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Jung J, Legendre CM, Demeshko S, Herbst-Irmer R, Stalke D. Imidosulfonate scorpionate ligands in lanthanide single-molecule magnet design: slow magnetic relaxation and butterfly hysteresis in [ClDy{Ph 2PCH 2S(N tBu) 3} 2]. Dalton Trans 2021; 50:17194-17201. [PMID: 34783813 DOI: 10.1039/d1dt03555j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Single-molecule magnets (SMMs) harbour vast opportunities for potential pioneering applications upon optimization like big data storage and quantum computing. Lanthanides were found to be highly suitable candidates in the design of such molecules, as they intrinsically hold a large unquenched orbital momentum and a strong spin-orbit coupling, warranting a high magnetic anisotropy. An indispensable element in successfully tailoring SMMs is the ligand design. Polyimido sulfur ligands offer a promising choice because the polar S+-N--bond facilitates both electronic and geometric adaptability to various f-metals. In particular, the acute N-Ln-N bite angle generates advantageous magnetic properties. The [Ph2PCH2S(NtBu)3]- anion, introduced from [(thf)3K{Ph2PCH2S(NtBu)3}] (2) to a series of complexes [ClLn{Ph2PCH2S(NtBu)3}2] with Ln = Tb (3a), Dy (3b), Er (3c), Ho (3d), and Lu (3e), provides tripodal shielding of the metal's hemisphere as well as a side-arm donation of a soft phosphorus atom. For the Tb and Er complexes 3a and 3d, slow magnetic relaxation (Ueff = 235 and 34.5 cm-1, respectively) was only observed under an applied dc field. The dysprosium congener 3b, however, is a true SMM with relaxation at zero field (Ueff = 66 cm-1) and showing a butterfly hysteresis close to 3.5 K. Upon magnetic dilution with the diamagnetic and isostructural lutetium complex 3e or application of a magnetic field, the energy barrier to spin reversal is increased to 74 cm-1.
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Affiliation(s)
- Jochen Jung
- Georg-August Universität Göttingen, Institut für Anorganische Chemie, Tammannstraße 4, 37077 Göttingen, Germany.
| | - Christina M Legendre
- Georg-August Universität Göttingen, Institut für Anorganische Chemie, Tammannstraße 4, 37077 Göttingen, Germany.
| | - Serhiy Demeshko
- Georg-August Universität Göttingen, Institut für Anorganische Chemie, Tammannstraße 4, 37077 Göttingen, Germany.
| | - Regine Herbst-Irmer
- Georg-August Universität Göttingen, Institut für Anorganische Chemie, Tammannstraße 4, 37077 Göttingen, Germany.
| | - Dietmar Stalke
- Georg-August Universität Göttingen, Institut für Anorganische Chemie, Tammannstraße 4, 37077 Göttingen, Germany.
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Jung J, Benner F, Herbst‐Irmer R, Demir S, Stalke D. Slow Magnetic Relaxation in Mono- and Bimetallic Lanthanide Tetraimido-Sulfate S(NtBu) 4 2- Complexes. Chemistry 2021; 27:12310-12319. [PMID: 33978251 PMCID: PMC8453918 DOI: 10.1002/chem.202101076] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Indexed: 12/16/2022]
Abstract
Lanthanide ions are particularly well-suited for the design of single-molecule magnets owing to their large unquenched orbital angular momentum and strong spin-orbit coupling that gives rise to high magnetic anisotropy. Such nanoscopic bar magnets can potentially revolutionize high-density information storage and processing technologies, if blocking temperatures can be increased substantially. Exploring non-classical ligand scaffolds with the aim to boost the barriers to spin-relaxation are prerequisite. Here, the synthesis, crystallographic and magnetic characterization of a series of each isomorphous mono- and dinuclear lanthanide (Ln=Gd, Tb, Dy, Ho, Er) complexes comprising tetraimido sulfate ligands are presented. The dinuclear Dy complex [{(thf)2 Li(NtBu)2 S(tBuN)2 DyCl2 }2 ⋅ ClLi(thf)2 ] (1c) shows true signatures of single-molecule magnet behavior in the absence of a dc field. In addition, the mononuclear Dy and Tb complexes [{(thf)2 Li(NtBu)2 S(tBuN)2 LnCl2 (thf)2 ] (2b,c) show slow magnetic relaxation under applied dc fields.
