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Amadi CK, Karimpour T, Jafari M, Peng Z, Van Gerven D, Brune V, Hartl F, Siaj M, Mathur S. Synthesis and theoretical study of a mixed-ligand indium(III) complex for fabrication of β-In 2S 3 thin films via chemical vapor deposition. Dalton Trans 2024; 53:9874-9886. [PMID: 38805202 DOI: 10.1039/d4dt00394b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Two new heteroleptic indium aminothiolate compounds [InClSC2H4N(Me)SC2H4]3[1] and [InSC2H4N(Me)SC2H4(C8H5F3NO)] [2] were synthesized by in situ salt metathesis reaction involving indium trichloride, aminothiol, and N,O-β-heteroarylalkenol ligands. The complexes were subsequently purified and thoroughly characterized by nuclear magnetic resonance (NMR) analysis, elemental studies, mass spectroscopy, and X-ray diffraction single crystal analysis that showed a trigonal bipyramidal coordination of In(III) in both complexes. Thermogravimetric analysis of [1] revealed a multistep decomposition pathway and the formation of In2S3 at 350 °C, which differed from the pattern of [2] due to the lower thermal stability of [1]. Compound [2] exhibited a three-step decomposition process, resulting in the formation of In2S3 at 300 °C. The Chemical Vapor Deposition (CVD) experiment involving compound [2] was conducted on the FTO substrate, resulting in the production of singular-phase In2S3 deposits. A comprehensive characterization of these deposits, including crystal structure analysis via X-ray diffraction (XRD), and surface topography examination through scanning electron microscopy (SEM) has been completed. The presence of In-S units was also supported by the Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and energy dispersive spectroscopy (EDS) of the as-deposited films. Moreover, the electronic structure and thermal properties of compound [2] were investigated through DFT calculations. Electron density localization analysis revealed that the highest occupied molecular orbital (HOMO) exhibited dense concentration at the aminothiolate moiety of the complex, while the lowest unoccupied molecular orbital (LUMO) predominantly resided at the N,O-β-heteroarylalkenolate ligand. Furthermore, our computational investigation has validated the formation of indium sulfide by elucidating an intermediate state, effectively identified through EI-MS analysis, as one of the plausible pathways for obtaining In2S3. This intermediate state comprises the aminothiolate ligand (LNS) coordinated with indium metal.
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Affiliation(s)
- Chijioke Kingsley Amadi
- University of Cologne, Department of Chemistry, Institute of Inorganic Chemistry, Greinstr. 6, 50939 Cologne, Germany.
| | - Touraj Karimpour
- University of Cologne, Department of Chemistry, Institute of Inorganic Chemistry, Greinstr. 6, 50939 Cologne, Germany.
| | - Maziar Jafari
- Université du Québec à Montréal, Department of Chemistry and Biochemistry, Montréal, QC H3C 3P8, Canada
| | - Zhiyuan Peng
- Université du Québec à Montréal, Department of Chemistry and Biochemistry, Montréal, QC H3C 3P8, Canada
| | - David Van Gerven
- University of Cologne, Department of Chemistry, Institute of Inorganic Chemistry, Greinstr. 6, 50939 Cologne, Germany.
| | - Veronika Brune
- University of Cologne, Department of Chemistry, Institute of Inorganic Chemistry, Greinstr. 6, 50939 Cologne, Germany.
| | - Fabian Hartl
- University of Cologne, Department of Chemistry, Institute of Inorganic Chemistry, Greinstr. 6, 50939 Cologne, Germany.
| | - Mohamed Siaj
- Université du Québec à Montréal, Department of Chemistry and Biochemistry, Montréal, QC H3C 3P8, Canada
| | - Sanjay Mathur
- University of Cologne, Department of Chemistry, Institute of Inorganic Chemistry, Greinstr. 6, 50939 Cologne, Germany.
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2
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Das S, Buschermöhle J, Zant DW, Schmidtmann M, van der Vlugt JI. Selective Manipulation of Well-Defined Trinuclear Pd(II)-Complexes. Chemistry 2024; 30:e202400044. [PMID: 38334955 DOI: 10.1002/chem.202400044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 02/09/2024] [Accepted: 02/09/2024] [Indexed: 02/10/2024]
Abstract
Several strategies are available to design well-defined multimetallic molecular entities bearing functional ligands. Substoichiometric exchange reactions in the coordination sphere of pre-existing multinuclear precursors are relatively underexploited in this context. Palladium(II) acetate is not a mononuclear compound in the solid state but rather exists as a trimer, i. e. [Pd3(OAc)6]. Although this material is ubiquitously used to synthesize mononuclear Pd species, it may principally also lend itself to selective exchange of some of the edge-sharing acetate units in its triangular motif, whilst keeping the overall multinuclear architecture intact. Strikingly, little is known about the controlled manipulation and substoichiometric substitution chemistry of this well-defined conglomerate. We herein conclusively demonstrate that, for the first time, the targeted exchange of two or four acetate units from the Pd3(acetate)6 platform is possible, thereby installing either one or two new tridentate ligands onto this trinuclear architecture. Follow-up exchange and substitution chemistry is available without disrupting the multimetallic nature of the core structure. New complexes 2-7 are all conclusively characterized using multinuclear NMR spectroscopy, UV-vis and IR spectroscopy as well as X-ray diffraction analysis.
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Affiliation(s)
- Siuli Das
- Bioinspired Coordination Chemistry and Homogeneous Catalysis Group, Institute of Chemistry, Carl von Ossietzky University Oldenburg, Carl-von-Ossietzky-Straße 9-11, 26129, Oldenburg, Germany
| | - Julia Buschermöhle
- Bioinspired Coordination Chemistry and Homogeneous Catalysis Group, Institute of Chemistry, Carl von Ossietzky University Oldenburg, Carl-von-Ossietzky-Straße 9-11, 26129, Oldenburg, Germany
| | - Dirk W Zant
- van 't Hoff Institute for Molecular Sciences, University of Amsterdam, the, Netherlands
| | - M Schmidtmann
- Bioinspired Coordination Chemistry and Homogeneous Catalysis Group, Institute of Chemistry, Carl von Ossietzky University Oldenburg, Carl-von-Ossietzky-Straße 9-11, 26129, Oldenburg, Germany
| | - Jarl Ivar van der Vlugt
- Bioinspired Coordination Chemistry and Homogeneous Catalysis Group, Institute of Chemistry, Carl von Ossietzky University Oldenburg, Carl-von-Ossietzky-Straße 9-11, 26129, Oldenburg, Germany
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3
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Effect of crystal packing on charge transfer in the heteroleptic gallium(III) complex. Russ Chem Bull 2023. [DOI: 10.1007/s11172-023-3724-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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4
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Khan FF, Bera SK, Dey S, Lahiri GK. Redox activity as a tool for bond activations and functionalizations. INORGANIC CHEMISTRY IN INDIA 2023. [DOI: 10.1016/bs.adioch.2022.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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5
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Charge Transfer Chromophores Derived from 3d-Row Transition Metal Complexes. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238175. [PMID: 36500270 PMCID: PMC9736222 DOI: 10.3390/molecules27238175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 11/18/2022] [Accepted: 11/20/2022] [Indexed: 11/25/2022]
Abstract
A series of new charge transfer (CT) chromophores of "α-diimine-MII-catecholate" type (where M is 3d-row transition metals-Cu, Ni, Co) were derived from 4,4'-di-tert-butyl-2,2'-bipyridyl and 3,6-di-tert-butyl-o-benzoquinone (3,6-DTBQ) in accordance with three modified synthetic approaches, which provide high yields of products. A square-planar molecular structure is inherent for monomeric [CuII(3,6-Cat)(bipytBu)]∙THF (1) and NiII(3,6-Cat)(bipytBu) (2) chromophores, while dimeric complex [CoII(3,6-Cat)(bipytBu)]2∙toluene (3) units two substantially distorted heteroleptic D-MII-A (where D, M, A are donor, metal and acceptor, respectively) parts through a donation of oxygen atoms from catecholate dianions. Chromophores 1-3 undergo an effective photoinduced intramolecular charge transfer (λ = 500-715 nm, extinction coefficient up to 104 M-1·cm-1) with a concomitant generation of a less polar excited species, the energy of which is a finely sensitive towards solvent polarity, ensuring a pronounced negative solvatochromic effect. Special attention was paid to energetic characteristics for CT and interacting HOMO/LUMO orbitals that were explored by a synergy of UV-vis-NIR spectroscopy, cyclic voltammetry, and DFT study. The current work sheds light on the dependence of CT peculiarities on the nature of metal centers from various groups of the periodic law. Moreover, the "α-diimine-MII-catecholate" CT chromophores on the base of "late" transition elements with differences in d-level's electronic structure were compared for the first time.
