Unsymmetrical Dirhenium Complexes That Contain [Re2]6+and [Re2]5+Cores Complexed by Tridentate Ligands with P2O and P2N Donor Sets

2002 ◽  
Vol 41 (2) ◽  
pp. 405-412 ◽  
Author(s):  
Shan-Ming Kuang ◽  
Phillip E. Fanwick ◽  
Richard A. Walton
Keyword(s):  
Tridentate Ligands ◽  
Dirhenium Complexes

scholarly journals Synthesis and Crystal Structure of the Bis(μ-hydroxo)diiron(II) Complex with Tridentate Ligands Having a Sterically Bulky Imidazolyl Group

2019 ◽  
Vol 35 (0) ◽  
pp. 27-29
Author(s):  
Reiko YAGUCHI ◽  
Hideki FURUTACHI ◽  
Sanae SHIROTSUKI ◽  
Xi ZHANG ◽  
Takanao ISHIKAWA ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Tridentate Ligands ◽  
Synthesis And Crystal Structure

scholarly journals Solvent-Induced Hysteresis Loop in Anionic Spin Crossover (SCO) Isomorph Complexes

2021 ◽  
Vol 7 (6) ◽  
pp. 75
Author(s):  
Emmelyne Cuza ◽  
Samia Benmansour ◽  
Nathalie Cosquer ◽  
Françoise Conan ◽  
Carlos J. Gómez-García ◽  
...  
Keyword(s):  
Metal Ion ◽  
Spin Crossover ◽  
Magnetic Behaviour ◽  
Magnetic Studies ◽  
Tridentate Ligands ◽  
Tripodal Ligand ◽  
Single Crystal Structures ◽  
One Step ◽  
Lower Temperature ◽  
Step Transition

Reaction of Fe(II) with the tris-(pyridin-2-yl)ethoxymethane (py3C-OEt) tripodal ligand in the presence of the pseudohalide ancillary NCSe- (E = S, Se, BH3) ligand leads to the mononuclear complex [Fe(py3C-OEt)2][Fe(py3C-OEt)(NCSe)3]2·2CH3CN (3), which has been characterised as an isomorph of the two previously reported complexes, Fe(py3C-OEt)2][Fe(py3C-OEt)(NCE)3]2·2CH3CN, with E = S (1), BH3 (2). X-ray powder diffraction of the three complexes (1–3), associated with the previously reported single crystal structures of 1–2, revealed a monomeric isomorph structure for 3, formed by the spin crossover (SCO) anionic [Fe(py3C-OEt)(NCSe)3]− complex, associated with the low spin (LS) [Fe(py3C-OEt)2]2+ cationic complex and two solvent acetonitrile molecules. In the [Fe(py3C-OEt)2]2+ complex, the metal ion environment involves two py3C-OEt tridentate ligands, while the [Fe(py3C-OEt)(NCSe)3]− anion displays a hexacoordinated environment involving three N-donor atoms of one py3C-OEt ligand and three nitrogen atoms arising from the three (NCSe)− coligands. The magnetic studies for 3 performed in the temperature range 300-5-400 K, indicated the presence of a two-step SCO transition centred around 170 and 298 K, while when the sample was heated at 400 K until its complete desolvation, the magnetic behaviour of the high temperature transition (T1/2 = 298 K) shifted to a lower temperature until the two-step behaviour merged with a gradual one-step transition at ca. 216 K.

