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Daul WG, Hirrle M, Eisfeld B, Kraft M, von Nidda HAK, Volkmer D. Heteropentanuclear {Ru(II)Cu(II) 4} Kuratowski Complexes Assembled from a Ruthenium(II) Precursor Complex to Study Competing Exchange Interactions in M(II)(ta) 2 Networks [ta(-) = 1,2,3-Triazolate]. Inorg Chem 2024; 63:5027-5039. [PMID: 38440999 DOI: 10.1021/acs.inorgchem.3c04478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2024]
Abstract
We report a directed two-step synthesis toward pentanuclear Kuratowski complexes. First, six 5,6-dimethylbenzo[1,2,3]triazole ligands (Me2btaH) are coordinated to a single Ru(II) ion, providing a topologically ideal template for the addition of further metal ions. The synthesis and crystal structures of [RuCu4X4(Me2bta)6] [X = acetylacetonate (acac) and tris(3,5-dimethyl-1-pyrazolyl)borate (Tp*)] are described. Both represent new members of the family of so-called Kuratowski (K3,3) complexes. The coordination units feature triazolato-bridged metal-centered {MM4} tetrahedra, which are known for frustrated magnetic interactions in both complexes and metal-organic frameworks. The novel Ru(II)-centered complexes were synthesized in order to investigate the influence of the presence or absence of a paramagnetic central metal ion in the Kuratowski complex. Superconducting quantum interference device and electron spin resonance measurements demonstrate that small deviations in bond lengths and valence angles can lead to the formation of pairs of magnetic exchange-coupled Cu(II) ions. Which Cu(II) ions pair up can be predicted in Jahn-Teller active compounds by the overlap of the respective orbitals. These data are compared with those gleaned for M(II)(ta)2 (ta = 1,2,3-triazolate) lattices, in which structurally similar {MM4} tetrahedra constitute the secondary building units.
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Affiliation(s)
- Wiebke G Daul
- University of Augsburg, Universitaetsstrasse 1, D-86159 Augsburg, Germany
| | - Marcel Hirrle
- University of Augsburg, Universitaetsstrasse 1, D-86159 Augsburg, Germany
| | - Bennett Eisfeld
- University of Augsburg, Universitaetsstrasse 1, D-86159 Augsburg, Germany
| | - Maryana Kraft
- University of Augsburg, Universitaetsstrasse 1, D-86159 Augsburg, Germany
| | | | - Dirk Volkmer
- University of Augsburg, Universitaetsstrasse 1, D-86159 Augsburg, Germany
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2
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Hashmi OH, Capet F, Visseaux M, Champouret Y. Homoleptic and Heteroleptic Substituted Amidomethylpyridine Iron Complexes: Synthesis, Structure and Polymerization of rac‐Lactide. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Obaid H. Hashmi
- Universite de Lille Faculte des Sciences et Technologies UMR 8181 Campus Scientifique 59655 Villeneuve d'Ascq FRANCE
| | - Frederic Capet
- Universite de Lille Faculte des Sciences et Technologies UMR 8181 Campus Scientifique 59655 Villeneuve d'Ascq FRANCE
| | - Marc Visseaux
- Universite de Lille Faculte des Sciences et Technologies UMR 8181 Campus Scientifique 59655 Villeneuve d'Ascq FRANCE
| | - Yohan Champouret
- Universite de Lille Faculte des Sciences et Technologies UMR 8181 Campus Scientifique 59655 Villeneuve d'Ascq FRANCE
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3
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Maddock L, Morton R, Kennedy A, Hevia E. Lateral Metallation and Redistribution Reactions of Sodium Ferrates Containing Bulky 2,6-Diisopropyl-N-(trimethylsilyl)anilide Ligands. Chemistry 2021; 27:15180-15186. [PMID: 34324749 PMCID: PMC8596604 DOI: 10.1002/chem.202102328] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Indexed: 12/02/2022]
Abstract
Alkali‐metal ferrates containing amide groups have emerged as regioselective bases capable of promoting Fe−H exchanges of aromatic substrates. Advancing this area of heterobimetallic chemistry, a new series of sodium ferrates is introduced incorporating the bulky arylsilyl amido ligand N(SiMe3)(Dipp) (Dipp=2,6‐iPr2‐C6H3). Influenced by the large steric demands imposed by this amide, transamination of [NaFe(HMDS)3] (HMDS=N(SiMe3)2) with an excess of HN(SiMe3)(Dipp) led to the isolation of heteroleptic [Na(HMDS)2Fe{N(SiMe3)Dipp}]∞ (1) resulting from the exchange of just one HMDS group. An alternative co‐complexation approach, combining the homometallic metal amides [NaN(SiMe3)Dipp] and [Fe{N(SiMe3)Dipp}2] induces lateral metallation of one Me arm from the SiMe3 group in the iron amide furnishing tetrameric [NaFe{N(SiCH2Me2)Dipp}{N(SiMe3)Dipp}]4 (2). Reactivity studies support that this deprotonation is driven by the steric incompatibility of the single metal amides rather than the basic capability of the sodium reagent. Displaying synergistic reactivity, heteroleptic sodium ferrate 1 can selectively promote ferration of pentafluorobenzene using one of its HMDS arms to give heterotrileptic [Na{N(SiMe3)Dipp}(HMDS)Fe(C6F5)]∞ (4). Attempts to deprotonate less activated pyridine led to the isolation of NaHMDS and heteroleptic Fe(II) amide [(py)Fe{N(SiMe3)Dipp}(HMDS)] (5), resulting from an alternative redistribution process which is favoured by the Lewis donor ability of this substrate.
