51
|
Ðorđević L, Valentini C, Demitri N, Mézière C, Allain M, Sallé M, Folli A, Murphy D, Mañas‐Valero S, Coronado E, Bonifazi D. O‐Doped Nanographenes: A Pyrano/Pyrylium Route Towards Semiconducting Cationic Mixed‐Valence Complexes. Angew Chem Int Ed Engl 2020; 59:4106-4114. [DOI: 10.1002/anie.201914025] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Revised: 12/26/2019] [Indexed: 12/14/2022]
Affiliation(s)
- Luka Ðorđević
- School of Chemistry Cardiff University Main Building, Park Place Cardiff CF10 3AT UK
| | - Cataldo Valentini
- School of Chemistry Cardiff University Main Building, Park Place Cardiff CF10 3AT UK
| | - Nicola Demitri
- Elettra—Sincrotrone Trieste S.S. 14 Km 163.5 in Area Science Park 34149 Basovizza, Trieste Italy
| | - Cécile Mézière
- MOLTECH-Anjou—UMR CNRS 6200, UNIV Angers, SFR Matrix 2 Boulevard Lavoisier 49045 Angers Cedex France
| | - Magali Allain
- MOLTECH-Anjou—UMR CNRS 6200, UNIV Angers, SFR Matrix 2 Boulevard Lavoisier 49045 Angers Cedex France
| | - Marc Sallé
- MOLTECH-Anjou—UMR CNRS 6200, UNIV Angers, SFR Matrix 2 Boulevard Lavoisier 49045 Angers Cedex France
| | - Andrea Folli
- School of Chemistry Cardiff University Main Building, Park Place Cardiff CF10 3AT UK
| | - Damien Murphy
- School of Chemistry Cardiff University Main Building, Park Place Cardiff CF10 3AT UK
| | - Samuel Mañas‐Valero
- Instituto de Ciencia Molecular Universitat de València Catedrático José Beltrán 2 46980 Paterna Spain
| | - Eugenio Coronado
- Instituto de Ciencia Molecular Universitat de València Catedrático José Beltrán 2 46980 Paterna Spain
| | - Davide Bonifazi
- School of Chemistry Cardiff University Main Building, Park Place Cardiff CF10 3AT UK
| |
Collapse
|
52
|
O‐Doped Nanographenes: A Pyrano/Pyrylium Route Towards Semiconducting Cationic Mixed‐Valence Complexes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914025] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
53
|
Harada M, Tanioka M, Muranaka A, Aoyama T, Kamino S, Uchiyama M. A remarkably air-stable quinodimethane radical cation. Chem Commun (Camb) 2020; 56:9565-9568. [DOI: 10.1039/d0cc04025h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An ambient-stable radical cation of a Thiele's hydrocarbon derivative has been synthesized and its properties have been explored using a combined experimental and computational approach.
Collapse
Affiliation(s)
- Mei Harada
- Graduate School of Pharmaceutical Sciences
- The University of Tokyo
- Tokyo 113-0033
- Japan
| | - Masaru Tanioka
- Graduate School of Pharmaceutical Sciences
- The University of Tokyo
- Tokyo 113-0033
- Japan
- School of Pharmaceutical Sciences
| | - Atsuya Muranaka
- Cluster of Pioneering Research (CPR)
- Advanced Elements Chemistry Laboratory
- RIKEN
- Saitama
- Japan
| | - Tetsuya Aoyama
- Cluster of Pioneering Research (CPR)
- Advanced Elements Chemistry Laboratory
- RIKEN
- Saitama
- Japan
| | - Shinichiro Kamino
- School of Pharmaceutical Sciences
- Aichi Gakuin University
- Aichi 464-8650
- Japan
| | - Masanobu Uchiyama
- Graduate School of Pharmaceutical Sciences
- The University of Tokyo
- Tokyo 113-0033
- Japan
- Cluster of Pioneering Research (CPR)
| |
Collapse
|
54
|
Cen P, Wang M, Ma X, Chen L, Zhang YQ, Li Y, Tian D, Liu X. Coordination microenvironment perturbed single-ion magnet behavior in a β-diketone Dy( iii) complex. CrystEngComm 2020. [DOI: 10.1039/d0ce00935k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Employing mixed β-diketonate and bpy ligands leads to a mononuclear Dy(iii) SIM, of which the magneto-structural correlation is elucidated by the magnetic and theoretical studies, as well as a comparative study of reported analogues.
Collapse
Affiliation(s)
- Peipei Cen
- College of Public Health and Management
- Ningxia Medical University
- Yinchuan 750021
- China
| | - Meilin Wang
- College of Public Health and Management
- Ningxia Medical University
- Yinchuan 750021
- China
| | - Xiufang Ma
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering
- National Demonstration Center for Experimental Chemistry Education
- College of Chemistry and Chemical Engineering
- Ningxia University
- Yinchuan 750021
| | - Lei Chen
- School of Material Science and Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS
- School of Physical Science and Technology
- Nanjing Normal University
- Nanjing 210023
- China
| | - Yonghong Li
- College of Public Health and Management
- Ningxia Medical University
- Yinchuan 750021
- China
| | - Danian Tian
- College of Public Health and Management
- Ningxia Medical University
- Yinchuan 750021
- China
| | - Xiangyu Liu
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering
- National Demonstration Center for Experimental Chemistry Education
- College of Chemistry and Chemical Engineering
- Ningxia University
- Yinchuan 750021
| |
Collapse
|
55
|
Uemura K, Miyake R. Paramagnetic One-Dimensional Chain Complex Consisting of Three Kinds of Metallic Species Showing Magnetic Interaction through Metal-Metal Bonds. Inorg Chem 2019; 59:1692-1701. [PMID: 31877032 DOI: 10.1021/acs.inorgchem.9b02844] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A heterometallic and paramagnetic one-dimensional (1-D) chain (3) aligned as -Rh(+2)-Rh(+2)-Pt(+2)-Co(+2)-Pt(+2)- with direct metal-metal bonds was obtained by HOMO-LUMO interactions at the σ* (dz2) orbital between two kinds of complexes. The 1-D chains in 3 have relatively straight backbones because the raw material complexes, [Rh2(O2CCH3)4] and [Pt2Co(piam)4(NH3)4], are connected and stacked in a face-to-face fashion, where Co---Co are separated by about 13.3 Å with four different metals. Physical measurements revealed that 3 has a band gap between the σ-type conduction and valence bands, where d-orbitals of the Co ion with three unpaired electrons are laid among them. The magnetic behavior of 3 was investigated and found to be consistent with a complex interaction involving both zero-field splitting and Pauli paramagnetism attributed to band formation superimposed on relatively strong exchange coupling (zJ = -22.2 cm-1) between two high-spin Co(+2) ions separated by the diamagnetic Pt-Rh-Rh-Pt.
Collapse
Affiliation(s)
- Kazuhiro Uemura
- Department of Chemistry and Biomolecular Science, Faculty of Engineering , Gifu University , Yanagido 1-1 , Gifu , 501-1193 , Japan
| | - Rika Miyake
- Department of Chemistry and Biomolecular Science, Faculty of Engineering , Gifu University , Yanagido 1-1 , Gifu , 501-1193 , Japan
| |
Collapse
|
56
|
Yoshida Y, Maesato M, Saito G, Kitagawa H. Conducting Coronene Cation Radical Salt Containing Magnetic Metal Ions. Inorg Chem 2019; 58:14068-14074. [PMID: 31599584 DOI: 10.1021/acs.inorgchem.9b02080] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Coronene is the smallest homologue of benzene and is the smallest fragment of graphene among 6-fold symmetric polycyclic aromatic hydrocarbons. In this study, we obtained the first coronene cation radical solid containing magnetic counterions by an electrochemical method. Coronene monocations in the 1:1 salt, (coronene•+)(FeBr4-), assemble in a stacking manner via π-π interactions, which lead to a rather high room-temperature conductivity of 0.6 S cm-1. The salt shows semiconducting behavior as expected from the calculated band structure, and activation energies were estimated to be 0.25 eV at T ≥ 220 K and 0.18 eV at T ≤ 220 K. The magnetic susceptibility follows the Curie-Weiss law down to about 30 K, with a Curie constant (4.47 emu K mol-1) expected for S = 5/2 spins of iron(III) ions and a high Weiss temperature (-32.2 K). Upon further cooling, the salt exhibits a susceptibility kink at 16.2 K followed by the loss of a significant fraction of the susceptibility due to long-range antiferromagnetic ordering. Theoretical calculations predicted that the indirect π-d magnetic exchange interaction through C-H···Br hydrogen bonds is equal to Jπd = -3.10 K. Although the absolute value is lower than that of the direct d-d magnetic exchange interaction between the FeBr4- anions (Jdd = -13.35 K), it is evident that the π-d interactions play a certain role in determining the magnetic behavior. Considering that an isomorphous salt, (coronene•+)(GaBr4-) involving a nonmagnetic counterpart GaBr4-, exhibits singlet-triplet magnetic behavior with a spin gap of 1.44 × 103 K, it is most likely that in (coronene)(FeBr4) the nonmagnetic π-electrons serve as mediators of the magnetic ordering of d-spins through the π-d interactions.
