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Giraldo JN, Hrubý J, Vavrečková Š, Fellner OF, Havlíček L, Henry D, de Silva S, Herchel R, Bartoš M, Šalitroš I, Santana VT, Barbara P, Nemec I, Neugebauer P. Tetracoordinate Co(II) complexes with semi-coordination as stable single-ion magnets for deposition on graphene. Phys Chem Chem Phys 2023; 25:29516-29530. [PMID: 37901907 PMCID: PMC10631493 DOI: 10.1039/d3cp01426f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 10/03/2023] [Indexed: 10/31/2023]
Abstract
We present a theoretical and experimental study of two tetracoordinate Co(II)-based complexes with semi-coordination interactions, i.e., non-covalent interactions involving the central atom. We argue that such interactions enhance the thermal and structural stability of the compounds, making them appropriate for deposition on substrates, as demonstrated by their successful deposition on graphene. DC magnetometry and high-frequency electron spin resonance (HF-ESR) experiments revealed an axial magnetic anisotropy and weak intermolecular antiferromagnetic coupling in both compounds, supported by theoretical predictions from complete active space self-consistent field calculations complemented by N-electron valence state second-order perturbation theory (CASSCF-NEVPT2), and broken-symmetry density functional theory (BS-DFT). AC magnetometry demonstrated that the compounds are field-induced single-ion magnets (SIMs) at applied static magnetic fields, with slow relaxation of magnetization governed by a combination of quantum tunneling, Orbach, and direct relaxation mechanisms. The structural stability under ambient conditions and after deposition was confirmed by X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. Theoretical modeling by DFT of different configurations of these systems on graphene revealed n-type doping of graphene originating from electron transfer from the deposited molecules, confirmed by electrical transport measurements and Raman spectroscopy.
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Affiliation(s)
- Jorge Navarro Giraldo
- Central European Institute of Technology, CEITEC BUT, Purkyňova 656/123, 61200 Brno, Czech Republic.
| | - Jakub Hrubý
- Central European Institute of Technology, CEITEC BUT, Purkyňova 656/123, 61200 Brno, Czech Republic.
| | - Šárka Vavrečková
- Central European Institute of Technology, CEITEC BUT, Purkyňova 656/123, 61200 Brno, Czech Republic.
- Institute of Physical Engineering, Faculty of Mechanical Engineering, Brno University of Technology, Technická 2, 61669 Brno, Czech Republic
| | - Ondřej F Fellner
- Department of Inorganic Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, 77147 Olomouc, Czech Republic
| | - Lubomír Havlíček
- Central European Institute of Technology, CEITEC BUT, Purkyňova 656/123, 61200 Brno, Czech Republic.
- Institute of Physics of Materials, Czech Academy of Sciences, Žižkova 22, 61662 Brno, Czech Republic
| | - DaVonne Henry
- Department of Physics, Georgetown University, Washington, DC, USA
| | - Shehan de Silva
- Department of Physics, Georgetown University, Washington, DC, USA
| | - Radovan Herchel
- Department of Inorganic Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, 77147 Olomouc, Czech Republic
| | - Miroslav Bartoš
- Central European Institute of Technology, CEITEC BUT, Purkyňova 656/123, 61200 Brno, Czech Republic.
| | - Ivan Šalitroš
- Central European Institute of Technology, CEITEC BUT, Purkyňova 656/123, 61200 Brno, Czech Republic.
- Department of Inorganic Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Bratislava SK-81237, Slovakia
| | - Vinicius T Santana
- Central European Institute of Technology, CEITEC BUT, Purkyňova 656/123, 61200 Brno, Czech Republic.
| | - Paola Barbara
- Department of Physics, Georgetown University, Washington, DC, USA
| | - Ivan Nemec
- Central European Institute of Technology, CEITEC BUT, Purkyňova 656/123, 61200 Brno, Czech Republic.
- Department of Inorganic Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, 77147 Olomouc, Czech Republic
| | - Petr Neugebauer
- Central European Institute of Technology, CEITEC BUT, Purkyňova 656/123, 61200 Brno, Czech Republic.
