1
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Börner M, Fuhrmann D, Klose J, Krautscheid H, Kersting B. Ethereal Hydroperoxides: Powerful Reagents for S-Oxygenation of Bridging Thiophenolate Functions. Inorg Chem 2021; 60:13517-13527. [PMID: 34415154 DOI: 10.1021/acs.inorgchem.1c01854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
S-Oxygenation of thiophenolate bridges by ethereal hydroperoxides was studied. [NiII2LS(PhCO2)]+ (1), where LS = macrocyclic aminethiolate supporting ligand, is S-oxygenated readily in a mixed methanol/acetonitrile solution with ether/dioxygen at room temperature in the presence of daylight. The reactions were found to depend strongly on the choice of the ether. Uptake of two O atoms occurs in dioxane to give a mixed thiolate/sulfinate complex [NiII2LSO2(PhCO2)]+ (2) containing the rare five-membered Ni(μ1,1-S)(μ1,2-OS)Ni core. In tetrahydrofuran, four O atoms are taken up by 1 to generate the bis(sulfinate) species [NiII2LSO4(PhCO2)]+ (3). A mono-S-oxygenated sulfenate intermediate can be detected by electrospray ionization mass spectrometry. The oxygenation reactions proceed in high yields without complex disintegration and invariably provide μ1,2-bridging sulfinates as established by spectroscopy (IR and UV/vis), X-ray crystallography, and accompanying density functional theory calculations. The oxygenation of the S atoms has a strong impact on the electronic structures of the nickel complexes. The monosulfinate complex 2 has an S = 2 ground state resulting from moderate ferromagnetic exchange coupling interactions (J = +15.7 cm-1; H = -2JS1S2), while an antiferromagnetic exchange interaction in 3 shows the presence of a ground state with spin S = 0 (J = -0.56 cm-1).
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Affiliation(s)
- Martin Börner
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany.,Leibniz-Institut für Oberflächenmodifizierung, Abteilung Funktionale Oberflächen, Permoserstrasse 15, D-04318 Leipzig, Germany
| | - Daniel Fuhrmann
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany
| | - Jennifer Klose
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany
| | - Harald Krautscheid
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany
| | - Berthold Kersting
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany
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2
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Mansel A, Franke K. Production of no-carrier-added 89Zr at an 18 MeV cyclotron, its purification and use in investigations in solvent extraction. J Radioanal Nucl Chem 2021. [DOI: 10.1007/s10967-021-07634-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AbstractThe chemical separation of zirconium from lanthanides by liquid–liquid extraction is challenging but critical for medical and technological applications. Using the example of 89Zr, we optimize the liquid–liquid-extraction process by means of the radiotracer technique. We produced 89Zr by proton irradiation of a metallic yttrium target at a cyclotron. The purification of the radionuclide was performed by a UTEVA resin. 89Zr was separated in no-carrier-added form in a sulfuric acid solution. 89Zr was successfully used in solvent extraction tests with calixarenes for the separation of zirconium from lanthanides. This reaction is suitable for the efficient extraction and purification of lanthanides.
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3
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Elaieb F, Sameni S, Awada M, Jeunesse C, Matt D, Toupet L, Harrowfield J, Takeuchi D, Takano S. Metallated Container Molecules: A Capsular Nickel Catalyst for Enhanced Butadiene Polymerisation. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201901074] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Fethi Elaieb
- Laboratoire de Chimie Inorganique Moléculaire et Catalyse UMR 7177 CNRS Université de Strasbourg 4, rue Blaise Pascal 67008 Strasbourg Cedex France
| | - Soheila Sameni
- Laboratoire de Chimie Inorganique Moléculaire et Catalyse UMR 7177 CNRS Université de Strasbourg 4, rue Blaise Pascal 67008 Strasbourg Cedex France
| | - Mouhamad Awada
- Laboratoire de Chimie Inorganique Moléculaire et Catalyse UMR 7177 CNRS Université de Strasbourg 4, rue Blaise Pascal 67008 Strasbourg Cedex France
| | - Catherine Jeunesse
- Laboratoire de Chimie Inorganique Moléculaire et Catalyse UMR 7177 CNRS Université de Strasbourg 4, rue Blaise Pascal 67008 Strasbourg Cedex France
| | - Dominique Matt
- Laboratoire de Chimie Inorganique Moléculaire et Catalyse UMR 7177 CNRS Université de Strasbourg 4, rue Blaise Pascal 67008 Strasbourg Cedex France
| | - Loic Toupet
- UMR 7177 CNRS Université de Rennes 1 Campus de Beaulieu 35042 Rennes Cedex France
| | - Jack Harrowfield
- ISIS, UMR 7606 CNRS UMR 7177 CNRS Université de Strasbourg 8, rue Gaspard Monge 67083 Strasbourg Cedex France
| | - Daisuke Takeuchi
- Department of Frontier Materials Chemistry Graduate School of Science and Technology Hirosaki University 3 Bunkyo‐cho 036‐8561 Hirosaki Aomori Japan
