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Wang R, Ko CH, Brugh AM, Bai Y, Forbes MDE, Therien MJ. Topology, Distance, and Orbital Symmetry Effects on Electronic Spin-Spin Couplings in Rigid Molecular Systems: Implications for Long-Distance Spin-Spin Interactions. J Phys Chem A 2020; 124:7411-7415. [PMID: 32794775 DOI: 10.1021/acs.jpca.0c06112] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Understanding factors that underpin the signs and magnitudes of electron spin-spin couplings in biradicaloids, especially those that are integrated into highly delocalized electronic structures, promises to inform the design of molecular spintronic systems. Using steady-state and variable temperature electron paramagnetic resonance (EPR) spectroscopy, we examine spin dynamics in symmetric, strongly π-conjugated bis[(porphinato)copper] (bis[PCu]) systems and probe the roles played by atom-specific macrocycle spin density, porphyrin-to-porphyrin linkage topology, and orbital symmetry on the magnitudes of electronic spin-spin couplings over substantial Cu-Cu distances. These studies examine the following: (i) meso-to-meso-linked bis[PCu] systems having oligoyne spacers, (ii) meso-to-meso-bridged bis[PCu] arrays in which the PCu centers are separated by a single ethynyl unit or multiple 5,15-diethynyl(porphinato)zinc(II) units, and (iii) the corresponding β-to-β-bridged bis[PCu] structures. EPR data show that, for β-to-β-bridged systems and meso-to-meso-linked bis[PCu] structures having oligoyne spacers, a through σ-bond coupling mechanism controls the average exchange interaction (Javg). In contrast, PCu centers separated by a single ethynyl or multiple 5,15-diethynyl(porphinato)zinc(II) units display a phenomenological decay of ln[Javg] versus Cu-Cu σ-bond separation number of ∼0.115 per bond, half as large as for these other compositions, congruent with the importance of π-mediated spin-spin coupling. These disparities derive from effects that trace their origin to the nature of the macrocycle-macrocycle linkage topology and the relative energy of the Cu dx2-y2 singly occupied molecular orbital within the frontier orbital manifold of these electronically delocalized structures. This work provides insight into approaches to tune the extent of spin exchange interactions and distance-dependent electronic spin-spin coupling magnitudes in rigid, highly conjugated biradicaloids.
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Affiliation(s)
- Ruobing Wang
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Chih-Hung Ko
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Alexander M Brugh
- Center for Pure & Applied Photosciences and Department of Chemistry, Bowling Green State University, Bowling Green, Ohio 43403, United States
| | - Yusong Bai
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Malcolm D E Forbes
- Center for Pure & Applied Photosciences and Department of Chemistry, Bowling Green State University, Bowling Green, Ohio 43403, United States
| | - Michael J Therien
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
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Molecular magnetism, quo vadis? A historical perspective from a coordination chemist viewpoint☆. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.03.004] [Citation(s) in RCA: 240] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Bhat PB, Rajarao R, Sahajwalla V, Bhat BR. Immobilized magnetic nano catalyst for oxidation of alcohol. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2015.08.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Castellano M, Ruiz-García R, Cano J, Ferrando-Soria J, Pardo E, Fortea-Pérez FR, Stiriba SE, Barros WP, Stumpf HO, Cañadillas-Delgado L, Pasán J, Ruiz-Pérez C, de Munno G, Armentano D, Journaux Y, Lloret F, Julve M. Metallosupramolecular approach toward multifunctional magnetic devices for molecular spintronics. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2015.05.013] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Déniel K, Nebbali K, Cosquer N, Conan F, Gómez-García CJ, Yefsah S, Triki S. Polypyridyl-based Cu(II) coordination polymers: Synthesis, structural and magnetic characterizations. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.05.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Feldscher B, Stammler A, Bögge H, Glaser T. Aromatic Versus Heteroradialene Character in Extended Thiophloroglucinol Ligands and their Trinuclear Nickel(II) Complexes. Chem Asian J 2014; 9:2205-18. [DOI: 10.1002/asia.201402272] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Indexed: 11/11/2022]
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Madalan AM, Cao XY, Rogez G, Lehn JM. Ferromagnetic coupling in copper(II) [2 × 2] grid-like complexes. Inorg Chem 2014; 53:4275-7. [PMID: 24749519 DOI: 10.1021/ic500285m] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Two copper(II) [2 × 2] grid-like complexes were synthesized and structurally characterized. Investigation of the magnetic properties showed for both the occurrence of intramolecular ferromagnetic interactions.
