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Youssef K, Poidevin C, Vacher A, Fihey A, Le Gal Y, Roisnel T, Lorcy D. Radical and diradical states of bis(molybdenocene dithiolene) complexes. Dalton Trans 2024; 53:9763-9776. [PMID: 38780397 DOI: 10.1039/d4dt00694a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
The synthesis and characterization of two bis(dithiolene) proligands involving heteroatomic linkers such as 1,4-dithiine and dihydro-1,4-disiline between the two protected dithiolene moieties are described. Two bimetallic complexes involving these heteroatomic bridges between two redox active bis(cyclopentadienyl)molybdenum dithiolene moieties have been synthesized and characterized by electrochemistry, spectroelectrochemistry, and their properties rationalized with (TD-)DFT. Cyclic voltammetry experiments show sequential oxidation of the two redox centers with ΔE values between successive one-electron transfers varying according to the nature of the bridge. Depending on the nature of the heteroatomic bridge, the bis-oxidized complexes exhibit either a diradical character with both radicals essentially localized on the metallacycles, or a closed-shell dicationic state.
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Affiliation(s)
- Khalil Youssef
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Corentin Poidevin
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Antoine Vacher
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Arnaud Fihey
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Yann Le Gal
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Thierry Roisnel
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Dominique Lorcy
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
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2
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Wu C, Kakarla LN, Chandrasekaran CP, Zhang X, Mague JT, Sproules S, Donahue JP. Asymmetric by Design: Heteroleptic Coordination Compounds with Redox-Active Dithiolene and 1,2,4,5-Tetrakis(isopropylthio)benzene Ligands. Inorg Chem 2024; 63:173-183. [PMID: 38134365 PMCID: PMC10777400 DOI: 10.1021/acs.inorgchem.3c02928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 11/22/2023] [Accepted: 11/24/2023] [Indexed: 12/24/2023]
Abstract
The 1,2,4,5-tetrakis(alkylthio)benzenes are redox-active organosulfur molecules that support oxidation to a stable radical cation. Their utility as ligands for the assembly of multimetal complexes with tailored functionality/property is unexamined. Here, 1,2,4,5-tetrakis(isopropylthio)benzene (tptbz, 1) is shown to bind PdCl2 at either one end, leaving the other open, or at both ends to form centrosymmetric [Cl2Pd(tptbz)PdCl2], 4. Ligand metathesis between Na2[(N≡C)2C2S2] (Na2mnt) and [Cl2M(tptbz)] (M = Pd, 2; M = Pt, 3) yields [(mnt)M(tptbz)] (M = Pd, 5; M = Pt, 6), but an alternative route involving transmetalation with [(mnt)SnMe2] delivers substantially greater yield. The mixed dithiolene-dithioether compound [(Ph2C2S2)Pt(tptbz)] (8) is formed by a similar transmetalation protocol using [(Ph2C2S2)SnnBu2]. Compounds 5, 6, and 8 are the first such heteroleptic complexes prepared by deliberate synthesis. The cyclic voltammetry of 8 reveals anodic waves at +0.14 and +0.97 V vs Fc+/Fc, which are attributed to successive dithiolene oxidation processes. While oxidized at +0.73 V as a free ligand, the redox-active MO of tptbz is pushed to a higher potential upon coordination to Pt2+ and is inaccessible. Calculations of the structures of [8]+ and of [((Cl2-3,5-C6H3)2C2S2)Pt(tptbz)]+ show that, in the latter, the dithiolene MOs are drawn down in energy into proximity with the tptbz MOs.
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Affiliation(s)
- Che Wu
- Department
of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118-5698, United States
| | - Lakshmi Nishanth Kakarla
- Department
of Chemistry and Biochemistry, Lamar University, Beaumont, Texas 77710, United States
| | | | - Xiaodong Zhang
- Department
of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118-5698, United States
| | - Joel T. Mague
- Department
of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118-5698, United States
| | - Stephen Sproules
- WestCHEM,
School of Chemistry, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - James P. Donahue
- Department
of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118-5698, United States
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3
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Youssef K, Vacher A, Barrière F, Roisnel T, Lorcy D. Electronic interaction between two fluorenyl-bridged molybdenocene dithiolene electroactive centers. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.116086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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4
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Schallenberg D, Pardemann N, Villinger A, Seidel WW. Synthesis and coordination behaviour of 1 H-1,2,3-triazole-4,5-dithiolates. Dalton Trans 2022; 51:13681-13691. [PMID: 36000523 DOI: 10.1039/d2dt00410k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The preparative access to and first group 10 metal complexes of novel 1H-1,2,3-triazole-4,5-dithiolate ligands (tazdt2-) are reported. A set of S-protected 1H-1,2,3-triazole-4,5-dithiol derivatives with R1 = 2,6-dimethylphenyl (Xy) or benzyl (Bn) at N1 and with R2 = Bn or trimethylsilylethyl (TMS-ethyl) at both S atoms were synthesized by a 1,3-dipolar cycloaddition catalysed by either Ru(II) or Cu(I). Extensive investigations on the removal of the protective groups resulted the reductive removal of benzyl groups to be superior in isolating the free 4,5-dithiols of R1N3C2(SH)2 with R1 = Xy (H2-8) or Bn (H2-9). Coordination of these ligands led to the formation of the metal complexes [(η5-C5H5)2Ti(8)], [Ni(dppe)(8)], [Ni(dppe)(9)], [Pd(dppe)(9)] {dppe = bis(diphenylphosphanyl)ethane} and homoleptic (NBu4)n[Ni(8)2] (n = 1, 2). All complexes were fully characterized including structure determination by single crystal XRD. The electronic properties of the Ni and Pd complexes were determined by cyclic voltammetry, UV/vis and EPR spectroscopy supported by DFT calculations. According to the spectral and electrochemical data, the tazdt2- complexes resemble the corresponding benzene-1,2-dithiolate (bdt2-) type compounds reflecting the restricted influence of the electron-withdrawing N3 moiety in the backbone. DSC-TGA measurements with [(η5-C5H5)2Ti(8)] and [Ni(dppe)(8)] indicate a well-defined thermal process involving simultaneous elimination of both N2 and CS.