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6
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Molecular and Electronic Structures, Spectra, Electrochemistry and Anti‐bacterial Efficacy of Novel Heterocyclic Hydrazones of Phenanthrenequinone and Their Nickel(II) Complexes. ChemistrySelect 2022. [DOI: 10.1002/slct.202202151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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7
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Molecular and electronic structures of paramagnetic gallium complexes with differently charged o-quinone ligands. Russ Chem Bull 2022. [DOI: 10.1007/s11172-022-3550-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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8
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Das A, Schleinitz J, Karmazin L, Vincent B, Le Breton N, Rogez G, Guenet A, Choua S, Grimaud L, Desage‐El Murr M. A Single Bioinspired Hexameric Nickel Catechol–Alloxazine Catalyst Combines Metal and Radical Mechanisms for Alkene Hydrosilylation. Chemistry 2022; 28:e202200596. [DOI: 10.1002/chem.202200596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Indexed: 11/12/2022]
Affiliation(s)
- Agnideep Das
- Université de Strasbourg Institut de Chimie, CNRS UMR7177 67000 Strasbourg France
| | - Jules Schleinitz
- Laboratoire des biomolécules LBM, Chemistry Department École normale supérieure PSL University Sorbonne Université, CNRS 75005 Paris France
| | - Lydia Karmazin
- Université de Strasbourg Institut de Chimie, CNRS UMR7177 67000 Strasbourg France
| | - Bruno Vincent
- Université de Strasbourg Institut de Chimie, CNRS UMR7177 67000 Strasbourg France
| | - Nolwenn Le Breton
- Université de Strasbourg Institut de Chimie, CNRS UMR7177 67000 Strasbourg France
| | - Guillaume Rogez
- Institut de Physique et Chimie des Matériaux de Strasbourg Université de Strasbourg, CNRS, UMR 7504 67000 Strasbourg France
| | - Aurélie Guenet
- Université de Strasbourg Institut de Chimie, CNRS UMR7177 67000 Strasbourg France
| | - Sylvie Choua
- Université de Strasbourg Institut de Chimie, CNRS UMR7177 67000 Strasbourg France
| | - Laurence Grimaud
- Laboratoire des biomolécules LBM, Chemistry Department École normale supérieure PSL University Sorbonne Université, CNRS 75005 Paris France
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9
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Martyanov K, Kuropatov V, Rumyantcev R, Cherkasov V. Metallocomplexes, exhibiting catecholate binding mode for o-quinone, annulated with dithiete cycle. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120604] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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10
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Pashanova KI, Bitkina VO, Yakushev IA, Arsenyev MV, Piskunov AV. Square-Planar Heteroleptic Complexes of α-Diimine-Ni II-Catecholate Type: Intramolecular Ligand-to-Ligand Charge Transfer. Molecules 2021; 26:4622. [PMID: 34361775 PMCID: PMC8347615 DOI: 10.3390/molecules26154622] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/26/2021] [Accepted: 07/27/2021] [Indexed: 12/05/2022] Open
Abstract
Two heteroleptic NiII complexes combined the redox-active catecholate and 2,2'- bipyridine ligand platforms were synthesized to observe a photoinduced intramolecular ligand-to-ligand charge transfer (LL'CT, HOMOcatecholate → LUMOα-diimine). A molecular design of compound [NiII(3,6-Cat)(bipy)]∙CH3CN (1) on the base of bulky 3,6-di-tert-butyl-o-benzoquinone (3,6-DTBQ) was an annelation of the ligand with an electron donor glycol fragment, producing derivative [NiII(3,6-Catgly)(bipy)]∙CH2Cl2 (2), in order to influence the energy of LL'CT transition. A substantial longwave shift of the absorption peak was observed in the UV-Vis-NIR spectra of 2 compared with those in 1. In addition, the studied NiII derivatives demonstrated a pronounced negative solvatochromism, which was established using a broad set of solvents. The molecular geometry of both compounds can be ascribed as an insignificantly distorted square-planar type, and the π-π intermolecular stacking of the neighboring α-diimines is realized in a crystal packing. There is a lamellar crystal structure for complex 1, whereas the perpendicular T-motifs with the inter-stacks attractive π-π interactions form the packing of complex 2. The redox-active nature of ligand systems was clearly shown through the electrochemical study: a quasi-reversible one-electron reduction of 2,2'-bipyridine and two reversible successive one-electron oxidative conversations ("catecholate dianion-o-benzosemiquinonato radical anion-neutral o-benzoquinone") were detected.
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Affiliation(s)
- Kira I. Pashanova
- Laboratory of Metal Complexes with Redox-Active Ligands, G.A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 49 Tropinina Street, 603137 Nizhny Novgorod, Russia; (K.I.P.); (V.O.B.); (M.V.A.)
| | - Vladlena O. Bitkina
- Laboratory of Metal Complexes with Redox-Active Ligands, G.A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 49 Tropinina Street, 603137 Nizhny Novgorod, Russia; (K.I.P.); (V.O.B.); (M.V.A.)
| | - Ilya A. Yakushev
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninski Prospect, 119991 Moscow, Russia;
| | - Maxim V. Arsenyev
- Laboratory of Metal Complexes with Redox-Active Ligands, G.A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 49 Tropinina Street, 603137 Nizhny Novgorod, Russia; (K.I.P.); (V.O.B.); (M.V.A.)