Collapse
Affiliation(s)
- Yukihiro Yoshida
- Division of Chemistry, Graduate School of Science , Kyoto University , Kitashirakawa-Oiwakecho, Sakyo-ku , Kyoto 606-8502 , Japan
| | - Mitsuhiko Maesato
- Division of Chemistry, Graduate School of Science , Kyoto University , Kitashirakawa-Oiwakecho, Sakyo-ku , Kyoto 606-8502 , Japan
| | - Gunzi Saito
- Toyota Physical and Chemical Research Institute , Yokomichi 41-1 , Nagakute 480-1192 , Japan
| | - Hiroshi Kitagawa
- Division of Chemistry, Graduate School of Science , Kyoto University , Kitashirakawa-Oiwakecho, Sakyo-ku , Kyoto 606-8502 , Japan
| |
Collapse
|
57
|
Pham AT, Abbasi P, Monache GD, Mazarakioti EC, Rawson JM, Stamatatos TC, Pilkington M. Magneto-structural studies of two M–O–M bridged homochiral mixed valence Co(II)/Co(III) complexes. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.05.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
58
|
Redox-Active Dysprosium Single-Molecule Magnet: Spectro-Electrochemistry and Theoretical Investigations. MAGNETOCHEMISTRY 2019. [DOI: 10.3390/magnetochemistry5030046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The mononuclear single-molecule magnet (SMM) [Dy(tta)3(L)]⋅C6H14 (1) (where tta− = 2-thenoyltrifluoroacetonate and L = 4,5-bis(propylthio)-tetrathiafulvalene-2-(2-pyridyl)benzimidazole-methyl-2-pyridine) was studied by spectro-electrochemistry. The resulting electronic spectra of the three oxidation states 1, 1+∙, and 12+ were rationalized by time-dependent density functional theory (TD-DFT) calculations starting from the DFT optimized structures. The modulation of the magnetic anisotropy of the DyIII center upon oxidation was also inspected at the Complete Active Space Self-Consistent Field (CASSCF) level of calculation.
Collapse
|
59
|
Bregadze VI, Dyachenko OA, Kazheva ON, Kosenko ID, Kravchenko AV, Sivaev IB, Starodub VA. Electroconducting Radical-Cation Salts Based on Tetrathiafulvalene Derivatives and Transition Metals Bis(dicarbollides). RUSS J GEN CHEM+ 2019. [DOI: 10.1134/s1070363219050177] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
60
|
Extended Assemblies of Ru(bpy)(CO)2X2 (X = Cl, Br, I) Molecules Linked by 1,4-Diiodotetrafluoro-Benzene (DITFB) Halogen Bond Donors. CRYSTALS 2019. [DOI: 10.3390/cryst9060319] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The ruthenium carbonyl compounds, Ru(bpy)(CO)2X2 (X = Cl, Br or I) act as neutral halogen bond (XB) acceptors when co-crystallized with 1,4-diiodotetrafluoro-benzene (DITFB). The halogen bonding strength of the Ru-X⋅⋅⋅I halogen bonds follow the nucleophilic character of the halido ligand. The strongest halogen bond occurs between the chlorido ligand and the iodide atoms of the DITFB. All three halogen bonded complexes form polymeric assemblies in the solid state. In Ru(bpy)(CO)2Cl2⋅DITFB (1) and in Ru(bpy)(CO)2Br2⋅DITFB (2) both halido ligands are halogen bonded to only one DITFB donor. In Ru(bpy)(CO)2I2⋅DITFB (3) only one of the halido ligands is involved in halogen bonding acting as ditopic center for two DITFB donors. The polymeric structures of 1 and 2 are isomorphic wave-like single chain systems, while the iodine complexes form pairs of linear chains attached together with weak F⋅⋅⋅O≡C interactions between the closest neighbors. The stronger polarization of the iodide ligand compared to the Cl or Br ligands favors nearly linear C-I⋅⋅⋅I angles between the XB donor and the metal complex supporting the linear arrangement of the halogen bonded chain.
Collapse
|
61
|
Cot S, Leu MK, Kalamiotis A, Dimitrakis G, Sans V, de Pedro I, Cano I. An Oxalate‐Bridged Binuclear Iron(III) Ionic Liquid for the Highly Efficient Glycolysis of Polyethylene Terephthalate under Microwave Irradiation. Chempluschem 2019; 84:786-793. [DOI: 10.1002/cplu.201900075] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 04/08/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Sergi Cot
- Faculty of EngineeringUniversity of Nottingham Nottingham NG7 2RD United Kingdom
| | - Meike K. Leu
- GSK Carbon Neutral Laboratory for Sustainable ChemistryUniversity of Nottingham Nottingham NG7 2GA United Kingdom
| | - Alexis Kalamiotis
- Faculty of EngineeringUniversity of Nottingham Nottingham NG7 2RD United Kingdom
| | - Georgios Dimitrakis
- Faculty of EngineeringUniversity of Nottingham Nottingham NG7 2RD United Kingdom
| | - Victor Sans
- GSK Carbon Neutral Laboratory for Sustainable ChemistryUniversity of Nottingham Nottingham NG7 2GA United Kingdom
- Faculty of EngineeringUniversity of Nottingham Nottingham NG7 2RD United Kingdom
- Institute of Advanced Materials (INAM)Universitat Jaume I 12006 Castellon Spain
| | - Imanol de Pedro
- CITIMAC Facultad de CienciasUniversidad de Cantabria 39005 Santander Spain
| | - Israel Cano
- GSK Carbon Neutral Laboratory for Sustainable ChemistryUniversity of Nottingham Nottingham NG7 2GA United Kingdom
- School of ChemistryUniversity of Nottingham Nottingham NG7 2RD United Kingdom
| |
Collapse
|
62
|
Wu WH, Huang MJ, Zeng Q, Xian WR, Liao WM, He J. Electrical and magnetic properties of a radical-based Co(II) coordination complex with C H⋯π and π⋯π supramolecular interactions. INORG CHEM COMMUN 2019. [DOI: 10.1016/j.inoche.2019.03.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
|
63
|
Lukov VV, Shcherbakov IN, Levchenkov SI, Tupolova YP, Popov LD, Pankov I, Posokhova SV. Controlled Molecular Magnetism of Bi- and Polynuclear Transition Metal Complexes Based on Hydrazones, Azomethines, and Their Analogs. RUSS J COORD CHEM+ 2019. [DOI: 10.1134/s1070328419030060] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
64
|
Mamontova E, Long J, Ferreira RAS, Botas AMP, Salles F, Guari Y, Carlos LD, Larionova J. Making Prussian blue analogues nanoparticles luminescent: effect of the luminophore confinement over the properties. NANOSCALE 2019; 11:7097-7101. [PMID: 30706065 DOI: 10.1039/c8nr09982k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this communication, we report the post-synthetic functionalization of K+/Ni2+/[Cr(CN)6]3- Prussian blue analogue (PBA) nanoparticles by the 2-aminoanthracene luminophore to yield a bifunctional magneto-luminescent nanosystem. The photoluminescence properties of the fluorophore are found modified by the confinement effect upon adsorption, while the magnetic behavior of PBA is preserved.
