Spectroscopic and redox properties of RhIIIRuII and RuIIRuII complexes derived from 2,2′-bipyridine, pyrazole-3,5-bis(benzimidazole) and 1,2,4-triazole-3,5-dicarboxylic acid as bridging ligands

Polyhedron ◽  
2004 ◽  
Vol 23 (6) ◽  
pp. 913-919 ◽  
Author(s):  
Sujoy Baitalik ◽  
Bula Dutta ◽  
Kamalaksha Nag
Keyword(s):  
Dicarboxylic Acid ◽  
Redox Properties ◽  
Bridging Ligands

Photochromic and Redox Properties of Bisterpyridine Ruthenium Complexes Based on Dimethyldihydropyrene Units as Bridging Ligands

2011 ◽  
Vol 50 (21) ◽  
pp. 10581-10591 ◽  
Author(s):  
Neus Vilà ◽  
Guy Royal ◽  
Frédérique Loiseau ◽  
Alain Deronzier
Keyword(s):  
Ruthenium Complexes ◽  
Redox Properties ◽  
Bridging Ligands

Synthesis, Photophysics, Electrochemistry, and Excited-State Redox Properties of Trinuclear Copper(I) Acetylides with Bis(diphenylphosphino)alkylamines and -arylamines as Bridging Ligands

1997 ◽  
Vol 16 (8) ◽  
pp. 1772-1778 ◽  
Author(s):  
Vivian Wing-Wah Yam ◽  
Wendy Kit-Mai Fung ◽  
Mei-Tak Wong
Keyword(s):  
Excited State ◽  
Redox Properties ◽  
Bridging Ligands

Electrochromic Behaviour of Polynuclear Ruthenium Complexes on Nanocrystalline SnO2

2003 ◽  
Vol 68 (9) ◽  
pp. 1710-1722 ◽  
Author(s):  
Matteo Biancardo ◽  
Peter F. H. Schwab ◽  
Carlo A. Bignozzi
Keyword(s):  
Dicarboxylic Acid ◽  
Isonicotinic Acid ◽  
Potential Range ◽  
Electrochromic Devices ◽  
Bridging Ligands ◽  
Conductive Glass ◽  
Reversible Redox ◽  
Colour Changes ◽  
Glass Electrodes ◽  
Polynuclear Ruthenium Complexes

The trinuclear [{Ru(NH3)4(py-COOH)}(μ-CN){Ru(bpy)2}(μ-CN){Ru(NH3)4(py-COOH)}]6+ (py-COOH = isonicotinic acid, bpy = 2,2'-bipyridine) (1) and dinuclear [{Ru(dcb)2}2L]7- (dcb = 2,2'-bipyridine-4,4'-dicarboxylic acid, H3L = 9-phenyl-2,3,7-trihydroxy-6-fluorone) (2) complexes were prepared and their spectroelectrochemical behaviour characterised in solution and on conductive glass electrodes layered with Sb-doped nanocrystalline SnO2. The systems display a reversible redox response in a narrow potential range (-0.5 to +0.5 V vs SCE) and offer the possibility of controlling colour changes of electrochromic devices through variations of the coordinated and bridging ligands at the metal centres. SnO2(Sb) electrodes loaded with these dyes show switching times of the order of ms.

Crystal structures, topologies and luminescent properties of three Zn(ii)/Cd(ii) coordination networks based on naphthalene-2,6-dicarboxylic acid and different bis(imidazole) linkers

RSC Advances ◽  
2015 ◽  
Vol 5 (21) ◽  
pp. 16190-16198 ◽  
Author(s):  
Zhi-Hao Yan ◽  
Wen Wang ◽  
Liangliang Zhang ◽  
Xiaowei Zhang ◽  
Lei Wang ◽  
...  
Keyword(s):  
Metal Ions ◽  
Dicarboxylic Acid ◽  
Crystal Structures ◽  
Coordination Polymers ◽  
Structural Diversity ◽  
Luminescent Properties ◽  
Coordination Networks ◽  
Bridging Ligands

Three new coordination polymers (CPs) based on H2ndc acid have been synthesized and structurally characterized. Three CPs exhibit structural diversity depending on different bis(imidazole) bridging ligands and center metal ions.

