Transition-Metal 1,2 Diheterolenes and Polyheterotetra-heterafulvalenes: Precursors of Conducting Solids

Papavassiliou, George C.; Kakoussis, V. C.; Lagouvardos, D. J.; Mousdis, George A.

doi:10.1080/00268949008036002

Cited by 17 publications

(12 citation statements)

References 37 publications

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“…[9,12,16]. Also, using the compounds of Figure 7 and selenium analogues, as starting materials, the preparation of (neutral) M 1,2-DTs is possible (see [9,14,36,[48][49][50]52,63,64]). The old method, using 1,2-diketones (or benzoins) as starting materials, was applied for the preparation of a number of neutral complexes.…”

Section: Methodsmentioning

confidence: 99%

“…In some cases, e.g., when the ligand is dmit, dmio and etdt, cation deficient (1 > x > 0) complexes are obtained, instead of neutral ones (see [6,12]). Also, the anionic salts, precursors of neutral complexes, could be obtained from several starting materials (e.g., CS 2 , CSe 2 , vinylene trithiocarbonate) through the dianionic complexes of Zn or Hg (see [6,9,12,16,30,130,131] and references therein) as in the procedures of Scheme 2.…”

Section: Methodsmentioning

confidence: 99%

“…The choice of method depends, amongst other things, on the availability of the starting materials. Usually, as in the case of the preparation of TTFs [9,12,16], 1,3-dithiole-2-ketones have been used as starting materials [12,16,70,[73][74][75]97,113] and the required neutral M 1,2-DTs were obtained from them, according to a three-step procedure of Scheme 1.…”

Section: Preparationsmentioning

confidence: 99%

“…They are compared to those obtained from the corresponding TTFs and similar single component materials. More information concerning the ligands of Table 1 can be found in [6][7][8][9][10][11][12][13][14][15][16]20,21,24,[26][27][28]30,31,34,36,[48][49][50]53,[61][62][63][64]72,77,79,88,89,92,94,[100][101][102][103][104]. More information concerning the ligands of Table 2 can be found in the corresponding references for L1 [34], L2 [34,98], L3 [33,95,102], L4 …”

Section: Introductionmentioning

confidence: 99%

“…A number of extended TTF-dithiolate ligands are tabulated in Table 3. Dithiolene ligands could be coordinated as 1,2-enedithiolate dianions (as in Tables 1-3), neutral dithioketones or mixed valence thioketones-radical thiolate monoanions-and have been regarded both as innocent and non-innocent ligands [6][7][8][9][10]49,68]. These single component (neutral) complexes exhibit semiconducting or metallic behaviour.…”

Section: Introductionmentioning

confidence: 99%

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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%

Section: Methodsmentioning

confidence: 99%

Section: Preparationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

2012

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Ni Dithiolenes – A Theoretical Study on Structure–Property Relationships

et al. 2013

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The linear and nonlinear optical (L&NLO) properties, the energy difference between the highest occupied molecular orbital and the lowest unoccupied molecular orbital (HOMO-LUMO gap), the first excitation energy (E exc ), and four indices for the evaluation of the diradical character (DC) of a series of Ni dithiolene derivatives have been computed by employing density functional theory (DFT). The selected DFT functionals provide reliable results for several properties [e.g., excitation energies and (hyper)polarizabilities]. An Atoms in Molecules analysis has been performed and several related properties have been reported (e.g., the average de-[a] Institute

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Interplay of Charge Transfer, Dimensionality, and Amide Hydrogen Bond Network Adaptability in TCNQF4 Complexes of EDO-TTF-CONH2 and EDT-TTF-CONH2

Baudron

Meźière²,

Heuzé³

et al. 2002

Journal of Solid State Chemistry

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Transition-Metal 1,2 Diheterolenes and Polyheterotetra-heterafulvalenes: Precursors of Conducting Solids

Cited by 17 publications

References 37 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

Ni Dithiolenes – A Theoretical Study on Structure–Property Relationships

Interplay of Charge Transfer, Dimensionality, and Amide Hydrogen Bond Network Adaptability in TCNQF4 Complexes of EDO-TTF-CONH2 and EDT-TTF-CONH2

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