Quantum Yields over 80% Achieved in Luminescent Europium Complexes by Employing Diphenylphosphoryl Tridentate Ligands

2018 ◽  
Vol 57 (13) ◽  
pp. 7512-7515 ◽  
Author(s):  
Chen Wei ◽  
Boxun Sun ◽  
Zelun Cai ◽  
Zifeng Zhao ◽  
Yu Tan ◽  
...  
Keyword(s):  
Quantum Yields ◽  
Europium Complexes ◽  
Tridentate Ligands

New azole antifungal agents with novel modes of action: Synthesis and biological studies of new tridentate ligands based on pyrazole and triazole

2011 ◽  
Vol 46 (9) ◽  
pp. 4117-4124 ◽  
Author(s):  
Hasnae Bendaha ◽  
Lisa Yu ◽  
Rachid Touzani ◽  
Rachid Souane ◽  
Guri Giaever ◽  
...  
Keyword(s):  
Antifungal Agents ◽  
Tridentate Ligands ◽  
Modes Of Action ◽  
Biological Studies

New chiral tridentate ligands for asymmetric catalysis

2006 ◽  
Vol 78 (2) ◽  
pp. 311-320 ◽  
Author(s):  
Kevin Murtagh ◽  
Brian A. Sweetman ◽  
Patrick J. Guiry
Keyword(s):  
Asymmetric Catalysis ◽  
High Performance ◽  
Aromatic Aldehydes ◽  
Asymmetric Induction ◽  
Tridentate Ligand ◽  
Coupling Reactions ◽  
Tridentate Ligands ◽  
Molecular Complexation ◽  
Cross Coupling Reactions ◽  
Moderate Yield

The synthesis of new tridentate, isoquinoline-derived ligands, involving successive Suzuki cross-coupling reactions, is described. We were able to resolve 1-[3-(2-hydroxy-phenyl)-isoquinolin-1-yl]-naphthalen-2-ol via molecular complexation with N-benzylcinchonidinium chloride, whereas 1,3-bis(2-hydroxy-naphthalen-1-yl)-isoquinoline was resolved by chromatographic separation of its epimeric camphorsulfonates. Their barrier to rotation about the central biaryl axis was evaluated via racemization studies. Application of enantiopure 1,3-bis(2-hydroxynaphthalen-1-yl)-isoquinoline in the addition of diethylzinc to aldehydes proceeded in moderate yield but without asymmetric induction. A new tridentate ligand, 4-tert-butyl-2-chloro-6-[1-(2-hydroxymethyl-naphthalen-1-yl)-isoquinolin-3-yl]-phenol, was prepared in good yield and resolved by semipreparative high-performance liquid chromatography (HPLC). Its application in the addition of diethylzinc to a range of aromatic aldehydes proceeded in near perfect enantioselectivities at low ligand loadings of 1 mol %.

Second Order Optical Nonlinearities of Copper(II) and Palladium(II) Complexes withN-Salicylidene-N′-aroylhydrazine Tridentate Ligands

2004 ◽  
Vol 2004 (12) ◽  
pp. 2467-2476 ◽  
Author(s):  
Fabio Borbone ◽  
Ugo Caruso ◽  
Roberto Centore ◽  
Antonella De Maria ◽  
Alain Fort ◽  
...  
Keyword(s):  
Second Order ◽  
Optical Nonlinearities ◽  
Tridentate Ligands

Palladacycles having normal and spiro chelate rings designed from bi- and tridentate ligands with an indole core: structure, synthesis and applications as catalysts

2017 ◽  
Vol 41 (19) ◽  
pp. 11342-11352 ◽  
Author(s):  
Mahabir P. Singh ◽  
Fariha Saleem ◽  
Ram S. Pal ◽  
Ajai K. Singh
Keyword(s):  
Core Structure ◽  
Tridentate Ligands ◽  
Structure Synthesis ◽  
Chelate Rings

Palladacycles with normal and spiro rings catalyze Suzuki–Miyaura coupling of ArBr/ArCl/allylation of aldehydes at 0.001/1 mol% loading.

ChemInform Abstract: μ-ALLENYLIDENEDIMANGANESE AND -DIRHENIUM COMPLEXES

1985 ◽  
Vol 16 (22) ◽  
Author(s):  
H. BERKE ◽  
P. HAERTER ◽  
G. HUTTNER ◽  
L. ZSOLNAI
Keyword(s):  
Dirhenium Complexes
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