Vol 26 (34) ◽  
pp. 7692-7701 ◽  
Author(s):  
Eugene A. Katlenok ◽  
Matti Haukka ◽  
Oleg V. Levin ◽  
Antonio Frontera ◽  
Vadim Yu. Kukushkin
Keyword(s):  
Metal Complexes ◽  
Supramolecular Assembly ◽  
Halogen Bonds

Supramolecular Assembly Induced Emission of Thiazole Orange with Sulfobutylether β‐cyclodextrin: A Stimuli‐Responsive Fluorescence Sensor for Tyramine

ChemPhysChem ◽  
2019 ◽  
Vol 20 (19) ◽  
pp. 2498-2505 ◽  
Author(s):  
Raman Khurana ◽  
Nilotpal Barooah ◽  
Achikanath C. Bhasikuttan ◽  
Jyotirmayee Mohanty
Keyword(s):  
Supramolecular Assembly ◽  
Fluorescence Sensor ◽  
Thiazole Orange ◽  
Stimuli Responsive

Synthetic and structural studies on metal complexes of tripyrrin

2003 ◽  
Vol 07 (01) ◽  
pp. 17-24 ◽  
Author(s):  
Martin Bröring ◽  
Carsten D. Brandt ◽  
Serguei Prikhodovski
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Metal Ion ◽  
Coordination Geometry ◽  
Structural Studies ◽  
Structural Investigations ◽  
Coordination Polyhedra ◽  
X Ray ◽  
Step Procedure ◽  
Porphyrin Analogues

A general two-step procedure for the synthesis of metallotripyrrinates TrpyMOAc f with M = Co(II) , Cu(II) , Zn(II) and Pd(II) , and OAc f = trifluoroacetate, is described, starting from well-known monopyrrolic precursors and simple transition metal acetates. X-ray structural investigations were undertaken on four different complexes, and the results reveal, that the nature of the metal ion, rather than the ligand, determines the coordination geometry of these porphyrin fragment complexes. The finding of pseudotetrahedral and strained pseudoplanar coordination polyhedra at the metal centres makes a clear distinction between metalloporphyrins and metallotripyrrins and shows the latter to be related to some recently discovered metal chelates of macrocyclic porphyrin analogues.

Influence of N-heteroaromatic π–π stacking on supramolecular assembly and coordination geometry; effect of a single-atom change in the ligand

2015 ◽  
Vol 44 (12) ◽  
pp. 5488-5502 ◽  
Author(s):  
Hamid Reza Khavasi ◽  
Bahareh Mir Mohammad Sadegh
Keyword(s):  
Coordination Compounds ◽  
Crystal Packing ◽  
Supramolecular Assembly ◽  
Single Atom ◽  
Coordination Geometry ◽  
Geometry Effect ◽  
Π Interactions ◽  
Π Stacking ◽  
Nitrogen Heteroatom ◽  
Aromatic Systems

A study on how the polarization of aromatic systems, through the introduction of a nitrogen heteroatom, affects the π–π interactions and crystal packing of mercury coordination compounds.

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