Structures and Photoluminescence of Coinage Metal(I) Phenylpyrazolato Trinuclear Complexes [M(3,5-Et2-4-Ph-pz)]3 and Arene Sandwich Complexes {[Ag(3,5-Et2-4-Ph-pz)]3}2(Ar) (Ar = Mesitylene and Toluene)

2020 ◽  
Vol 49 (6) ◽  
pp. 670-673 ◽  
Author(s):  
Kiyoshi Fujisawa ◽  
Mai Saotome ◽  
Soran Takeda ◽  
David James Young
Keyword(s):  
Sandwich Complexes ◽  
Coinage Metal ◽  
Trinuclear Complexes

Isolation and Studies of Thioether-functionalized Pyrazole Derived Cu(I)-based Cyclic Trinuclear Complex and Its Coordination Polymers with [Cu2I2] and [BiBr3] Nodes

2021 ◽  
Author(s):  
Zhi-Qing Lin ◽  
Sai-Li Zheng ◽  
Jie-Ying Hu ◽  
Hua-Qun Zhou ◽  
Zihao Feng ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Molecular Level ◽  
Trinuclear Complex ◽  
Coinage Metal ◽  
Trinuclear Complexes

Cu(I)-based cyclic trinuclear complexes (CTCs) represent one of the most intensively investigated candidates in coinage metal-derived CTCs because of their rich photoluminescent properties. Beyond molecular level, coordination polymers built upon...

scholarly journals Bi- and trinuclear coinage metal complexes of a PNNP ligand featuring metallophilic interactions and an unusual charge separation

2021 ◽  
Vol 50 (38) ◽  
pp. 13412-13420
Author(s):  
Milena Dahlen ◽  
Max Kehry ◽  
Sergei Lebedkin ◽  
Manfred M. Kappes ◽  
Wim Klopper ◽  
...  
Keyword(s):  
Metal Complexes ◽  
Charge Separation ◽  
Theoretical Studies ◽  
Coinage Metal ◽  
Trinuclear Complexes ◽  
Uv Excitation ◽  
Metallophilic Interactions

Homometallic bi- and trinuclear complexes of Cu, Ag and Au ligated by a tetradentate PNNP ligand are shown. Photoluminescence and theoretical studies revealed a MLCT character upon UV excitation and complemented this work.

Bis(monoazacrown ethers) with an electron-donating substituent at the hinge: A pronounced participation of hydroxyl group in formation of sodium ion sandwich complexes

1989 ◽  
Vol 54 (4) ◽  
pp. 1043-1054 ◽  
Author(s):  
Jiří Závada ◽  
Juraj Koudelka ◽  
Petr Holý ◽  
Martin Bělohradský ◽  
Ivan Stibor
Keyword(s):  
Complex Formation ◽  
Sandwich Structure ◽  
Sodium Ion ◽  
Hydroxyl Group ◽  
Complex Stability ◽  
Sandwich Complexes ◽  
Sandwich Complex ◽  
Marked Enhancement ◽  
Stability Data ◽  
Potentiometric Data

Sodium ion complex formation has been investigated potentiometrically in four homologous bis(crown) series I-IV differing by the nature of substituent placed at the linking trimethylene chain (X = OH, OCH3, OCH2C6H5 and H respectively). A marked enhancement of the complex stability has been observed in the bis(crown) series I and attributed to participation of the lateral hydroxyl group in the sandwich complex formation. Evidence in support of the sandwich structure has been provided (i) by analysis of the potentiometric data indicating a 1:1 complex stoichiometry and (ii) by a comparison of the complex stability data from the bis(crown) series I with the corresponding values from related monocyclic ligand series V, VI and VII revealing a pronounced cooperation of both macrorings in the sodium ion-bis(crown) I complex formation.

Structural diversity of the complexes of monovalent metal d10 ions with macrocyclic aggregates of iso-tellurazole N-oxides

2019 ◽  
Vol 43 (32) ◽  
pp. 12601-12608 ◽  
Author(s):  
Jin Wang ◽  
Peter C. Ho ◽  
James F. Britten ◽  
Valerie Tomassetti ◽  
Ignacio Vargas-Baca
Keyword(s):  
Structural Diversity ◽  
Coinage Metal ◽  
Monovalent Metal

Iso-tellurazole N-oxides yield a remarkable variety of structures with coinage-metal monocations.

Mechanistische Untersuchungen zum reversiblen Gleichgewicht von metallorganischen Tripeldecker- und Sandwichkomplexen des Typs [Bis{(η5-CpR)Co}-μ-{η4:η4-aren}] und [(η5-CpR)Co(η6-aren)] / Mechanistic Studies towards the Reversible Equilibrium between Metal Organic Triple Decker and Sandwich Complexes [Bis{(η5 -CpR)Co}-μ-{η4 :η4-arene}] and [{(η5-CpR)Co(η6-arene)]

1998 ◽  
Vol 53 (11) ◽  
pp. 1267-1272 ◽  
Author(s):  
Jörg J. Schneider ◽  
Dirk Wolf
Keyword(s):  
Ligand Exchange ◽  
Sandwich Complexes ◽  
Valuable Metal ◽  
H Nmr ◽  
Synthetic Utility ◽  
Metal Organic ◽  
Arene Ligand ◽  
Benzene Toluene

The arene ligand exchange mechanism of slipped arene triple deckers [Bis{(η5-CpR)Co}-μ-{η4:η4-arene}] (R = Me5, 1,2,4 tri-tert butyl, arene = benzene, toluene) 1 was studied by 1H-NMR spectroscopy for different concentrations and solvents. It has been found that triple deckers of type 1 decompose slowly in solution. A unique equilibrium, between these triple deckers and the mixed sandwich complexes [(η6-arene)Co(η5-CpR)] and 14 e [(η5-Cp)Co]solv fragments generated in situ by decomposition o f 1 exists. In addition to this equilibrium arene lability of the thus formed mixed sandwich complex type has been detected by NMR making slipped triple deckers 1 ideal single source compounds for the generation of two [(η5-Cp)Co] fragments in one reaction step. Such fragments are valuable metal ligand components with high synthetic utility in organometallic chemistry.

scholarly journals Heterobimetallic lanthanide‐coinage metal compounds featuring possible metal‐metal interactions in the exited state

2021 ◽  
Author(s):  
Peter Werner Roesky ◽  
Milena Dahlen ◽  
Niklas Reinfandt ◽  
Chengyu Jin ◽  
Michael T. Gamer ◽  
...  
Keyword(s):  
Metal Compounds ◽  
Coinage Metal ◽  
Metal Interactions ◽  
Metal Metal

scholarly journals Actinide tetra-N-heterocyclic carbene ‘sandwiches’

2021 ◽  
Author(s):  
Joseph F. DeJesus ◽  
Ryan W. F. Kerr ◽  
Deborah A. Penchoff ◽  
Xian B. Carroll ◽  
Charles C. Peterson ◽  
...  
Keyword(s):  
The Other ◽  
Sandwich Complexes

Highly-symmetrical, thorium and uranium octakis-carbene ‘sandwich’ complexes have been prepared by ‘sandwiching’ the An(iv) cations between two anionic macrocyclic tetra-NHC ligands, one with sixteen atoms and the other with eighteen atoms.

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