| | - Shigenaga Takano
- Laboratory for Chemistry and Life Science Graduate School of Science and Technology Tokyo Institute of Technology 4259 Nagatsuda 226‐8503 Yokohama Japan
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4
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Omoto K, Tashiro S, Shionoya M. Molecular recognition of planar and non-planar aromatic hydrocarbons through multipoint Ag-π bonding in a dinuclear metallo-macrocycle. Chem Sci 2019; 10:7172-7176. [PMID: 31588284 PMCID: PMC6764282 DOI: 10.1039/c9sc02619c] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 06/26/2019] [Indexed: 12/22/2022] Open
Abstract
Exploration of a novel structural motif of host-guest interactions is one of the most fundamental topics to develop macrocycle-based host-guest/supramolecular systems. Herein, we present an unprecedented mode of inclusion of aromatic hydrocarbons into a macrocyclic cavity via multipoint Ag-π bonding as a driving force. A dinuclear AgI-macrocycle encapsulated one molecule of anthracene, a typical planar aromatic hydrocarbon, in solution and in the solid state. Single-crystal X-ray diffraction analysis of the host-guest inclusion complex revealed the binding of anthracene via multipoint Ag-π bonding to both AgI ions arranged within the open-ended nano-cavity of the dinuclear AgI-macrocycle. Notably, this binding motif based on Ag-π bonding was also applied to the inclusion of triptycene, a non-planar aromatic hydrocarbon with a steric tripodal structure, to evaluate the rotational motion of the molecular paddle-wheel in the AgI-macrocycle.
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Affiliation(s)
- Kenichiro Omoto
- Department of Chemistry , Graduate School of Science , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku , Tokyo 113-0033 , Japan .
| | - Shohei Tashiro
- Department of Chemistry , Graduate School of Science , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku , Tokyo 113-0033 , Japan .
| | - Mitsuhiko Shionoya
- Department of Chemistry , Graduate School of Science , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku , Tokyo 113-0033 , Japan .
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5
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Omoto K, Tashiro S, Shionoya M. Host-Guest Interactions by Metal-to-Metal Dative Bonding: Recognition of Ruthenocene by a Metallo-Host. Z Anorg Allg Chem 2015. [DOI: 10.1002/zaac.201500630] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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6
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Jeremies A, Lehmann U, Gruschinski S, Schleife F, Meyer M, Matulis V, Ivashkevich OA, Handke M, Stein K, Kersting B. Cavitands Incorporating a Lewis Acid Dinickel Chelate Function as Receptors for Halide Anions. Inorg Chem 2015; 54:3937-50. [DOI: 10.1021/acs.inorgchem.5b00123] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alexander Jeremies
- Institut für
Anorganische Chemie, Universität Leipzig, Johannisallee
29, 04103 Leipzig, Germany
| | - Ulrike Lehmann
- Institut für
Anorganische Chemie, Universität Leipzig, Johannisallee
29, 04103 Leipzig, Germany
| | - Sina Gruschinski
- Institut für
Anorganische Chemie, Universität Leipzig, Johannisallee
29, 04103 Leipzig, Germany
| | - Frederik Schleife
- Institut für
Anorganische Chemie, Universität Leipzig, Johannisallee
29, 04103 Leipzig, Germany
| | - Michel Meyer
- Institut de Chimie Moléculaire de
l’Université de Bourgogne (ICMUB), UMR CNRS 6302, 9, avenue
Alain Savary, BP 47870, 21078 Dijon Cedex, France
| | - Vitaly Matulis
- Research
Institute for Physical Chemical Problems, Belarusian State University, Leningradskaya 14, 220030 Minsk, Belarus
| | | | - Marcel Handke
- Institut für
Anorganische Chemie, Universität Leipzig, Johannisallee
29, 04103 Leipzig, Germany
| | - Karolin Stein
- Institut für
Anorganische Chemie, Universität Leipzig, Johannisallee
29, 04103 Leipzig, Germany
| | - Berthold Kersting
- Institut für
Anorganische Chemie, Universität Leipzig, Johannisallee
29, 04103 Leipzig, Germany
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7
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Omoto K, Tashiro S, Kuritani M, Shionoya M. Multipoint recognition of ditopic aromatic guest molecules via Ag-π interactions within a dimetal macrocycle. J Am Chem Soc 2014; 136:17946-9. [PMID: 25479363 DOI: 10.1021/ja5106249] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A macrocyclic host molecule possessing a nanocavity with two Ag(I) centers for guest binding and four anthracene walls has been developed. This dimetal-macrocycle forms stable inclusion complexes with ditopic aromatic guest molecules, [2.2]paracyclophane, and ferrocene, in solution and/or in the solid state through Ag-π interactions within the nanocavity. The binding constants for the inclusion complexes were found to range roughly from 10(4) to 10(9) M(-1). Electrochemical measurement revealed that the oxidized form of the included cationic ferrocene was less stabilized due to the direct binding to the cationic two Ag(I) centers.