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Affiliation(s)
- Augustin M Madalan
- Institut de Science et d'Ingénierie Supramoléculaires, Université de Strasbourg , 8 allée Gaspard Monge, 67000 Strasbourg, France
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Feldscher B, Theil H, Stammler A, Bögge H, Glaser T. A streamlined synthesis of extended thiophloroglucinol ligands and their trinuclear NiII3 complexes. Dalton Trans 2014; 43:4102-14. [DOI: 10.1039/c3dt53457j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ferrando-Soria J, Castellano M, Ruiz-García R, Cano J, Julve M, Lloret F, Ruiz-Pérez C, Pasán J, Cañadillas-Delgado L, Armentano D, Journaux Y, Pardo E. Dicopper(II) Metallacyclophanes with Electroswitchable Polymethyl-Substitutedpara-Phenylene Spacers. Chemistry 2013; 19:12124-37. [DOI: 10.1002/chem.201204484] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Revised: 05/23/2013] [Indexed: 12/22/2022]
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Castellano M, Fortea-Pérez FR, Bentama A, Stiriba SE, Julve M, Lloret F, De Munno G, Armentano D, Li Y, Ruiz-García R, Cano J. Dicopper(II) Metallacyclophanes with Oligo(p-phenylene-ethynylene) Spacers: Experimental Foundations and Theoretical Predictions on Potential Molecular Magnetic Wires. Inorg Chem 2013; 52:7645-57. [DOI: 10.1021/ic400754m] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | | | | | - Giovanni De Munno
- Centro di Eccellenza CEMIF.CAL, Dipartimento di Chimica, Università della Calabria, 87030 Cosenza, Italy
| | - Donatella Armentano
- Centro di Eccellenza CEMIF.CAL, Dipartimento di Chimica, Università della Calabria, 87030 Cosenza, Italy
| | - Yangling Li
- Institut Parisien de Chimie Moléculaire, CNRS, UMR 7201, UPMC Univ
Paris 06, 75252 Paris, France
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Exchange coupling mediated by extended phloroglucinol ligands: Spin-polarization vs. heteroradialene-formation. Coord Chem Rev 2013. [DOI: 10.1016/j.ccr.2012.05.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Wöhlert S, Wriedt M, Fic T, Tomkowicz Z, Haase W, Näther C. Synthesis, Crystal Structure, and Magnetic Properties of the Coordination Polymer [Fe(NCS)2(1,2-bis(4-pyridyl)-ethylene)]n Showing a Two Step Metamagnetic Transition. Inorg Chem 2012; 52:1061-8. [DOI: 10.1021/ic302370n] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Susanne Wöhlert
- Institut für Anorganische
Chemie, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Strasse 2, D-24118 Kiel, Germany
| | - Mario Wriedt
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Tomasz Fic
- Institute
of Physics, Jagiellonian University, Reymonta
4, 30-059 Kraków,
Poland
| | - Zbigniew Tomkowicz
- Institute
of Physics, Jagiellonian University, Reymonta
4, 30-059 Kraków,
Poland
| | - Wolfgang Haase
- Eduard-Zintl-Institut
für
Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Petersenstrasse 20, D-64287 Darmstadt, Germany
| | - Christian Näther
- Institut für Anorganische
Chemie, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Strasse 2, D-24118 Kiel, Germany
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Turba S, Foxon SP, Beitat A, Heinemann FW, Petukhov K, Müller P, Walter O, Lloret F, Julve M, Schindler S. Syntheses, Characterization, and Magnetic Studies of Copper(II) Complexes with the Ligand N,N,N′,N′-Tetrakis(2-pyridylmethyl)-1,3-benzenediamine (1,3-tpbd) and its Phenol Derivative 2,6-Bis[bis(2-pyridylmethyl)amino]-p-cresol] (2,6-Htpcd). Inorg Chem 2011; 51:88-97. [DOI: 10.1021/ic201051g] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sabrina Turba