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Affiliation(s)
- David Schallenberg
- Institut für Chemie, Universität Rostock, Albert-Einstein-Straße 3a, 18059 Rostock, Germany.
| | - Nils Pardemann
- Institut für Chemie, Universität Rostock, Albert-Einstein-Straße 3a, 18059 Rostock, Germany.
| | - Alexander Villinger
- Institut für Chemie, Universität Rostock, Albert-Einstein-Straße 3a, 18059 Rostock, Germany.
| | - Wolfram W Seidel
- Institut für Chemie, Universität Rostock, Albert-Einstein-Straße 3a, 18059 Rostock, Germany. .,Leibniz Institut für Katalyse e.V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany
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5
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Kumar S, Selvachandran M, Arumugam K, Shaw MC, Wu C, Maurer M, Zhang X, Sproules S, Mague JT, Donahue JP. Open-Ended Metallodithiolene Complexes with the 1,2,4,5-Tetrakis(diphenylphosphino)benzene Ligand: Modular Building Elements for the Synthesis of Multimetal Complexes. Inorg Chem 2021; 60:13177-13192. [PMID: 34370468 PMCID: PMC8424627 DOI: 10.1021/acs.inorgchem.1c01573] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
Open-ended, singly
metalated dithiolene complexes with 1,2,4,5-tetrakis(diphenylphosphino)benzene
(tpbz) are prepared either by ligand transfer to [Cl2M(tpbz)]
from (R2C2S2)SnR′2 (R = CN, R′ = Me; R = Me, R′ = nBu) or by a direct reaction between tpbz and [M(S2C2R2)2] (M = Ni, Pd, Pt; R = Ph, p-anisyl) in a 1:1 ratio. The formation of dimetallic [(R2C2S2)M(tpbz)M(S2C2R2)] attends these syntheses in modest amounts, but the
open-ended compounds are readily separated by silica chromatography.
As affirmed by X-ray crystallographic characterization of numerous
members of the set, the [(R2C2S2)M(tpbz)]
compounds show dithiolene ligands in their fully reduced ene-1,2-dithiolate
form conjoined with divalent Group 10 ions. Minor amounts of octahedral
[(Ph2C2S2)2PtIV(tpbz)], a presumed intermediate, are isolated from the preparation
of [(Ph2C2S2)PtII(tpbz)].
Heterodimetallic [(Ph2C2S2)Pt(tpbz)Ni(S2C2Me2)] is prepared from [(Ph2C2S2)PtII(tpbz)]; its cyclic voltammogram,
upon anodic scanning, shows two pairs of closely spaced, but resolved,
1e– oxidations corresponding first to [R2C2S22–] –
1e– → [R2C2S•S–] and then to [R2C2S•S–] – 1e– → [R2(C=S)2]. The open diphosphine
of [(R2C2S2)M(tpbz)] can be oxidized
to afford open-ended [(R2C2S2)M(tpbzE2)] (E = O, S). Synthesis of the octahedral [(dppbO2)3Ni][I3]2 [dppbO2 =
1,2-bis(diphenylphosphoryl)benzene] suggests that the steric profile
of [(R2C2S2)M(tpbzE2)]
is moderated enough that three could be accommodated as ligands around
a metal ion. Open-ended metallodithiolene complexes
with 1,2,4,5-tetrakis(diphenylphosphino)benzene
(tpbz) are prepared either by the reaction of [M(S2C2R2)2] with tpbz in a 1:1 ratio or by
transmetalation from [(R2C2S2)SnR′2] to [Cl2M(tpbz)]. 31P NMR spectroscopy
provides a clear diagnostic with the metalated (∼55 ppm) and
open-phosphine (−14 ppm) signals. These compounds may be metalated
at their open end to produce heterodimetallic compounds, or the open
phosphines may be oxidized with chalcogen donors to the corresponding
phosphine oxides or sulfides.