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Affiliation(s)
- Kenichiro Omoto
- Department of Chemistry, Graduate School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
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8
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Schnitter R, Gallego D, Kersting B. Selective complexation of α-amino acids and simple peptides via their carboxylate groups. Dalton Trans 2014; 43:13637-48. [DOI: 10.1039/c4dt02007c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Gout J, Rat S, Bistri O, Reinaud O. Supramolecular Control of Biomimetic Coordination - ZnIICavity Complexes Presenting Two Differentiated Labile Sites incisPositions. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402220] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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10
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Raynal M, Ballester P, Vidal-Ferran A, van Leeuwen PWNM. Supramolecular catalysis. Part 2: artificial enzyme mimics. Chem Soc Rev 2013; 43:1734-87. [PMID: 24365792 DOI: 10.1039/c3cs60037h] [Citation(s) in RCA: 663] [Impact Index Per Article: 60.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The design of artificial catalysts able to compete with the catalytic proficiency of enzymes is an intense subject of research. Non-covalent interactions are thought to be involved in several properties of enzymatic catalysis, notably (i) the confinement of the substrates and the active site within a catalytic pocket, (ii) the creation of a hydrophobic pocket in water, (iii) self-replication properties and (iv) allosteric properties. The origins of the enhanced rates and high catalytic selectivities associated with these properties are still a matter of debate. Stabilisation of the transition state and favourable conformations of the active site and the product(s) are probably part of the answer. We present here artificial catalysts and biomacromolecule hybrid catalysts which constitute good models towards the development of truly competitive artificial enzymes.
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Affiliation(s)
- Matthieu Raynal
- Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, 43007 Tarragona, Spain.
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11
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Golecki M, Lach J, Jeremies A, Lungwitz F, Fronk M, Salvan G, Zahn DRT, Park J, Krupskaya Y, Kataev V, Klingeler R, Büchner B, Mahns B, Knupfer M, Siles PF, Grimm D, Schmidt OG, Reis A, Thiel WR, Breite D, Abel B, Kersting B. Chemisorption of exchange-coupled [Ni2L(dppba)]+ complexes on gold by using ambidentate 4-(diphenylphosphino)benzoate co-ligands. Chemistry 2013; 19:7787-801. [PMID: 23595564 DOI: 10.1002/chem.201300496] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Indexed: 11/09/2022]
Abstract
A new strategy for the fixation of redox-active dinickel(II) complexes with high-spin ground states to gold surfaces was developed. The dinickel(II) complex [Ni2L(Cl)]ClO4 (1ClO4), in which L(2-) represents a 24-membered macrocyclic hexaaza-dithiophenolate ligand, reacts with ambidentate 4-(diphenylphosphino)benzoate (dppba) to form the carboxylato-bridged complex [Ni2L(dppba)](+), which can be isolated as an air-stable perchlorate [Ni2L(dppba)]ClO4 (2ClO4) or tetraphenylborate [Ni2L(dppba)]BPh4 (2BPh4) salt. The auration of 2ClO4 was probed on a molecular level, by reaction with AuCl, which leads to the monoaurated Ni(II)2Au(I) complex [Ni(II)2L(dppba)Au(I)Cl]ClO4 (3ClO4). Metathesis of 3ClO4 with NaBPh4 produces [Ni(II)2L(dppba)Au(I)Ph]BPh4 (4BPh4), in which the Cl(-) is replaced by a Ph(-) group. The complexes were fully characterized by ESI mass spectrometry, IR and UV/Vis spectroscopy, X-ray crystallography (2BPh4 and 4BPh4), cyclic voltammetry, SQUID magnetometry and HF-ESR spectroscopy. Temperature-dependent magnetic susceptibility measurements reveal a ferromagnetic coupling J = +15.9 and +17.9 cm(-1) between the two Ni(II) ions in 2ClO4 and 4BPh4 (H = -2 JS1S2). HF-ESR measurements yield a negative axial magnetic anisotropy (D<0), which implies a bistable (easy axis) magnetic ground state. The binding of the [Ni2L(dppba)]ClO4 complex to gold was ascertained by four complementary surface analytical methods: contact angle measurements, atomic-force microscopy, X-ray photoelectron spectroscopy, and spectroscopic ellipsometry. The results indicate that the complexes are attached to the Au surface through coordinative Au-P bonds in a monolayer.