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Ji J, Li H, Liu C, Chen Y, Li R, Zhang Z. Synthesis, Crystal Structure, and Activity of Cu(II) and Zn(II) Complexes of 2-Mercaptoquinoline N-Oxide. RUSS J GEN CHEM+ 2023. [DOI: 10.1134/s1070363223010243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
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3
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Fabrication of a new 2D Co(II)-organic framework tuned by semi-flexible dicarboxylate and 1,4-bis(4-pyridinylmethyl)piperazine ligands: Topology, DFT/UB3LYP calculations, Hirshfeld surface analysis and magnetic studies. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129616] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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4
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Xiong X, Guan L, Wang Y, Liu C, Jin H, Chen Y, Wang X. Hydrothermal syntheses, crystal structures and properties of two H 2Tiron-bridged rare earth metal dinuclear complexes with 1,10-phenanthroline ligands. J COORD CHEM 2021. [DOI: 10.1080/00958972.2021.1894556] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Xuejia Xiong
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun, 113001, China
| | - Lei Guan
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun, 113001, China
| | - Ying Wang
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun, 113001, China
| | - Chang Liu
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun, 113001, China
| | - Hongzhe Jin
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun, 113001, China
| | - Yaxu Chen
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun, 113001, China
| | - Xin Wang
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun, 113001, China
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Li JX, Du ZX, Pan QY, Zhang LL, Liu DL. The first 3, 5, 6-trichloropyridine-2-oxyacetate bridged manganese coordination polymer with features of π⋯π stacking and halogen⋯halogen interactions: Synthesis, crystal analysis and magnetic properties. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119677] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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6
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Patel R, Patel S, Kumhar D, Patel N, Patel A, Jadeja R, Patel N, Butcher R, Cortijo M, Herrero S. Two new copper(II) binuclear complexes with 2-[(E)-(pyridine-2yl-hydrazono)methyl]phenol: Molecular structures, quantum chemical calculations, cryomagnetic properties and catalytic activity. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114687] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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7
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Goswami S, Singha S, Saha I, Chatterjee A, Dey SK, Gómez García CJ, Frontera A, Kumar S, Saha R. Selective Metal-Ligand Bond-Breaking Driven by Weak Intermolecular Interactions: From Metamagnetic Mn(III)-Monomer to Hexacyanoferrate(II)-Bridged Metamagnetic Mn 2Fe Trimer. Inorg Chem 2020; 59:8487-8497. [PMID: 32462868 DOI: 10.1021/acs.inorgchem.0c00909] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Metal-ligand coordination interactions are usually much stronger than weak intermolecular interactions. Nevertheless, here, we show experimental evidence and theoretical confirmation of a very rare example where metal-ligand bonds dissociate in an irreversible way, helped by a large number of weak intermolecular interactions that surpass the energy of the metal-ligand bond. Thus, we describe the design and synthesis of trinuclear Mn2Fe complex {[Mn(L)(H2O)]2Fe(CN)6},2- starting from a mononuclear Mn(III)-Schiff base complex: [Mn(L)(H2O)Cl] (1) and [Fe(CN)6]4- anions. This reaction implies the dissociation of Mn(III)-Cl coordination bonds and the formation of Mn(III)-NC bonds with the help of several intermolecular interactions. Here, we present the synthesis, crystal structure, and magnetic characterization of the monomeric Mn(III) complex [Mn(L)(H2O)Cl] (1) and of compound (H3O)[Mn(L)(H2O)2]{[Mn(L)(H2O)]2Fe(CN)6}·4H2O (2) (H2L = 2,2'-((1E,1'E)-(ethane-1,2-diylbis(azaneylylidene))bis(methaneylylidene))bis(4-methoxyphenol)). Complex 1 is a monomer where the Schiff base ligand (L) is coordinated to the four equatorial positions of the Mn(III) center with a H2O molecule and a Cl- ion at the axial sites and the monomeric units are assembled by π-π and hydrogen-bonding interactions to build supramolecular dimers. The combination of [Fe(CN)6]4- with complex 1 leads to the formation of linear Mn-NC-Fe-CN-Mn trimers where two trans cyano groups of the [Fe(CN)6]4- anion replace the labile chloride from the coordination sphere of two [Mn(L)(H2O)Cl] complexes, giving rise to the linear anionic {[Mn(L)(H2O)]2Fe(CN)6}2- trimer. This Mn2Fe trimer crystallizes with an oxonium cation and a mononuclear [Mn(L)(H2O)2]+ cation, closely related to the precursor neutral complex [Mn(L)(H2O)Cl]. In compound 2, the Mn2Fe trimers are assembled by several hydrogen-bonding and π-π interactions to frame an extended structure similar to that of complex 1. Density functional theoretical (DFT) calculations at the PBE1PBE-D3/def2-TZVP level show that the bond dissociation energy (-29.3 kcal/mol) for the Mn(III)-Cl bond is smaller than the summation of all the weak intermolecular interactions (-30.1 kcal/mol). Variable-temperature magnetic studies imply the existence of weak intermolecular antiferromagnetic couplings in both compounds, which can be can cancelled with a critical field of ca. 2.0 and 2.5 T at 2 K for compounds 1 and 2, respectively. The magnetic properties of compound 1 have been fit with a simple S = 2 monomer with g = 1.959, a weak zero-field splitting (|D| = 1.23 cm-1), and a very weak intermolecular interaction (zJ = -0.03 cm-1). For compound 2, we have used a model with an S = 2 monomer with ZFS plus an S = 2 antiferromagnetically coupled dimer with g = 2.009, |D| = 1.21 cm-1, and J = -0.42 cm-1. The metamagnetic behavior of both compounds is attributed to the weak intermolecular π-π and hydrogen-bonding interactions.
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Affiliation(s)
- Somen Goswami
- Department of Physics, Jadavpur University, Jadavpur, Kolkata-700032, India
| | - Soumen Singha
- Department of Physics, Jadavpur University, Jadavpur, Kolkata-700032, India
| | - Indrajit Saha
- Department of Chemistry, RKMRC, Narendrapur-700103, WB, India
| | | | - Subrata K Dey
- Department of Chemistry, Sidho-Kanho-Birsha University, Pururlia-723104, WB, India
| | - Carlos J Gómez García
- Departamento de Química Inorgánica, CMol. Universidad de Valencia, C/José Beltrán, 2, 46980 Paterna (Valencia), Spain
| | - Antonio Frontera
- Departament de Química, Universitat de les Illes Balears, Crta. de Valldemossa km 7.5, 07122 Palma de Mallorca (Baleares), Spain
| | - Sanjay Kumar
- Department of Physics, Jadavpur University, Jadavpur, Kolkata-700032, India
| | - Rajat Saha
- Department of Physics, Jadavpur University, Jadavpur, Kolkata-700032, India.,Department of Chemistry, Kazi Nazrul University, Asansol-713340, WB, India
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8