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Affiliation(s)
- Satyendra Kumar
- Department of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118, United States
| | - Malathy Selvachandran
- Department of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118, United States
| | - Kuppuswamy Arumugam
- Department of Chemistry, Wright State University, 3640 Colonel Glenn Highway, Dayton, Ohio 45435-0001, United States
| | - Mohamed C Shaw
- Department of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118, United States
| | - Che Wu
- Department of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118, United States
| | - Michael Maurer
- Department of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118, United States
| | - Xiaodong Zhang
- Department of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118, United States
| | - Stephen Sproules
- WestCHEM, School of Chemistry, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - Joel T Mague
- Department of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118, United States
| | - James P Donahue
- Department of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118, United States
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6
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Selvachandran M, Kumar S, Zhang X, Mague JT, Donahue JP. Tetrakis-1,2,4,5-(bis(3,5-dimethylphenyl)phosphino)benzene (Me16tpbz): A soluble and spectroscopically simple variant of the 1,2,4,5-tetraphosphinobenzene ligand platform. Polyhedron 2021. [DOI: 10.1016/j.poly.2020.114985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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7
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Obanda A, Valerius K, Mague JT, Sproules S, Donahue JP. Group 10 Metal Dithiolene Bis(isonitrile) Complexes: Synthesis, Structures, Properties, and Reactivity. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00375] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Antony Obanda
- Department of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118-5698, United States
| | - Kendra Valerius
- Department of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118-5698, United States
| | - Joel T. Mague
- Department of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118-5698, United States
| | - Stephen Sproules
- WestCHEM, School of Chemistry, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - James P. Donahue
- Department of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118-5698, United States
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8
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Dorazio SJ, Vogel A, Dechert S, Nevonen DE, Nemykin VN, Brückner C, Meyer F. Siamese-Twin Porphyrin Goes Platinum: Group 10 Monometallic, Homobimetallic, and Heterobimetallic Complexes. Inorg Chem 2020; 59:7290-7305. [PMID: 32374995 DOI: 10.1021/acs.inorgchem.0c00714] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A series of PtII-based monometallic (H2PtL), homobimetallic (Pt2L), and heterobimetallic (NiPtL and PdPtL) group 10 complexes of the previously established expanded twin porphyrin (H4L) were prepared. Structural characterization of the bimetallic PtII series (Pt2L, NiPtL, and PdPtL) revealed their similar general structures, with slight differences correlated to the ion size. An improvement of the metal-ion insertion process also allowed efficient preparation of the known Pd2L complex, and the novel heterobimetallic NiPdL complex was also structurally characterized. UV-vis spectroscopy, NMR spectroscopy, magnetic circular dichroism (MCD), and (spectro)electrochemistry were used to characterize the complexes; the electronic properties followed largely established lines for metal complexes of the twin porphyrin, except that the PtII-based systems exhibited more complex UV-vis spectral signatures. MCD spectra accompanied by density functional theory (DFT)/time-dependent DFT computations (TDDFT) rationalize the origins of the optical features of the twin porphyrin. The presence of the nonplanar, nonaromatic macrocyclic π system with conjugation pathways confined to each half of the molecule could be visualized. Significant pyrazole(π) → pyrrole(π*) charge-transfer character was predicted for several transitions in the visible region. This study adds to our fundamental understanding of the formation, structure, and electronic structure of bimetallic complexes of this class of expanded metalloporphyrins containing nonpyrrolic moieties.
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Affiliation(s)
- Sarina J Dorazio
- Institute for Inorganic Chemistry, University of Göttingen, Tammannstraße 4, D-37077 Göttingen, Germany.,Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
| | - Anastasia Vogel
- Institute for Inorganic Chemistry, University of Göttingen, Tammannstraße 4, D-37077 Göttingen, Germany
| | - Sebastian Dechert
- Institute for Inorganic Chemistry, University of Göttingen, Tammannstraße 4, D-37077 Göttingen, Germany
| | - Dustin E Nevonen
- Department of ChemistryUniversity of Manitoba, 360 Parker Building, Winnipeg, Manitoba R3T 2N2, Canada
| | - Victor N Nemykin
- Department of ChemistryUniversity of Manitoba, 360 Parker Building, Winnipeg, Manitoba R3T 2N2, Canada
| | - Christian Brückner
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
| | - Franc Meyer
- Institute for Inorganic Chemistry, University of Göttingen, Tammannstraße 4, D-37077 Göttingen, Germany
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9
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Wessig P, Freyse D, Schuster D, Kelling A. Fluorescent Dyes with Large Stokes Shifts Based on Benzo[1,2‐d:4,5‐d']bis([1,3]dithiole) (“S
4
‐DBD Dyes”). European J Org Chem 2020. [DOI: 10.1002/ejoc.202000093] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Pablo Wessig
- Institut für Chemie Universität Potsdam Karl‐Liebknecht‐Str. 24‐25 14476 Potsdam Germany
| | - Daniel Freyse
- Institut für Chemie Universität Potsdam Karl‐Liebknecht‐Str. 24‐25 14476 Potsdam Germany
| | - David Schuster
- Institut für Chemie Universität Potsdam Karl‐Liebknecht‐Str. 24‐25 14476 Potsdam Germany
| | - Alexandra Kelling
- Institut für Chemie Universität Potsdam Karl‐Liebknecht‐Str. 24‐25 14476 Potsdam Germany
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10
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Yu CH, Zhu C, Ji X, Hu W, Xie H, Bhuvanesh N, Fang L, Ozerov OV. Palladium bis-pincer complexes with controlled rigidity and inter-metal distance. Inorg Chem Front 2020. [DOI: 10.1039/d0qi01111h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
We report a series of redox-active bis(pincer) Pd(ii) complexes in which the redox active units are based on either a diarylamido or a carbazolide framework.