| | - Alexandr V. Piskunov
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninski Prospect, 119991 Moscow, Russia;
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11
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de Zwart FJ, Reus B, Laporte AAH, Sinha V, de Bruin B. Metrical Oxidation States of 1,4-Diazadiene-Derived Ligands. Inorg Chem 2021; 60:3274-3281. [PMID: 33587616 PMCID: PMC8023656 DOI: 10.1021/acs.inorgchem.0c03685] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
The
conventional method of assigning formal oxidation states (FOSs)
to metals and ligands is an important tool for understanding and predicting
the chemical reactivity, in particular, in catalysis research. For
complexes containing redox-noninnocent ligands, the oxidation state
of the ligand can be ambiguous (i.e., their spectroscopic oxidation
state can differ from the FOS) and thus frustrates the assignment
of the oxidation state of the metal. A quantitative correlation between
the empirical metric data of redox-active
ligands and their oxidation states using a metrical oxidation state
(MOS) model has been developed for catecholate- and amidophenoxide-derived
ligands by Brown. In the present work, we present a MOS model for
1,4-diazabutadiene (DADn) ligands. This
model is based on a similar approach as reported by Brown, correlating
the intra-ligand bond lengths of the DADn moiety in a quantitative manner with the MOS using geometrical information
from X-ray structures in the Cambridge Crystallographic Data Center
(CCDC) database. However, an accurate determination of the MOS of
these ligands turned out to be dependent on the coordination mode
of the DAD2– moiety, which can adopt both a planar
κ2-N2-geometry and a
η4-N2C2 π-coordination mode in (transition) metal complexes
in its doubly reduced, dianionic enediamide oxidation state. A reliable
MOS model was developed taking the intrinsic differences in intra-ligand
bond distances between these coordination modes of the DAD2– ligand into account. Three different models were defined and tested
using different geometric parameters (C=C → M distance,
M–N–C angle, and M–N–C–C torsion
angle) to describe the C=C backbone coordination with the metal
in the η4-N2-C2 π-coordination mode of the DAD2– ligand. Statistical analysis revealed that the C=C →
M distance best describes the η4-N2-C2 coordination mode using
a cutoff value of 2.46 Å for π-coordination. The developed
MOS model was used to validate the oxidation state assignment of elements
not contained within the training set (Sr, Yb, and Ho), thus demonstrating
the applicability of the MOS model to a wide range of complexes. Chromium
complexes with complex electronic structures were also shown to be
accurately described by MOS analysis. Furthermore, it is shown that
a combination of MOS analysis and FOD calculations provides an inexpensive
method to gain insight into the electronic structure of singlet spin
state (S = 0) [M(trop2dad)] transition-metal complexes
showing (potential) singlet biradical character. Assigning oxidation states to metals
and ligands is an important
tool for understanding and predicting the chemical reactivity. For
complexes containing redox-noninnocent ligands, the oxidation state
of the ligand can be ambiguous. We present a metrical oxidation state
model for 1,4-diazabutadiene ligands, correlating the intra-ligand
bond lengths with the oxidation state using information from X-ray
structures. This model accounts for the difference in bond length
distances between the different coordination modes of the fully reduced
ligand.
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Affiliation(s)
- Felix J de Zwart
- Van 't Hoff Institute for Molecular Sciences, University of Amsterdam, 1098 XH Amsterdam, The Netherlands
| | - Bente Reus
- Van 't Hoff Institute for Molecular Sciences, University of Amsterdam, 1098 XH Amsterdam, The Netherlands
| | - Annechien A H Laporte
- Van 't Hoff Institute for Molecular Sciences, University of Amsterdam, 1098 XH Amsterdam, The Netherlands
| | - Vivek Sinha
- Van 't Hoff Institute for Molecular Sciences, University of Amsterdam, 1098 XH Amsterdam, The Netherlands
| | - Bas de Bruin
- Van 't Hoff Institute for Molecular Sciences, University of Amsterdam, 1098 XH Amsterdam, The Netherlands
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12
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Das A, Jobelius H, Schleinitz J, Gamboa-Ramirez S, Creste G, Kervern G, Raya J, Le Breton N, Guénet A, Boubegtiten-Fezoua Z, Grimaud L, Orio M, Rogez G, Hellwig P, Choua S, Ferlay S, Desage-El Murr M. A hybrid bioinspired catechol-alloxazine triangular nickel complex stabilizing protons and electrons. Inorg Chem Front 2021. [DOI: 10.1039/d1qi01131f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A new class of redox-active ligands merging catechol and alloxazine structures is reported. A trimetallic triangular complex is formed upon complexation to nickel.
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Affiliation(s)
- Agnideep Das
- Université de Strasbourg, Institut de Chimie, CNRS UMR7177, 67000 Strasbourg, France
| | - Hannah Jobelius
- Université de Strasbourg, Institut de Chimie, CNRS UMR7177, 67000 Strasbourg, France
- Université de Strasbourg, Chimie de la Matière Complexe, CNRS UMR7140, 67000 Strasbourg, France
| | - Jules Schleinitz
- Laboratoire des biomolécules, LBM, Département de chimie, École normale supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
| | | | - Geordie Creste
- Université de Strasbourg, Institut de Chimie, CNRS UMR7177, 67000 Strasbourg, France
| | - Gwendal Kervern
- Université de Lorraine, Faculté des Sciences, boulevard des Aiguillettes, CNRS UMR7036, BP 70239, 54506 Vandoeuvre-les-Nancy Cedex, France
| | - Jesus Raya
- Université de Strasbourg, Institut de Chimie, CNRS UMR7177, 67000 Strasbourg, France
| | - Nolwenn Le Breton
- Université de Strasbourg, Institut de Chimie, CNRS UMR7177, 67000 Strasbourg, France
| | - Aurélie Guénet
- Université de Strasbourg, Institut de Chimie, CNRS UMR7177, 67000 Strasbourg, France
| | | | - Laurence Grimaud
- Laboratoire des biomolécules, LBM, Département de chimie, École normale supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
| | - Maylis Orio
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Guillaume Rogez
- Institut de Physique et Chimie des Matériaux de Strasbourg, Université de Strasbourg, CNRS, UMR 7504, F-67000 Strasbourg, France
| | - Petra Hellwig
- Université de Strasbourg, Chimie de la Matière Complexe, CNRS UMR7140, 67000 Strasbourg, France
| | - Sylvie Choua
- Université de Strasbourg, Institut de Chimie, CNRS UMR7177, 67000 Strasbourg, France
| | - Sylvie Ferlay
- Université de Strasbourg, Chimie de la Matière Complexe, CNRS UMR7140, 67000 Strasbourg, France
| | - Marine Desage-El Murr
- Université de Strasbourg, Institut de Chimie, CNRS UMR7177, 67000 Strasbourg, France
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13
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Tahara K, Ashihara Y, Ikeda T, Kadoya T, Fujisawa JI, Ozawa Y, Tajima H, Toyoda N, Haruyama Y, Abe M. Immobilizing a π-Conjugated Catecholato Framework on Surfaces of SiO 2 Insulator Films via a One-Atom Anchor of a Platinum Metal Center to Modulate Organic Transistor Performance. Inorg Chem 2020; 59:17945-17957. [PMID: 33169615 DOI: 10.1021/acs.inorgchem.0c02163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Chemical modification of insulating material surfaces is an important methodology to improve the performance of organic field-effect transistors (OFETs). However, few redox-active self-assembled monolayers (SAMs) have been constructed on gate insulator film surfaces, in contrast to the numerous SAMs formed on many types of conducting electrodes. In this study, we report a new approach to introduce a π-conjugated organic fragment in close proximity to an insulating material surface via a transition metal center acting as a one-atom anchor. On the basis of the reported coordination chemistry of a catecholato complex of Pt(II) in solution, we demonstrate that ligand exchange can occur on an insulating material surface, affording SAMs on the SiO2 surface derived from a newly synthesized Pt(II) complex containing a benzothienobenzothiophene (BTBT) framework in the catecholato ligand. The resultant SAMs were characterized in detail by water contact angle measurements, X-ray photoelectron spectroscopy, atomic force microscopy, and cyclic voltammetry. The SAMs served as good scaffolds of π-conjugated pillars for forming thin films of a well-known organic semiconductor C8-BTBT (2,7-dioctyl[1]benzothieno[3,2-b][1]benzothiophene), accompanied by the engagements of the C8-BTBT molecules with the SAMs containing the common BTBT framework at the first layer on SiO2. OFETs containing the SAMs displayed improved performance in terms of hole mobility and onset voltage, presumably because of the unique interfacial structure between the organic semiconducting and inorganic insulating layers. These findings provide important insight into creating new elaborate interfaces through installing coordination chemistry in solution to solid surfaces, as well as OFET design by considering the compatibility between SAMs and organic semiconductors.