Collapse
Affiliation(s)
- Ekaterina Mamontova
- Institut Charles Gerhardt, UMR 5253, Equipe Ingénierie Moléculaire et Nano-Objets, Université de Montpellier, ENSCM, CNRS, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France.
| | | | | | | | | | | | | | | |
Collapse
|
65
|
Su J, Hu TH, Murase R, Wang HY, D’Alessandro DM, Kurmoo M, Zuo JL. Redox Activities of Metal–Organic Frameworks Incorporating Rare-Earth Metal Chains and Tetrathiafulvalene Linkers. Inorg Chem 2019; 58:3698-3706. [DOI: 10.1021/acs.inorgchem.8b03299] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Jian Su
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210023, China
| | - Tian-Hao Hu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210023, China
| | - Ryuichi Murase
- School of Chemistry, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Hai-Ying Wang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210023, China
| | | | - Mohamedally Kurmoo
- Institut de Chimie de Strasbourg, CNRS-UMR7177, Université de Strasbourg, 4 rue Blaise Pascal, Strasbourg 67000, France
| | - Jing-Lin Zuo
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210023, China
| |
Collapse
|
66
|
Bhattacharya S, Ayass WW, Taffa DH, Schneemann A, Semrau AL, Wannapaiboon S, Altmann PJ, Pöthig A, Nisar T, Balster T, Burtch NC, Wagner V, Fischer RA, Wark M, Kortz U. Discovery of Polyoxo-Noble-Metalate-Based Metal–Organic Frameworks. J Am Chem Soc 2019; 141:3385-3389. [DOI: 10.1021/jacs.8b13397] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Saurav Bhattacharya
- Department of Life Sciences and Chemistry, Jacobs University, Campus Ring 1, 28759 Bremen, Germany
| | - Wassim W. Ayass
- Department of Life Sciences and Chemistry, Jacobs University, Campus Ring 1, 28759 Bremen, Germany
| | - Dereje H. Taffa
- Institute of Chemistry, Carl von Ossietzky University Oldenburg, 26129 Oldenburg, Germany
| | - Andreas Schneemann
- Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - A. Lisa Semrau
- Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | | | - Philipp J. Altmann
- Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Alexander Pöthig
- Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Talha Nisar
- Department of Physics and Earth Sciences, Jacobs University, Campus Ring 1, 28759 Bremen, Germany
| | - Torsten Balster
- Department of Physics and Earth Sciences, Jacobs University, Campus Ring 1, 28759 Bremen, Germany
| | - Nicholas C. Burtch
- Sandia National Laboratories, Livermore, California 94551, United States
| | - Veit Wagner
- Department of Physics and Earth Sciences, Jacobs University, Campus Ring 1, 28759 Bremen, Germany
| | - Roland A. Fischer
- Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Michael Wark
- Institute of Chemistry, Carl von Ossietzky University Oldenburg, 26129 Oldenburg, Germany
| | - Ulrich Kortz
- Department of Life Sciences and Chemistry, Jacobs University, Campus Ring 1, 28759 Bremen, Germany
| |
Collapse
|
67
|
Goswami S, Singha S, Saha R, Singha Roy A, Islam M, Kumar S. A bi-nuclear Cu(II)-complex for selective epoxidation of alkenes: Crystal structure, thermal, photoluminescence and cyclic voltammetry. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.10.066] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
68
|
Core-insertion of palladium in naphthalenediimides: Opto-electronic properties, structural insights and coupling studies. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.09.077] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
69
|
Magnetic and Electronic Properties of π-d Interacting Molecular Magnetic Superconductor κ-(BETS)2FeX4 (X = Cl, Br) Studied by Angle-Resolved Heat Capacity Measurements. CRYSTALS 2019. [DOI: 10.3390/cryst9020066] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Thermodynamic picture induced by π-d interaction in a molecular magnetic superconductor κ-(BETS)2FeX4 (X = Cl, Br), where BETS is bis(ethylenedithio)tetraselenafulvalene, studied by single crystal calorimetry is reviewed. Although the S = 5/2 spins of Fe3+ in the anion layers form a three-dimensional long-range ordering with nearly full entropy of Rln6, a broad hump structure appears in the temperature dependence of the magnetic heat capacity only when the magnetic field is applied parallel to the a axis, which is considered as the magnetic easy axis. The scaling of the temperature dependence of the magnetic heat capacity of the two salts is possible using the parameter of |Jdd|/kB and therefore the origin of the hump structure is related to the direct magnetic interaction, Jdd, that is dominant in the system. Quite unusual crossover from a three-dimensional ordering to a one-dimensional magnet occurs when magnetic fields are applied parallel to the a axis. A notable anisotropic field-direction dependence against the in-plane magnetic field was also observed in the transition temperature of the bulk superconductivity by the angle-resolved heat capacity measurements. We discuss the origin of this in-plane anisotropy in terms of the 3d electron spin configuration change induced by magnetic fields.
Collapse
|
70
|
Antonijević IS, Malenov DP, Hall MB, Zarić SD. Study of stacking interactions between two neutral tetrathiafulvalene molecules in Cambridge Structural Database crystal structures and by quantum chemical calculations. ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS 2019; 75:1-7. [DOI: 10.1107/s2052520618015494] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 11/02/2018] [Indexed: 11/10/2022]
Abstract
Tetrathiafulvalene (TTF) and its derivatives are very well known as electron donors with widespread use in the field of organic conductors and superconductors. Stacking interactions between two neutral TTF fragments were studied by analysing data from Cambridge Structural Database crystal structures and by quantum chemical calculations. Analysis of the contacts found in crystal structures shows high occurrence of parallel displaced orientations of TTF molecules. In the majority of the contacts, two TTF molecules are displaced along their longer C
2 axis. The most frequent geometry has the strongest TTF–TTF stacking interaction, with CCSD(T)/CBS energy of −9.96 kcal mol−1. All the other frequent geometries in crystal structures are similar to geometries of the minima on the calculated potential energy surface.
Collapse
|
71
|
Kolanji K, Postulka L, Wolf B, Lang M, Schollmeyer D, Baumgarten M. Planar Benzo[1,2- b:4,5- b']dithiophene Derivatives Decorated with Nitronyl and Imino Nitroxides. J Org Chem 2019; 84:140-149. [PMID: 30421918 DOI: 10.1021/acs.joc.8b02499] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Four weakly antiferromagnetic interacting biradicals of benzo[1,2- b:4,5- b']dithiophene (BDT) and BDT extended with two thiophenes (BDTTh2) linked with nitronyl and imino nitroxides (NN and IN) as BDT-NN, BDT-IN, BDTTh2-NN, and BDTTh2-IN were designed, synthesized, and characterized. Short intermolecular π-π distances were found (3.42 Å) for BDT-NN, whereas larger ones were found for BDT-IN (3.54 Å) and BDTTh2-NN (3.67 Å), respectively. Intramolecular magnetic interaction ( Jintra,exp/ kB) of BDT-NN (-26 K) is much larger than for BDT-IN (-5.3 K), while it is reduced for the dithiophene-extended molecule BDTTh2-NN (-2.3 K). Intermolecular interactions ( zJinter,exp/ kB) of BDT-NN (-6.5 K) and BDT-IN (-6.0 K) are stronger than for BDTTh2-NN (-4.6 K). Such large intermolecular couplings resulting from good π-stacking mark BDT-IN and BDTTh2-NN as promising crystalline materials with similar sized Jintra and Jinter. In addition, we also extracted a coupling within the chain of Jchain/ kB = -2.2 K and a coupling between the chains of zJinterchain = -1.5 K for BDTTh2-NN by a Heisenberg chain model. Intra- and intermolecular interactions and spin densities were examined by DFT studies.
Collapse
Affiliation(s)
- Kubandiran Kolanji
- Max Planck Institute for Polymer Research , Ackermannweg 10 , 55128 Mainz , Germany
| | - Lars Postulka
- Physikalisches Institut , J.W. Goethe-Universität Frankfurt , Max-von-Laue- Strasse 1 , 60438 Frankfurt am Main , Germany
| | - Bernd Wolf
- Physikalisches Institut , J.W. Goethe-Universität Frankfurt , Max-von-Laue- Strasse 1 , 60438 Frankfurt am Main , Germany
| | - Michael Lang
- Physikalisches Institut , J.W. Goethe-Universität Frankfurt , Max-von-Laue- Strasse 1 , 60438 Frankfurt am Main , Germany
| | - Dieter Schollmeyer
- Institut für Organische Chemie , Johannes Gutenberg-Universität Mainz , Duesbergweg 10-14 , 55099 Mainz , Germany
| | - Martin Baumgarten
- Max Planck Institute for Polymer Research , Ackermannweg 10 , 55128 Mainz , Germany
| |
Collapse
|
72
|
Malenov DP, Zarić SD. Strong stacking interactions of metal–chelate rings are caused by substantial electrostatic component. Dalton Trans 2019; 48:6328-6332. [DOI: 10.1039/c9dt00182d] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Stacking interactions of metal–chelate rings are strong due to very strong electrostatic energy component.
Collapse
Affiliation(s)
- Dušan P. Malenov
- Faculty of Chemistry
- University of Belgrade
- 11000 Belgrade
- Serbia
- Department of Chemistry
| | - Snežana D. Zarić
- Faculty of Chemistry
- University of Belgrade
- 11000 Belgrade
- Serbia
- Department of Chemistry
| |
Collapse
|
73
|
Quantum Chemical Calculations, Spectroscopic Studies and Biological Activity of Organic–Inorganic Hybrid Compound (2,2-Dimethylpropane-1,3-diammonium) Tetrachlorozincate(II). ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2019. [DOI: 10.1007/s13369-018-3573-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
74
|
Stamatatos TC, Rentschler E. Organic chelate-free and azido-rich metal clusters and coordination polymers from the use of Me3SiN3: a new synthetic route to complexes with beautiful structures and diverse magnetic properties. Chem Commun (Camb) 2019; 55:11-26. [DOI: 10.1039/c8cc08854c] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A new synthetic route to structurally novel and magnetically interesting 3d-metal azido clusters and coordination polymers is presented; the key reagent for the preparation of solely azido-bridged molecule-based species is the organic azide precursor Me3SiN3.