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Affiliation(s)
- Lewis Maddock
- University of Bern: Universitat Bern, Department of Chemistry and Biochemistry, SWITZERLAND
| | - Rebekka Morton
- University of Strathclyde Department of Pure and Applied Chemistry, Pure and Applied Chemistry, UNITED KINGDOM
| | - Alan Kennedy
- University of Strathclyde Faculty of Science, Pure and applied chemistry, UNITED KINGDOM
| | - Eva Hevia
- Universitat Bern, Department of Chemistry and Biochemistry, Freiestrasse 3, 3012, Bern, SWITZERLAND
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4
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Loukopoulos E, Kostakis GE. Recent advances in the coordination chemistry of benzotriazole-based ligands. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.06.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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5
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Pratt J, Bryan AM, Faust M, Boynton JN, Vasko P, Rekken BD, Mansikkamäki A, Fettinger JC, Tuononen HM, Power PP. Effects of Remote Ligand Substituents on the Structures, Spectroscopic, and Magnetic Properties of Two-Coordinate Transition-Metal Thiolate Complexes. Inorg Chem 2018; 57:6491-6502. [PMID: 29745653 DOI: 10.1021/acs.inorgchem.8b00551] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first-row transition-metal(II) dithiolates M(SAriPr4)2 [AriPr4 = C6H3-2,6-(C6H3-2,6-iPr2)2; M = Cr (1), Mn (3), Fe (4), Co (5), Ni (6), and Zn (7)] and Cr(SArMe6)2 [2; ArMe6 = C6H3-2,6-(C6H2-2,4,6-Me3)2] and the ligand-transfer reagent (NaSAriPr4)2 (8) are described. In contrast to their M(SAriPr6)2 (M = Cr, Mn, Fe, Co, Ni, and Zn; AriPr6 = C6H3-2,6-(C6H2-2,4,6-iPr3)2) congeners, which differ from 1 and 3-6 in having p-isopropyl groups on the flanking aryl rings of the terphenyl substituents, compounds 1 and 4-6 display highly bent coordination geometries with S-M-S angles of 109.802(2)° (1), 120.2828(3)° (4), 91.730(3)° (5), and 92.68(2)° (6) as well as relatively close metal-flanking aryl ring η6 interactions with metal-centroid distances of 2.11477(6) Å (1), 1.97188(3) Å (2), 2.15269(6) Å (4), 1.62058(9) Å (5), and 1.724(8) Å (6). However, the d5 (Mn) and d10 (Zn) complexes 3 and 7 display linear or near-linear coordination with no close metal-ligand distances. The nonlinear geometries of 1 and 4-6 also contrast with those of their AriPr4-substituted alkoxo and amido congeners, which have strictly linear coordination. Complexes 1-7 were synthesized by the reaction of the lithium or sodium thiolate salt with the metal dihalide or, in the case of 3, by the reaction of the thiol with the amido complex Mn[N(SiMe3)2]2. All compounds were characterized by electronic spectroscopy, X-ray crystallography, and magnetic measurements using Evans' method and SQUID magnetometry. It was concluded that, despite the large bulk of the AriPr4 substituents, the absence of p-isopropyl groups on the flanking rings of the ligand permits close secondary metal-flanking ring distances. The compounds are characterized by more intense colors and display magnetic moments that are generally lower than the spin-only values, in agreement with the covalent character of the close metal-flanking ring η6 interactions.