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Affiliation(s)
- Keishiro Tahara
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 6781297, Japan
| | - Yuya Ashihara
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 6781297, Japan
| | - Takashi Ikeda
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 6781297, Japan
| | - Tomofumi Kadoya
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 6781297, Japan
| | - Jun-Ichi Fujisawa
- Graduate School of Science and Technology, Gunma University, 1-5-1, Tenjin, Kiryu, Gunma 3768515, Japan
| | - Yoshiki Ozawa
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 6781297, Japan
| | - Hiroyuki Tajima
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 6781297, Japan
| | - Noriaki Toyoda
- Graduate School of Engineering, University of Hyogo, 2167, Shosha, Himeji, Hyogo 6712280, Japan
| | - Yuichi Haruyama
- Laboratory of Advanced Science and Technology for Industry, University of Hyogo, 3-1-2 Koto, Kamigori, Ako, Hyogo 6781205, Japan
| | - Masaaki Abe
- Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 6781297, Japan
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14
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Mu G, Jiang C, Teets TS. Dinuclear Complexes of Flexidentate Pyridine-Substituted Formazanate Ligands. Chemistry 2020; 26:11877-11886. [PMID: 32608094 DOI: 10.1002/chem.202002351] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 06/25/2020] [Indexed: 12/12/2022]
Abstract
The utility of flexidentate pyridyl-substituted formazanate ligands for assembling dinuclear coordination complexes with iridium(III) and/or platinum(II) building blocks is demonstrated herein. The dinuclear complexes are prepared either via a stepwise strategy, adding one metal unit at a time, or via one-pot self-assembly. Eight of the new complexes, including both mononuclear precursors and dinuclear products, are structurally characterized by single-crystal X-ray diffraction and NMR spectroscopy, revealing several distinct binding modes of the formazanates. All complexes are characterized by UV/Vis absorption spectroscopy and cyclic voltammetry. The frontier orbitals are primarily localized on the formazanate ligand, and a characteristic, intense formazanate-centered π→π* absorption band is observed in the absorption spectra.
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Affiliation(s)
- Ge Mu
- Department of Chemistry, University of Houston, Lamar Fleming Jr. Building, 3585 Cullen Blvd., Houston, 77204-5003, USA
| | - Chenggang Jiang
- Department of Chemistry, University of Houston, Lamar Fleming Jr. Building, 3585 Cullen Blvd., Houston, 77204-5003, USA
| | - Thomas S Teets
- Department of Chemistry, University of Houston, Lamar Fleming Jr. Building, 3585 Cullen Blvd., Houston, 77204-5003, USA
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15
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Brahim S, Brahim H, Humbel S, Rahmouni A. Computational studies of Ni(II) photosensitizers complexes containing 1,1′-bis(diphenylphosphino)ferrocene and dithio ligands. CAN J CHEM 2020. [DOI: 10.1139/cjc-2019-0168] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
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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Affiliation(s)
- Sefia Brahim
- Modeling and Calculation Methods Laboratory, University of Saida, Saida 20002, Algeria
| | - Houari Brahim
- Department of Chemistry, University of Saida, Saida 20000, Algeria
| | - Stéphane Humbel
- Aix Marseille Université, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Ali Rahmouni
- Modeling and Calculation Methods Laboratory, University of Saida, Saida 20002, Algeria
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16
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Kazakov GG, Druzhkov NO, Cherkasov VK. Iminoquinones and Diimines, N-Hetero Analogues of 9,10-Phenanthrenequinone, in Coordination Chemistry. RUSS J COORD CHEM+ 2020. [DOI: 10.1134/s1070328420030033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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17
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Sobottka S, Nößler M, Ostericher AL, Hermann G, Subat NZ, Beerhues J, Behr‐van der Meer M, Suntrup L, Albold U, Hohloch S, Tremblay JC, Sarkar B. Tuning Pt II -Based Donor-Acceptor Systems through Ligand Design: Effects on Frontier Orbitals, Redox Potentials, UV/Vis/NIR Absorptions, Electrochromism, and Photocatalysis. Chemistry 2020; 26:1314-1327. [PMID: 31778594 PMCID: PMC7027812 DOI: 10.1002/chem.201903700] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 11/07/2019] [Indexed: 12/16/2022]
Abstract
Asymmetric platinum donor-acceptor complexes [(pimp)Pt(Q2- )] are presented in this work, in which pimp=[(2,4,6-trimethylphenylimino)methyl]pyridine and Q2- =catecholate-type donor ligands. The properties of the complexes are evaluated as a function of the donor ligands, and correlations are drawn among electrochemical, optical, and theoretical data. Special focus has been put on the spectroelectrochemical investigation of the complexes featuring sulfonyl-substituted phenylendiamide ligands, which show redox-induced linkage isomerism upon oxidation. Time-dependent density functional theory (TD-DFT) as well as electron flux density analysis have been employed to rationalize the optical spectra of the complexes and their reactivity. Compound 1 ([(pimp)Pt(Q2- )] with Q2- =3,5-di-tert-butylcatecholate) was shown to be an efficient photosensitizer for molecular oxygen and was subsequently employed in photochemical cross-dehydrogenative coupling (CDC) reactions. The results thus display new avenues for donor-acceptor systems, including their role as photocatalysts for organic transformations, and the possibility to introduce redox-induced linkage isomerism in these compounds through the use of sulfonamide substituents on the donor ligands.
