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Mies T, White AJP, Rzepa HS, Barluzzi L, Devgan M, Layfield RA, Barrett AGM. Syntheses and Characterization of Main Group, Transition Metal, Lanthanide, and Actinide Complexes of Bidentate Acylpyrazolone Ligands. Inorg Chem 2023; 62:13253-13276. [PMID: 37549423 PMCID: PMC10445273 DOI: 10.1021/acs.inorgchem.3c01506] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Indexed: 08/09/2023]
Abstract
The synthesis of acylpyrazolone salts and their complexes of main group elements, transition metals, lanthanides, and actinides are described and characterized inter alia by means of single-crystal X-ray crystallography, NMR, and IR spectroscopies. The complexes consist of two, three, or four acylprazolone ligands bound to the metal atom, resulting in a structurally diverse set of coordination complexes with (distorted) octahedral, pentagonal-bipyramidal, or antiprismatic arrangements. Several complexes proved to be polymeric in the solid state including heterobimetallic sodium/lanthanide coordination polymers. A selection of the polymeric compounds was analyzed via TG/DTA measurements to establish their stability. The ligands, in turn, were readily synthesized in good yields from commercially available hydrazine hydrochloride salts. These findings demonstrate that acylpyrazolone ligands can form complexes with metals of varying ionic radii, highlighted by their utility in other areas such as analytical and metal organic framework chemistry.
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Affiliation(s)
- Thomas Mies
- Department
of Chemistry, Imperial College, Molecular
Sciences Research Hub, White City Campus, 82 Wood Lane, London W12 0BZ, England
| | - Andrew J. P. White
- Department
of Chemistry, Imperial College, Molecular
Sciences Research Hub, White City Campus, 82 Wood Lane, London W12 0BZ, England
| | - Henry S. Rzepa
- Department
of Chemistry, Imperial College, Molecular
Sciences Research Hub, White City Campus, 82 Wood Lane, London W12 0BZ, England
| | - Luciano Barluzzi
- Department
of Chemistry, University of Sussex, Falmer, Brighton BN1 9QR, England
| | - Mohit Devgan
- Department
of Chemistry, Imperial College, Molecular
Sciences Research Hub, White City Campus, 82 Wood Lane, London W12 0BZ, England
| | - Richard A. Layfield
- Department
of Chemistry, University of Sussex, Falmer, Brighton BN1 9QR, England
| | - Anthony G. M. Barrett
- Department
of Chemistry, Imperial College, Molecular
Sciences Research Hub, White City Campus, 82 Wood Lane, London W12 0BZ, England
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Willauer AR, Fadaei-Tirani F, Zivkovic I, Sienkiewicz A, Mazzanti M. Structure and Reactivity of Polynuclear Divalent Lanthanide Disiloxanediolate Complexes. Inorg Chem 2022; 61:7436-7447. [PMID: 35505299 DOI: 10.1021/acs.inorgchem.2c00479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Trinuclear molecular complexes of europium (II) and ytterbium(II) [Ln3{(Ph2SiO)2O}3(THF)6], 1-Ln3L3 (Ln = Eu and Yb), supported by the dianionic tetraphenyl disiloxanediolate ligand, were synthesized via protonolysis of the [Ln{N(SiMe3)2}2(THF)2] complexes. In contrast, the reaction of [Sm{N(SiMe3)2}2(THF)2] with the (Ph2SiOH)2O ligand led to the isolation of the mixed-valent Sm(II)/Sm(III) complex [Sm3{(Ph2SiO)2O}3{N(SiMe3)2}(THF)4], 2-Sm3L3, which was crystallographically characterized. The Eu(II) complex 1-Eu3L3 displays weak ferromagnetic coupling between the Eu(II) metal centers (J = 0.1035 cm-1). The addition of 3 equiv of (Ph2SiOK)2O to 1-Eu3L3 resulted in the formation of the polynuclear Eu(II) dimer of dimers [K4Eu2{(Ph2SiO)2O}4(Et2O)2]2, 3-Eu2L4. Complexes 1-Ln3L3 (Ln = Eu and Yb) are stable in solution at room temperature, while 3-Eu2L4 shows higher reactivity and rapidly decomposes to give the mixed-valent Eu(II)/Eu(III) species [K3Eu2{(Ph2SiO)2O}4], 4-Eu2L4. Complex 1-Yb3L3 affects the slow reductive disproportionation of carbon dioxide, but 1-Eu3L3 does not display any reactivity toward CO2. However, the presence of one additional (Ph2SiO-)2O per Eu(II) metal center in 3-Eu2L4 increases dramatically the reductive ability of the Eu(II) metal centers, affording the first example of carbon dioxide activation by an isolated divalent europium complex. The reduction of CO2 by 3-Eu2L4 is immediate, and carbonate is formed selectively after the addition of a stoichiometric amount of CO2.