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Affiliation(s)
- Jade Pratt
- Department of Chemistry , University of California , One Shields Avenue , Davis , California 95616 , United States
| | - Aimee M Bryan
- Department of Chemistry , University of California , One Shields Avenue , Davis , California 95616 , United States
| | - Michelle Faust
- Department of Chemistry , University of California , One Shields Avenue , Davis , California 95616 , United States
| | - Jessica N Boynton
- Department of Chemistry , University of California , One Shields Avenue , Davis , California 95616 , United States
| | - Petra Vasko
- Department of Chemistry, Nanoscience Center , University of Jyväskylä , P.O. Box 35, FI-40014 Jyväskylä , Finland
| | - Brian D Rekken
- Department of Chemistry , University of California , One Shields Avenue , Davis , California 95616 , United States
| | - Akseli Mansikkamäki
- Department of Chemistry, Nanoscience Center , University of Jyväskylä , P.O. Box 35, FI-40014 Jyväskylä , Finland
| | - James C Fettinger
- Department of Chemistry , University of California , One Shields Avenue , Davis , California 95616 , United States
| | - Heikki M Tuononen
- Department of Chemistry, Nanoscience Center , University of Jyväskylä , P.O. Box 35, FI-40014 Jyväskylä , Finland
| | - Philip P Power
- Department of Chemistry , University of California , One Shields Avenue , Davis , California 95616 , United States
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6
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Monakhov KY, van Leusen J, Kögerler P, Zins EL, Alikhani ME, Tromp M, Danopoulos AA, Braunstein P. Linear, Trinuclear Cobalt Complexes with o
-Phenylene-bis-Silylamido Ligands. Chemistry 2017; 23:6504-6508. [DOI: 10.1002/chem.201700496] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Kirill Yu. Monakhov
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Jan van Leusen
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Paul Kögerler
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
- Jülich-Aachen Research Alliance (JARA-FIT); Peter Grünberg Institute (PGI-6); Forschungszentrum Jülich; 52425 Jülich Germany
| | - Emilie-Laure Zins
- Sorbonne Universités, UPMC Univ. Paris 06, MONARIS, UMR 8233; Université Pierre et Marie Curie; 4 Place Jussieu, case courrier 49 75252 Paris Cedex 05 France
| | - M. Esmaïl Alikhani
- Sorbonne Universités, UPMC Univ. Paris 06, MONARIS, UMR 8233; Université Pierre et Marie Curie; 4 Place Jussieu, case courrier 49 75252 Paris Cedex 05 France
| | - Moniek Tromp
- Van't Hoff Institute for Molecular Sciences; Sustainable Materials Characterization; University of Amsterdam; Amsterdam The Netherlands
| | - Andreas A. Danopoulos
- Institute for Advanced Study (USIAS); Université de Strasbourg; 4 rue Blaise Pascal 67081 Strasbourg Cedex France
- Université de Strasbourg; CNRS, CHIMIE UMR 7177; Laboratoire de Chimie de Coordination; 4 rue Blaise Pascal 67081 Strasbourg Cedex France
| | - Pierre Braunstein
- Université de Strasbourg; CNRS, CHIMIE UMR 7177; Laboratoire de Chimie de Coordination; 4 rue Blaise Pascal 67081 Strasbourg Cedex France
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7
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Maddock LCH, Borilovic I, McIntyre J, Kennedy AR, Aromí G, Hevia E. Synthetic, structural and magnetic implications of introducing 2,2′-dipyridylamide to sodium-ferrate complexes. Dalton Trans 2017; 46:6683-6691. [DOI: 10.1039/c7dt01319a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Establishing transamination as an efficient method to access novel heterobimetallic complexes, this study provides magnetic and structural insights of 2,2-dipyridylamide based sodium ferrate complexes.