Collapse
Affiliation(s)
| | - Eva Rentschler
- Institute of Inorganic and Analytical Chemistry
- Johannes Gutenberg University Mainz
- D-55128 Mainz
- Germany
| |
Collapse
|
75
|
Ben Brahim K, Ben Gzaiel M, Oueslati A, Gargouri M. Electrical conductivity and vibrational studies induced phase transitions in [(C 2H 5) 4N]FeCl 4. RSC Adv 2018; 8:40676-40686. [PMID: 35557925 PMCID: PMC9091414 DOI: 10.1039/c8ra07671e] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 11/25/2018] [Indexed: 11/21/2022] Open
Abstract
The compound, tetraethylammonium tetrachloroferrate [(C2H5)4N]FeCl4, was prepared by slow evaporation at room temperature. It was characterized by X-ray powder diffraction, thermal analysis, and impedance and vibrational spectroscopy. X-ray diffraction data confirmed formation of a single phase material which crystallized at room temperature in the hexagonal system (P63 mc space group). DSC showed the existence of two phase transitions at 413 K and 430 K. Electrical conductivity was measured in the temperature and frequency ranges of 390 K to 440 K and 40 Hz to 110 MHz, respectively. Nyquist plots revealed the existence of grains and grain boundaries that were fitted to an equivalent circuit. AC conductivity plots were analyzed by Jonscher's power law. Variations in the "s" values indicated that CBH models describe the conduction mechanism in regions I and II. Temperature dependence of Raman spectra showed that the most important changes were observed in the cationic parts ([(C2H5)4N]+). The activation energy value obtained from the line width decreased which indicated an order-disorder model.
Collapse
Affiliation(s)
- Kh Ben Brahim
- Laboratory for Spectroscopic Characterization and Optics of Materials, Faculty of Sciences, University of Sfax B. P. 1171 3000 Sfax Tunisia
| | - M Ben Gzaiel
- Laboratory for Spectroscopic Characterization and Optics of Materials, Faculty of Sciences, University of Sfax B. P. 1171 3000 Sfax Tunisia
| | - A Oueslati
- Laboratory for Spectroscopic Characterization and Optics of Materials, Faculty of Sciences, University of Sfax B. P. 1171 3000 Sfax Tunisia
| | - M Gargouri
- Laboratory for Spectroscopic Characterization and Optics of Materials, Faculty of Sciences, University of Sfax B. P. 1171 3000 Sfax Tunisia
| |
Collapse
|
76
|
León-Gómez JP, Toscano RA, Escudero R, Morales F, Camarillo E, Hernández JM, Murrieta H, Reber C, Sosa-Torres ME. Semiconducting, magnetic, luminescence properties and theoretical calculations of the tetra-azamacrocyclic compound: trans-Cr(cyclam)Cl2]TCNQ. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.07.052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
77
|
A new Ni(dmit)2-based organic magnetic charge-transfer salt, (m-PO-CONH-N-methylpyridinium)[Ni(dmit)2]·CH3CN. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.07.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
78
|
Manna SC, Manna S, Mistri S, Patra A, Zangrando E, Puschmann H, Goddard PA, Ghannadzadeh S. Discrete and 1D Polymeric Copper(II) Complexes of Tetranuclear Cubane-like Units: Structural and Magnetic Characterization. ChemistrySelect 2018. [DOI: 10.1002/slct.201801677] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Subal Chandra Manna
- Department of Chemistry and Chemical Technology; Vidyasagar University; Midnapore 721102, West Bengal India
| | - Soumen Manna
- Department of Chemistry and Chemical Technology; Vidyasagar University; Midnapore 721102, West Bengal India
| | - Soumen Mistri
- Department of Chemistry and Chemical Technology; Vidyasagar University; Midnapore 721102, West Bengal India
| | - Apu Patra
- Department of Chemistry and Chemical Technology; Vidyasagar University; Midnapore 721102, West Bengal India
| | - Ennio Zangrando
- Department of Pharmaceutical and Chemical Sciences; University of Trieste; 34127 Trieste Italy
| | - Horst Puschmann
- Department of Chemistry; University of Durham; South Road Durham DH1 3LE UK
| | - P. A. Goddard
- Department of Physics; University of Warwick; Gibbet Hill Road Coventry CV4 7AL UK
| | - S. Ghannadzadeh
- Oxford Instruments Nano Science, Tubney Woods, Abingdon; Oxfordshire OX13 5QX UK
| |
Collapse
|
79
|
Pedersen KS, Perlepe P, Aubrey ML, Woodruff DN, Reyes-Lillo SE, Reinholdt A, Voigt L, Li Z, Borup K, Rouzières M, Samohvalov D, Wilhelm F, Rogalev A, Neaton JB, Long JR, Clérac R. Formation of the layered conductive magnet CrCl 2(pyrazine) 2 through redox-active coordination chemistry. Nat Chem 2018; 10:1056-1061. [PMID: 30202103 DOI: 10.1038/s41557-018-0107-7] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 06/05/2018] [Indexed: 11/09/2022]
Abstract
The unique properties of graphene, transition-metal dichalcogenides and other two-dimensional (2D) materials have boosted interest in layered coordination solids. In particular, 2D materials that behave as both conductors and magnets could find applications in quantum magnetoelectronics and spintronics. Here, we report the synthesis of CrCl2(pyrazine)2, an air-stable layered solid, by reaction of CrCl2 with pyrazine (pyz). This compound displays a ferrimagnetic order below ∼55 K, reflecting the presence of strong magnetic interactions. Electrical conductivity measurements demonstrate that CrCl2(pyz)2 reaches a conductivity of 32 mS cm-1 at room temperature, which operates through a 2D hopping-based transport mechanism. These properties are induced by the redox-activity of the pyrazine ligand, which leads to a smearing of the Cr 3d and pyrazine π states. We suggest that the combination of redox-active ligands and reducing paramagnetic metal ions represents a general approach towards tuneable 2D materials that consist of charge-neutral layers and exhibit both long-range magnetic order and high electronic conductivity.
Collapse
Affiliation(s)
- Kasper S Pedersen
- CNRS, CRPP, UMR 5031, Pessac, France. .,Univ. Bordeaux, CRPP, UMR 5031, Pessac, France. .,Department of Chemistry, Technical University of Denmark, Lyngby, Denmark.
| | - Panagiota Perlepe
- CNRS, CRPP, UMR 5031, Pessac, France.,Univ. Bordeaux, CRPP, UMR 5031, Pessac, France.,CNRS, ICMCB, UMR 5026, Pessac, France.,Univ. Bordeaux, ICMCB, UMR 5026, Pessac, France
| | - Michael L Aubrey
- Department of Chemistry, University of California Berkeley, Berkeley, CA, USA
| | | | - Sebastian E Reyes-Lillo
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.,Department of Physics, University of California Berkeley, Berkeley, CA, USA.,Departamento de Ciencias Físicas, Universidad Andres Bello, Santiago, Chile
| | - Anders Reinholdt
- Department of Chemistry, University of Copenhagen, Copenhagen, Denmark
| | - Laura Voigt
- Department of Chemistry, Technical University of Denmark, Lyngby, Denmark
| | - Zheshen Li
- Department of Physics and Astronomy - Centre for Storage Ring Facilities (ISA), Aarhus University, Aarhus, Denmark
| | - Kasper Borup
- Center for Materials Crystallography, Department of Chemistry and iNano, Aarhus, Denmark
| | - Mathieu Rouzières
- CNRS, CRPP, UMR 5031, Pessac, France.,Univ. Bordeaux, CRPP, UMR 5031, Pessac, France
| | - Dumitru Samohvalov
- CNRS, CRPP, UMR 5031, Pessac, France.,Univ. Bordeaux, CRPP, UMR 5031, Pessac, France.,Sara Pharm Solutions, Bucharest, Romania
| | | | | | - Jeffrey B Neaton
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.,Department of Physics, University of California Berkeley, Berkeley, CA, USA.,Kavli Energy Nanosciences Institute at Berkeley, Berkeley, CA, USA
| | - Jeffrey R Long
- Department of Chemistry, University of California Berkeley, Berkeley, CA, USA.,Department of Chemical and Biomolecular Engineering, University of California Berkeley, Berkeley, CA, USA.,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Rodolphe Clérac
- CNRS, CRPP, UMR 5031, Pessac, France. .,Univ. Bordeaux, CRPP, UMR 5031, Pessac, France.