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Affiliation(s)
- Jochen Jung
- Institut für Anorganische ChemieGeorg-August Universität GöttingenTammannstraße 437077GöttingenGermany
| | - Florian Benner
- Department of ChemistryMichigan State University578 S Shaw LaneEast LansingMI 48824USA
| | - Regine Herbst‐Irmer
- Institut für Anorganische ChemieGeorg-August Universität GöttingenTammannstraße 437077GöttingenGermany
| | - Selvan Demir
- Department of ChemistryMichigan State University578 S Shaw LaneEast LansingMI 48824USA
| | - Dietmar Stalke
- Institut für Anorganische ChemieGeorg-August Universität GöttingenTammannstraße 437077GöttingenGermany
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3
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Jung J, Legendre CM, Herbst-Irmer R, Stalke D. Exchange Coupling in Binuclear Manganese and Cobalt Complexes with the Tetraimido Sulfate Anion [S(N tBu) 4] 2. Inorg Chem 2021; 60:967-972. [PMID: 33378190 DOI: 10.1021/acs.inorgchem.0c03085] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The (hetero)bimetallic complexes [Cl2Mn(NtBu)2S(tBuN)2Mn{ClLi(THF)3}2] (1), [(acac)Co(NtBu)2S(tBuN)2Co(acac)] (2), and [(acac)Co(NtBu)2S(tBuN)2Li(THF)2] (3), with THF = tetrahydrofuran and acac = acetylacetonate [H2C(C(O)Me)2], were synthesized and investigated for their magnetic properties. While the two different MnII sites in 1 gave a weak coupling of J = -1.00 cm-1, we could observe an appreciable antiferromagnetic coupling of J = -6.08 cm-1 between the two CoII cations in 2, proving the tetraimido sulfate anion to be a challenging but promising linker to enhance magnetic communication between paramagnetic centers. The heterobimetallic complex 3 seems a versatile platform for magnetically interesting d/d, f/d, or f/f mixed-metal complexes.
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Affiliation(s)
- Jochen Jung
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstraße 4, Göttingen 37077, Germany
| | - Christina M Legendre
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstraße 4, Göttingen 37077, Germany
| | - Regine Herbst-Irmer
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstraße 4, Göttingen 37077, Germany
| | - Dietmar Stalke
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstraße 4, Göttingen 37077, Germany
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Bremerich M, Conrads CM, Langletz T, Bolm C. Additions to N-Sulfinylamines as an Approach for the Metal-free Synthesis of Sulfonimidamides: O-Benzotriazolyl Sulfonimidates as Activated Intermediates. Angew Chem Int Ed Engl 2019; 58:19014-19020. [PMID: 31609528 PMCID: PMC6972565 DOI: 10.1002/anie.201911075] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Indexed: 11/10/2022]
Abstract
Sulfonimidamides are obtained in moderate to very good yields from the key intermediates O-benzotriazolyl sulfonimidates, which are formed by reacting aryldiazonium tetrafluoroborates, N-tritylsulfinylamine, and N-hydroxybenzotriazole hydrate in a process mediated by a tertiary amine. The formation of the sulfonimidate proceeds in inexpensive and environmentally benign dimethyl carbonate as the solvent, it does not require anhydrous conditions, and the product yields generally exceed 70 %. The substrate scope is broad, and a wide range of sensitive organic functionalities is well tolerated. The reactions probably proceed via aryl radicals formed from diazonium cations with assistance from both the tertiary amine and the sulfinylamine.