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Affiliation(s)
- Aurélien R Willauer
- Group of Coordination Chemistry, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Farzaneh Fadaei-Tirani
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Ivica Zivkovic
- Laboratory for Quantum Magnetism, Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Andrzej Sienkiewicz
- Laboratory for Quantum Magnetism, Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.,ADSresonances Sàrl; Route de Genève 60B, 1028 Préverenges, Switzerland
| | - Marinella Mazzanti
- Group of Coordination Chemistry, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
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Reza Ghiasi, Neda Najjari Milani. Exploring of the Solvent Effect on the Electronic Structure and 14N NMR Chemical Shift of Cyclic-N3S3Cl3: A Computational Investigation. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2021. [DOI: 10.1134/s1990793121090086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Coordination chemistry of organometallic or inorganic binary group 14/16 units towards d-block and f-block metal atoms. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2018.09.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Lorenz V, Ehle S, Liebing P, Engelhardt F, Hashemi-Haeri H, Oehler F, Hinderberger D, Busse S, Urbaschok J, Edelmann FT. High-yield synthesis of a unique Mn(iii) siloxide complex through KMnO 4 oxidation of a Mn(ii) precursor. Dalton Trans 2017; 47:62-66. [PMID: 29226937 DOI: 10.1039/c7dt03500d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A unique trivalent manganese siloxide complex, blue-violet MnIIILi2Cl[(Ph2SiO)2O]2(THF)4·2THF (3) has been prepared by a straightforward two-step synthetic protocol. Lithiation of (Ph2SiOH)2O (1) followed by reaction with MnCl2(THF)2 gave the structurally remarkable Mn(ii) precursor MnIILi4Cl2[(Ph2SiO)2O]2(THF)5·2THF (2). Surprisingly, the final oxidation step could be achieved using KMnO4 in THF to provide the Mn(iii) species 3 in high yield (91%). Both title compounds were structurally characterized by single-crystal X-ray diffraction.
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Affiliation(s)
- Volker Lorenz
- Chemisches Institut der Otto-von-Guericke-Universität, 39106 Magdeburg, Germany.
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Rausch J, Liebing P, Lorenz V, Hrib CG, Ali A, Groß P, Hilfert L, Busse S, Edelmann FT. Synthesis and Structural Characterization of Homo- and Heterometallic Li and Li/ LnDisiloxanediolate Complexes. Z Anorg Allg Chem 2017. [DOI: 10.1002/zaac.201700324] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Janek Rausch
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg; Universitätsplatz 2 39106 Magdeburg Germany
| | - Phil Liebing
- Laboratorium für Anorganische Chemie; ETH Zürich; Vladimir-Prelog-Weg 1-5/10 8093 Zürich Switzerland
| | - Volker Lorenz
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg; Universitätsplatz 2 39106 Magdeburg Germany
| | - Cristian G. Hrib
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg; Universitätsplatz 2 39106 Magdeburg Germany
| | - Asim Ali
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg; Universitätsplatz 2 39106 Magdeburg Germany
| | - Patrick Groß
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg; Universitätsplatz 2 39106 Magdeburg Germany
| | - Liane Hilfert
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg; Universitätsplatz 2 39106 Magdeburg Germany
| | - Sabine Busse
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg; Universitätsplatz 2 39106 Magdeburg Germany
| | - Frank T. Edelmann
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg; Universitätsplatz 2 39106 Magdeburg Germany