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Affiliation(s)
- Sebastian Sobottka
- Institut für Chemie und BiochemieAnorganische ChemieFreie Universität BerlinFabeckstrasse 34–3614195BerlinGermany
| | - Maite Nößler
- Institut für Chemie und BiochemieAnorganische ChemieFreie Universität BerlinFabeckstrasse 34–3614195BerlinGermany
| | - Andrew L. Ostericher
- Institut für Chemie und BiochemieAnorganische ChemieFreie Universität BerlinFabeckstrasse 34–3614195BerlinGermany
- Current address: Department of Chemistry and BiochemistryUniversity of California San Diego9500 Gilman DriveLa JollaCA92093USA
| | - Gunter Hermann
- QoD Technologies GmbHc/o Freie Universität BerlinAltensteinstrasse 4014195BerlinGermany
| | - Noah Z. Subat
- Institut für Chemie und BiochemieAnorganische ChemieFreie Universität BerlinFabeckstrasse 34–3614195BerlinGermany
| | - Julia Beerhues
- Institut für Chemie und BiochemieAnorganische ChemieFreie Universität BerlinFabeckstrasse 34–3614195BerlinGermany
| | - Margarethe Behr‐van der Meer
- Institut für Chemie und BiochemieAnorganische ChemieFreie Universität BerlinFabeckstrasse 34–3614195BerlinGermany
| | - Lisa Suntrup
- Institut für Chemie und BiochemieAnorganische ChemieFreie Universität BerlinFabeckstrasse 34–3614195BerlinGermany
- Current address: Department of ChemistryUniversity of Massachusetts Boston100 Morrissey BoulevardBostonMA02125USA
| | - Uta Albold
- Institut für Chemie und BiochemieAnorganische ChemieFreie Universität BerlinFabeckstrasse 34–3614195BerlinGermany
| | - Stephan Hohloch
- Institut für Chemie und BiochemieAnorganische ChemieFreie Universität BerlinFabeckstrasse 34–3614195BerlinGermany
- Current address: University of PaderbornWarburger Strasse 10033098PaderbornGermany
| | - Jean Christophe Tremblay
- Laboratoire de physique et chimie théoriquesCNRS/Université de Lorraine—UMR 70191 bd Arago57070MetzFrance
| | - Biprajit Sarkar
- Institut für Chemie und BiochemieAnorganische ChemieFreie Universität BerlinFabeckstrasse 34–3614195BerlinGermany
- Institut für Anorganische ChemieUniversität StuttgartPfaffenwaldring 5570569StuttgartGermany
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18
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Colston KJ, Dille SA, Mogesa B, Astashkin AV, Brant JA, Zeller M, Basu P. Design, Synthesis, and Structure of Copper Dithione Complexes: Redox‐Dependent Charge Transfer. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201901222] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Kyle J. Colston
- Department of Chemistry and Chemical Biology Indiana University‐Purdue University Indianapolis 402 N. Blackford Street 46202 Indianapolis IN USA
| | - Sara A. Dille
- Department of Chemistry and Chemical Biology Indiana University‐Purdue University Indianapolis 402 N. Blackford Street 46202 Indianapolis IN USA
| | - Benjamin Mogesa
- Department of Chemistry and Biochemistry Duquesne University 15282 Pittsburgh PA USA
| | - Andrei V. Astashkin
- Department of Chemistry and Biochemistry University of Arizona 85721 Tucson AZ USA
| | - Jacilynn A. Brant
- The Air Force Research Laboratory Aerospace Systems Directorate 1950 Fifth Street, Building 18 45433 Wright‐Patterson Air Force Base Ohio USA
| | - Matthias Zeller
- Department of Chemistry Purdue University 560 Oval Drive 47907 West Lafayette IN USA
| | - Partha Basu
- Department of Chemistry and Chemical Biology Indiana University‐Purdue University Indianapolis 402 N. Blackford Street 46202 Indianapolis IN USA
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19
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The complex formation of indium(III) acetate with alkyl-substituted 3,3′-bis(dipyrromethene) ligands. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.119146] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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20
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Solubility of thermostable alkyl phosphate ester copper complexes in poly(alkyl methacrylate) for near-infrared-absorbing dyes. Polym J 2019. [DOI: 10.1038/s41428-019-0255-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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21
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Panda S, Ansari MA, Mandal A, Lahiri GK. Near‐IR Absorbing Ruthenium Complexes of Non‐Innocent 6,12‐Di(pyridin‐2‐yl)indolo[3,2‐
b
]carbazole: Variation as a Function of Co‐Ligands. Chem Asian J 2019; 14:4631-4640. [DOI: 10.1002/asia.201900719] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 06/24/2019] [Indexed: 01/06/2023]
Affiliation(s)
- Sanjib Panda
- Department of ChemistryIndian Institute of Technology Bombay Powai Mumbai- 400076 India
| | - Md Asif Ansari
- Department of ChemistryIndian Institute of Technology Bombay Powai Mumbai- 400076 India
| | - Abhishek Mandal
- Department of ChemistryIndian Institute of Technology Bombay Powai Mumbai- 400076 India
| | - Goutam Kumar Lahiri
- Department of ChemistryIndian Institute of Technology Bombay Powai Mumbai- 400076 India
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22
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McKearney D, Zhou W, Zellman C, Williams VE, Leznoff DB. Facile tuning of strong near-IR absorption wavelengths in manganese(iii) phthalocyanines via axial ligand exchange. Chem Commun (Camb) 2019; 55:6696-6699. [PMID: 31062005 DOI: 10.1039/c9cc02151e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The facile tuning of near-infrared absorption of manganese(iii) phthalocyanines was accomplished by changing the nature and number of bound axial ligands. For a series of axial ligands on manganese α-octabutoxyphthalocyanine and α-octakis-(isopropylthio)phthalocyanine, the electron density on the metal and its displacement from the Pc-ring plane both control the position of the complex's Q-band. For these two macrocycles, this strong absorption band could be tuned over a λmax range of 815-948 nm by axial ligand exchange.
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Affiliation(s)
- Declan McKearney
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC, Canada V5A1S6.
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23
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Yamada S, Matsumoto T, Chang HC. Impact of Group 10 Metals on the Solvent-Induced Disproportionation of o-Semiquinonato Complexes. Chemistry 2019; 25:8268-8278. [PMID: 30963643 DOI: 10.1002/chem.201900172] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Indexed: 01/29/2023]
Abstract
The oxidation of [MII (3,5-DTBCat)(DTBbpy)] (M=Ni ([Ni]), Pd ([Pd]), and Pt ([Pt]); 3,5-DTBCat=3,5-di-tert-butylcatecholato; DTBbpy=4,4'-di-tert-butyl-2,2'-bipyridine) afforded the dimeric {[NiII (3,5-DTBSQ)(DTBbpy)](PF6 )}2 ({[Ni](PF6 )}2 ; 3,5-DTBSQ=3,5-di-tert-butylsemiquinonato) and monomeric semiquinonato (SQ) complexes [MII (3,5-DTBSQ)(DTBbpy)](PF6 ) (M=Pd ([Pd](PF6 )) and Pt ([Pt](PF6 ))). The negative solvatochromic properties of the SQ complexes allowed us to estimate the relative order of their dipole moments: [Pd](PF6 )>[Pt](PF6 )>{[Ni](PF6 )}2 . The complexes [Pd](PF6 ) and [Pt](PF6 ) adopt monomeric structures and are stable in CH2 Cl2 and toluene, whereas they gradually disproportionate at room temperature to [M] and 3,5-di-tert-butylbenzoquinone (3,5-DTBBQ) in polar solvents such as THF, MeOH, EtOH, DMF, or DMSO. The results of spectroscopic studies suggested that the oxidized nickel complex adopts a monomeric structure ([Ni](PF6 )) in CH2 Cl2 , but a dimeric structure ({[Ni](PF6 )}2 ) in the other investigated solvents. In polar solvents, {[Ni](PF6 )}2 may disproportionate to [Ni] and 3,5-DTBBQ at 323 K, thereby demonstrating a significant solvent- and metal-dependence in temperature. The relative activities of {[Ni](PF6 )}2 and [M](PF6 ) toward disproportionation are related to the electrochemically estimated Kdis values in CH2 Cl2 and DMF. The present work demonstrates that solvent polarity and the dipole moments of the SQ complexes promote disproportionation, which can be controlled by a judicious choice of the metal ion, solvent, and temperature.