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Affiliation(s)
- Maximilian Bremerich
- Institut für Organische ChemieRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Christian M. Conrads
- Institut für Organische ChemieRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Tim Langletz
- Institut für Organische ChemieRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Carsten Bolm
- Institut für Organische ChemieRWTH Aachen UniversityLandoltweg 152074AachenGermany
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Bremerich M, Conrads CM, Langletz T, Bolm C. Additions to
N
‐Sulfinylamines as an Approach for the Metal‐free Synthesis of Sulfonimidamides:
O
‐Benzotriazolyl Sulfonimidates as Activated Intermediates. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201911075] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Maximilian Bremerich
- Institut für Organische ChemieRWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Christian M. Conrads
- Institut für Organische ChemieRWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Tim Langletz
- Institut für Organische ChemieRWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Carsten Bolm
- Institut für Organische ChemieRWTH Aachen University Landoltweg 1 52074 Aachen Germany
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Bayram M, Bläser D, Wölper C, Schulz S. Synthesis and X-ray Crystal Structure of Diimidosulfinate Transition Metal Complexes. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00407] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Melike Bayram
- Institute
of Inorganic Chemistry, University of Duisburg-Essen, Universitätsstr. 5-7, D-45117 Essen, Germany
| | - Dieter Bläser
- Institute
of Inorganic Chemistry, University of Duisburg-Essen, Universitätsstr. 5-7, D-45117 Essen, Germany
| | - Christoph Wölper
- Institute
of Inorganic Chemistry, University of Duisburg-Essen, Universitätsstr. 5-7, D-45117 Essen, Germany
| | - Stephan Schulz
- Institute
of Inorganic Chemistry, University of Duisburg-Essen, Universitätsstr. 5-7, D-45117 Essen, Germany
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Carl E, Demeshko S, Meyer F, Stalke D. Triimidosulfonates as Acute Bite-Angle Chelates: Slow Relaxation of the Magnetization in Zero Field and Hysteresis Loop of a CoIIComplex. Chemistry 2015; 21:10109-15. [DOI: 10.1002/chem.201406083] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Indexed: 11/07/2022]
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Carl E, Stalke D. Germanium(II) and Tin(II) Halide Complexes Containing the Triimido Sulfur(VI) Phosphanyl Ligand. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500074] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Elena Carl
- Institut für Anorganische Chemie, Universität Göttingen Tammannstraße 4, 37077 Göttingen, Germany, http://www.uni‐goettingen.de/de/53448.html
| | - Dietmar Stalke
- Institut für Anorganische Chemie, Universität Göttingen Tammannstraße 4, 37077 Göttingen, Germany, http://www.uni‐goettingen.de/de/53448.html
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Anga S, Bhattacharjee J, Harinath A, Panda TK. Synthesis, structure and reactivity study of magnesium amidinato complexes derived from carbodiimides and N,N'-bis(2,6-diisopropylphenyl)-1,4-diaza-butadiene ligands. Dalton Trans 2015; 44:955-65. [PMID: 25407563 DOI: 10.1039/c4dt03074e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