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Affiliation(s)
- Cheng-Han Yu
- Department of Chemistry
- Texas A&M University
- College Station
- USA
| | - Congzhi Zhu
- Department of Chemistry
- Texas A&M University
- College Station
- USA
| | - Xiaozhou Ji
- Department of Chemistry
- Texas A&M University
- College Station
- USA
| | - Wei Hu
- Department of Chemistry
- Texas A&M University
- College Station
- USA
| | - Haomiao Xie
- Department of Chemistry
- Texas A&M University
- College Station
- USA
| | | | - Lei Fang
- Department of Chemistry
- Texas A&M University
- College Station
- USA
| | - Oleg V. Ozerov
- Department of Chemistry
- Texas A&M University
- College Station
- USA
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11
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Xie J, Boyn JN, Filatov AS, McNeece AJ, Mazziotti DA, Anderson JS. Redox, transmetalation, and stacking properties of tetrathiafulvalene-2,3,6,7-tetrathiolate bridged tin, nickel, and palladium compounds. Chem Sci 2019; 11:1066-1078. [PMID: 34084362 PMCID: PMC8145528 DOI: 10.1039/c9sc04381k] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Here we report that capping the molecule TTFtt (TTFtt = tetrathiafulvalene-2,3,6,7-tetrathiolate) with dialkyl tin groups enables the isolation of a stable series of redox congeners and facile transmetalation to Ni and Pd. TTFtt has been proposed as an attractive building block for molecular materials for two decades as it combines the redox chemistry of TTF and dithiolene units. TTFttH4, however, is inherently unstable and the incorporation of TTFtt units into complexes or materials typically proceeds through the in situ generation of the tetraanion TTFtt4-. Capping of TTFtt4- with Bu2Sn2+ units dramatically improves the stability of the TTFtt moiety and furthermore enables the isolation of a redox series where the TTF core carries the formal charges of 0, +1, and +2. All of these redox congeners show efficient and clean transmetalation to Ni and Pd resulting in an analogous series of bimetallic complexes capped by 1,2-bis(diphenylphosphino)ethane (dppe) ligands. Furthermore, by using the same transmetalation method, we synthesized analogous palladium complexes capped by 1,1'-bis(diphenylphosphino)ferrocene (dppf) which had been previously reported. All of these species have been thoroughly characterized through a systematic survey of chemical and electronic properties by techniques including cyclic voltammetry (CV), ultraviolet-visible-near infrared spectroscopy (UV-vis-NIR), electron paramagnetic resonance spectroscopy (EPR), nuclear magnetic resonance spectroscopy (NMR) and X-ray diffraction (XRD). These detailed synthetic and spectroscopic studies highlight important differences between the transmetalation strategy presented here and previously reported synthetic methods for the installation of TTFtt. In addition, the utility of this stabilization strategy can be illustrated by the observation of unusual TTF radical-radical packing in the solid state and dimerization in the solution state. Theoretical calculations based on variational 2-electron reduced density matrix methods have been used to investigate these unusual interactions and illustrate fundamentally different levels of covalency and overlap depending on the orientations of the TTF cores. Taken together, this work demonstrates that tin-capped TTFtt units are ideal reagents for the installation of redox-tunable TTFtt ligands enabling the generation of entirely new geometric and electronic structures.
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Affiliation(s)
- Jiaze Xie
- Department of Chemistry, The James Franck Institute, University of Chicago Chicago Illinois 60637 USA
| | - Jan-Niklas Boyn
- Department of Chemistry, The James Franck Institute, University of Chicago Chicago Illinois 60637 USA
| | - Alexander S Filatov
- Department of Chemistry, The James Franck Institute, University of Chicago Chicago Illinois 60637 USA
| | - Andrew J McNeece
- Department of Chemistry, The James Franck Institute, University of Chicago Chicago Illinois 60637 USA
| | - David A Mazziotti
- Department of Chemistry, The James Franck Institute, University of Chicago Chicago Illinois 60637 USA
| | - John S Anderson
- Department of Chemistry, The James Franck Institute, University of Chicago Chicago Illinois 60637 USA
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12
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Vacher A, Le Gal Y, Roisnel T, Dorcet V, Devic T, Barrière F, Lorcy D. Electronic Communication within Flexible Bisdithiolene Ligands Bridging Molybdenum Centers. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00485] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Antoine Vacher
- Université de Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, F-35000 Rennes, France
| | - Yann Le Gal
- Université de Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, F-35000 Rennes, France
| | - Thierry Roisnel
- Université de Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, F-35000 Rennes, France
| | - Vincent Dorcet
- Université de Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, F-35000 Rennes, France
| | - Thomas Devic
- Institut des Matériaux Jean Rouxel (IMN), Université de Nantes, UMR CNRS 6502, 2 rue de la Houssinière, BP 32229, 44322 Nantes Cedex 3, France
| | - Frédéric Barrière
- Université de Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, F-35000 Rennes, France
| | - Dominique Lorcy
- Université de Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, F-35000 Rennes, France
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13
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Hua C, DeGayner JA, Harris TD. Thiosemiquinoid Radical-Bridged Cr III2 Complexes with Strong Magnetic Exchange Coupling. Inorg Chem 2019; 58:7044-7053. [PMID: 31034214 DOI: 10.1021/acs.inorgchem.9b00674] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Semiquinoid radical bridging ligands are capable of mediating exceptionally strong magnetic coupling between spin centers, a requirement for the design of high-temperature magnetic materials. We demonstrate the ability of sulfur donors to provide much stronger coupling relative to their oxygen congeners in a series of dinuclear complexes. Employing a series of chalcogen donor-based bis(bidentate) benzoquinoid bridging ligands, the series of complexes [(TPyA)2Cr2(RL4-)]2+ (OLH4 = 1,2,4,5-tetrahydroxybenzene, OSLH4 = 1,2-dithio-4,5-dihydroxybenzene, SLH4 = 1,2,4,5-tetrathiobenzene, TPyA = tris(2-pyridylmethyl)amine) was synthesized. Variable-temperature dc magnetic susceptibility data reveal the presence of weak antiferromagnetic superexchange coupling between CrIII centers in these complexes, with exchange constants of J = -2.83(3) (OL4-), -2.28(5) (OSL4-), and -1.80(2) (SL4-) cm-1. Guided by cyclic voltammetry and spectroelectrochemical measurements, chemical one-electron oxidation of these complexes gives the radical-bridged species [(TPyA)2Cr2(RL3-•)]3+. Variable-temperature dc susceptibility measurements in these complexes reveal the presence of strong antiferromagnetic metal-semiquinoid radical coupling, with exchange constants of J = -352(10) (OL3-•), - 401(8) (OSL3-•), and -487(8) (SL3-•) cm-1. These results provide the first measurement of magnetic coupling between metal ions and a thiosemiquinoid radical, and they demonstrate the value of moving from O to S donors in radical-bridged metal ions in the design of magnetic molecules and materials.