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Affiliation(s)
- Matthias Golecki
- Institut für Anorganische Chemie, Universität Leipzig, 04103 Leipzig, Germany
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12
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Jankolovits J, Kampf JW, Pecoraro VL. Isolation of Elusive Tetranuclear and Pentanuclear M(II)–Hydroximate Intermediates in the Assembly of Lanthanide [15-Metallacrown-5] Complexes. Inorg Chem 2013; 52:5063-76. [DOI: 10.1021/ic302831u] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Joseph Jankolovits
- Department of Chemistry, University of Michigan, Ann Arbor, 930
North University Avenue, Ann Arbor, Michigan 48109-1055, United States
| | - Jeff W. Kampf
- Department of Chemistry, University of Michigan, Ann Arbor, 930
North University Avenue, Ann Arbor, Michigan 48109-1055, United States
| | - Vincent L. Pecoraro
- Department of Chemistry, University of Michigan, Ann Arbor, 930
North University Avenue, Ann Arbor, Michigan 48109-1055, United States
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13
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Lehmann U, Lach J, Schleife F, Jeremies A, Kersting B. The Effects of Ring Expansion and
N
‐Methylation on the Complexation Behaviour of Macrodinucleating Hexaaza‐Dithiophenolate Macrocycles: Destabilization of the Co
III
Oxidation Level and Lowering of the Coordination Number. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201201314] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Ulrike Lehmann
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany, Fax: +49‐341‐97‐36199, http://www.uni‐leipzig.de/~bkerst
| | - Jochen Lach
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany, Fax: +49‐341‐97‐36199, http://www.uni‐leipzig.de/~bkerst
| | - Frederik Schleife
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany, Fax: +49‐341‐97‐36199, http://www.uni‐leipzig.de/~bkerst
| | - Alexander Jeremies
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany, Fax: +49‐341‐97‐36199, http://www.uni‐leipzig.de/~bkerst
| | - Berthold Kersting
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany, Fax: +49‐341‐97‐36199, http://www.uni‐leipzig.de/~bkerst
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14
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Gramage-Doria R, Armspach D, Matt D. Metallated cavitands (calixarenes, resorcinarenes, cyclodextrins) with internal coordination sites. Coord Chem Rev 2013. [DOI: 10.1016/j.ccr.2012.10.006] [Citation(s) in RCA: 110] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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15
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Jankolovits J, Cutland Van-Noord AD, Kampf JW, Pecoraro VL. Selective anion encapsulation in solid-state Ln(iii)[15-metallacrown-5]3+ compartments through secondary sphere interactions. Dalton Trans 2013; 42:9803-8. [DOI: 10.1039/c3dt50535a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Frischmann PD, MacLachlan MJ. Metallocavitands: an emerging class of functional multimetallic host molecules. Chem Soc Rev 2013. [DOI: 10.1039/c2cs35337g] [Citation(s) in RCA: 135] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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17
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Grant JT, Jankolovits J, Pecoraro VL. Enhanced Guest Affinity and Enantioselectivity through Variation of the Gd3+[15-Metallacrown-5] Side Chain. Inorg Chem 2012; 51:8034-41. [DOI: 10.1021/ic300110g] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Joseph T. Grant
- Department of Chemistry, University of Michigan, Ann Arbor, 930 N. University Ave, Ann Arbor,
Michigan 48109, United States