We report an amidinato ligand-supported series of magnesium complexes obtained from the insertion of a magnesium-carbon bond into a carbon-nitrogen double bond of different carbodiimides and α-diimine ligands. The magnesium complexes [Mg(CH2Ph){CyN[double bond, length as m-dash]C(CH2Ph)NCy}]2 (), [Mg(CH2Ph){(i)PrN[double bond, length as m-dash]C(CH2Ph)N(i)Pr}]2 () and the homoleptic [Mg{(t)BuN[double bond, length as m-dash]C(CH2Ph)N(t)Bu}2] () (Cy = cyclohexyl, (i)Pr = isopropyl, (t)Bu = tert-butyl) were prepared by the reaction of dibenzyl magnesium [Mg(CH2Ph)2(Et2O)2] with the respective carbodiimides either in 1 : 1 or 1 : 2 molar ratio in toluene. The analogous reaction of [Mg(CH2Ph)2(Et2O)2] with the N,N'-bis(2,6-diisopropylphenyl)-1,4-diaza-1,3-butadiene (Dipp2DAD) ligand afforded the corresponding homoleptic magnesium complex [Mg{DippN[double bond, length as m-dash]C(CH2Ph)CH2NDipp}2] () (Dipp = 2,6 diisopropylphenyl) in good yield. The solid-state structures of magnesium complexes were confirmed by single-crystal X-ray diffraction analysis. It was observed that in each case, a magnesium-carbon bond was inserted into the carbon-nitrogen double bond of either carbodiimides or Dipp2DAD resulting in a monoanionic amido-imino ligand. In a further reaction between and N-aryliminopyrrolyl ligand 2-(2,6-(i)Pr2C6H3N[double bond, length as m-dash]CH)C4H3NH (ImpDipp-H) in 1 : 2 molar ratio, a new magnesium complex [Mg(ImpDipp)2{CyN[double bond, length as m-dash]C(CH2Ph)NHCy}] (), with one amidinato and two aryliminopyrrolyl ligands in the coordination sphere, was obtained in good yield. In contrast, the homoleptic magnesium complex reacted with one equivalent of N-aryliminopyrrolyl ligand (ImpDipp-H) to produce another mixed ligated magnesium complex [Mg{DippN[double bond, length as m-dash]C(CH2Ph)CH2NDipp}(ImpDipp)] (), with a benzylated DAD ligand and aryliminopyrrolyl ligands in the coordination sphere. Further reaction of complex with benzyl alcohol (PhCH2OH) afforded the third mixed ligated magnesium complex [Mg{DippN[double bond, length as m-dash]C(CH2Ph)CH2NDipp}(OCH2Ph)2] () in very good yield. The magnesium complexes were characterised using standard analytical/spectroscopic techniques and their solid-state structures were established by single-crystal X-ray diffraction analysis.
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Affiliation(s)
- Srinivas Anga
- Department of Chemistry, Indian Institute of Technology Hyderabad, Ordnance Factory Estate, Yeddumailaram 502205, Telangana, India.
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10
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Carl E, Stalke D. Polyimido Sulfur(VI) Phosphanyl Ligand in Metal Complexation. Chemistry 2014; 20:15849-54. [DOI: 10.1002/chem.201404860] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Indexed: 11/11/2022]
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11
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Matussek J, Herbst-Irmer R, Objartel I, Stalke D. Transition metal complexes containing the S(NtBu)42− tetraimidosulfate dianion. Dalton Trans 2014; 43:15944-9. [PMID: 25230897 DOI: 10.1039/c4dt01995d] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three novel metal complexes [(acac)2Cu2(NtBu)4S] (3), [Li(thf)4]2[I4Cd2(NtBu)4S] (4) and [(thf)2Li{(SiMe3)2N}Zn(NtBu)4S] (5) are prepared from the intended transmetalation of the dilithium complex of N,N′,N′′,N′′′-tetrakis(tert-butyl)tetraimidosulfate [(thf)4Li2(NtBu)4S] (1).