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Affiliation(s)
- Carol Hua
- Department of Chemistry , Northwestern University , Evanston , Illinois 60208 , United States
| | - Jordan A DeGayner
- Department of Chemistry , Northwestern University , Evanston , Illinois 60208 , United States
| | - T David Harris
- Department of Chemistry , Northwestern University , Evanston , Illinois 60208 , United States
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14
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McGuire J, Miras HN, Richards E, Sproules S. Enabling single qubit addressability in a molecular semiconductor comprising gold-supported organic radicals. Chem Sci 2019; 10:1483-1491. [PMID: 30809365 PMCID: PMC6354843 DOI: 10.1039/c8sc04500c] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 11/21/2018] [Indexed: 01/24/2023] Open
Abstract
A bis(dithiolene)gold complex is presented as a model for an organic molecular electron spin qubit attached to a metallic surface that acts as a conduit to electrically address the qubit. A two-membered electron transfer series is developed of the formula [AuIII(adt)2]1-/0, where adt is a redox-active dithiolene ligand that is sequentially oxidized as the series is traversed while the central metal ion remains AuIII and steadfastly square planar. One-electron oxidation of diamagnetic [AuIII(adt)2]1- (1) produces an S = 1/2 charge-neutral complex, [AuIII(adt2 3-˙)] (2) which is spectroscopically and theoretically characterized with a near negligible Au contribution to the ground state. A phase memory time (T M) of 21 μs is recorded in 4 : 1 CS2/CCl4 at 10 K, which is the longest ever reported for a coordination complex possessing a third-row transition metal ion. With increasing temperature, T M dramatically decreases becoming unmeasurable above 80 K as a consequence of the diminishing spin-lattice (T 1) relaxation time fueled by spin-orbit coupling. These relaxation times are 1-2 orders of magnitude shorter for the solid dilution of 2 in isoelectronic [Ni(adt)2] because this material is a molecular semiconductor. Although the conducting properties of this material provide efficient pathways to dissipate the energy through the lattice, it can also be used to electrically address the paramagnetic dopant by tapping into the mild reduction potential to switch magnetism "on" and "off" in the gold complex without compromising the integrity of its structure. These results serve to highlight the need to consider all components of these spintronic assemblies.
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Affiliation(s)
- Jake McGuire
- WestCHEM School of Chemistry , University of Glasgow , Glasgow , G12 8QQ , UK .
| | - Haralampos N Miras
- WestCHEM School of Chemistry , University of Glasgow , Glasgow , G12 8QQ , UK .
| | - Emma Richards
- School of Chemistry , Cardiff University , Main Building, Park Place , Cardiff , CF10 3AT , UK
| | - Stephen Sproules
- WestCHEM School of Chemistry , University of Glasgow , Glasgow , G12 8QQ , UK .
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15
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Kusamoto T, Nishihara H. Zero-, one- and two-dimensional bis(dithiolato)metal complexes with unique physical and chemical properties. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2018.09.012] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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16
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McGuire J, Miras HN, Donahue JP, Richards E, Sproules S. Ligand Radicals as Modular Organic Electron Spin Qubits. Chemistry 2018; 24:17598-17605. [PMID: 30291646 DOI: 10.1002/chem.201804165] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Indexed: 01/08/2023]
Abstract
The intrinsic redox activity of the dithiolene ligand is presented here as the novel spin host in the design of a prototype molecular electron spin qubit, where the traditional roles of the metal and ligand components in coordination complexes are inverted. A series of paramagnetic bis(dithiolene) complexes with group 10 metals-nickel, palladium, platinum-provides a backdrop to investigate the spin dynamics of the organic ligand radical using pulsed EPR spectroscopy. The temperature dependence of the phase memory time (TM ) is shown to be dependent on the identity of the diamagnetic metal ion, with the short times recorded for platinum a consequence of a diminishing spin-lattice (T1 ) relaxation time driven by spin-orbit coupling. The utility of the radical ligand spin center is confirmed when it delivers one of the longest phase memory times ever recorded for a molecular two-qubit prototype.
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Affiliation(s)
- Jake McGuire
- WestCHEM, School of Chemistry, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Haralampos N Miras
- WestCHEM, School of Chemistry, University of Glasgow, Glasgow, G12 8QQ, UK
| | - James P Donahue
- Department of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana, 70118, USA
| | - Emma Richards
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK
| | - Stephen Sproules
- WestCHEM, School of Chemistry, University of Glasgow, Glasgow, G12 8QQ, UK
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17
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Mews NM, Hörner G, Schubert H, Berkefeld A. Tuning of Thiyl/Thiolate Complex Near-Infrared Chromophores of Platinum through Geometrical Constraints. Inorg Chem 2018; 57:9670-9682. [PMID: 29561154 DOI: 10.1021/acs.inorgchem.8b00122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The chemistry of radical-ligand complexes of the transition metals has developed into a vibrant field of research that spans from fundamental studies on the relationship between the chemical and electronic structures to applications in catalysis and functional materials chemistry. In general, fine-tuning of the relevant properties relies on an increasingly diversifying pool of radical-proligand structures. Surprisingly, the variability of the conformational freedom and the number of distinct bonding modes supported by many radical proligands is limited. This work reports on the angular constraints and relative geometric alignment of metal and ligand orbitals as key parameters that render a series of chemically similar thiyl/thiolate complexes of platinum(II) electronically and spectroscopically distinct. The use of conformational flexible thiophenols as primary ligand scaffolds is essential to establishing a defined radical-ligand [(areneS)2PtII]•+ core whose electronic structure is modulated by a series of auxiliary coligands at platinum.