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Affiliation(s)
- Lewis C. H. Maddock
- WestCHEM
- Department of Pure and Applied Chemistry
- University of Strathclyde
- Glasgow
- UK
| | - Ivana Borilovic
- Department de Química Inorgànica
- Universitat de Barcelona
- 08028 Barcelona
- Spain
| | - Jamie McIntyre
- WestCHEM
- Department of Pure and Applied Chemistry
- University of Strathclyde
- Glasgow
- UK
| | - Alan R. Kennedy
- WestCHEM
- Department of Pure and Applied Chemistry
- University of Strathclyde
- Glasgow
- UK
| | - Guillem Aromí
- Department de Química Inorgànica
- Universitat de Barcelona
- 08028 Barcelona
- Spain
| | - Eva Hevia
- WestCHEM
- Department of Pure and Applied Chemistry
- University of Strathclyde
- Glasgow
- UK
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8
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Magnetic anisotropy in two- to eight-coordinated transition–metal complexes: Recent developments in molecular magnetism. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2015.06.013] [Citation(s) in RCA: 304] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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9
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Werner TW, Reschke S, Bunzen H, von Nidda HAK, Deisenhofer J, Loidl A, Volkmer D. [Co5Tp*4(Me2bta)6]: A Highly Symmetrical Pentanuclear Kuratowski Complex Featuring Tris(pyrazolyl)borate and Benzotriazolate Ligands. Inorg Chem 2016; 55:1053-60. [DOI: 10.1021/acs.inorgchem.5b01982] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tamas W. Werner
- Chair of Solid State and Materials Chemistry,
Institute of Physics, University of Augsburg, Universitaetsstrasse 1, D-86159 Augsburg, Germany
| | - Stephan Reschke
- Experimental Physics V, Center for Electronic Correlations
and Magnetism, Institute of Physics, University of Augsburg, Universitaetsstrasse
1, D-86159 Augsburg, Germany
| | - Hana Bunzen
- Chair of Solid State and Materials Chemistry,
Institute of Physics, University of Augsburg, Universitaetsstrasse 1, D-86159 Augsburg, Germany
| | - Hans-Albrecht Krug von Nidda
- Experimental Physics V, Center for Electronic Correlations
and Magnetism, Institute of Physics, University of Augsburg, Universitaetsstrasse
1, D-86159 Augsburg, Germany
| | - Joachim Deisenhofer
- Experimental Physics V, Center for Electronic Correlations
and Magnetism, Institute of Physics, University of Augsburg, Universitaetsstrasse
1, D-86159 Augsburg, Germany
| | - Alois Loidl
- Experimental Physics V, Center for Electronic Correlations
and Magnetism, Institute of Physics, University of Augsburg, Universitaetsstrasse
1, D-86159 Augsburg, Germany
| | - Dirk Volkmer
- Chair of Solid State and Materials Chemistry,
Institute of Physics, University of Augsburg, Universitaetsstrasse 1, D-86159 Augsburg, Germany
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10
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Hänninen MM, Pal K, Day BM, Pugh T, Layfield RA. A three-coordinate iron–silylene complex stabilized by ligand–ligand dispersion forces. Dalton Trans 2016; 45:11301-5. [DOI: 10.1039/c6dt02486f] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The structural and bonding properties of a three-coordinate N-heterocyclic silyene (NHSi) complex of the iron(ii) amide [Fe{N(SiMe3)2}2] are reported.
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Affiliation(s)
- Mikko M. Hänninen
- School of Chemistry
- The University of Manchester
- Manchester
- UK
- Department of Chemistry
| | - Kuntal Pal
- School of Chemistry
- The University of Manchester
- Manchester
- UK
- Department of Chemistry
| | | | - Thomas Pugh
- School of Chemistry
- The University of Manchester
- Manchester
- UK
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11
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Lake BRM, Shaver MP. Iron(ii) β-ketiminate complexes as mediators of controlled radical polymerisation. Dalton Trans 2016; 45:15840-15849. [DOI: 10.1039/c6dt01208f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A series of novel iron(ii) β-ketiminate complexes have been prepared and screened in styrene and methyl methacrylate CRP.