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Affiliation(s)
- Julia Matussek
- Institut für Anorganische Chemie der Georg-August-Universität Göttingen
- 37077 Göttingen, Germany
| | - Regine Herbst-Irmer
- Institut für Anorganische Chemie der Georg-August-Universität Göttingen
- 37077 Göttingen, Germany
| | - Ina Objartel
- Institut für Anorganische Chemie der Georg-August-Universität Göttingen
- 37077 Göttingen, Germany
| | - Dietmar Stalke
- Institut für Anorganische Chemie der Georg-August-Universität Göttingen
- 37077 Göttingen, Germany
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12
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Harrison-Marchand A, Mongin F. Mixed AggregAte (MAA): A Single Concept for All Dipolar Organometallic Aggregates. 1. Structural Data. Chem Rev 2013; 113:7470-562. [DOI: 10.1021/cr300295w] [Citation(s) in RCA: 145] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Anne Harrison-Marchand
- Laboratoire COBRA de l′Université de Rouen, INSA de Rouen, CNRS, UMR 6014 & FR 3038, IRCOF, Rue Tesnière, 76821 Mont St Aignan Cédex, France
| | - Florence Mongin
- Équipe Chimie et Photonique Moléculaires, Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1, Bâtiment 10A, case 1003, Avenue du Général Leclerc, 35042 Rennes Cédex, France
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13
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Kaleta K, Kessler M, Beweries T, Arndt P, Spannenberg A, Rosenthal U. Different Inertness of Titanocene [Cp
2
Ti] and Decamethyltitanocene [Cp*
2
Ti] in Reactions with
N
,
N
‐Bis(trimethylsilyl)sulfurdiimide – Elimination of Tetramethylfulvene and Formation of Half‐Titanocene Complexes. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200242] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Katharina Kaleta
- Leibniz‐Institut für Katalyse e.V. an der Universität Rostock, Albert‐Einstein‐Str. 29a, 18059 Rostock, Germany, Fax: +49‐381‐1281‐51104, ‐51176
| | - Monty Kessler
- Leibniz‐Institut für Katalyse e.V. an der Universität Rostock, Albert‐Einstein‐Str. 29a, 18059 Rostock, Germany, Fax: +49‐381‐1281‐51104, ‐51176
| | - Torsten Beweries
- Leibniz‐Institut für Katalyse e.V. an der Universität Rostock, Albert‐Einstein‐Str. 29a, 18059 Rostock, Germany, Fax: +49‐381‐1281‐51104, ‐51176
| | - Perdita Arndt
- Leibniz‐Institut für Katalyse e.V. an der Universität Rostock, Albert‐Einstein‐Str. 29a, 18059 Rostock, Germany, Fax: +49‐381‐1281‐51104, ‐51176
| | - Anke Spannenberg
- Leibniz‐Institut für Katalyse e.V. an der Universität Rostock, Albert‐Einstein‐Str. 29a, 18059 Rostock, Germany, Fax: +49‐381‐1281‐51104, ‐51176
| | - Uwe Rosenthal
- Leibniz‐Institut für Katalyse e.V. an der Universität Rostock, Albert‐Einstein‐Str. 29a, 18059 Rostock, Germany, Fax: +49‐381‐1281‐51104, ‐51176
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14
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Some Main Group Chemical Perceptions in the Light of Experimental Charge Density Investigations. STRUCTURE AND BONDING 2012. [DOI: 10.1007/430_2011_71] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
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Michel O, Yamamoto K, Tsurugi H, Maichle-Mössmer C, Törnroos KW, Mashima K, Anwander R. Reactivity of Permethylated Magnesium Complexes toward β-Diimines. Organometallics 2011. [DOI: 10.1021/om200361m] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Olaf Michel
- Institut für Anorganische Chemie, Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
| | - Koji Yamamoto
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Hayato Tsurugi
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Cäcilia Maichle-Mössmer
- Institut für Anorganische Chemie, Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany
| | - Karl W. Törnroos
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
| | - Kazushi Mashima
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Reiner Anwander
- Institut für Anorganische Chemie, Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
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Schulz T, Deuerlein S, Stalke D. Magnesium Diimidosulfinates – Conformational Studies in the Solid State and in Solution. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000045] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Thomas Schulz
- Institut für Anorganische Chemie, Georg‐August Universität Göttingen, Tammannstr. 4, 37077 Göttingen, Germany, Fax: +49‐551‐393459
| | - Stephan Deuerlein
- Institut für Anorganische Chemie, Georg‐August Universität Göttingen, Tammannstr. 4, 37077 Göttingen, Germany, Fax: +49‐551‐393459