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Zheng LY, Chi YH, Shi JM, Zhang CC, Chen DZ. Study on adjacent radicals short contact interaction, spin density, overlap integral and strong anti-ferromagnetic coupling strength. Chem Phys 2018. [DOI: 10.1016/j.chemphys.2018.05.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Mahnke LK, Warzok U, Lin M, Näther C, Schalley CA, Bensch W. New Water-Soluble Cluster Compound {Zn(en)3}3[V15Sb6O42(H2O)]⋅ (Ethylenediamine)3⋅10 H2O as a Synthon for the Generation of Two New Antimonato Polyoxovanadates. Chemistry 2018; 24:5522-5528. [DOI: 10.1002/chem.201705732] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Lisa K. Mahnke
- Institut für Anorganische Chemie; Christian-Albrechts-Universität zu Kiel; Max-Eyth-Strasse 2 24118 Kiel Germany
| | - Ulrike Warzok
- Institut für Chemie und Biochemie; Freie Universität Berlin; Takustrasse 3 14195 Berlin Germany
| | - Mengxi Lin
- Institut für Anorganische Chemie; Christian-Albrechts-Universität zu Kiel; Max-Eyth-Strasse 2 24118 Kiel Germany
| | - Christian Näther
- Institut für Anorganische Chemie; Christian-Albrechts-Universität zu Kiel; Max-Eyth-Strasse 2 24118 Kiel Germany
| | - Christoph A. Schalley
- Institut für Chemie und Biochemie; Freie Universität Berlin; Takustrasse 3 14195 Berlin Germany
| | - Wolfgang Bensch
- Institut für Anorganische Chemie; Christian-Albrechts-Universität zu Kiel; Max-Eyth-Strasse 2 24118 Kiel Germany
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10
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Exchange interaction between S= 1/2 centers bridged by multiple noncovalent interactions: Contribution of the individual chemical pathways to the magnetic coupling. Polyhedron 2017. [DOI: 10.1016/j.poly.2016.12.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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11
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Wendt M, Polzin P, van Leusen J, Näther C, Kögerler P, Bensch W. In situ ligand exchange-mediated 0D/1D transformation of a polyoxovanadate. Dalton Trans 2017; 46:1618-1623. [DOI: 10.1039/c6dt04412c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The antimonato-polyoxovanadate {NiII(en)3}3[VIV15SbIII6O42(H2O)]·ca.15H2O was utilized as a synthon for the solvothermal in situ generation of the new compound {NiII(phen)3}2[{NiII(en)2}VIV15SbIII6O42(H2O)]·19H2O, a rearrangement induced by ligand metathesis.
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Affiliation(s)
- M. Wendt
- Institute of Inorganic Chemistry
- Christian-Albrechts University of Kiel
- 24118 Kiel
- Germany
| | - P. Polzin
- Institute of Inorganic Chemistry
- Christian-Albrechts University of Kiel
- 24118 Kiel
- Germany
| | - J. van Leusen
- Institute of Inorganic Chemistry
- RWTH Aachen University
- 52074 Aachen
- Germany
| | - C. Näther
- Institute of Inorganic Chemistry
- Christian-Albrechts University of Kiel
- 24118 Kiel
- Germany
| | - P. Kögerler
- Institute of Inorganic Chemistry
- RWTH Aachen University
- 52074 Aachen
- Germany
| | - W. Bensch
- Institute of Inorganic Chemistry
- Christian-Albrechts University of Kiel
- 24118 Kiel
- Germany
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12
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Hilbert J, Pienack N, Lühmann H, Näther C, Bensch W. Transition Metal Complexes with Linkage to the Thiostannate Units Forced by Suitable Amine Molecules. Z Anorg Allg Chem 2016. [DOI: 10.1002/zaac.201600318] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jessica Hilbert
- Institute of Inorganic Chemistry; Christian-Albrechts-University of Kiel; Max-Eyth-Str. 2 24118 Kiel Germany
| | - Nicole Pienack
- Institute of Inorganic Chemistry; Christian-Albrechts-University of Kiel; Max-Eyth-Str. 2 24118 Kiel Germany
| | - Henning Lühmann
- Institute of Inorganic Chemistry; Christian-Albrechts-University of Kiel; Max-Eyth-Str. 2 24118 Kiel Germany
| | - Christian Näther
