Syntheses and characterization of several nickel bis(dithiolene) complexes with strong and broad Near-IR absorption

Miao, Qingqing; Gao, Junxiong; Wang, Zeqing; Yu, Hang; Luo, Yi; Ma, Tingli

doi:10.1016/j.ica.2011.07.046

Cited by 64 publications

(59 citation statements)

References 49 publications

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“…The next step of the reactions is the hydrolysis and then the formation of neutral complexes using metal carbonyl or other reactive salts, e.g., NiCl 2 , PdCl 2 (PhCN) 2 . The following Scheme 4 gives an example of the preparation of a series of complexes from the corresponding 1,2-diketones [44,60,65,68,89,98,101,110,111]. Scheme 4.…”

Section: Methodsmentioning

confidence: 99%

Neutral Metal 1,2-Dithiolenes: Preparations, Properties and Possible Applications of Unsymmetrical in Comparison to the Symmetrical

2012

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This paper is an overview concerning the preparations and properties as well as possible applications of neutral (one component) metal 1,2-dithiolenes (and selenium analogues). The structural, chemical, electrochemical, optical and electrical behavior of these complexes depend strongly on the nature of ligand and/or the metal. The results of unsymmetrical in comparison to those of symmetrical complexes related to the properties of materials in the solid state are primarily discussed. The optical absorption spectra exhibit strong bands in the near IR spectral region ca. 700 to ca. 1950 nm. X-ray crystal structure solutions show that the complexes usually have square-planar geometry with S-S and/or M-S contacts. Some of them behave as semiconductors or conductors (metals) and are stable in air. The cyclic voltammograms at negative potentials are different from the corresponding potentials of tetrathiafulvalenes (TTFs). As a consequence, the LUMO bands occur at much lower levels than those of TTFs. Consequently, electrical measurements under conditions of field effect transistors exhibit n-type or ambipolar behavior. Illumination of materials with high power lasers exhibits non-linear optical behavior. These properties enable metal 1,2-dithiolene complexes to be classified as promising candidates for optical and electronic applications, (e.g., saturable absorbers, ambipolar inverters). OPEN ACCESSCrystals 2012, 2 763

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Section: Methodsmentioning

confidence: 99%

Neutral Metal 1,2-Dithiolenes: Preparations, Properties and Possible Applications of Unsymmetrical in Comparison to the Symmetrical

2012

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“…Ni(II)-dithiolene complexes being square planar in geometry and having sulpher as coordinating atoms in the ligand backbone are good candidates to conduct electricity. 6 In this present report, with a little modification, we have synthesized a previously reported nickel(II)-dithiolene complex bis(1,2-diphenylethylene-1,2-dithiolate)nickel(II)(1) by Ma et al, 12 and characterized it X-ray crystallographically. The compound was previously shown 12 to be near IR absorbing.…”

Section: Introductionmentioning

confidence: 92%

Synthesis, structure and solid-state electrical conductivity of bis(1,2-diphenylethylene-1,2-dithiolate)nickel(II)

Dutta

Chatterjee

Bhar³

et al. 2019

J Chem Sci

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One nickel(II)-dithiolene complex bis(1,2-diphenylethylene-1,2-dithiolate)nickel(II) has been synthesized and crystallographically characterized. The complex is square planar at its metal centre. The compound in its solid-state is found to conduct electricity at room temperature. Variation of conduction is also found on raising the temperature. Instead of a metal…metal orbital overlap, the electron density is expected here to pass through some other covalent and electrostatic bonds of the compound in solid-state resulting in electricity conduction.

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“…It was also noted that the oxidation of the four complexes takes the positive charge away from the TiO 2 semiconductor, so these complexes can be considered as efficient light harvesting [25]. Homoleptic complexes of nickel with 1, 2 dithiolene also exhibit DSSCs functions [31]. Because they contain only sulfur atoms in the first coordination shell, these complexes absorb near IR radiation and can easily inject their electrons into the conduction band of the semiconductor [31].…”

Section: Introductionmentioning

confidence: 99%

“…Homoleptic complexes of nickel with 1, 2 dithiolene also exhibit DSSCs functions [31]. Because they contain only sulfur atoms in the first coordination shell, these complexes absorb near IR radiation and can easily inject their electrons into the conduction band of the semiconductor [31]. Metal complexes with 1,3dithiole-2-thione-4,5-dithiolate (dmit) ligands are an important class of functional materials.…”

Section: Introductionmentioning

confidence: 99%

Computational studies of Ni(II) photosensitizers complexes containing 1,1′-bis(diphenylphosphino)ferrocene and dithio ligands

Brahim

Humbel

et al. 2020

Can. J. Chem.

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Detailed theoretical studies of Ni(II) complexes in a distorted square planar form and containing dithio and (P, P) chelating ligands were performed. These Ni(II) complexes are investigated for their use in dye-sensitized solar cells (DSSC). Structures and UV–vis spectra are calculated at density functional theory (DFT) and time-dependent density functional theory (TD-DFT) theories using B3LYP and CAM-B3LYP functionals and 6-31G(d,p) and 6-31G+(d) basis sets. Geometry optimizations result in excellent agreement with the experimental results. Moreover, the analysis of the frontier molecular orbitals (FMOs) allowed a detailed assignment and a clear analysis of the electronic transitions. The TD-DFT calculations reproduce the main spectroscopic properties observed and substituent effects. The results reveal that all absorption spectra are characterized by mixed character mainly dominated by metal to ligand and ligand to ligand charge transfers (MLCT and LLCT). We unveil how the substituent variations affect the DSSCs features of the complexes.

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Syntheses and characterization of several nickel bis(dithiolene) complexes with strong and broad Near-IR absorption

Cited by 64 publications

References 49 publications

Neutral Metal 1,2-Dithiolenes: Preparations, Properties and Possible Applications of Unsymmetrical in Comparison to the Symmetrical

Neutral Metal 1,2-Dithiolenes: Preparations, Properties and Possible Applications of Unsymmetrical in Comparison to the Symmetrical

Synthesis, structure and solid-state electrical conductivity of bis(1,2-diphenylethylene-1,2-dithiolate)nickel(II)

Computational studies of Ni(II) photosensitizers complexes containing 1,1′-bis(diphenylphosphino)ferrocene and dithio ligands

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