| | - Dietmar Stalke
- Institut für Anorganische Chemie, Georg‐August Universität Göttingen, Tammannstr. 4, 37077 Göttingen, Germany, Fax: +49‐551‐393459
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18
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Affiliation(s)
- Thomas Schulz
- Institut für Anorganische Chemie, Georg‐August Universität Göttingen, Tammannstr. 4, 37077 Göttingen, Germany, Fax: +49‐551/393459
| | - Dietmar Stalke
- Institut für Anorganische Chemie, Georg‐August Universität Göttingen, Tammannstr. 4, 37077 Göttingen, Germany, Fax: +49‐551/393459
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19
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Deuerlein S, Leusser D, Flierler U, Ott H, Stalke D. [(thf)Li2{H2CS(NtBu)2}]2: Synthesis, Polymorphism, and Experimental Charge Density to Elucidate the Bonding Properties of a Lithium Sulfur Ylide. Organometallics 2008. [DOI: 10.1021/om800046n] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Stephan Deuerlein
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstrasse 4, 37077 Göttingen, Germany
| | - Dirk Leusser
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstrasse 4, 37077 Göttingen, Germany
| | - Ulrike Flierler
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstrasse 4, 37077 Göttingen, Germany
| | - Holger Ott
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstrasse 4, 37077 Göttingen, Germany
| | - Dietmar Stalke
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstrasse 4, 37077 Göttingen, Germany
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Barrett AGM, Gray AA, Hill MS, Hitchcock PB, Procopiou PA, White AJP. Imino Sulfinamidines: Synthesis and Coordination Chemistry of a Novel Class of Chiral Bidentate Ligands. Inorg Chem 2006; 45:3352-8. [PMID: 16602794 DOI: 10.1021/ic052104m] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The new imino sulfinamidine ligand PhS(NHt-Bu)=NC(Me)=N(C6H3-2,6-iPr2), LH (11) was synthesized from N-(2,6-diisopropylphenyl)acetamidine (9) and N-tert-butyl phenylsulfinimidoyl chloride (10). Reaction of LH (11) with ZnEt2 or AlMe3 gave the complexes LZnEt (12) and LAlMe2 (13), respectively. The structures of 12 and 13 were determined by X-ray diffraction and were shown to contain L as a kappa2-N1,N5 bidentate ligand in a six-membered chelate. Formation of the magnesium complex (LMgN(TMS)2 x L2Mg) (14) from 11, MgI2, and KN(SiMe3)2 highlighted a secondary coordination mode of L, binding through the sulfinamidine nitrogens in a four-membered chelate.
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Thomas F, Schulz S, Nieger M. Synthesis of Thermolabile Zinc-Pentel Compounds under Kinetically Controlled Reaction Conditions. Angew Chem Int Ed Engl 2005; 44:5668-70. [PMID: 16075428 DOI: 10.1002/anie.200500688] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Thomas F, Schulz S, Nieger M. Synthese thermolabiler Zink-Pentel-Verbindungen unter kinetisch kontrollierten Reaktionsbedingungen. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200500688] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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23
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Braun U, Habereder T, Nöth H. Lithium
tert
‐Butyl[phenyl(2,2,6,6‐tetramethylpiperidino)boryl]amide: A Versatile Reagent. Eur J Inorg Chem 2004. [DOI: 10.1002/ejic.200400161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ulrike Braun
- Department of Chemistry, University of Munich, Butenandtstr. 5−13, 81377 München, Germany
| | - Tassilo Habereder
- Department of Chemistry, University of Munich, Butenandtstr. 5−13, 81377 München, Germany
| | - Heinrich Nöth
- Department of Chemistry, University of Munich, Butenandtstr. 5−13, 81377 München, Germany
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Leusser D, Henn J, Kocher N, Engels B, Stalke D. S=N versus S+-N-: an experimental and theoretical charge density study. J Am Chem Soc 2004; 126:1781-93. [PMID: 14871110 DOI: 10.1021/ja038941+] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