- Institute of Inorganic Chemistry; Christian-Albrechts-University of Kiel; Max-Eyth-Str. 2 24118 Kiel Germany
| | - Wolfgang Bensch
- Institute of Inorganic Chemistry; Christian-Albrechts-University of Kiel; Max-Eyth-Str. 2 24118 Kiel Germany
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13
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Ahmed BM, Mezei G. From Ordinary to Extraordinary: Insights into the Formation Mechanism and pH-Dependent Assembly/Disassembly of Nanojars. Inorg Chem 2016; 55:7717-28. [DOI: 10.1021/acs.inorgchem.6b01172] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Basil M. Ahmed
- Department of Chemistry, Western Michigan University, Kalamazoo, Michigan 49008-5413, United States
| | - Gellert Mezei
- Department of Chemistry, Western Michigan University, Kalamazoo, Michigan 49008-5413, United States
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14
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Wendt M, Näther C, Bensch W. High Nuclearity Antimonato-Polyoxovanadate Cluster {V15 Sb6 O42 } as a Synthon for the Solvothermal in situ Generation of α- and β-{V14 Sb8 O42 } Isomers. Chemistry 2016; 22:7747-51. [PMID: 27061843 DOI: 10.1002/chem.201601401] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Indexed: 11/09/2022]
Abstract
New heteroatom polyoxovanadates (POVs) were synthesized by applying a water-soluble high-nuclearity cluster as new synthon. The [V15 Sb6 O42 ](6-) cluster shell exhibiting D3 symmetry was in situ transformed into completely different cluster shells, namely, the α-[V14 Sb8 O42 ](4-) isomer with D2d and the β-[V14 Sb8 O42 ](4-) isomer with D2h symmetry. The solvothermal reaction of {Ni(en)3 }3 [V15 Sb6 O42 (H2 O)x ]⋅15 H2 O (x=0 or 1; en=ethylenediamine) in water led to the crystallization of [{Ni(en)2 }2 V14 Sb8 O42 ]⋅5.5 H2 O containing the β-isomer. The addition of [Ni(phen)3 ](ClO4 )2 ⋅0.5 H2 O (phen=1,10-phenanthroline) to the reaction slurry gave the new compound {Ni(phen)3 }2 [V14 Sb8 O42 ]⋅phen⋅12 H2 O with the α-isomer. Both transformation reactions are complex due the change of symmetry, the chemical composition, and rearrangement of the VO5 square pyramids and Sb2 O5 handle-like moieties.
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Affiliation(s)
- Michael Wendt
- Institut für Anorganische Chemie, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Strasse 2, 24118, Kiel, Germany
| | - Christian Näther
- Institut für Anorganische Chemie, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Strasse 2, 24118, Kiel, Germany
| | - Wolfgang Bensch
- Institut für Anorganische Chemie, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Strasse 2, 24118, Kiel, Germany.
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15
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Chen XX, Qiao F, Wang CF, Chi YH, Cottrill E, Pan N, Shi JM, Zhu-Ge WW, Fu YX, Xu J, Qian XP. Synthesis, crystal structures, and magnetism of the binuclear radical complex [N-methylpyridinium] 2 [Ni(tdas) 2 ] 2. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2015.11.033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Adhikari S, Sahana A, Kumari B, Ganguly D, Das S, Banerjee PP, Banerjee G, Chattopadhyay A, Fondo M, Matalobos JS, Brandão P, Félix V, Das D. Molecular diversity in several pyridyl based Cu( ii) complexes: biophysical interaction and redox triggered fluorescence switch. NEW J CHEM 2016. [DOI: 10.1039/c6nj02381a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A novel approach for detection of intra-cellular Cu+inE. coliand human blood cells is reported. Studies on several pyridyl based Cu(ii) complexes and interaction of ct DNA with one of them are carried out for plausible application in biology concerning disruption of normal DNA activity.