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Affiliation(s)
- Nicole M Mews
- Institut für Anorganische Chemie , Eberhard Karls Universität Tübingen , Auf der Morgenstelle 18 , 72076 Tübingen , Germany
| | - Gerald Hörner
- Institut für Chemie, Quantenchemie und Bioanorganische Chemie , Technische Universität (TU) Berlin , Straße des 17 Juni 135 , 10623 Berlin , Germany
| | - Hartmut Schubert
- Institut für Anorganische Chemie , Eberhard Karls Universität Tübingen , Auf der Morgenstelle 18 , 72076 Tübingen , Germany
| | - Andreas Berkefeld
- Institut für Anorganische Chemie , Eberhard Karls Universität Tübingen , Auf der Morgenstelle 18 , 72076 Tübingen , Germany
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18
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Arumugam K, Selvachandran M, Obanda A, Shaw MC, Chandrasekaran P, Caston Good SL, Mague JT, Sproules S, Donahue JP. Redox-Active Metallodithiolene Groups Separated by Insulating Tetraphosphinobenzene Spacers. Inorg Chem 2018. [PMID: 29533607 DOI: 10.1021/acs.inorgchem.8b00201] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Compounds of the type [(S2C2R2)M(μ-tpbz)M(S2C2R2)] (R = CN, Me, Ph, p-anisyl; M = Ni, Pd, Pt; tpbz = 1,2,4,5-tetrakis(diphenylphosphino)benzene) have been prepared by transmetalation with [(S2C2R2)SnR'2] reagents, by direct displacement of dithiolene ligand from [M(S2C2R2)2] with 0.5 equiv of tpbz, or by salt metathesis using Na2[S2C2(CN)2] in conjunction with X2M(μ-tpbz)MX2 (X = halide). X-ray crystallography reveals a range of topologies (undulating, chair, bowed) for the (S2C2)M(P2C6P2)M(S2C2) core. The [(S2C2R2)M(μ-tpbz)M(S2C2R2)] (R = Me, Ph, p-anisyl) compounds support reversible or quasireversible oxidations corresponding to concurrent oxidation of the dithiolene terminal ligands from ene-1,2-dithiolates to radical monoanions, forming [(-S•SC2R2)M(μ-tpbz)M(-S•SC2R2)]2+. The R = Ph and p-anisyl compounds support a second, reversible oxidation of the dithiolene ligands to their α-dithione form. In contrast, [(S2C2(CN)2)Ni(tpbz)Ni(S2C2(CN)2)] sustains only reversible, metal-centered reductions. Spectroscopic examination of [(-S•SC2( p-anisyl)2)Ni(μ-tpbz)Ni(-S•SC2( p-anisyl)2)]2+ by EPR reveals a near degenerate singlet-triplet ground state, with spectral simulation revealing a remarkably small dipolar coupling constant of 18 × 10-4 cm-1 that is representative of an interspin distance of 11.3 Å. This weak interaction is mediated by the rigid tpbz ligand, whose capacity to electronically insulate is an essential quality in the development of molecular-based spintronic devices.
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Affiliation(s)
- Kuppuswamy Arumugam
- Department of Chemistry , Wright State University , 3640 Colonel Glenn Highway , Dayton , Ohio 45435-0001 , United States
| | - Malathy Selvachandran
- Department of Chemistry , Tulane University , 6400 Freret Street , New Orleans , Louisiana 70118-5698 , United States
| | - Antony Obanda
- Department of Chemistry , Tulane University , 6400 Freret Street , New Orleans , Louisiana 70118-5698 , United States
| | - Mohamed C Shaw
- Department of Chemistry , Tulane University , 6400 Freret Street , New Orleans , Louisiana 70118-5698 , United States
| | | | - Sonya L Caston Good
- Department of Chemistry , Texas Southern University , 1300 Cleburne Street , Houston , Texas 77004 , United States
| | - Joel T Mague
- Department of Chemistry , Tulane University , 6400 Freret Street , New Orleans , Louisiana 70118-5698 , United States
| | - Stephen Sproules
- WestCHEM, School of Chemistry , University of Glasgow , Glasgow G12 8QQ , United Kingdom
| | - James P Donahue
- Department of Chemistry , Tulane University , 6400 Freret Street , New Orleans , Louisiana 70118-5698 , United States
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19
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Neary MC, Quinlivan PJ, Parkin G. Zerovalent Nickel Compounds Supported by 1,2-Bis(diphenylphosphino)benzene: Synthesis, Structures, and Catalytic Properties. Inorg Chem 2017; 57:374-391. [DOI: 10.1021/acs.inorgchem.7b02636] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Michelle C. Neary
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Patrick J. Quinlivan
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Gerard Parkin
- Department of Chemistry, Columbia University, New York, New York 10027, United States
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20
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Wang J, Shi LX, Wang JY, Chen JX, Liu SH, Chen ZN. An unprecedented photochromic system with cis-oriented dithienyl-dithiolenes supported by metal chelation. Dalton Trans 2017; 46:2023-2029. [PMID: 28119960 DOI: 10.1039/c6dt04421b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
4,5-Bis(2-methyl-5-phenylthiophen-3-yl)-1,3-dithiol-2-one (L1o) was elaborately designed to afford dithienyl-dithiolene as a new photochromic ligand. We describe herein the preparation and characterization of unprecedented photochromic dithienyl-dithiolene complexes with cis-orientation of dithienylethene (DTE) stabilized by metal chelation instead of conventional cyclopentene. The treatment of L1o with sodium methoxide in methanol afforded a disodium salt of dithiolate dianion, which reacts with M(dppe)Cl2 (dppe = 1,2-bis(diphenylphosphino)ethane, M = Ni, Pd) to give neutral compounds M(dppe)(dithiolate) as established by X-ray crystallography. The reaction of L1o with NiCl2 in the presence of sodium methoxide allows the isolation of an anionic nickel(ii) bis(dithienyl-dithiolene) complex with photochemical inertness. In contrast, the corresponding reaction with ZnCl2 afforded a dianionic zinc(ii) complex chelated by two dianionic dithienyl-dithiolenes, which displays stepwise photocyclization upon irradiation with UV light at 312 nm as demonstrated experimentally and theoretically. Only when dithienyl-dithiolene behaves as a dicationic ligand instead of neutral or monoanionic species, it is possible to achieve reversible photochromism in the corresponding metal complexes.