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Affiliation(s)
- Shota Yamada
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo, 112-8551, Japan
| | - Takeshi Matsumoto
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo, 112-8551, Japan
| | - Ho-Chol Chang
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo, 112-8551, Japan
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24
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Mandal T, Das S, De Sarkar S. Nickel(II) Tetraphenylporphyrin as an Efficient Photocatalyst Featuring Visible Light Promoted Dual Redox Activities. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801737] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Tanumoy Mandal
- Department of Chemical SciencesIndian Institute of Science Education and Research Kolkata Mohanpur- 741246, West Bengal India
| | - Sanju Das
- Department of Chemical SciencesIndian Institute of Science Education and Research Kolkata Mohanpur- 741246, West Bengal India
| | - Suman De Sarkar
- Department of Chemical SciencesIndian Institute of Science Education and Research Kolkata Mohanpur- 741246, West Bengal India
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25
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Tahara K, Ashihara Y, Higashino T, Ozawa Y, Kadoya T, Sugimoto K, Ueda A, Mori H, Abe M. New π-extended catecholato complexes of Pt(ii) and Pd(ii) containing a benzothienobenzothiophene (BTBT) moiety: synthesis, electrochemical behavior and charge transfer properties. Dalton Trans 2019; 48:7367-7377. [PMID: 30949641 DOI: 10.1039/c8dt05057k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Benzothienobenzothiophene (BTBT) and derivatives have received increasing attention as organic field-effect transistor materials and molecular conductors. This report presents the first synthesis of metal complexes involving a BTBT moiety, which was achieved by complexation of 2,2'-bipyridyl complexes of Pt(ii) and Pd(ii) with dihydroxy-substituted BTBT (1) as a new π-extended catecholato ligand (tBu2Bpy = 4,4'-di-tert-butyl-2,2'-dipyridyl). The resulting complexes M(tBu2Bpy)(O2BTBT) (M = Pt (3Pt) and Pd (3Pd)) were characterized by UV-vis spectroscopy, density functional theory (DFT) calculations, and cyclic voltammetry. The electron donating ability of BTBT was substantially enhanced upon including two oxygen substituents followed by metal coordination. This enabled chemical oxidation of 3Pt and 3Pd with a mild chemical oxidant (ferrocenium hexafluorophosphate) and formation of the one-electron-oxidized state. While 3Pt and 3Pd exhibited an absorption band originating from a catecholate → Bpy ligand-to-ligand charge transfer transition typical of this class of catecholato complexes, the radical cations exhibited a unique π-π* intramolecular charge transfer (ICT) transition absorption in which the π and π* orbitals were the newly incorporated benzothienothiophene-based donor and semiquinonato-based acceptor, respectively. The BTBT+ skeleton was electronically divided into two sites by the present chemical modification. The ICT properties of the complexes were found to be modulated by varying the metal ions. These findings offer a new approach to molecular design for (semi)conducting materials using optical properties.
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Affiliation(s)
- Keishiro Tahara
- Department of Material Science and Research Center for New Functional Materials, Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 6781297, Japan
| | - Yuya Ashihara
- Department of Material Science and Research Center for New Functional Materials, Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 6781297, Japan
| | - Toshiki Higashino
- The Institute for Solid State Physics, The University of Tokyo, Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - Yoshiki Ozawa
- Department of Material Science and Research Center for New Functional Materials, Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 6781297, Japan
| | - Tomofumi Kadoya
- Department of Material Science and Research Center for New Functional Materials, Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 6781297, Japan
| | - Kunihisa Sugimoto
- Research & Utilization Division, Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Akira Ueda
- The Institute for Solid State Physics, The University of Tokyo, Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - Hatsumi Mori
- The Institute for Solid State Physics, The University of Tokyo, Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - Masaaki Abe
- Department of Material Science and Research Center for New Functional Materials, Graduate School of Material Science, University of Hyogo, 3-2-1, Kouto, Kamigori, Ako, Hyogo 6781297, Japan
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26
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van Leeuwen T, Buzzetti L, Perego LA, Melchiorre P. A Redox-Active Nickel Complex that Acts as an Electron Mediator in Photochemical Giese Reactions. Angew Chem Int Ed Engl 2019; 58:4953-4957. [PMID: 30747467 PMCID: PMC6519288 DOI: 10.1002/anie.201814497] [Citation(s) in RCA: 89] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 02/11/2019] [Indexed: 01/06/2023]
Abstract
We report a simple protocol for the photochemical Giese addition of C(sp3 )-centered radicals to a variety of electron-poor olefins. The chemistry does not require external photoredox catalysts. Instead, it harnesses the excited-state reactivity of 4-alkyl-1,4-dihydropyridines (4-alkyl-DHPs) to generate alkyl radicals. Crucial for reactivity is the use of a catalytic amount of Ni(bpy)3 2+ (bpy=2,2'-bipyridyl), which acts as an electron mediator to facilitate the redox processes involving fleeting and highly reactive intermediates.
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Affiliation(s)
- Thomas van Leeuwen
- ICIQ—Institute of Chemical Research of Catalonia the Barcelona Institute of Science and TechnologyAvenida Països Catalans 1643007TarragonaSpain
| | - Luca Buzzetti
- IIT—Istituto Italiano di TecnologiaLaboratory of Asymmetric Catalysis and Photochemistryvia Morego 3016163GenoaItaly
| | - Luca Alessandro Perego
- ICIQ—Institute of Chemical Research of Catalonia the Barcelona Institute of Science and TechnologyAvenida Països Catalans 1643007TarragonaSpain
| | - Paolo Melchiorre
- ICREA—Catalan Institution for Research and Advanced StudiesPasseig Lluís Companys 2308010BarcelonaSpain
- IIT—Istituto Italiano di TecnologiaLaboratory of Asymmetric Catalysis and Photochemistryvia Morego 3016163GenoaItaly
- ICIQ—Institute of Chemical Research of Catalonia the Barcelona Institute of Science and TechnologyAvenida Països Catalans 1643007TarragonaSpain
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27
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A water-soluble benzoxazole-based probe: Real-time monitoring PPi via situ reaction by two-photon cells imaging. Talanta 2019; 195:158-164. [DOI: 10.1016/j.talanta.2018.11.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 10/30/2018] [Accepted: 11/12/2018] [Indexed: 01/01/2023]
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28
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van Leeuwen T, Buzzetti L, Perego LA, Melchiorre P. A Redox‐Active Nickel Complex that Acts as an Electron Mediator in Photochemical Giese Reactions. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814497] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Thomas van Leeuwen
- ICIQ—Institute of Chemical Research of Catalonia the Barcelona Institute of Science and Technology Avenida Països Catalans 16 43007 Tarragona Spain
| | - Luca Buzzetti
- IIT—Istituto Italiano di TecnologiaLaboratory of Asymmetric Catalysis and Photochemistry via Morego 30 16163 Genoa Italy
| | - Luca Alessandro Perego
- ICIQ—Institute of Chemical Research of Catalonia the Barcelona Institute of Science and Technology Avenida Països Catalans 16 43007 Tarragona Spain
| | - Paolo Melchiorre
- ICREA—Catalan Institution for Research and Advanced Studies Passeig Lluís Companys 23 08010 Barcelona Spain
- IIT—Istituto Italiano di TecnologiaLaboratory of Asymmetric Catalysis and Photochemistry via Morego 30 16163 Genoa Italy
- ICIQ—Institute of Chemical Research of Catalonia the Barcelona Institute of Science and Technology Avenida Països Catalans 16 43007 Tarragona Spain
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29
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Bubnov MP, Cherkasov VK, Teplova IA, Druzhkov NO, Grishin ID, Baranov EV, Bogomyakov AS, Abakumov GA. Novel dioxolene nickel complexes with sterically hindered diazabutadienes. Coupling of aza-ligands coordinated to nickel. Dalton Trans 2019; 48:10516-10525. [DOI: 10.1039/c9dt01309a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Coupling of nickel complexes containing N,N′-disubstituted-2,3-dimethyl-1,4-diazabutadiene-1,3 occurs through the methyl group of the latter in nonpolar media in the presence of free o-quinone.