| |
Collapse
|
80
|
Sahadevan SA, Abhervé A, Monni N, Sáenz de Pipaón C, Galán-Mascarós JR, Waerenborgh JC, Vieira BJC, Auban-Senzier P, Pillet S, Bendeif EE, Alemany P, Canadell E, Mercuri ML, Avarvari N. Conducting Anilate-Based Mixed-Valence Fe(II)Fe(III) Coordination Polymer: Small-Polaron Hopping Model for Oxalate-Type Fe(II)Fe(III) 2D Networks. J Am Chem Soc 2018; 140:12611-12621. [DOI: 10.1021/jacs.8b08032] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Suchithra Ashoka Sahadevan
- Laboratoire MOLTECH-Anjou UMR 6200, UFR Sciences, CNRS, Université d’Angers, Bât. K, 2 Bd. Lavoisier, 49045 Angers, France
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, I-09042 Monserrato (Cagliari), Italy
| | - Alexandre Abhervé
- Laboratoire MOLTECH-Anjou UMR 6200, UFR Sciences, CNRS, Université d’Angers, Bât. K, 2 Bd. Lavoisier, 49045 Angers, France
| | - Noemi Monni
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, I-09042 Monserrato (Cagliari), Italy
| | - Cristina Sáenz de Pipaón
- Institute of Chemical Research of Catalonia, The Barcelona Institute of Science and Technology (BIST), Avenida Països Catalans 16, 43007 Tarragona, Spain
| | - José Ramón Galán-Mascarós
- Institute of Chemical Research of Catalonia, The Barcelona Institute of Science and Technology (BIST), Avenida Països Catalans 16, 43007 Tarragona, Spain
- ICREA, Passeig Lluís Companys 23, 08010 Barcelona, Spain
| | - João C. Waerenborgh
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela LRS, Portugal
| | - Bruno J. C. Vieira
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela LRS, Portugal
| | - Pascale Auban-Senzier
- Laboratoire de Physique des Solides, UMR 8502, Bât. 510, CNRS-Université Paris-Sud, 91405 Orsay, France
| | | | | | - Pere Alemany
- Departament de Ciència de Materials i Química Física and Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain
| | - Enric Canadell
- Institut de Ciència de Materials de Barcelona (CSIC), Campus de la UAB, E-08193 Bellaterra, Spain
| | - Maria Laura Mercuri
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, I-09042 Monserrato (Cagliari), Italy
| | - Narcis Avarvari
- Laboratoire MOLTECH-Anjou UMR 6200, UFR Sciences, CNRS, Université d’Angers, Bât. K, 2 Bd. Lavoisier, 49045 Angers, France
| |
Collapse
|
81
|
Jami AK, Ali J, Mondal S, Homs-Esquius J, Sañudo EC, Baskar V. Dy2 and Dy4 hydroxo clusters assembled using o-vanillin based Schiff bases as ligands and β-diketone co-ligands: Dy4 cluster exhibits slow magnetic relaxation. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.05.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
|
82
|
Wang QL, Wu RF, Cai CZ, Yue RX, Gao Y, Shi PF, Wang WM. A series of rhombus-shaped Ln 4 clusters: Syntheses, structures, luminescence properties and the SMM behavior of the Dy 4 analogue. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.04.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
83
|
Structure and Properties of a BEDT‐TTF‐Based Organic Conductor with a Ferrocene‐Based Magnetic Anion Octamethylferrocenedisulfonate. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800482] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
84
|
Tian H, Ungur L, Zhao L, Ding S, Tang J, Chibotaru LF. Exchange Interactions Switch Tunneling: A Comparative Experimental and Theoretical Study on Relaxation Dynamics by Targeted Metal Ion Replacement. Chemistry 2018; 24:9928-9939. [PMID: 29697161 DOI: 10.1002/chem.201801523] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Indexed: 11/12/2022]
Abstract
The magnetic relaxation and magnetization blocking barriers of tailor-made homo- and heterodinuclear compounds [Dy2 (opch)2 (OAc)2 (H2 O)2 ]⋅MeOH (1) and [DyMn(opch)2 (OAc)(MeOH)(H2 O)2 ] (2), where H2 opch is (E)-N'-(2-hydroxy-3-methoxybenzylidene)pyrazine-2-carbohydrazide, were systematically investigated and the change in single-molecule magnet behavior originating from targeted replacement of one dysprosium site in the Dy2 compound with manganese was elucidated through a combination of experimental and theoretical studies. A detailed comparative study on these closely related model compounds revealed remarkable changes of the crystal-field splitting and anisotropy of the Dy site and the total exchange spectrum due to the replacement of Dy by Mn. The blocking barriers of these two compounds, which explain their different relaxation behaviors, were analyzed. The two Ising doublets arising from the magnetic interaction in the case of 1 are strongly uniaxial, with tunneling splittings smaller than 10-6 cm-1 , and this leads to magnetic relaxation at temperatures exceeding the exchange energy (2.14 cm-1 ), which involves transition via the excited states corresponding to local transitions on the excited doublet at the Dy site. The third and fourth exchange doublets in 2 (located at 2.16 and 3.25 cm-1 , respectively) show much larger tunneling splittings (of 10-4 and 10-3 cm-1 , respectively), and thus open an important path for magnetic relaxation.
Collapse
Affiliation(s)
- Haiquan Tian
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China.,Shandong Provincial Key Laboratory, of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, 252000, P. R. China
| | - Liviu Ungur
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium
| | - Lang Zhao
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Shuai Ding
- Shandong Juye County Coal Board, Juye, 274900, P.R. China
| | - Jinkui Tang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Liviu F Chibotaru
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium
| |
Collapse
|
85
|
Zhang WY, Chen P, Li HF, Zhang YQ, Yan PF, Sun WB. Dinuclear Dy 2 Single-Molecule Magnets: Functional Modulation on the Bridging Ligand and Different Relaxation Performances within the Single-Crystal to Single-Crystal System. Chem Asian J 2018; 13:1725-1734. [PMID: 29663704 DOI: 10.1002/asia.201800418] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 04/13/2018] [Indexed: 11/08/2022]
Abstract
Crystal structures, single-molecule magnetic behavior, and ab initio calculations of four new phenoxo-bridged dinuclear dysprosium complexes and their gadolinium(III) analogues are explored. Complexes [Dy2 (DMOMP)2 (DBM)4 ]2 ⋅CHCl3 (1; DMOMP=1-methyl-3,5-dimethoxy-4-hydroxybenzene, DBM=1,3-diphenylpropane-1,3-dione); [Dy2 (DMOAP)2 (DBM)4 ]2 ⋅CHCl3 (2; DMOAP=syringaldehyde); Dy2 (DMOEP)2 (DBM)4 (3; DMOEP=methyl syringate); and solvent-free Dy2 (DMOMP)2 (DBM)4 (4), which is obtained by the transformation of single crystal into single crystal from 1, have nearly identical core structures and only differ in the substituents at the para position of the phenol moieties of the bridging ligand. In this system, the electronic effects are efficiently implemented to significantly modify the ligand field strength and exchange coupling by modulating the substituents on the phenol backbone. The effective energy barrier (Ueff ) of magnetization reversal is improved significantly to fivefold magnitude, at most, and the hysteresis temperature up to 3.5 K by deliberately using the electron-withdrawing substituent to replace the electron-donating one. The origin of the two relaxation processes in 1 is mostly attributed to the existence of two molecules in one unit, which is illuminated by means of the transformation of single crystal into single crystal.