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Affiliation(s)
- Jiang Wang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China. and Key Laboratory of Pesticide & Chemical Biology, College of Chemistry, Central China Normal University, Wuhan 430079, China.
| | - Lin-Xi Shi
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China.
| | - Jin-Yun Wang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China.
| | - Jin-Xiang Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China.
| | - Sheng-Hua Liu
- Key Laboratory of Pesticide & Chemical Biology, College of Chemistry, Central China Normal University, Wuhan 430079, China.
| | - Zhong-Ning Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China.
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21
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Mews NM, Berkefeld A, Hörner G, Schubert H. Controlling Near-Infrared Chromophore Electronic Properties through Metal–Ligand Orbital Alignment. J Am Chem Soc 2017; 139:2808-2815. [DOI: 10.1021/jacs.6b13085] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Nicole M. Mews
- Institut
für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Andreas Berkefeld
- Institut
für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Gerald Hörner
- Institut
für Chemie, Bioanorganische Chemie, TU Berlin, Straße
des 17. Juni 135, 10623 Berlin, Germany
| | - Hartmut Schubert
- Institut
für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
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22
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Hu H, Singh MP, Baghel GS, Dye GW, Gerlach DL, Vaid TP. Synthesis of 9,10-Dimethyl-2,3,6,7-Anthracenetetra(thioacetate) and Benzenepentathiol; Improved Syntheses of 1,2,4,5-Benzenetetra(thioacetate) and Benzenehexathiol. ChemistrySelect 2016. [DOI: 10.1002/slct.201600454] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Huaiyuan Hu
- Department of Chemistry; The University of Alabama; Tuscaloosa Alabama 35487
| | - Mayank Pratap Singh
- Department of Chemistry; The University of Alabama; Tuscaloosa Alabama 35487
| | - Garima Singh Baghel
- Department of Chemistry; The University of Alabama; Tuscaloosa Alabama 35487
| | - Gregory W. Dye
- Department of Chemistry; The University of Alabama; Tuscaloosa Alabama 35487
| | - Deidra L. Gerlach
- Department of Chemistry; The University of Alabama; Tuscaloosa Alabama 35487
| | - Thomas P. Vaid
- Department of Chemistry; The University of Alabama; Tuscaloosa Alabama 35487
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23
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Murata M, Kaji S, Nishimura H, Wakamiya A, Murata Y. Efficient Synthesis of One- and Two-Dimensional Multimetallic Gold-Bis(dithiolene) Complexes. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600595] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Michihisa Murata
- Institute for Chemical Research; Kyoto University; Uji 611-0011 Kyoto Japan
| | - Shoji Kaji
- Institute for Chemical Research; Kyoto University; Uji 611-0011 Kyoto Japan
| | - Hidetaka Nishimura
- Institute for Chemical Research; Kyoto University; Uji 611-0011 Kyoto Japan
| | - Atsushi Wakamiya
- Institute for Chemical Research; Kyoto University; Uji 611-0011 Kyoto Japan
| | - Yasujiro Murata
- Institute for Chemical Research; Kyoto University; Uji 611-0011 Kyoto Japan
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24
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Wrixon JD, Hayward JJ, Rawson JM. Phosphine Control of the Oxidative Addition Chemistry of Tetrathiocins to Palladium(0): Characterization of Mono-, Di-, and Hexanuclear Palladium(II) Dithiolate Complexes. Inorg Chem 2015; 54:9384-6. [DOI: 10.1021/acs.inorgchem.5b01555] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Justin D. Wrixon
- Department
of Chemistry and Biochemistry, University of Windsor, 401 Sunset
Avenue, Windsor, Ontario N9B3P4, Canada
| | - John J. Hayward
- Department
of Chemistry and Biochemistry, University of Windsor, 401 Sunset
Avenue, Windsor, Ontario N9B3P4, Canada
| | - Jeremy M. Rawson
- Department
of Chemistry and Biochemistry, University of Windsor, 401 Sunset
Avenue, Windsor, Ontario N9B3P4, Canada
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25
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Azizpoor Fard M, Willans MJ, Khalili Najafabadi B, Levchenko TI, Corrigan JF. Polydentate chalcogen reagents for the facile preparation of Pd2 and Pd4 complexes. Dalton Trans 2015; 44:8267-77. [PMID: 25851464 DOI: 10.1039/c5dt00197h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The silylated organochalcogen reagents 1,2-(Me3SiSCH2)2C6H4, and 1,2-(Me3SiSeCH2)2C6H4, were prepared from the corresponding organobromides and lithium trimethylsilanechalcogenolate Li[ESiMe3] (E = S, Se). They have been characterized by multinuclear NMR spectroscopy ((1)H, (13)C, (77)Se) and electrospray ionization mass spectrometry. and react under mild conditions with (1,3-bis(diphenylphosphino)propane)palladium(ii) chloride, [PdCl2(dppp)], to provide the dinuclear organochalcogenolate-bridged complexes [(dppp)2Pd2-μ-κ(2)S-{1,2-(SCH2)2C6H4}]X2, []X2 and [(dppp)2Pd2-μ-κ(2)Se-{1,2-(SeCH2)2C6H4}]X2, []X2 (X = Cl, Br) in good yield, respectively. Furthermore, the tetranuclear palladium complex [(dppp)4Pd4-μ-κ(4)S-{1,2,4,5-(SCH2)4C6H2}]X4, []X4 (X = Cl, Br) can be synthesized from the reaction of the tetrathiotetrasilane 1,2,4,5-(Me3SiSCH2)4C6H2, and [PdCl2(dppp)]. The structures of []X2, []X2 and []X4 were determined by single crystal X-ray diffraction methods. A variety of NMR experiments including two-dimensional homonuclear and heteronuclear correlated spectra were used to probe the solution behaviour of the dinuclear complexes in more detail. These complexes were further characterized by electrospray ionization (ESI) mass spectrometry, and for []X2 and []X2, UV-Vis absorption spectroscopy.