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Affiliation(s)
- Michael P. Bubnov
- G. A. Razuvaev Institute of Organometallic Chemistry of RAS
- 603950 Nizhniy Novgorod
- Russia
| | - Vladimir K. Cherkasov
- G. A. Razuvaev Institute of Organometallic Chemistry of RAS
- 603950 Nizhniy Novgorod
- Russia
| | - Irina A. Teplova
- G. A. Razuvaev Institute of Organometallic Chemistry of RAS
- 603950 Nizhniy Novgorod
- Russia
| | - Nickolay O. Druzhkov
- G. A. Razuvaev Institute of Organometallic Chemistry of RAS
- 603950 Nizhniy Novgorod
- Russia
| | - Ivan D. Grishin
- Lobachevsky State University of Nizhniy Novgorod
- Nizhniy Novgorod
- Russia
| | - Evgenii V. Baranov
- G. A. Razuvaev Institute of Organometallic Chemistry of RAS
- 603950 Nizhniy Novgorod
- Russia
| | - Artem S. Bogomyakov
- The International Tomography Center of the SB of RAS
- Novosibirsk 630090
- Russia
| | - Gleb. A. Abakumov
- G. A. Razuvaev Institute of Organometallic Chemistry of RAS
- 603950 Nizhniy Novgorod
- Russia
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30
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Tahara K, Kadowaki T, Kikuchi JI, Ozawa Y, Yoshimoto S, Abe M. Synthesis and Characterization of a New Series of Binuclear Pd(II) Biscatecholato Complexes: Non-Innocent Ligand-Based Approach to a Wide Range of Variation in Near-Infrared Absorptions of Mixed-Valence Complexes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20180187] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Keishiro Tahara
- Department of Material Science and Research Center for New Functional Materials, Graduate School of Material Science, University of Hyogo, 3-2-1 Kouto, Kamigori, Ako, Hyogo 678-1297, Japan
| | - Tomoya Kadowaki
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
| | - Jun-ichi Kikuchi
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
| | - Yoshiki Ozawa
- Department of Material Science and Research Center for New Functional Materials, Graduate School of Material Science, University of Hyogo, 3-2-1 Kouto, Kamigori, Ako, Hyogo 678-1297, Japan
| | - Soichiro Yoshimoto
- Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Masaaki Abe
- Department of Material Science and Research Center for New Functional Materials, Graduate School of Material Science, University of Hyogo, 3-2-1 Kouto, Kamigori, Ako, Hyogo 678-1297, Japan
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31
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Mu G, Cong L, Wen Z, Wu JIC, Kadish KM, Teets TS. Homoleptic Platinum Azo-iminate Complexes via Hydrogenative Cleavage of Formazans. Inorg Chem 2018; 57:9468-9477. [DOI: 10.1021/acs.inorgchem.8b01456] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Ge Mu
- University of Houston, Department of Chemistry, 3585 Cullen Boulevard, Room 112, Houston, Texas 77204-5003, United States
| | - Lei Cong
- University of Houston, Department of Chemistry, 3585 Cullen Boulevard, Room 112, Houston, Texas 77204-5003, United States
| | - Zhili Wen
- University of Houston, Department of Chemistry, 3585 Cullen Boulevard, Room 112, Houston, Texas 77204-5003, United States
| | - Judy I-Chia Wu
- University of Houston, Department of Chemistry, 3585 Cullen Boulevard, Room 112, Houston, Texas 77204-5003, United States
| | - Karl M. Kadish
- University of Houston, Department of Chemistry, 3585 Cullen Boulevard, Room 112, Houston, Texas 77204-5003, United States
| | - Thomas S. Teets
- University of Houston, Department of Chemistry, 3585 Cullen Boulevard, Room 112, Houston, Texas 77204-5003, United States
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Grübel M, Bosque I, Altmann PJ, Bach T, Hess CR. Redox and photocatalytic properties of a Ni II complex with a macrocyclic biquinazoline (Mabiq) ligand. Chem Sci 2018; 9:3313-3317. [PMID: 29780460 PMCID: PMC5932533 DOI: 10.1039/c7sc05320g] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 02/20/2018] [Indexed: 01/04/2023] Open
Abstract
We present a late, first row transition metal photosensitizer that promotes photocatalytic C-C bond formation. The title compound, [Ni(Mabiq)]OTf, as well as its one-electron reduced form, Ni(Mabiq), were synthesized and molecular structures of both were obtained. The electronic structure of the reduced complex additionally was characterized by spectroscopic and DFT computational methods. Notably, [NiII(Mabiq)]OTf is photoactive: reduction of the compound was achieved photochemically upon irradiation at λ = 457 nm and reductive quenching by NEt3. The performance of [Ni(Mabiq)]OTf as a photoredox catalyst was examined in the cyclization of a bromoalkyl-substituted indole. In this reaction, the first-row transition metal compound is comparable if not superior to [Ru(bpy)3]2+ in terms of efficiency (turnover number) and chemoselectivity. Studies using a series of sacrificial donor amines indicate that the excited state redox potential of [Ni(Mabiq)]+* is ≥1.25 V vs. SCE. This value is similar to the excited state potential of commonly employed noble metal based photocatalysts. The Ni-Mabiq compound thus provides a rare example of an earth-abundant photoredox catalyst.
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Affiliation(s)
- Michael Grübel
- Department of Chemistry , Catalysis Research Center (CRC) , Technische Universität München , 85747 Garching , Germany . ;
| | - Irene Bosque
- Department of Chemistry , Catalysis Research Center (CRC) , Technische Universität München , 85747 Garching , Germany . ;
| | - Philipp J Altmann
- Department of Chemistry , Catalysis Research Center (CRC) , Technische Universität München , 85747 Garching , Germany . ;
| | - Thorsten Bach
- Department of Chemistry , Catalysis Research Center (CRC) , Technische Universität München , 85747 Garching , Germany . ;
| | - Corinna R Hess
- Department of Chemistry , Catalysis Research Center (CRC) , Technische Universität München , 85747 Garching , Germany . ;
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Conner KM, Perugini AL, Malabute M, Brown SN. Group 10 Bis(iminosemiquinone) Complexes: Measurement of Singlet–Triplet Gaps and Analysis of the Effects of Metal and Geometry on Electronic Structure. Inorg Chem 2018; 57:3272-3286. [DOI: 10.1021/acs.inorgchem.8b00062] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Kyle M. Conner
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Hall, University of Notre Dame, Notre Dame, Indiana 46556-5670, United States
| | - Amanda L. Perugini
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Hall, University of Notre Dame, Notre Dame, Indiana 46556-5670, United States
| | - Miko Malabute
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Hall, University of Notre Dame, Notre Dame, Indiana 46556-5670, United States
| | - Seth N. Brown
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Hall, University of Notre Dame, Notre Dame, Indiana 46556-5670, United States
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Clarke RM, Jeen T, Rigo S, Thompson JR, Kaake LG, Thomas F, Storr T. Exploiting exciton coupling of ligand radical intervalence charge transfer transitions to tune NIR absorption. Chem Sci 2017; 9:1610-1620. [PMID: 29675206 PMCID: PMC5887452 DOI: 10.1039/c7sc04537a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 12/18/2017] [Indexed: 12/03/2022] Open
Abstract
We detail the rational design of a series of bimetallic bis-ligand radical Ni salen complexes in which the relative orientation of the ligand radical chromophores provides a mechanism to tune the energy of intense intervalence charge transfer (IVCT) bands in the near infrared (NIR) region.