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12
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Fuentes MÁ, Kennedy AR, Mulvey RE, Parkinson JA, Rantanen T, Robertson SD, Snieckus V. Adding a Structural Context to the Deprotometalation and Trans-Metal Trapping Chemistry of Phenyl-Substituted Benzotriazole. Chemistry 2015; 21:14812-22. [DOI: 10.1002/chem.201502534] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Indexed: 11/06/2022]
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13
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Coles MP. The role of the bis-trimethylsilylamido ligand, [N{SiMe3}2]−, in main group chemistry. Part 1: Structural chemistry of the s-block elements. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2015.01.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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14
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Massard A, Braunstein P, Danopoulos AA, Choua S, Rabu P. Studies on Three-Coordinate [Co{N(SiMe3)2}2L] Complexes, L = N-Heterocyclic Carbene. Organometallics 2015. [DOI: 10.1021/om501178p] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Alexandre Massard
- Laboratoire
de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 rue Blaise Pascal, F-67081 Strasbourg Cedex, France
| | - Pierre Braunstein
- Laboratoire
de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 rue Blaise Pascal, F-67081 Strasbourg Cedex, France
| | - Andreas A. Danopoulos
- Laboratoire
de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 rue Blaise Pascal, F-67081 Strasbourg Cedex, France
- Université de Strasbourg Institute for Advanced Study (USIAS), F-67083 Strasbourg, France
| | - Sylvie Choua
- Institut
de Chimie, Université de Strasbourg, 1 rue Blaise Pascal, BP 296 R8, F-67008 Strasbourg Cedex, France
| | - Pierre Rabu
- Institut
de Physique et Chimie des Matériaux de Strasbourg (IPCMS) (UMR7504 CNRS - Université de Strasbourg), 23 rue du Loess, F-67034 Strasbourg, France
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15
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Fillman KL, Przyojski JA, Al-Afyouni MH, Tonzetich ZJ, Neidig ML. A combined magnetic circular dichroism and density functional theory approach for the elucidation of electronic structure and bonding in three- and four-coordinate iron(II)- N-heterocyclic carbene complexes. Chem Sci 2015; 6:1178-1188. [PMID: 25621143 PMCID: PMC4302958 DOI: 10.1039/c4sc02791d] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Accepted: 11/07/2014] [Indexed: 01/30/2023] Open
Abstract
The combination of iron salts and N-heterocyclic carbene (NHC) ligands is a highly effective combination in catalysis, with observed catalytic activities being highly dependent on the nature of the NHC ligand. Detailed spectroscopic and electronic structure studies have been performed on both three- and four-coordinate iron(II)-NHC complexes using a combined magnetic circular dichroism (MCD) and density functional theory (DFT) approach that provide detailed insight into the relative ligation properties of NHCs compared to traditional phosphine and amine ligands as well as the effects of NHC backbone structural variations on iron(II)-NHC bonding. Near-infrared MCD studies indicate that 10Dq(Td) for (NHC)2FeCl2 complexes is intermediate between those for comparable amine and phosphine complexes, demonstrating that such iron(II)-NHC and iron(II)-phosphine complexes are not simply analogues of one another. Theoretical studies including charge decomposition analysis indicate that the NHC ligands are slightly stronger donor ligands than phosphines but also result in significant weakening of the Fe-Cl bonds compared to phosphine and amine ligands. The net result is significant differences in the d orbital energies in four-coordinate (NHC)2FeCl2 complexes relative to the comparable phosphine complexes, where such electronic structure differences are likely a significant contributing factor to the differing catalytic performances observed with these ligands. Furthermore, Mössbauer, MCD and DFT studies of the effects of NHC backbone structure variations (i.e. saturated, unsaturated, chlorinated) on iron-NHC bonding and electronic structure in both three- and four-coordinate iron(II)-NHC complexes indicate only small differences as a function of backbone structure, that are likely amplified at lower oxidation states of iron due to the resulting decrease in the energy separation between the occupied iron d orbitals and the unoccupied NHC π* orbitals.
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Affiliation(s)
- Kathlyn L. Fillman
- Department of Chemistry , University of Rochester , Rochester , New York 14627 , USA .
| | - Jacob A. Przyojski
- Department of Chemistry , University of Texas at San Antonio , San Antonio , Texas 78249 , USA
| | - Malik H. Al-Afyouni
- Department of Chemistry , University of Rochester , Rochester , New York 14627 , USA .
| | - Zachary J. Tonzetich
- Department of Chemistry , University of Texas at San Antonio , San Antonio , Texas 78249 , USA
| | - Michael L. Neidig
- Department of Chemistry , University of Rochester , Rochester , New York 14627 , USA .