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Affiliation(s)
- Mahmood Azizpoor Fard
- Department of Chemistry, The University of Western Ontario, London, ON N6A 5B7, Canada.
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26
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Fei H, Cohen SM. Metalation of a Thiocatechol-Functionalized Zr(IV)-Based Metal–Organic Framework for Selective C–H Functionalization. J Am Chem Soc 2015; 137:2191-4. [DOI: 10.1021/ja5126885] [Citation(s) in RCA: 202] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Honghan Fei
- Department
of Chemistry and
Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
| | - Seth M. Cohen
- Department
of Chemistry and
Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
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27
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Liu B, Qiao W, Wang ZY. Colorless metallodithiolene oligomers and polymers with intense near- and mid-infrared absorption. RSC Adv 2015. [DOI: 10.1039/c4ra13039a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Reported herein are the syntheses and properties of a series of multi-nuclear metallodithiolene complex oligomers (5, 6 and 7) and a homologous polymer (8).
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Affiliation(s)
- Bo Liu
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Wenqiang Qiao
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Zhi Yuan Wang
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
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28
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Wrixon JD, Hayward JJ, Raza O, Rawson JM. Oxidative addition chemistry of tetrathiocines: synthesis, structures and properties of group 10 dithiolate complexes. Dalton Trans 2014; 43:2134-9. [DOI: 10.1039/c3dt52802b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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29
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Bouška M, Novák M, Dostál L, Růžička A, Mikysek T, Metelka R, Jambor R. Oxidative Addition of Diorgano Disulfides to Distannyne [{2,6-(Me2NCH2)2C6H3}Sn]2. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300907] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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30
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Wang C, Liu D, Lin W. Metal-organic frameworks as a tunable platform for designing functional molecular materials. J Am Chem Soc 2013; 135:13222-34. [PMID: 23944646 PMCID: PMC3800686 DOI: 10.1021/ja308229p] [Citation(s) in RCA: 557] [Impact Index Per Article: 50.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Metal-organic frameworks (MOFs), also known as coordination polymers, represent an interesting class of crystalline molecular materials that are synthesized by combining metal-connecting points and bridging ligands. The modular nature of and mild conditions for MOF synthesis have permitted the rational structural design of numerous MOFs and the incorporation of various functionalities via constituent building blocks. The resulting designer MOFs have shown promise for applications in a number of areas, including gas storage/separation, nonlinear optics/ferroelectricity, catalysis, energy conversion/storage, chemical sensing, biomedical imaging, and drug delivery. The structure-property relationships of MOFs can also be readily established by taking advantage of the knowledge of their detailed atomic structures, which enables fine-tuning of their functionalities for desired applications. Through the combination of molecular synthesis and crystal engineering, MOFs thus present an unprecedented opportunity for the rational and precise design of functional materials.
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Affiliation(s)
- Cheng Wang
- Department of Chemistry, University of Chicago, 929 E. 57 Street, Chicago, IL 60637
- Department of Chemistry, CB#3290, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Demin Liu
- Department of Chemistry, University of Chicago, 929 E. 57 Street, Chicago, IL 60637
| | - Wenbin Lin
- Department of Chemistry, University of Chicago, 929 E. 57 Street, Chicago, IL 60637
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31
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Hameury S, Kayser L, Pattacini R, Rogez G, Wernsdorfer W, Braunstein P. Synthesis of cubane-type Ni(ii) complexes from pyridyl-alcohol ligands; their single-molecule magnet behaviour. Dalton Trans 2013; 42:5013-24. [DOI: 10.1039/c3dt32869d] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Lindsay S, Lo SK, Maguire OR, Bill E, Probert MR, Sproules S, Hess CR. Syntheses and Electronic Structure of Bimetallic Complexes Containing a Flexible Redox-Active Bridging Ligand. Inorg Chem 2012; 52:898-909. [DOI: 10.1021/ic302087f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Stacey Lindsay
- Department of Chemistry, University of Durham, South Rd, Durham, DH1 3LE, United
Kingdom
| | - Siu K. Lo
- Department of Chemistry, University of Durham, South Rd, Durham, DH1 3LE, United
Kingdom
| | - Oliver R. Maguire
- Department of Chemistry, University of Durham, South Rd, Durham, DH1 3LE, United
Kingdom
| | - Eckhard Bill
- Max-Planck-Institut für Chemische Energiekonversion, Stiftstrasse
34-36, D-45470 Mülheim an der Ruhr, Germany
| | - Michael R. Probert
- Department of Chemistry, University of Durham, South Rd, Durham, DH1 3LE, United
Kingdom
| | - Stephen Sproules
- School of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester
M13 9PL, United Kingdom
| | - Corinna R. Hess
- Department of Chemistry, University of Durham, South Rd, Durham, DH1 3LE, United
Kingdom
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33
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Abstract
Previously unknown benzenepolyselenols have been synthesized and isolated in their acetyl-protected form. The two molecules 1,3,5-tris(acetylseleno)benzene and 1,2,4,5-tetrakis(acetylseleno)benzene were synthesized by the reductive dealkylation in Na/NH(3) of 1,3,5-tris(tert-butylseleno)benzene and 1,2,4,5-tetrakis(tert-butylseleno)benzene, respectively. Hexakis(tert-butylseleno)benzene was also synthesized and structurally characterized by single-crystal X-ray diffraction, but it was not possible to isolate hexakis(acetylseleno)benzene. The synthetic methodology is likely to be useful in the synthesis of other areneselenols.
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Affiliation(s)
- Dayna L Turner
- Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487, USA
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