Redox Properties and Catalytic Ability toward Electrochemical Proton Reduction of Sulfur-Bridged Trinuclear Mo3S4 Complexes Containing Acetate, Trifluoroacetate, and/or Dithiophosphate as Bridging Ligands

2015 ◽  
Vol 88 (4) ◽  
pp. 565-571
Author(s):  
Keisuke Kawamoto ◽  
Akio Ichimura ◽  
Hideki Hashimoto ◽  
Isamu Kinoshita ◽  
Masakazu Hirotsu ◽  
...  
Keyword(s):  
Redox Properties ◽  
Proton Reduction ◽  
Bridging Ligands

Synthesis and redox properties of a phosphine-subsituted para-dioxolene and its bimetallic palladium complex

2008 ◽  
Vol 86 (10) ◽  
pp. 976-981 ◽  
Author(s):  
Sharon L Caldwell ◽  
Joe B Gilroy ◽  
Rajsapan Jain ◽  
Evan Crawford ◽  
Brian O Patrick ◽  
...  
Keyword(s):  
Palladium Complex ◽  
Electronic Spectroscopy ◽  
Chemical Oxidation ◽  
Redox Properties ◽  
Redox Activity ◽  
Redox Potentials ◽  
Cationic Complex ◽  
Bridging Ligands ◽  
Reduction Potentials ◽  
Bimetallic Palladium

Oxidation of 2,5-bis(diphenylphosphino)-1,4-hydroquinone (8) with iodobenzene diacetate produces the corresponding bis(phosphine) substituted benzoquinone (9), the first phosphine-substitued quinone. Cyclic voltammetry studies reveal that the redox functionality of the quinone unit in 9 is retained, and the reduction potentials render this compound slightly more easily reduced than the parent p-benzoquinone. Reaction of the precursor hydroquinone 8 with Pd(hfac)2 affords a binuclear complex 10 with the hydroquinonate ligand bridging two Pd(hfac) substrates. The redox activity of the bridging dioxolene ligand is retained in complex 10, although there are significant changes in the redox potentials relative to those of the free quinone 9. Chemical oxidation of 10 with AgPF6 yields a persistent cationic complex 11, which, based on EPR and electronic spectroscopy, can be formulated as containing a bridging semiquinone ligand.Key words: p-quinones, phosphines, bridging ligands, redox properties.

DFT modeling of Spectral and Redox Properties of Di-and Tetranuclear Ruthenium Transition Metal Complexes with Bridging Ligands

2009 ◽  
Author(s):  
S. Záliš ◽  
R. S. Winter ◽  
M. Linseis ◽  
A. Kaim ◽  
B. Sarkar ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Redox Properties ◽  
Bridging Ligands ◽  
Dft Modeling

scholarly journals Neutral and Cationic Chelidonate Coordination Polymers with N,N’-Bridging Ligands

Chemistry ◽  
2021 ◽  
Vol 3 (1) ◽  
pp. 256-268
Author(s):  
Rosa Carballo ◽  
Ana Belén Lago ◽  
Arantxa Pino-Cuevas ◽  
Olaya Gómez-Paz ◽  
Nuria Fernández-Hermida ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Dicarboxylic Acid ◽  
Single Crystals ◽  
Coordination Sphere ◽  
Coordination Polymers ◽  
Crystal Packing ◽  
Water Molecules ◽  
Bridging Ligands ◽  
Bridging Ligand

The biomolecule chelidonic acid (H2chel, 4-oxo-4H-pyran-2,6-dicarboxylic acid) has been used to build new coordination polymers with the bridging N,N’-ligands 4,4′-bipyridine (4,4-bipy) and 1,2-bis(4-pyridyl)ethane (bpe). Four compounds have been obtained as single crystals: 1D cationic coordination polymers [M(4,4-bipy)(OH2)4]2+ with chelidonate anions and water molecules in the second coordination sphere in 1∞[Zn(4,4-bipy)(H2O)4]chel·3H2O (2) and in the two pseudopolymorphic 1∞[Cu(4,4-bipy)(H2O)4]chel·nH2O (n = 3, 4a; n = 6, 4b), and the 2D neutral coordination polymers 2∞[Zn(chel)(4,4-bipy)(H2O)]·2H2O (1) and 2∞[Zn(chel)(bpe)(H2O)]·H2O (3) where the chelidonate anion acts as a bridging ligand. The effects of the hydrogen bonds on the crystal packing were analyzed. The role of the water molecules hosted within the crystals lattices was also studied.

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