| | - Joseph Jankolovits
- Department of Chemistry, University of Michigan, Ann Arbor, 930 N. University Ave, Ann Arbor,
Michigan 48109, United States
| | - Vincent L. Pecoraro
- Department of Chemistry, University of Michigan, Ann Arbor, 930 N. University Ave, Ann Arbor,
Michigan 48109, United States
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18
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Lozan V, Lach J, Kersting B. Synthesis, Structure, and Reactivity of Dinuclear Nickel Amino-Thiophenolate Complexes Bearing Bridging VO2(OH)2–and VO2(OR)2– Coligands. Inorg Chem 2012; 51:5213-23. [DOI: 10.1021/ic300085f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vasile Lozan
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, D-04103
Leipzig, Germany
| | - Jochen Lach
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, D-04103
Leipzig, Germany
| | - Berthold Kersting
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, D-04103
Leipzig, Germany
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19
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Käss S, Kersting B. Macrocyclic [M2L(μ-L′)]+ Complexes (M = NiII, ZnII; L′ = Cl- or RCO2-) Incorporating Thiophenolate and Phenylsulfonate Donor Units: Preparation, Reactivity, Structure, and Stability. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200036] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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20
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Jankolovits J, Lim CS, Mezei G, Kampf JW, Pecoraro VL. Influencing the Size and Anion Selectivity of Dimeric Ln3+[15-Metallacrown-5] Compartments through Systematic Variation of the Host Side Chains and Central Metal. Inorg Chem 2012; 51:4527-38. [DOI: 10.1021/ic202347j] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Joseph Jankolovits
- Department of Chemistry, University of Michigan, Ann Arbor, 930 North University Avenue, Ann
Arbor, Michigan 48109, United States
| | - Choong-Sun Lim
- Department of Chemistry, University of Michigan, Ann Arbor, 930 North University Avenue, Ann
Arbor, Michigan 48109, United States
| | - Gellert Mezei
- Department of Chemistry, University of Michigan, Ann Arbor, 930 North University Avenue, Ann
Arbor, Michigan 48109, United States
| | - Jeff W. Kampf
- Department of Chemistry, University of Michigan, Ann Arbor, 930 North University Avenue, Ann
Arbor, Michigan 48109, United States
| | - Vincent L. Pecoraro
- Department of Chemistry, University of Michigan, Ann Arbor, 930 North University Avenue, Ann
Arbor, Michigan 48109, United States
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21
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Constable EC, Zhang G, Häussinger D, Housecroft CE, Zampese JA. Metallohosts with a heart of carbon. J Am Chem Soc 2011; 133:10776-9. [PMID: 21699154 DOI: 10.1021/ja204888w] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Single-crystal X-ray diffraction studies have confirmed that Ni(3)S(3)-based molecular bowls prepared in one-pot reactions capture either CH(2)Cl(2) or C(60). The nature of the pendant substituents (naphthalen-2-ylmethyl, benzyl, or ethyl) around the rim of the bowl dictates the formation of a 1:1 (bowl host-C(60) guest) or 2:1 (capsule host-C(60) guest) architecture. In CDCl(3), the trimeric complexes were found to be in equilibrium with dimeric analogues. For the naphthalen-2-ylmethyl-substituted host, NMR spectroscopic titration data confirmed a 1:1 host-C(60) guest complex in 1,2-Cl(2)C(6)D(4) solution.
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Affiliation(s)
- Edwin C Constable
- Department of Chemistry, University of Basel, Spitalstrasse 51, CH-4056 Basel, Switzerland.