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Affiliation(s)
| | - Animesh Sahana
- Department of Chemistry
- The University of Burdwan
- Burdwan
- India
| | - Babli Kumari
- Department of Chemistry
- The University of Burdwan
- Burdwan
- India
| | - Durba Ganguly
- Department of Chemistry
- Jadavpur University
- Kolkata-700032
- India
| | - Saurabh Das
- Department of Chemistry
- Jadavpur University
- Kolkata-700032
- India
| | | | - Gautam Banerjee
- Department of Zoology
- VisvaBharati University
- Santiniketan
- India
| | | | - Matilde Fondo
- Departamento de Quimica Inorganica
- Facultade de Quimica
- 15782 Santiago de Compostela
- Spain
| | | | - Paula Brandão
- Department of Chemistry
- CICECO – Aveiro Institute of Materials
- 3810-193 Aveiro
- Portugal
| | - Vítor Félix
- Department of Chemistry
- CICECO – Aveiro Institute of Materials
- 3810-193 Aveiro
- Portugal
- Department of Medical Sciences
| | - Debasis Das
- Department of Chemistry
- The University of Burdwan
- Burdwan
- India
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17
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Sengupta D, Saha Chowdhury N, Samanta S, Ghosh P, Seth SK, Demeshko S, Meyer F, Goswami S. Regioselective ortho Amination of Coordinated 2-(Arylazo)pyridine. Isolation of Monoradical Palladium Complexes of a New Series of Azo-Aromatic Pincer Ligands. Inorg Chem 2015; 54:11465-76. [DOI: 10.1021/acs.inorgchem.5b02110] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Debabrata Sengupta
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
| | - Nabanita Saha Chowdhury
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
| | - Subhas Samanta
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, Nadia, India
- Institut für Anorganische
Chemie, Georg-August-Universität Göttingen, Tammannstraße
4, 37077 Göttingen, Germany
| | - Pradip Ghosh
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
| | - Saikat Kumar Seth
- Department of Physics, Mugberia G. Mahavidyalaya, Bhupatinagar, Purba Medinipur 721425, India
| | - Serhiy Demeshko
- Institut für Anorganische
Chemie, Georg-August-Universität Göttingen, Tammannstraße
4, 37077 Göttingen, Germany
| | - Franc Meyer
- Institut für Anorganische
Chemie, Georg-August-Universität Göttingen, Tammannstraße
4, 37077 Göttingen, Germany
| | - Sreebrata Goswami
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
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18
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Qiao F, Wang CF, Chen XX, Wang P, Chi YH, Cottrill E, Pan N, Shi JM, Zhu-Ge WW, Fu YX, Qian XP, Xu J. Synthesis, crystal structure, and π–π stacking magnetism of the mononuclear radical complex [N-hydrogenpyridinium][Pd(mnt)2]. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.07.073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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19
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Nemec I, Marx R, Herchel R, Neugebauer P, van Slageren J, Trávníček Z. Field-induced slow relaxation of magnetization in a pentacoordinate Co(II) compound [Co(phen)(DMSO)Cl2]. Dalton Trans 2015; 44:15014-21. [PMID: 26229042 DOI: 10.1039/c5dt02162f] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The static and dynamic magnetic properties of a pentacoordinate [Co(phen)(DMSO)Cl2] compound (phen = 1,10'-phenanthroline, DMSO = dimethyl sulfoxide) were thoroughly studied by experimental (SQUID magnetometry and HF-EPR spectroscopy) and theoretical methods (DFT and CASSCF calculations). It has been found from temperature/field-dependent magnetization measurements that the studied compound possesses a large and negative magnetic anisotropy (D = -17(1) cm(-1)) with large rhombicity (E/D = 0.24(5)), and these experimental results are in agreement with ab initio calculations (D = -17.7 cm(-1), E/D = 0.31). Interdoublet resonances were not observed in the HF-EPR measurements, but the large rhombicity was confirmed (DEPR = -17.7 cm(-1) (fixed from CASSCF calculations), E/DEPR = 0.33). A frequency dependent out-of-phase susceptibility signal was observed only in a non-zero static magnetic field (B = 0.1 T) and the following parameters of slow-relaxation of magnetisation were derived from the experimental data: either the energy of spin reversal barrier, Ueff = 10.4 K, and the relaxation time, τ0 = 5.69 × 10(-9) s using the Debye model, or Ueff = 21.4-40.3 K and τ0 = 0.248-58.3 × 10(-9) based on a simplified model.
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Affiliation(s)
- Ivan Nemec
- Regional Centre of Advanced Technologies and Materials, Department of Inorganic Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, CZ-771 46 Olomouc, Czech Republic.