Collapse
Affiliation(s)
- Wan-Ying Zhang
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, 150080, Harbin, P.R. China
| | - Peng Chen
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, 150080, Harbin, P.R. China
| | - Hong-Feng Li
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, 150080, Harbin, P.R. China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, 210023, Nanjing, P.R. China
| | - Peng-Fei Yan
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, 150080, Harbin, P.R. China
| | - Wen-Bin Sun
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Material Science, Heilongjiang University, 150080, Harbin, P.R. China.,Key Laboratory of Chemical Engineering Process, & Technology for High-efficiency Conversion, College of Heilongjiang Province, P.R. China
| |
Collapse
|
86
|
Yang JW, Tian YM, Tao J, Chen P, Li HF, Zhang YQ, Yan PF, Sun WB. Modulation of the Coordination Environment around the Magnetic Easy Axis Leads to Significant Magnetic Relaxations in a Series of 3d-4f Schiff Complexes. Inorg Chem 2018; 57:8065-8077. [PMID: 29965732 DOI: 10.1021/acs.inorgchem.8b00056] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A series of Salen-type Zn(II)-Dy(III) complexes [L1Zn(II)ClDy(III)(acac)2]·H2O (1), [L1Zn(II)BrDy(III)(acac)2]·H2O (2), [L1Zn(II)(H2O)Dy(III)(acac)2]·CH2Cl2·PF6 (3), [L2Zn(II)(H2O)Dy(III)(acac)2]·PF6 (4), and Co(III)-Dy(III) complexes [L1Co(III)Br2Dy(III)(acac)2]·CH2Cl2 (5), [L2Co(III)Cl2Dy(III)(acac)Cl(MeO)] (6), [L2Co(III)Cl2Dy(III)(acac)Cl(H2O)] (7), and [L2Co(III)Cl2Dy(III)(NO3)2(MeO)] (8) heterobinuclear single-molecule magnets (SMMs) were synthesized and magnetically characterized. These complexes were constructed by incorporating diamagnetic Zn(II) and Co(III) ions with acetylacetone (acac) and compartmental Schiff-base ligands (H2L1 = N, N'-bis(2-oxy-3-methoxybenzylidene)-1,2-phenylenediamine; H2L2 = N, N'-bis(2-oxy-3-methoxybenzylidene)-1,2-diaminocyclohexane). In the Zn(II)-Dy(III) (1-4) system, the coordination environments of the Dy(III) ions are nearly identical, but the apical coordination atom to the Zn(II) ion is different. Complexes 1, 2, and 4 displayed no magnetic relaxation in the absence of external magnetic field, but complex 3 displayed more pronounced SMM behavior with a relaxation energy barrier Ueff/ kB 38 K and magnetic hysteresis at 1.8 K. The SMM performances of 5, 6, and 7 were enhanced significantly by incorporating an octahedral Co(III) instead of square-pyramidal Zn(II) and replacing one of acac- group around Dy(III) ion by a neutral O atom, displaying Ueff of 167, 118, and 75 K as well as magnetic hysteresis up to 3.5 K. These studies indicated that the remote diamagnetic Zn(II) and Co(III) ions played a key role, and the SMM properties were very strongly related to the special coordination atoms configuration around Dy(III) ion. When this coordination configuration around was broken as 8 exhibited, however, it resulted in a dramatically decreased SMM performance. From this work, the key factors that significantly affect the SMM performance of these heteronuclear Zn(II)/Co(III)-Dy(III) SMMs are unambiguously presented.
Collapse
Affiliation(s)
- Jing-Wei Yang
- Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education, School of Chemistry and Material Science , Heilongjiang University , 74 Xuefu Road , Harbin 150080 , P. R. China
| | - Yong-Mei Tian
- Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education, School of Chemistry and Material Science , Heilongjiang University , 74 Xuefu Road , Harbin 150080 , P. R. China
| | - Jin Tao
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology , Nanjing Normal University , Nanjing 210023 , China
| | - Peng Chen
- Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education, School of Chemistry and Material Science , Heilongjiang University , 74 Xuefu Road , Harbin 150080 , P. R. China
| | - Hong-Feng Li
- Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education, School of Chemistry and Material Science , Heilongjiang University , 74 Xuefu Road , Harbin 150080 , P. R. China
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology , Nanjing Normal University , Nanjing 210023 , China
| | - Peng-Fei Yan
- Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education, School of Chemistry and Material Science , Heilongjiang University , 74 Xuefu Road , Harbin 150080 , P. R. China
| | - Wen-Bin Sun
- Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education, School of Chemistry and Material Science , Heilongjiang University , 74 Xuefu Road , Harbin 150080 , P. R. China.,Key Laboratory of Chemical Engineering Process & Technology for High-Efficiency Conversion , 74 Xuefu Road , Harbin 150080 , P. R. China
| |
Collapse
|
87
|
Gass IA, Lu J, Asadi M, Lupton DW, Forsyth CM, Geoghegan BL, Moubaraki B, Cashion JD, Martin LL, Bond AM, Murray KS. Use of the TCNQF 4 2- Dianion in the Spontaneous Redox Formation of [Fe III (L - ) 2 ][TCNQF 4 ⋅- ]. Chempluschem 2018; 83:658-668. [PMID: 31950640 DOI: 10.1002/cplu.201800010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 02/12/2018] [Indexed: 11/08/2022]
Abstract
The reaction of [FeII (L. )2 ](BF4 )2 with Li2 TCNQF4 results in the formation of [FeIII (L- )2 ][TCNQF4 . - ] (1) where L. is the radical ligand, 4,4-dimethyl-2,2-di(2-pyridyl)oxazolidine-N-oxide and TCNQF4 is 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane. This has been characterised by X-ray diffraction, Raman and Fourier transform infrared (FTIR) spectroscopy, variable-temperature magnetic susceptibility, Mössbauer spectroscopy and electrochemistry. X-ray diffraction studies, magnetic susceptibility measurements and Raman and FTIR spectroscopy suggest the presence of low-spin FeIII ions, the anionic form (L- ) of the ligand and the anionic radical form of TCNQF4 ; viz. TCNQF4 . - . Li2 TCNQF4 reduces the [FeII (L. )2 ]2+ dication, which undergoes a reductively induced oxidation to form the [FeIII (L- )2 ]+ monocation resulting in the formation of [FeIII (L- )2 ][TCNQF4 . - ] (1), the electrochemistry of which revealed four well-separated, diffusion-controlled, one-electron, reversible processes. Mössbauer spectroscopy and electrochemical measurements suggest the presence of a minor second species, likely to be [FeII (L. )2 ][TCNQF4 2- ].
Collapse
Affiliation(s)
- Ian A Gass
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia.,School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, BN2 4GJ, United Kingdom
| | - Jinzhen Lu
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia
| | - Mousa Asadi
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia
| | - David W Lupton
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia
| | - Craig M Forsyth
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia
| | - Blaise L Geoghegan
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton, BN2 4GJ, United Kingdom
| | | | - John D Cashion
- School of Physics and Astronomy, Monash University, Clayton, VIC, 3800, Australia
| | - Lisandra L Martin
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia
| | - Alan M Bond
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia
| | - Keith S Murray
- School of Chemistry, Monash University, Clayton, VIC, 3800, Australia
| |
Collapse
|
88
|
Vasquez
Jaramillo JD, Hammar H, Fransson J. Electronically Mediated Magnetic Anisotropy in Vibrating Magnetic Molecules. ACS OMEGA 2018; 3:6546-6553. [PMID: 31458831 PMCID: PMC6644657 DOI: 10.1021/acsomega.8b00449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 05/10/2018] [Indexed: 06/10/2023]
Abstract
We address the electronically induced anisotropy field acting on a spin moment in a vibrating magnetic molecule located in the junction between ferromagnetic metals. Under weak coupling between the electrons and molecular vibrations, the nature of the anisotropy can be changed from favoring a high spin (easy-axis) magnetic moment to a low spin (easy plane) by applying a temperature difference or a voltage bias across the junction. For unequal spin polarizations in ferromagnetic metals, it is shown that the character of the anisotropy is essentially determined by the properties of the weaker ferromagnet. By increasing the temperature in this metal or introducing a voltage bias, its influence can be suppressed such that the dominant contribution to the anisotropy is interchanged to the stronger ferromagnet. With increasing coupling strength between the molecular vibrations and the electrons, the nature of the anisotropy is locked into favoring easy-plane magnetism.
Collapse
|
89
|
Calzado CJ, Rodríguez-García B, Galán Mascarós JR, Hernández NC. Electronic Structure and Magnetic Interactions in the Radical Salt [BEDT-TTF] 2[CuCl 4]. Inorg Chem 2018; 57:7077-7089. [PMID: 29877697 DOI: 10.1021/acs.inorgchem.7b03240] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The magnetic behavior and electric properties of the hybrid radical salt [BEDT-TTF]2[CuCl4] have been revisited through extended experimental analyses and DDCI and periodic DFT plane waves calculations. Single crystal X-ray diffraction data have been collected at different temperatures, discovering a phase transition occurring in the 250-300 K range. The calculations indicate the presence of intradimer, interdimer, and organic-inorganic π-d interactions in the crystal, a magnetic pattern much more complex than the Bleaney-Bowers model initially assigned to this material. Although this simple model was good enough to reproduce the magnetic susceptibility data, our calculations demonstrate that the actual magnetic structure is significantly more intricate, with alternating antiferromagnetic 1D chains of the organic BEDT-TTF+ radical, connected through weak antiferromagnetic interactions with the CuCl42- ions. Combination of experiment and theory allowed us to unambiguously determine and quantify the leading magnetic interactions in the system. The density-of-states curves confirm the semiconductor nature of the system and the dominant organic contribution of the valence and conduction band edges. This general and combined approach appears to be fundamental in order to properly understand the magnetic structure of these complex materials, where experimental data can actually be fitted from a variety of models and parameters.