We detail the rational design of a series of bimetallic bis-ligand radical Ni salen complexes in which the relative orientation of the ligand radical chromophores provides a mechanism to tune the energy of intense intervalence charge transfer (IVCT) bands in the near infrared (NIR) region. Through a suite of experimental (electrochemistry, electron paramagnetic resonance spectroscopy, UV-vis-NIR spectroscopy) and theoretical (density functional theory) techniques, we demonstrate that bimetallic Ni salen complexes form bis-ligand radicals upon two-electron oxidation, whose NIR absorption energies depend on the geometry imposed in the bis-ligand radical complex. Relative to the oxidized monomer [1˙]+ (E = 4500 cm–1, ε = 27 700 M–1 cm–1), oxidation of the cofacially constrained analogue 2 to [2˙˙]2+ results in a blue-shifted NIR band (E = 4830 cm–1, ε = 42 900 M–1 cm–1), while oxidation of 5 to [5˙˙]2+, with parallel arrangement of chromophores, results in a red-shifted NIR band (E = 4150 cm–1, ε = 46 600 M–1 cm–1); the NIR bands exhibit double the intensity in comparison to the monomer. Oxidation of the intermediate orientations results in band splitting for [3˙˙]2+ (E = 4890 and 4200 cm–1; ε = 26 500 and 21 100 M–1 cm–1), and a red-shift for [4˙˙]2+ using ortho- and meta-phenylene linkers, respectively. This study demonstrates for the first time, the applicability of exciton coupling to ligand radical systems absorbing in the NIR region and shows that by simple geometry changes, it is possible to tune the energy of intense low energy absorption by nearly 400 nm.
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Affiliation(s)
- Ryan M Clarke
- Department of Chemistry , Simon Fraser University , V5A1S6 , Burnaby , BC , Canada .
| | - Tiffany Jeen
- Department of Chemistry , Simon Fraser University , V5A1S6 , Burnaby , BC , Canada .
| | - Serena Rigo
- Department of Chemistry , Simon Fraser University , V5A1S6 , Burnaby , BC , Canada .
| | - John R Thompson
- Department of Chemistry , Simon Fraser University , V5A1S6 , Burnaby , BC , Canada .
| | - Loren G Kaake
- Department of Chemistry , Simon Fraser University , V5A1S6 , Burnaby , BC , Canada .
| | - Fabrice Thomas
- Départment de Chimie Moléculaire - Chimie Inorganique Redox (CIRE) - UMR CNRS 5250 , Université Grenoble-Alpes , B.P. 53 , 38041 Grenoble Cedex 9 , France
| | - Tim Storr
- Department of Chemistry , Simon Fraser University , V5A1S6 , Burnaby , BC , Canada .
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Farrell D, Kingston SJ, Tungulin D, Nuzzo S, Twamley B, Platts JA, Baker RJ. N
-Aryl-9,10-phenanthreneimines as Scaffolds for Exploring Noncovalent Interactions: A Structural and Computational Study. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700884] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- David Farrell
- School of Chemistry; University of Dublin; Trinity College; 2 Dublin Ireland
| | - Samuel J. Kingston
- School of Chemistry; University of Dublin; Trinity College; 2 Dublin Ireland
| | - Dmitry Tungulin
- School of Chemistry; University of Dublin; Trinity College; 2 Dublin Ireland
| | - Stefano Nuzzo
- School of Chemistry; University of Dublin; Trinity College; 2 Dublin Ireland
| | - Brendan Twamley
- School of Chemistry; University of Dublin; Trinity College; 2 Dublin Ireland
| | - James A. Platts
- School of Chemistry; Cardiff University; Main Building CF10 3AT Cardiff U.K
| | - Robert J. Baker
- School of Chemistry; University of Dublin; Trinity College; 2 Dublin Ireland
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Yang H, Zhao Y, Liu B, Su JH, Fedushkin IL, Wu B, Yang XJ. Noninnocent ligands: heteroleptic nickel complexes with α-diimine and 1,2-diketone derivatives. Dalton Trans 2017; 46:7857-7865. [PMID: 28598473 DOI: 10.1039/c7dt00455a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reaction of the Ni-Ni-bonded compound [(NiIL˙-)2] (1, L = [(2,6-iPr2C6H3)NC(Me)]2) with various 1,2-diketones afforded a series of heteroleptic complexes: [LNi(PhC(O)-C(O)Ph)] (2), [LNi(PhC(O)-C(O)Me)] (3), [LNi(3,5-tBu2C6H2O2)] (4), and [(LNi){μ-η2,η2-(MeC(O)-C(O)Me)}(NiL)] (5). Furthermore, the complex [Na(Et2O)][LNi{PhC(O)-C(O)Ph}] (6) was obtained by the reduction of 2 with 1.0 equiv. of Na metal. These complexes, which contain three potential redox-active centers, nickel and both α-diimine and 1,2-diketone ligands, were characterized by X-ray crystallography, NMR, EPR, and UV-vis-NIR spectra, magnetic susceptibility measurements, and DFT computations to elucidate their electronic structures.
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Affiliation(s)
- Hong Yang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710069, China.
| | - Yanxia Zhao
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710069, China.
| | - Bin Liu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710069, China.
| | - Ji-Hu Su
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
| | - Igor L Fedushkin
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, Tropinina 49, 603950, Nizhny Novgorod GSP-445, Russia
| | - Biao Wu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710069, China.
| | - Xiao-Juan Yang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710069, China.
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Huo P, Chen T, Hou JL, Yu L, Zhu QY, Dai J. Ligand-to-Ligand Charge Transfer within Metal–Organic Frameworks Based on Manganese Coordination Polymers with Tetrathiafulvalene-Bicarboxylate and Bipyridine Ligands. Inorg Chem 2016; 55:6496-503. [DOI: 10.1021/acs.inorgchem.6b00571] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Peng Huo
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Ting Chen
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Jin-Le Hou
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Lei Yu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Qin-Yu Zhu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Jie Dai
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
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Wang J, Ganguly R, Yongxin L, Díaz J, Soo HS, García F. A multi-step solvent-free mechanochemical route to indium(iii) complexes. Dalton Trans 2016; 45:7941-6. [DOI: 10.1039/c6dt00978f] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Indium complexes bearing bis(imino)acenaphthene (BIAN) ligands have been synthesized using “solvent-free”, facile mechanochemistry and can potentially be used as photosensitizers.
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Affiliation(s)
- Jingyi Wang
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- 21 Nanyang Link 637371
- Singapore
| | - Rakesh Ganguly
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- 21 Nanyang Link 637371
- Singapore
| | - Li Yongxin
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- 21 Nanyang Link 637371
- Singapore
| | - Jesus Díaz
- Departamento de Química Orgánica e Inorgánica
- Facultad de Veterinaria
- Cáceres 10071
- Spain
| | - Han Sen Soo
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- 21 Nanyang Link 637371
- Singapore
| | - Felipe García
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- 21 Nanyang Link 637371
- Singapore
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