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22
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Gramage-Doria R, Armspach D, Matt D, Toupet L. A Cavity-Shaped Diphosphane Displaying “Oschelating” Behavior. Angew Chem Int Ed Engl 2011; 50:1554-9. [DOI: 10.1002/anie.201005169] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2010] [Revised: 11/12/2010] [Indexed: 11/09/2022]
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23
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Gramage-Doria R, Armspach D, Matt D, Toupet L. A Cavity-Shaped Diphosphane Displaying “Oschelating” Behavior. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201005169] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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24
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Govor EV, Lysenko AB, Quiñonero D, Rusanov EB, Chernega AN, Moellmer J, Staudt R, Krautscheid H, Frontera A, Domasevitch KV. Self-assembly hexanuclear metallacontainer hosting halogenated guest species and sustaining structure of 3D coordination framework. Chem Commun (Camb) 2011; 47:1764-6. [DOI: 10.1039/c0cc04433d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Sémeril D, Matt D, Toupet L, Oberhauser W, Bianchini C. High-Pressure Investigations under CO/H2 of Rhodium Complexes Containing Hemispherical Diphosphites. Chemistry 2010; 16:13843-9. [DOI: 10.1002/chem.201001610] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Krupskaya Y, Alfonsov A, Parameswaran A, Kataev V, Klingeler R, Steinfeld G, Beyer N, Gressenbuch M, Kersting B, Büchner B. Interplay of magnetic exchange interactions and Ni-S-Ni bond angles in polynuclear nickel(II) complexes. Chemphyschem 2010; 11:1961-70. [PMID: 20408157 DOI: 10.1002/cphc.200900935] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The ability of bridging thiophenolate groups (RS(-)) to transmit magnetic exchange interactions between paramagnetic Ni(II) ions is examined. Specific attention is paid to complexes with large Ni-SR-Ni angles. For this purpose, dinuclear [Ni(2)L(1)(mu-OAc)I(2)][I(5)] (2) and trinuclear [Ni(3)L(2)(OAc)(2)][BPh(4)](2) (3), where H(2)L(1) and H(2)L(2) represent 24-membered macrocyclic amino-thiophenol ligands, are prepared and fully characterized by IR- and UV/Vis spectroscopy, X-ray crystallography, static magnetization M measurements and high-field electron spin resonance (HF-ESR). The dinuclear complex 2 has a central N(3)Ni(2)(mu-S)(2)(mu-OAc)Ni(2)N(3) core with a mean Ni-S-Ni angle of 92 degrees . The macrocycle L(2) supports a trinuclear complex 3, with distorted octahedral N(2)O(2)S(2) and N(2)O(3)S coordination environments for one central and two terminal Ni(II) ions, respectively. The Ni-S-Ni angles are at 132.8 degrees and 133.5 degrees . We find that the variation of the bond angles has a very strong impact on the magnetic properties of the Ni complexes. In the case of the Ni(2)-complex, temperature T and magnetic field B dependencies of M reveal a ferromagnetic coupling J=-29 cm(-1) between two Ni(II) ions (H=JS(1)S(2)). HF-ESR measurements yield a negative axial magnetic anisotropy (D<0) which implies a bistable (easy axis) magnetic ground state. In contrast, for the Ni(3)-complex we find an appreciable antiferromagnetic coupling J'=97 cm(-1) between the Ni(II) ions and a positive axial magnetic anisotropy (D>0) which implies an easy plane situation.
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Affiliation(s)
- Yulia Krupskaya
- Leibniz Institute for Solid State and Materials Research, IFW Dresden, 01171 Dresden, Germany.
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Višnjevac A, Gout J, Ingert N, Bistri O, Reinaud O. First ZnII Bowl-Complexes Modeling the Tris(histidine) Metallo-Site of Enzymes. Org Lett 2010; 12:2044-7. [DOI: 10.1021/ol100512n] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Aleksandar Višnjevac
- Laboratoire de Chimie et de Biochimie pharmacologiques et toxicologiques, Université Paris Descartes, CNRS UMR 8601 45, rue des Saints Pères, 75006 Paris, France, and Physical Chemistry Division, Rudjer Bošković Institute Bijenička cesta 54, HR-10000 Zagreb, Croatia
| | - Jérôme Gout
- Laboratoire de Chimie et de Biochimie pharmacologiques et toxicologiques, Université Paris Descartes, CNRS UMR 8601 45, rue des Saints Pères, 75006 Paris, France, and Physical Chemistry Division, Rudjer Bošković Institute Bijenička cesta 54, HR-10000 Zagreb, Croatia
| | - Nicolas Ingert
- Laboratoire de Chimie et de Biochimie pharmacologiques et toxicologiques, Université Paris Descartes, CNRS UMR 8601 45, rue des Saints Pères, 75006 Paris, France, and Physical Chemistry Division, Rudjer Bošković Institute Bijenička cesta 54, HR-10000 Zagreb, Croatia
| | - Olivia Bistri
- Laboratoire de Chimie et de Biochimie pharmacologiques et toxicologiques, Université Paris Descartes, CNRS UMR 8601 45, rue des Saints Pères, 75006 Paris, France, and Physical Chemistry Division, Rudjer Bošković Institute Bijenička cesta 54, HR-10000 Zagreb, Croatia
| | - Olivia Reinaud
- Laboratoire de Chimie et de Biochimie pharmacologiques et toxicologiques, Université Paris Descartes, CNRS UMR 8601 45, rue des Saints Pères, 75006 Paris, France, and Physical Chemistry Division, Rudjer Bošković Institute Bijenička cesta 54, HR-10000 Zagreb, Croatia
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