Collapse
Affiliation(s)
- Carmen J Calzado
- Departamento de Química Física , Universidad de Sevilla , c/Profesor García González, s/n , E-41012 , Sevilla , Spain
| | - Bárbara Rodríguez-García
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology (BIST) , Av. Països Catalans, 16 , Tarragona , E-43007 , Spain
| | - José Ramón Galán Mascarós
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology (BIST) , Av. Països Catalans, 16 , Tarragona , E-43007 , Spain.,ICREA , Pg. Lluís Companys, 23 , E-08010 , Barcelona , Spain
| | - Norge Cruz Hernández
- Departamento de Física Aplicada I, Escuela Politécnica Superior , Universidad de Sevilla , Sevilla , E-41011 , Spain
| |
Collapse
|
90
|
Malenov DP, Zarić SD. Chelated metal ions modulate the strength and geometry of stacking interactions: energies and potential energy surfaces for chelate-chelate stacking. Phys Chem Chem Phys 2018; 20:14053-14060. [PMID: 29745942 DOI: 10.1039/c7cp06262a] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Quantum chemical calculations were performed on model systems of stacking interactions between the acac type chelate rings of nickel, palladium, and platinum. CCSD(T)/CBS calculations showed that chelate-chelate stacking interactions are significantly stronger than chelate-aryl and aryl-aryl stacking interactions. Interaction energy surfaces were calculated at the LC-ωPBE-D3BJ/aug-cc-pVDZ level, which gives energies in good agreement with CCSD(T)/CBS. The stacking of chelates in an antiparallel orientation is stronger than the stacking in a parallel orientation, which is in agreement with the larger number of antiparallel stacked chelates in crystal structures from the Cambridge Structural Database. The strongest antiparallel chelate-chelate stacking interaction is formed between two platinum chelates, with a CCSD(T)/CBS interaction energy of -9.70 kcal mol-1, while the strongest stacking between two palladium chelates and two nickel chelates has CCSD(T)/CBS energies of -9.21 kcal mol-1 and -9.50 kcal mol-1, respectively. The strongest parallel chelate-chelate stacking was found for palladium chelates, with a LC-ωPBE-D3BJ/aug-cc-pVDZ energy of -6.51 kcal mol-1. The geometries of the potential surface minima are not the same for the three metals. The geometries of the minima are governed by electrostatic interactions, which are the ones determining the positions of the energy minima. Electrostatic interactions are governed by different electrostatic potentials above the metals, which are very positive for nickel, slightly positive for palladium, and slightly negative for platinum.
Collapse
Affiliation(s)
- Dušan P Malenov
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade, Serbia.
| | | |
Collapse
|
91
|
Long J, Guari Y, Ferreira RA, Carlos LD, Larionova J. Recent advances in luminescent lanthanide based Single-Molecule Magnets. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.02.019] [Citation(s) in RCA: 150] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
92
|
Nguemdzi CFN, Capet F, Ngouné J, Bebga G, Foulon M, Nenwa J. Two tris(oxalato)ferrate(III) hybrid salts with pyridinium derivative isomers as counter cations: synthesis, crystal structures, thermal analyses, and magnetic properties. J COORD CHEM 2018. [DOI: 10.1080/00958972.2018.1463097] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
| | - Frédéric Capet
- Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, France
| | - Jean Ngouné
- Department of Chemistry, University of Dschang, Dschang, Cameroon
| | - Gouet Bebga
- Higher Teacher Training College, University of Yaounde 1, Yaounde, Cameroon
| | | | - Justin Nenwa
- Department of Inorganic Chemistry, University of Yaounde 1, Yaounde, Cameroon
| |
Collapse
|
93
|
Nakamura Y, Matsumoto T, Sakazume Y, Murata J, Chang HC. Tuning the Mesomorphism and Redox Response of Anionic-Ligand-Based Mixed-Valent Nickel(II) Complexes by Alkyl-Substituted Quaternary Ammonium Cations. Chemistry 2018; 24:7398-7409. [PMID: 29504636 DOI: 10.1002/chem.201706006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Indexed: 01/01/2023]
Abstract
The combination of the redox-active mesogenic anion [NiII (Bdt)(BdtSQ)]- (Bdt=1,2-benzenedithiolato; BdtSQ=1,2-dithia-semi-benzoquinonato) with alkyl-substituted ammonium cations afforded a series of redox-active ionic complexes of the type [NR4 ][NiII (Bdt)(BdtSQ)] [R=nC16 H33 (NC164 Ni) and C8,10 (NC8,104 Ni); C8,10=6-octylhexadecyl] or [NMe2 R2 ][NiII (Bdt)(BdtSQ)] [R=nC16 H33 (NMe2 C162 Ni) and C8,10 (NMe2 C8,102 Ni)]. X-ray crystallographic analyses of NMe2 C162 Ni and NC164 Ni revealed the formation of cation-dependent integrated ionic layers separated by interdigittated alkyl chains. Complexes NMe2 C162 Ni and NC164 Ni commonly form crystalline phases at room temperature, whereas complexes NMe2 C8,102 Ni and NC8,104 Ni, which contain branched alkyl chains, form a metastable mesophase and an amorphous phase at the same temperature, respectively. Furthermore, complexes NMe2 C162 Ni, NMe2 C8,102 Ni, and NC164 Ni commonly form a smectic A phase (SmA) at 375, 317, and 342 K, respectively. For the four complexes, well-defined cyclic voltammetry responses, derived from ligand-based oxidation and reduction, were observed in solution and the condensed phases, that is, upon casting these complexes on an indium-doped tin oxide working electrode. The present study demonstrates the tunability of the mesomorphism of ionic molecular assemblies composed of alkyl-substituted quaternary ammonium cations, while maintaining the well-defined redox responses of the anions even in the condensed phases.
Collapse
Affiliation(s)
- Yuichi Nakamura
- 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
| | - Yasutaka Sakazume
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo, 112-8551, Japan
| | - Junnosuke Murata
- 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
| |
Collapse
|
94
|
Huang XD, Kurmoo M, Bao SS, Fan K, Xu Y, Hu ZB, Zheng LM. Coupling photo-, mechano- and thermochromism and single-ion-magnetism of two mononuclear dysprosium-anthracene-phosphonate complexes. Chem Commun (Camb) 2018. [PMID: 29537016 DOI: 10.1039/c8cc00220g] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
DyIII(depma)3(NO3)3 (1) and DyIII(depma)4(NO3)2(CF3SO3) (2) differ structurally by the number of depma ligands and the supramolecular interactions (π-π and C-Hπ, respectively) between anthracene moieties. They exhibit single-ion-magnetism which is coupled to photo- and mechanochromism that are partially reversible by thermal annealing. The changes are associated with the formation and destruction of excimers.
Collapse
Affiliation(s)
- Xin-Da Huang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, P. R. China.
| | | | | | | | | | | | | |
Collapse
|
95
|
Nishi M, Ishii R, Ikeda M, Hanasaki N, Hoshino N, Akutagawa T, Sumimoto M, Matsuda M. An electrically conducting crystal composed of an octahedrally ligated porphyrin complex with high-spin iron(iii). Dalton Trans 2018; 47:4070-4075. [PMID: 29417967 DOI: 10.1039/c7dt04649a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A porphyrin-based octahedrally ligated complex with high-spin iron(iii) was designed, and the resulting electrically conducting crystal TPP[FeIII(tbp)Br2]2 (TPP = tetraphenylphosphonium and tbp = tetrabenzoporphyrin) was synthesised. Although TPP[Fe(tbp)Br2]2 was isostructural to the reported TPP[Fe(Mc)L2]2 systems (Mc = macrocyclic ligands such as phthalocyanine (Pc) or tbp; and L = CN, Cl, or Br), the bond lengths between Fe and ligands in the [Fe(tbp)Br2] unit were evidently longer than those in the other units, because of the different spin states of Fe: high-spin in TPP[Fe(tbp)Br2]2 and low-spin in others. The magnetic anisotropy observed in the low-spin state vanished when the Fe is in the high-spin state. Based on reports for Pc-based systems, the negative magnetoresistance (MR) effect for TPP[Fe(tbp)Br2]2 was expected to be smaller than that for TPP[Fe(tbp)(CN)2]2. However, the former showed a giant negative MR effect similar to or larger than the latter, suggesting that the nature of iron is a crucial factor for the electrical properties of porphyrin-based materials.
