Distinguishing the Strength of Electronic Coupling for Mo2-Containing Mixed-Valence Compounds within the Class III Regime

2014 ◽  
Vol 21 (6) ◽  
pp. 2353-2357 ◽  
Author(s):  
Tao Cheng ◽  
Ying Ning Tan ◽  
Yu Zhang ◽  
Yu Yu Zhang ◽  
Miao Meng ◽  
...  
Keyword(s):  
Mixed Valence ◽  
Electronic Coupling ◽  
Class Iii ◽  
Mixed Valence Compounds

Orthogonal electronic coupling in multicentre arylamine mixed-valence compounds based on a dibenzofulvene–thiophene conjugated bridge

2017 ◽  
Vol 53 (64) ◽  
pp. 8960-8963 ◽  
Author(s):  
A. Beneduci ◽  
G. A. Corrente ◽  
E. Fabiano ◽  
V. Maltese ◽  
S. Cospito ◽  
...  
Keyword(s):  
Near Infrared ◽  
Mixed Valence ◽  
Infrared Region ◽  
Optical Modulation ◽  
Electronic Coupling ◽  
Voltage Dependent ◽  
Near Infrared Region ◽  
Mixed Valence Compounds

Novel H-shaped tetrarylamine mixed valence compounds showing orthogonal electronic coupling generate voltage-dependent electro-optical modulation in the near infrared region.

scholarly journals Electronic coupling mediated by furan, thiophene, selenophene and tellurophene in a homologous series of organic mixed valence compounds

2014 ◽  
Vol 50 (74) ◽  
pp. 10883 ◽  
Author(s):  
Ann Christin Jahnke ◽  
Mariana Spulber ◽  
Markus Neuburger ◽  
Cornelia G. Palivan ◽  
Oliver S. Wenger
Keyword(s):  
Homologous Series ◽  
Mixed Valence ◽  
Electronic Coupling ◽  
Mixed Valence Compounds

Mixed valence complexes involving MM quadruple bonds (M=Mo or W)

2007 ◽  
Vol 366 (1862) ◽  
pp. 101-112 ◽  
Author(s):  
Malcolm H Chisholm
Keyword(s):  
Mixed Valence ◽  
Electronic Coupling ◽  
Organic Radical ◽  
Radical Anions ◽  
Class Iii ◽  
Mixed Valency ◽  
Bridging Ligand ◽  
Quadruple Bond ◽  
Redox Active ◽  
Quadruple Bonds

The MM quadruple bond of configuration MM σ 2 π 4 δ 2 is redox active and in many ways ideally suited for studies of mixed valency when two or more such centres are linked by a bridging ligand. In this account, the mechanism of electronic coupling is examined for complexes of the type [L 3 M 2 bridgeM 2 L 3 ] 0/+ where L, a pivalate; bridge, a dicarboxylate or related ligand and M, Mo or W. The represented examples allow us to probe electronic factors close to the class II/III border and readily distinguish between electron and hole transfer in the superexchange mechanism. The potential for mixed valence organic radical anions mediated by the M 2 centre is also raised and one specific example of class III behaviour is described.

Synthesis and wire-like performance of diruthenium molecular wire with a C≡C-porphyrin-C≡C linker

2015 ◽  
Vol 19 (01-03) ◽  
pp. 442-450 ◽  
Author(s):  
Yuya Tanaka ◽  
Masanori Ono ◽  
Munetaka Akita
Keyword(s):  
Mixed Valence ◽  
Chemical Oxidation ◽  
Electronic Coupling ◽  
Cyclic Voltammogram ◽  
Class Iii ◽  
Metal Centers ◽  
Intervalence Charge Transfer ◽  
Ir Study ◽  
Diruthenium Complex ◽  
Back Donation

A diruthenium complex with a free-base porphyrin linker 1 is synthesized and characterized by 1 H and 31 P NMR, IR, and ESI-TOF-MS spectroscopy. A cyclic voltammogram of 1 shows two reversible waves attributed to the redox processes at the ruthenium centers, and a compropotionation constant (K C ) has been determined to be 1.8 × 105, indicating that a mixed valence state of 1+ is thermodynamically stable. The monocationic complex 1+ obtained by chemical oxidation of 1 by [ Cp 2 Fe ] PF 6 shows an intervalence charge transfer (IVCT) band in the NIR region. On the basis of the electronic coupling ( V ab) of 2644 cm-1 obtained by analysis of the IVCT band, complex 1+• is assigned as a Class III compound according to the Robin–Day classification. DFT calculation and IR study suggest that the strength of π-back donation is one of key determinants for a strong electronic coupling between the two metal centers.

Excited-State Electronic Coupling and Photoinduced Multiple Electron Transfer in Two Related Ligand-Bridged Hexanuclear Mixed-Valence Compounds

2002 ◽  
Vol 41 (17) ◽  
pp. 4389-4395 ◽  
Author(s):  
Brian W. Pfennig ◽  
Carolyn J. Mordas ◽  
Alex McCloskey ◽  
Jenny V. Lockard ◽  
Patty M. Salmon ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Excited State ◽  
Mixed Valence ◽  
Electronic Coupling ◽  
Mixed Valence Compounds

Electronic Coupling in Dimetallic Complexes with π-Conjugated Bridge

2006 ◽  
Vol 6 (11) ◽  
pp. 3347-3350 ◽  
Author(s):  
Min-Chul Chung ◽  
Ho-Geun Ahn ◽  
Chee-Hun Kwak ◽  
Munetaka Akita
Keyword(s):  
Radical Cation ◽  
Coupling Parameter ◽  
Mixed Valence ◽  
Absorption Peak ◽  
Electronic Coupling ◽  
Class Iii ◽  
Effective Coupling ◽  
Electronic Delocalization

Compound 2, [(η5-C5Me5) Fe(dppe)]2 (μ-C≡C–CH=CH–C≡C), was prepared by the reaction of compound 1, [η5-C5Me5) Fe(dppe)]+2 (μ2-C=CH–CH=CH–HC=C) · (PF 6)2–, with KOBut. Compound 2 showed two quasi-reversible one-electron oxidations at −0.674 and −0.253 V, respectively. The comproportionation constant, Kc, was calculated from these measurements. The mixed-valence(MV) radical cation 2+ showed an absorption peak at 1586 nm, which was assigned to the MV π–π band of the delocalized complex (Robin-Day Mixed-valence Class III) and the effective coupling parameter, Hab, is consistent with the presence of electronic delocalization.

PHONONS IN MIXED VALENCE COMPOUNDS

1981 ◽  
Vol 42 (C6) ◽  
pp. C6-3-C6-10 ◽  
Author(s):  
W. Kress ◽  
H. Bilz ◽  
G. Güntherodt ◽  
A. Jayaraman
Keyword(s):  
Mixed Valence ◽  
Mixed Valence Compounds

scholarly journals Mixed-valence Compounds: AuO2 and AuS

ChemPhysChem ◽  
2018 ◽  
Vol 19 (22) ◽  
pp. 2971-2971
Author(s):  
Meng Tang ◽  
Yanmei Zhang ◽  
Siya Li ◽  
Xi Wu ◽  
Yan Jia ◽  
...  
Keyword(s):  
Mixed Valence ◽  
Mixed Valence Compounds
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