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16
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König SN, Schneider D, Maichle-Mössmer C, Day BM, Layfield RA, Anwander R. Divalent Transition Metal Silylamide Ate Complexes. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402557] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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17
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König SN, Schädle C, Maichle-Mössmer C, Anwander R. Silylamide complexes of chromium(II), manganese(II), and cobalt(II) bearing the ligands N(SiHMe2)2 and N(SiPhMe2)2. Inorg Chem 2014; 53:4585-97. [PMID: 24794280 DOI: 10.1021/ic5002682] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Bis(dimethylsilyl)amide and bis(dimethylphenylsilyl)amide complexes of the divalent transition metals chromium, manganese, and cobalt were synthesized. Dimeric, donor-free {Mn[N(SiHMe2)2]2}2 could be obtained via two different pathways, a salt metathesis route (utilizing MnCl2(thf)1.5 and LiN(SiHMe2)2) and a transsilylamination protocol (utilizing Mn[N(SiMe3)2]2(thf) and HN(SiHMe2)2). Addition of 1,1,3,3-tetramethylethylendiamine (tmeda) to {Mn[N(SiHMe2)2]2}2 yielded the monomeric adduct Mn[N(SiHMe2)2]2(tmeda). The syntheses of Cr[N(SiHMe2)2]2(tmeda), Co[N(SiMe3)2][N(SiHMe2)2](tmeda), and Co[N(SiHMe2)2]2(tmeda) were achieved by transsilylamination from Cr[N(SiMe3)2]2(tmeda) and {Co[N(SiMe3)2]2}2(μ-tmeda), respectively. Bis(dimethylphenylsilyl)amide complexes Mn[N(SiMe2Ph)2]2, Cr[N(SiMe2Ph)2]2, and Co[N(SiMe2Ph)2]2(thf) were obtained via salt metathesis employing MCl2(thf)x (M = Cr, Mn, Co) with equimolar amounts of LiN(SiMe2Ph)2 in n-hexane. Treatment of CrCl2 with LiN(SiMe2Ph)2 in thf gave Cr[N(SiMe2Ph)2]2(thf)2, featuring an almost square planar trans-coordination. All complexes were examined by elemental analyses, DRIFT and UV-vis spectroscopy, as well as X-ray structure analysis, paying particular attention to secondary M---SiH β-agostic and M---π(arene) interactions. Magnetic moments were determined by Evans' method.
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Affiliation(s)
- Sonja N König
- Institut für Anorganische Chemie, Universität Tübingen , Auf der Morgenstelle 18, 72076 Tübingen, Germany
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18
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Bryan AM, Long GJ, Grandjean F, Power PP. Synthesis, Structural, Spectroscopic, and Magnetic Characterization of Two-Coordinate Cobalt(II) Aryloxides with Bent or Linear Coordination. Inorg Chem 2014; 53:2692-8. [DOI: 10.1021/ic403098p] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Aimee M. Bryan
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
| | - Gary J. Long
- Department of Chemistry, Missouri University
of Science and Technology, University of Missouri, Rolla, Missouri 65409, United States
| | - Fernande Grandjean
- Department of Chemistry, Missouri University
of Science and Technology, University of Missouri, Rolla, Missouri 65409, United States
| | - Philip P. Power
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
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20
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Pugh T, Layfield RA. Reactivity of three-coordinate iron–NHC complexes towards phenylselenol and lithium phenylselenide. Dalton Trans 2014; 43:4251-4. [DOI: 10.1039/c3dt53203h] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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21
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Anastasiadis NC, Bilis G, Plakatouras JC, Raptopoulou CP, Psycharis V, Beavers C, Teat SJ, Louloudi M, Perlepes SP. Iron(III) chloride–benzotriazole adducts with trigonal bipyramidal geometry: Spectroscopic, structural and catalytic studies. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.03.062] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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22
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Pelties S, Wolf R. Iron(II), Cobalt(II), and Nickel(II) Complexes of a Cyclic (Alkyl)(amino)carbene. Z Anorg Allg Chem 2013. [DOI: 10.1002/zaac.201300395] [Citation(s) in RCA: 22] [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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23
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Day BM, Pugh T, Hendriks D, Guerra CF, Evans DJ, Bickelhaupt FM, Layfield RA. Normal-to-Abnormal Rearrangement and NHC Activation in Three-Coordinate Iron(II) Carbene Complexes. J Am Chem Soc 2013; 135:13338-41. [DOI: 10.1021/ja408589p] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Benjamin M. Day
- School of Chemistry, The University of Manchester, Manchester, M13 9PL, U.K
| | - Thomas Pugh
- School of Chemistry, The University of Manchester, Manchester, M13 9PL, U.K
| | - Daniël Hendriks
- Department of
Theoretical Chemistry, Amsterdam Center for Multiscale Modeling, VU University Amsterdam, NL-1081 HV Amsterdam, The Netherlands