Collapse
Affiliation(s)
- Miki Nishi
- Department of Chemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan.
| | - Ryuta Ishii
- Department of Physics, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Mitsuo Ikeda
- Department of Physics, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Noriaki Hanasaki
- Department of Physics, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Norihisa Hoshino
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Tomoyuki Akutagawa
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Michinori Sumimoto
- Graduate School of Science and Technology for Innovation, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan
| | - Masaki Matsuda
- Department of Chemistry, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan.
| |
Collapse
|
96
|
Mínguez Espallargas G, Coronado E. Magnetic functionalities in MOFs: from the framework to the pore. Chem Soc Rev 2018; 47:533-557. [PMID: 29112210 DOI: 10.1039/c7cs00653e] [Citation(s) in RCA: 465] [Impact Index Per Article: 77.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
In this review, we show the different approaches developed so far to prepare metal-organic frameworks (MOFs) presenting electronic functionalities, with particular attention to magnetic properties. We will cover the chemical design of frameworks necessary for the incorporation of different magnetic phenomena, as well as the encapsulation of functional species in their pores leading to hybrid multifunctional MOFs combining an extended lattice with a molecular lattice.
Collapse
Affiliation(s)
- Guillermo Mínguez Espallargas
- Instituto de Ciencia Molecular (ICMol), Universidad de Valencia, c/Catedrático José Beltrán, 2, 46980 Paterna, Spain.
| | | |
Collapse
|
97
|
Kushch ND, Buravov LI, Kushch PP, Shilov GV, Yamochi H, Ishikawa M, Otsuka A, Shakin AA, Maximova OV, Volkova OS, Vasiliev AN, Yagubskii EB. Multifunctional Compound Combining Conductivity and Single-Molecule Magnetism in the Same Temperature Range. Inorg Chem 2018; 57:2386-2389. [PMID: 29465234 DOI: 10.1021/acs.inorgchem.7b03152] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report the first highly conducting single-molecule magnet, (BEDO)4[ReF6]·6H2O [1; BEDO = bis(ethylenedioxo)tetrathiafulvalene], whose conductivity and single-molecule magnetism coexist in the same temperature range. The compound was synthesized by BEDO electrocrystallization in the presence of (Ph4P)2[ReF6]·2H2O and characterized by crystallography and measurements of the conductivity and alternating-current magnetic susceptibility.
Collapse
Affiliation(s)
- Nataliya D Kushch
- Institute of Problems of Chemical Physics , Russian Academy of Sciences , Chernogolovka 142432 , Russia
| | - Lev I Buravov
- Institute of Problems of Chemical Physics , Russian Academy of Sciences , Chernogolovka 142432 , Russia
| | - Pavel P Kushch
- Institute of Problems of Chemical Physics , Russian Academy of Sciences , Chernogolovka 142432 , Russia
| | - Gennadii V Shilov
- Institute of Problems of Chemical Physics , Russian Academy of Sciences , Chernogolovka 142432 , Russia
| | - Hideki Yamochi
- Division of Chemistry, Graduate School of Science , Kyoto University , Sakyo-ku, Kyoto 606-8502 , Japan.,Research Center for Low Temperature and Materials Sciences , Kyoto University , Sakyo-ku, Kyoto 606-8501 , Japan
| | - Manabu Ishikawa
- Research Center for Low Temperature and Materials Sciences , Kyoto University , Sakyo-ku, Kyoto 606-8501 , Japan
| | - Akihiro Otsuka
- Division of Chemistry, Graduate School of Science , Kyoto University , Sakyo-ku, Kyoto 606-8502 , Japan.,Research Center for Low Temperature and Materials Sciences , Kyoto University , Sakyo-ku, Kyoto 606-8501 , Japan
| | - Alexander A Shakin
- National University of Science and Technology "MISiS" , Moscow 119049 , Russia
| | - Olga V Maximova
- National University of Science and Technology "MISiS" , Moscow 119049 , Russia.,Lomonosov Moscow State University , Moscow 119991 , Russia
| | - Olga S Volkova
- National University of Science and Technology "MISiS" , Moscow 119049 , Russia.,Lomonosov Moscow State University , Moscow 119991 , Russia
| | - Alexander N Vasiliev
- National University of Science and Technology "MISiS" , Moscow 119049 , Russia.,Lomonosov Moscow State University , Moscow 119991 , Russia.,National Research South Ural State University , Chelyabinsk 454080 , Russia
| | - Eduard B Yagubskii
- Institute of Problems of Chemical Physics , Russian Academy of Sciences , Chernogolovka 142432 , Russia
| |
Collapse
|
98
|
Xing Y, Liu Y, Xue X, Wang X, Li W. Copper and manganese complexes based on 1,4-naphthalene dicarboxylic acid ligand and its derivative: Syntheses, crystal structures, and magnetic properties. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.09.048] [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]
|
99
|
Kosaka W, Takahashi Y, Nishio M, Narushima K, Fukunaga H, Miyasaka H. Magnetic Sponge with Neutral-Ionic Phase Transitions. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2018; 5:1700526. [PMID: 29619302 PMCID: PMC5827013 DOI: 10.1002/advs.201700526] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 09/21/2017] [Indexed: 06/08/2023]
Abstract
Phase transitions caused by the charge instability between the neutral and ionic phases of compounds, i.e., N-I phase transitions, provide avenues for switching the intrinsic properties of compounds related to electron/spin correlation and dipole generation as well as charge distribution. However, it is extremely difficult to control the transition temperature (Tc) for the N-I phase transition, and only chemical modification based on the original material have been investigated. Here, a design overview of the tuning of N-I phase transition by interstitial guest molecules is presented. This study reports a new chain coordination-polymer [Ru2(3,4-Cl2PhCO2)4TCNQ(EtO)2]∙DCE (1-DCE; 3,4-Cl2PhCO2- = 3,4-dichlorobenzoate; TCNQ(EtO)2 2,5-diethoxy-7,7,8,8-tetracyanoquinodimethane; and DCE = 1,2-dichloroethane) that exhibits a one-step N-I transition at 230 K (= Tc) with the N- and I-states possessing a simple paramagnetic state and a ferrimagnetically correlated state for the high- and low-temperature phases, respectively. The Tc continuously decreases depending on the content of DCE, which eventually disappears with the complete evacuation of DCE, affording solvent-free compound 1 with the N-state in the entire temperature range (this behavior is reversible). This is an example of tuning the in situ Tc for the N-I phase transition via the control of the interstitial guest molecules.
Collapse
Affiliation(s)
- Wataru Kosaka
- Institute for Materials ResearchTohoku University2‐1‐1 Katahira, Aoba‐kuSendai980‐8577Japan
- Department of ChemistryGraduate School of ScienceTohoku University6‐3 Aramaki, Aza‐Aoba, Aoba‐kuSendai980‐8578Japan
| | - Yusuke Takahashi
- Department of ChemistryGraduate School of ScienceTohoku University6‐3 Aramaki, Aza‐Aoba, Aoba‐kuSendai980‐8578Japan
| | - Masaki Nishio
- Department of ChemistryDivision of Material SciencesGraduate School of Natural Science and TechnologyKanazawa UniversityKakuma‐machiKanazawa920‐1192Japan
| | - Keisuke Narushima
- Department of ChemistryGraduate School of ScienceTohoku University6‐3 Aramaki, Aza‐Aoba, Aoba‐kuSendai980‐8578Japan
| | - Hiroki Fukunaga
- Department of ChemistryGraduate School of ScienceTohoku University6‐3 Aramaki, Aza‐Aoba, Aoba‐kuSendai980‐8578Japan
| | - Hitoshi Miyasaka
- Institute for Materials ResearchTohoku University2‐1‐1 Katahira, Aoba‐kuSendai980‐8577Japan
- Department of ChemistryGraduate School of ScienceTohoku University6‐3 Aramaki, Aza‐Aoba, Aoba‐kuSendai980‐8578Japan
| |
Collapse
|
100
|
Keshri SK, Asthana D, Chorol S, Kumar Y, Mukhopadhyay P. Appending Diverse π-Extended Acceptors with Tetrathiafulvalene/Dithiafulvalene Donors: Multistate Redox Properties, Radical Ion Generation, and Mid-IR-Absorbing Mixed-Valence States. Chemistry 2018; 24:1821-1832. [DOI: 10.1002/chem.201704604] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Indexed: 02/05/2023]
Affiliation(s)
- Sudhir Kumar Keshri
- Supramolecular and Material Chemistry Lab, School of Physical Sciences; Jawaharlal Nehru University; New Delhi 110 067 India
| | - Deepak Asthana
- Supramolecular and Material Chemistry Lab, School of Physical Sciences; Jawaharlal Nehru University; New Delhi 110 067 India
| | - Sonam Chorol
- Supramolecular and Material Chemistry Lab, School of Physical Sciences; Jawaharlal Nehru University; New Delhi 110 067 India
| | - Yogendra Kumar
- Supramolecular and Material Chemistry Lab, School of Physical Sciences; Jawaharlal Nehru University; New Delhi 110 067 India
| | - Pritam Mukhopadhyay
- Supramolecular and Material Chemistry Lab, School of Physical Sciences; Jawaharlal Nehru University; New Delhi 110 067 India
| |
Collapse
|