To elucidate the bonding situation in the widely discussed hypervalent sulfur nitrogen species, the charge density distributions rho(r) and related properties of four representative compounds, methyl(diimido)sulfinic acid H(NtBu)(2)SMe (1), methylene-bis(triimido)sulfonic acid H(2)C[S(NtBu)(2) (NHtBu)](2) (2), sulfurdiimide S(NtBu)(2) (3), and sulfurtriimide S(NtBu)(3) (4), were determined experimentally by high-resolution low-temperature X-ray diffraction experiments (T = 100 K). This set of molecules represents an ideal frame of reference for the comparison of SN bonding modes, because they contain short formal S=N double bonds as well as long S-N single bonds, some of them influenced by inter- or intramolecular hydrogen bonds. For comparison, the gas-phase ab initio calculations of the four model compounds, H(NMe)(2)SMe, H(2)C[S(NMe)(2)(NHMe)](2), S(NMe)(2), and S(NMe)(3), were performed. The topological features were found to be not particularly sensitive with respect to different substituents R (R = H, Me, tBu). In this paper, it is documented that theory and experiment differ in the eigenvalues of the Hessian matrix because of systematically differing positions of the bond critical points but agree very well concerning the spatial Laplacian distribution and the distinct polarization of all investigated sulfur-nitrogen bonds. Both recommend the S(+)-N(-) formulation of sulfur nitrogen bonds in 1 and 2 since all nitrogen atoms are found to be sp(3) hybridized. The planar SNx (x = 2, 3) units in the diimide 3 and the triimide 4 reveal characteristics of m-center-n-electron systems. For none of the investigated S-N bonds, a classical double bond formulation can be supported. This is further substantiated by the NBO/NRT approach. Valence expansion to more than eight electrons at the sulfur atom can definitely be excluded to explain the bonding.
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Affiliation(s)
- D Leusser
- Institutes of Inorganic and Organic Chemistry, Julius-Maximilians-University of Würzburg, Am Hubland, 97074 Würzburg, Germany
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25
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Selinka C, Deuerlein S, Häuser T, Stalke D. Heteroaromatic substituted diimidosulfinates. Inorganica Chim Acta 2004. [DOI: 10.1016/j.ica.2003.12.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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26
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Welch GC, Piers WE, Parvez M, McDonald R. Neutral and Cationic Organoaluminum Complexes Utilizing a Novel Anilido−Phosphinimine Ancillary Ligand. Organometallics 2004. [DOI: 10.1021/om034302w] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gregory C. Welch
- Department of Chemistry, University of Calgary, 2500 University Drive, NW, Calgary, Alberta, Canada T2N 1N4, and X-ray Structure Laboratory, Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Warren E. Piers
- Department of Chemistry, University of Calgary, 2500 University Drive, NW, Calgary, Alberta, Canada T2N 1N4, and X-ray Structure Laboratory, Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Masood Parvez
- Department of Chemistry, University of Calgary, 2500 University Drive, NW, Calgary, Alberta, Canada T2N 1N4, and X-ray Structure Laboratory, Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Robert McDonald
- Department of Chemistry, University of Calgary, 2500 University Drive, NW, Calgary, Alberta, Canada T2N 1N4, and X-ray Structure Laboratory, Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
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27
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Clare B, Sarker N, Shoemaker R, Hagadorn JR. Synthesis and Characterization of Binucleating Bis(amidinate) Ligands and Their Dialuminum Complexes. Inorg Chem 2004; 43:1159-66. [PMID: 14753840 DOI: 10.1021/ic035035p] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Two general routes to binucleating bis(amidinate) ligands based on dibenzofuran and 9,9-dimethylxanthene backbones are reported. The free-base form of one of the ligands, (Ph,Mes)L(DBF)H(2), forms a 1:1 adduct with acetone. Single-crystal X-ray diffraction of this adduct reveals bidentate H-bonding of the bis(amidine) to the ketone oxygen. Bond lengths suggest that the individual H-bonds are relatively weak, yet IR spectroscopy shows a significant -26 cm(-1) shift for the carbonyl stretch relative to free acetone. Additionally, the new dialuminum complexes (i)(Pr)L(DBF)Al(2)Me(4) (3), (i)(Pr)L(Xan)Al(2)Me(4) (4), (t)(Bu,Et)L(DBF)Al(2)Me(4) (5), and (t)(Bu,Et)L(Xan)Al(2)Me(4) (6) are prepared by reaction of Al(2)Me(6) with the bis(amidines) in toluene solution. (1)H NMR spectroscopic studies indicate that 3 and 4 interact weakly with certain Lewis bases (DMSO, DMF, pyridine) to effect the exchange of the Al-bound Me groups. Other bases, such as THF and TMEDA, fail to interact. Solid-state structures for 3 and 4 are reported.