| | - Célia Fonseca Guerra
- Department of
Theoretical Chemistry, Amsterdam Center for Multiscale Modeling, VU University Amsterdam, NL-1081 HV Amsterdam, The Netherlands
| | - David J. Evans
- Department
of
Chemistry, University of Hull, Hull, HU6 7RX, U.K
| | - F. Matthias Bickelhaupt
- Department of
Theoretical Chemistry, Amsterdam Center for Multiscale Modeling, VU University Amsterdam, NL-1081 HV Amsterdam, The Netherlands
- Radboud University
Nijmegen, Institute for Molecules and Materials, NL-6525 AJ Nijmegen, The Netherlands
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24
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Boynton JN, Guo JD, Fettinger JC, Melton CE, Nagase S, Power PP. Linear and nonlinear two-coordinate vanadium complexes: synthesis, characterization, and magnetic properties of V(II) amides. J Am Chem Soc 2013; 135:10720-8. [PMID: 23782062 DOI: 10.1021/ja403244w] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis and characterization of the first stable two-coordinate vanadium complexes are described. The vanadium(II) primary amido derivative V{N(H)Ar(iPr6)}2 [Ar(iPr6) = C6H3-2,6-(C6H2-2,4,6-iPr3)2] (1) was synthesized via the reaction of LiN(H)Ar(iPr6) with the V(III) complex VCl3·2NMe3 or the V(II) salt [V2Cl3(THF)6](+)I(-) in a 2:1 and 4:1 stoichiometry, respectively. Reaction of the less crowded LiN(H)Ar(Me6) with [V2Cl3(THF)6](+)I(-) afforded V{N(H)Ar(Me6)}2 [Ar(Me6) = C6H3-2,6-(C6H2-2,4,6-Me3)2] (2), which has a nonlinear [N-V-N = 123.47(9)°] vanadium coordination. Magnetometry studies showed that V{N(H)Ar(iPr6)}2 and V{N(H)Ar(Me6)}2 have ambient temperature magnetic moments of 3.41 and 2.77 μB, respectively, which are consistent with a high-spin d(3) electron configuration. These values suggest a significant spin orbital angular momentum contribution that leads to a magnetic moment that is lower than their spin-only value of 3.87 μB. DFT calculations showed that the major absorptions in their UV-vis spectra were due to ligand to metal charge transfer transitions. Exposure of the reaction mixture for 2 to dry O2 resulted in the formation of the diamagnetic V(V) oxocluster [V{N(H)Ar(Me6)}2]2(μ-O-Li-O)2 (3).
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Affiliation(s)
- Jessica N Boynton
- Department of Chemistry, University of California-Davis, 1 Shields Avenue, Davis, California 95616, USA
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25
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Wang X, Mo Z, Xiao J, Deng L. Monomeric Bis(anilido)iron(II) Complexes with N-Heterocyclic Carbene Ligation: Synthesis, Characterization, and Redox Reactivity toward Aryl Halides. Inorg Chem 2012; 52:59-65. [DOI: 10.1021/ic301894e] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Xiaojie Wang
- State Key Laboratory of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, P.
R. China, 200032
| | - Zhenbo Mo
- State Key Laboratory of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, P.
R. China, 200032
| | - Jie Xiao
- State Key Laboratory of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, P.
R. China, 200032
| | - Liang Deng
- State Key Laboratory of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, P.
R. China, 200032
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26
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Yi W, Zhang J, Chen Z, Zhou X. Me–Si Bond Cleavage of Anionic Bis(trimethylsilyl)amide in Scorpionate-Anchored Rare Earth Metal Complexes. Inorg Chem 2012; 51:10631-8. [DOI: 10.1021/ic3008552] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Weiyin Yi
- Department of Chemistry, Shanghai Key Laboratory of Molecular
Catalysis and Innovative Materials, Fudan University, Shanghai 200433, People’s Republic of China
- State Key Laboratory of Organometallic Chemistry, Shanghai
200032, People’s Republic of China
| | - Jie Zhang
- Department of Chemistry, Shanghai Key Laboratory of Molecular
Catalysis and Innovative Materials, Fudan University, Shanghai 200433, People’s Republic of China
- State Key Laboratory of Organometallic Chemistry, Shanghai
200032, People’s Republic of China
| | - Zhenxia Chen
- Department of Chemistry, Shanghai Key Laboratory of Molecular
Catalysis and Innovative Materials, Fudan University, Shanghai 200433, People’s Republic of China
- State Key Laboratory of Organometallic Chemistry, Shanghai
200032, People’s Republic of China
| | - Xigeng Zhou
- Department of Chemistry, Shanghai Key Laboratory of Molecular
Catalysis and Innovative Materials, Fudan University, Shanghai 200433, People’s Republic of China
- State Key Laboratory of Organometallic Chemistry, Shanghai
200032, People’s Republic of China
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27
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Danopoulos AA, Braunstein P, Wesolek M, Monakhov KY, Rabu P, Robert V. Three-Coordinate Iron(II) N-Heterocyclic Carbene Alkyl Complexes. Organometallics 2012. [DOI: 10.1021/om300245z] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Andreas A. Danopoulos