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Interplay between π···π stacking and cation···π interaction: a theoretical NMR study. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2015. [DOI: 10.1007/s13738-015-0663-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Wang CF, Qiao F, Chi YH, Shi JM, Cottrill E, Pan N, Zhu-ge WW, Fu YX, Xu J, Qian XP. Synthesis, crystal structure, and magnetism of the binuclear radical complex [N-hydrogenpyridinium]2[Ni(tdas)2]2. J COORD CHEM 2015. [DOI: 10.1080/00958972.2015.1084417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Chi-Feng Wang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of CleanProduction of Fine Chemicals, Shandong Normal University, Jinan, PR China
| | - Fang Qiao
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of CleanProduction of Fine Chemicals, Shandong Normal University, Jinan, PR China
| | - Yan-Hui Chi
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of CleanProduction of Fine Chemicals, Shandong Normal University, Jinan, PR China
| | - Jing-Min Shi
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of CleanProduction of Fine Chemicals, Shandong Normal University, Jinan, PR China
| | - Ethan Cottrill
- Department of Chemistry and Biochemistry, Center for Intelligent Chemical Instrumentation, Ohio University, Athens, OH, USA
| | - Ning Pan
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of CleanProduction of Fine Chemicals, Shandong Normal University, Jinan, PR China
| | - Wei-Wei Zhu-ge
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of CleanProduction of Fine Chemicals, Shandong Normal University, Jinan, PR China
| | - Yong-Xin Fu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of CleanProduction of Fine Chemicals, Shandong Normal University, Jinan, PR China
| | - Jun Xu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of CleanProduction of Fine Chemicals, Shandong Normal University, Jinan, PR China
| | - Xiao-Ping Qian
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of CleanProduction of Fine Chemicals, Shandong Normal University, Jinan, PR China
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Suppressing of slow magnetic relaxation in tetracoordinate Co(II) field-induced single-molecule magnet in hybrid material with ferromagnetic barium ferrite. Sci Rep 2015; 5:10761. [PMID: 26039085 PMCID: PMC4454148 DOI: 10.1038/srep10761] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 04/28/2015] [Indexed: 12/25/2022] Open
Abstract
The novel field-induced single-molecule magnet based on a tetracoordinate mononuclear heteroleptic Co(II) complex involving two heterocyclic benzimidazole (bzi) and two thiocyanido ligands, [Co(bzi)2(NSC)2], (CoL4), was prepared and thoroughly characterized. The analysis of AC susceptibility data resulted in the spin reversal energy barrier U = 14.7 cm−1, which is in good agreement with theoretical prediction, Utheor. = 20.2 cm−1, based on axial zero-field splitting parameter D = −10.1 cm−1 fitted from DC magnetic data. Furthermore, mutual interactions between CoL4 and ferromagnetic barium ferrite BaFe12O19 (BaFeO) in hybrid materials resulted in suppressing of slow relaxation of magnetization in CoL4 for 1:2, 1:1 and 2:1 mass ratios of CoL4 and BaFeO despite the lack of strong magnetic interactions between two magnetic phases.
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Masoodi HR, Zakarianezhad M, Bagheri S, Makiabadi B, Shool M. Substituent effects on some calculated NMR data in T-shaped configuration of benzene dimer. Chem Phys Lett 2014. [DOI: 10.1016/j.cplett.2014.09.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Su F, Lu L, Feng S, Zhu M. Self-assembly and magnetic properties of Ni(ii)/Co(ii) coordination polymers based on 1,4-bis(imidazol-1-yl)benzene and varying biphenyltetracarboxylates. CrystEngComm 2014. [DOI: 10.1039/c4ce01020e] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Five complexes of 1,4-bis(imidazol-1-yl)benzene, H4bptas and cobalt/nickel are synthesized via solvothermal reaction; both of them have intriguing interpenetrated architectures.
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Affiliation(s)
- Feng Su
- Institute of Molecular Science
- Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry
- Shanxi University
- Taiyuan, PR China
| | - Liping Lu
- Institute of Molecular Science
- Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry
- Shanxi University
- Taiyuan, PR China
| | - Sisi Feng
- Institute of Molecular Science
- Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry
- Shanxi University
- Taiyuan, PR China
| | - Miaoli Zhu
- Institute of Molecular Science
- Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry
- Shanxi University
- Taiyuan, PR China
- State Key Laboratory of Coordination Chemistry
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