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Affiliation(s)
- Bronya Clare
- Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309-0215, USA
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Bickley JF, Copsey MC, Jeffery JC, Leedham AP, Russell CA, Stalke D, Steiner A, Stey T, Zacchini S. From the tetra(amino) phosphonium cation, [P(NHPh)4]+, to the tetra(imino) phosphate trianion, [P(NPh)4]3−, two-faced ligands that bind anions and cations. Dalton Trans 2004:989-95. [PMID: 15252677 DOI: 10.1039/b400798k] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The tetraanilino phosphonium cation, [P(N(H)Ph)4]+, 1+, is sequentially deprotonated by Bu(n)Li in thf. The deprotonation reaction of the chloride derivative, Cl, was monitored by (31)P NMR, which revealed the successive formation of the neutral [P(N(H)Ph)3(NPh)], 2, the monoanionic [P(N(H)Ph)2(NPh)2]-, 3-, the dianionic [P(N(H)Ph)(NPh)3]2-, 4(2-), and finally the trianionic species [P(NPh)(4)](3-), (3-). Considering the isoelectronic relationship of oxo, =O, and imino groups, =NR, as well as hydroxy, -OH, and amino groups, -N(H)R, the neutral complex corresponds to phosphoric acid, H3PO4, whereas the anions 3-, 4(2-) and 5(3-) are analogues of dihydrogen phosphate, H2PO4-, monohydrogenphosphate, HPO4(2-), and orthophosphate ions, PO4(3-), respectively. Solid state structures were obtained of 1Cl, 2LiCl(thf)(2), 3Li(thf)(3.5), 3Li(2)Cl(thf)(4.25), 3Li(2)Cl(thf)(6) and 5Li(4)Cl(thf)(4). All systems provide two separate N-P-N chelation sites at opposite ligand faces, either consisting of the di(amino) arrangement P(NH)(2), acting as a double H-bond donor, the di(imino) arrangement PN(2), donating two electron pairs, or the mixed amino imino arrangement P(N)(NH), which supplies both electron pair and H-donor site. Interesting in this aspect is the mixed amino imino derivative 3- which has the ability to chelate a Lewis acid, such as a metal ion, at one face and a Lewis base, such as an anionic or neutral donor at the opposite ligand face. The formation of 1-D aggregates and the entrapment of lithium chloride are key characteristics of the supramolecular structures of the discussed complexes.
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Affiliation(s)
- Jamie F Bickley
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, UK
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Affiliation(s)
- Carola Selinka
- Institut für Anorganische Chemie der Universität Würzburg Am Hubland, 97074 Würzburg, Germany, Fax: (internat.) +49‐(0)931/888‐4619
| | - Dietmar Stalke
- Institut für Anorganische Chemie der Universität Würzburg Am Hubland, 97074 Würzburg, Germany, Fax: (internat.) +49‐(0)931/888‐4619
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Rivals F, Steiner A. Synthesis and Structure of [{(THF)2Li}3Me2Al{(PhNH)2(PhN)4P3N3}], the First Mixed-Metal Phosphazenate Complex. Eur J Inorg Chem 2003. [DOI: 10.1002/ejic.200300222] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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31
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Hinchley SL, Trickey P, Robertson HE, Smart BA, Rankin DWH, Leusser D, Walfort B, Stalke D, Bühl M, Obrey SJ. Bis(tert-butyl)sulfurdiimide, S(NBut)2, and tris(tert-butyl)sulfurtriimide, S(NBut)3: structures by gas electron diffraction, X-ray crystallography and ab initio calculations. ACTA ACUST UNITED AC 2002. [DOI: 10.1039/b207193b] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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