- Laboratoire de Chimie de Coordination,
Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 Rue Blaise Pascal, F-67081 Strasbourg,
France
| | - Pierre Braunstein
- Laboratoire de Chimie de Coordination,
Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 Rue Blaise Pascal, F-67081 Strasbourg,
France
| | - Marcel Wesolek
- Laboratoire de Chimie de Coordination,
Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 Rue Blaise Pascal, F-67081 Strasbourg,
France
| | - Kirill Yu. Monakhov
- Laboratoire de Chimie de Coordination,
Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 Rue Blaise Pascal, F-67081 Strasbourg,
France
| | - Pierre Rabu
- Institut de Physique
et Chimie
des Matériaux de Strasbourg (IPCMS) (UMR 7504 CNRS), Université de Strasbourg, 23 Rue du Loess, F-67034
Strasbourg, France
| | - Vincent Robert
- Laboratoire
de Chimie Quantique,
Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 1 Rue Blaise Pascal, F-67008 Strasbourg,
France
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28
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Power PP. Stable Two-Coordinate, Open-Shell (d1–d9) Transition Metal Complexes. Chem Rev 2012; 112:3482-507. [DOI: 10.1021/cr2004647] [Citation(s) in RCA: 211] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Philip P. Power
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California
95616, United States
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30
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Glöckner A, Daniliuc CG, Freytag M, Jones PG, Tamm M. A slipped multi-decker zirconium complex with an η7:η2-bridging cycloheptatrienyl ligand. Chem Commun (Camb) 2012; 48:6598-600. [DOI: 10.1039/c2cc32961a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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31
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Ingleson MJ, Layfield RA. N-Heterocyclic carbene chemistry of iron: fundamentals and applications. Chem Commun (Camb) 2012; 48:3579-89. [DOI: 10.1039/c2cc18021a] [Citation(s) in RCA: 175] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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32
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Sulway SA, Layfield RA, Bodensteiner M, Scheuermayer S, Scheer M, Zabel M. Benzotriazolate cage complexes of tin(II) and lithium: halide-influenced serendipitous assembly. Dalton Trans 2011; 40:7559-63. [PMID: 21695328 DOI: 10.1039/c1dt10400d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The one-pot reactions of the tin(II) halides SnX(2) (X = F, Cl, Br, I) with lithium hexamethyldisilazide, [Li(hmds)], and benzotriazole, (bta)H, produce contrasting outcomes. Tin(II) fluoride does not react with [Li(hmds)] and (bta)H, the outcome being the formation of insoluble [Li(bta)](∞). Tin(II) chloride and tin(II) bromide react with [Li(hmds)] and (bta)H in toluene to produce the hexadecametallic tin(II)-lithium cages [(hmds)(8)Sn(8)(bta)(12)Li(8)X(4)]·(n toluene) [X = Cl, 3·(8 toluene); X = Br, 4·(3 toluene)]. The reaction of tin(II) iodide with [Li(hmds)] and (bta)H in thf solvent produces the ion-separated species [{(thf)(2)Li(bta)}(3){Li(thf)}](2)[SnI(4)]·(thf), [5](2)[SnI(4)]·(thf), the structure of which contains a cyclic trimeric unit of lithium benzotriazolate and a rare example of the tetraiodostannate(II) dianion.
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Affiliation(s)
- Scott A Sulway
- School of Chemistry, The University of Manchester, Oxford Road, Manchester, UK
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Biswas B, Pal A, Rama Krishna G, Malla Reddy C, Tuna F, Ghosh R. An antiferromagnetically coupled dimeric Ni(II) complex anion and its counter cationic monomeric Ni(II) complex, and some other mononuclear transition metal compounds using some neutral ligands. Polyhedron 2011. [DOI: 10.1016/j.poly.2011.05.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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34
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35
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Woodruff D, Bodensteiner M, Sells DO, Winpenny REP, Layfield RA. Synthesis and structure of cationic guanidinate-bridged bimetallic {Li7M} cubes (M = Mn, Co, Zn) with inverse crown counter anions. Dalton Trans 2011; 40:10918-23. [DOI: 10.1039/c1dt10999e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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36
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Layfield RA, McDouall JJW, Scheer M, Schwarzmaier C, Tuna F. Structure and bonding in three-coordinate N-heterocyclic carbene adducts of iron(ii) bis(trimethylsilyl)amide. Chem Commun (Camb) 2011; 47:10623-5. [DOI: 10.1039/c1cc14576b] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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