- Institut für Anorganische
und Analytische Chemie, Justus-Liebig-Universität Gießen, Heinrich-Buff-Ring 58, 35392 Gießen,
Germany
| | - Simon P. Foxon
- Institut für Anorganische
und Analytische Chemie, Justus-Liebig-Universität Gießen, Heinrich-Buff-Ring 58, 35392 Gießen,
Germany
| | - Alexander Beitat
- Institut für Anorganische
und Analytische Chemie, Justus-Liebig-Universität Gießen, Heinrich-Buff-Ring 58, 35392 Gießen,
Germany
| | - Frank W. Heinemann
- Institut für
Anorganische
Chemie, Universität Erlangen-Nürnberg, Egerlandstrasse 1, 91058 Erlangen, Germany
| | - Konstantin Petukhov
- Physikalisches Institut III, Universität Erlangen-Nürnberg, Erwin-Rommel-Strasse
1, 91058 Erlangen, Germany
| | - Paul Müller
- Physikalisches Institut III, Universität Erlangen-Nürnberg, Erwin-Rommel-Strasse
1, 91058 Erlangen, Germany
| | - Olaf Walter
- Institut für Technische
Chemie−Chemisch-Physikalische Verfahren (ITC-CPV), Forschungszentrum Karlsruhe, Postfach 3640, 76021 Karlsruhe,
Germany
| | - Francesc Lloret
- Instituto de Ciencia
Molecular, Universidad de Valencia, C/
Catedrático José
Beltrán 2, 46980 Paterna (Valencia), Spain
| | - Miguel Julve
- Instituto de Ciencia
Molecular, Universidad de Valencia, C/
Catedrático José
Beltrán 2, 46980 Paterna (Valencia), Spain
| | - Siegfried Schindler
- Institut für Anorganische
und Analytische Chemie, Justus-Liebig-Universität Gießen, Heinrich-Buff-Ring 58, 35392 Gießen,
Germany
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Frensch LK, Pröpper K, John M, Demeshko S, Brückner C, Meyer F. Siamesisches Zwillingsporphyrin: ein Pyrazol-expandiertes Porphyrin mit Bindungstaschen für Dimetallkomplexe. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201005780] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Frensch LK, Pröpper K, John M, Demeshko S, Brückner C, Meyer F. Siamese-Twin Porphyrin: A Pyrazole-Based Expanded Porphyrin Providing a Bimetallic Cavity. Angew Chem Int Ed Engl 2011; 50:1420-4. [DOI: 10.1002/anie.201005780] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2010] [Indexed: 11/11/2022]
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Rigamonti L, Forni A, Pievo R, Reedijk J, Pasini A. Synthesis, crystal structures and magnetic properties of dinuclear copper(ii) compounds with NNO tridentate Schiff base ligands and bridging aliphatic diamine and aromatic diimine linkers. Dalton Trans 2011; 40:3381-93. [DOI: 10.1039/c0dt01304h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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18
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Pardo E, Ferrando-Soria J, Dul MC, Lescouëzec R, Journaux Y, Ruiz-García R, Cano J, Julve M, Lloret F, Cañadillas-Delgado L, Pasán J, Ruiz-Pérez C. Oligo-m-phenyleneoxalamide Copper(II) Mesocates as Electro-Switchable Ferromagnetic Metal-Organic Wires. Chemistry 2010; 16:12838-51. [DOI: 10.1002/chem.201001737] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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19
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Ferrando-Soria J, Castellano M, Yuste C, Lloret F, Julve M, Fabelo O, Ruiz-Pérez C, Stiriba SE, Ruiz-García R, Cano J. Long-distance magnetic coupling in dinuclear copper(II) complexes with oligo-para-phenylenediamine bridging ligands. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2009.12.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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