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McNerney B, Mummadi S, Hung-Low F, Cordes DB, Unruh DK, Krempner C. Synthesis and structure of sterically overloaded tetra-coordinated yttrium and lanthanum disiloxides. INORG CHEM COMMUN 2016. [DOI: 10.1016/j.inoche.2016.05.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Ali A, Langer M, Lorenz V, Hrib CG, Hilfert L, Edelmann FT. Synthesis and structure of hexaphenyltrisiloxanediolates of sodium, titanium, and iron. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2014.11.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Rausch J, Lorenz V, Hrib CG, Frettlöh V, Adlung M, Wickleder C, Hilfert L, Jones PG, Edelmann FT. Heterometallic europium disiloxanediolates: synthesis, structural diversity, and photoluminescence properties. Inorg Chem 2014; 53:11662-74. [PMID: 25330143 DOI: 10.1021/ic501837x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
This contribution presents a full account of a structurally diverse class of heterometallic europium disiloxanediolates. The synthetic protocol involves in situ metalation of (HO)SiPh2OSiPh2(OH) (1) with either (n)BuLi or KN(SiMe3)2 followed by treatment with EuCl3 in suitable solvents such as 1,2-dimethoxyethane (DME) or tetrahydrofuran (THF). Reaction of EuCl3 with 2 equiv of (LiO)SiPh2OSiPh2(OLi) in DME afforded the Eu(III) bis(disiloxanediolate) "ate" complex [{(Ph2SiO)2O}2{Li(DME)}3]EuCl2 (2), which upon attempted reduction with Zn gave the tris(disiloxanediolate) [{(Ph2SiO)2O}3{Li(DME)}3]Eu (3). Treatment of EuCl3 with (LiO)SiPh2OSiPh2(OLi) in a molar ratio of 1:2 yielded both the ate complex [{(Ph2SiO)2O}3Li{Li(THF)2}{Li(THF)}]EuCl·Li(THF)3 (4) and the LiCl-free europium(III) complex [{(Ph2SiO)2O}2{Li(THF)2}2]EuCl (5). Compound 5 was found to exhibit a brilliant red triboluminescence. When (KO)SiPh2OSiPh2(OK) was used as starting material in a 3:1 reaction with EuCl3, the Eu(III) tris(disiloxanediolate) [{(Ph2SiO)2O}3{K(DME)}3]Eu (6) was isolated. Attempted ligand transfer between 5 and (DAD(Dipp))2Ba(DME) (DAD(Dipp) = N,N'-bis(2,6-diisopropylphenyl)-1,4-diaza-1,3-butadiene) afforded the unique mixed-valent Eu(III)/Eu(II) disiloxanediolate cluster [(Ph2SiO)2O]6Eu(II)4Eu(III)2Li4O2Cl2 (7). All new complexes were structurally characterized by X-ray diffraction. Photoluminescence studies were carried out for complex 5 showing an excellent color quality, due to the strong (5)D0→(7)F2 transition, but a weak antenna effect.
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Affiliation(s)
- Janek Rausch
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg , Universitätsplatz 2, 39106 Magdeburg, Germany
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Camp C, Kefalidis CE, Pécaut J, Maron L, Mazzanti M. Controlled Thermolysis of Uranium (Alkoxy)siloxy Complexes: A Route to Polymetallic Complexes of Low-Valent Uranium. Angew Chem Int Ed Engl 2013; 52:12646-50. [DOI: 10.1002/anie.201307291] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Revised: 09/12/2013] [Indexed: 11/10/2022]
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11
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Camp C, Kefalidis CE, Pécaut J, Maron L, Mazzanti M. Controlled Thermolysis of Uranium (Alkoxy)siloxy Complexes: A Route to Polymetallic Complexes of Low-Valent Uranium. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201307291] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Lorenz V, Hrib CG, Grote D, Hilfert L, Krasnopolski M, Edelmann FT. Diazadiene Complexes of the Heavy Alkaline-Earth Metals Strontium and Barium: Structures and Reactivity. Organometallics 2013. [DOI: 10.1021/om400622d] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Volker Lorenz
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg,
Germany
| | - Cristian G. Hrib
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg,
Germany
| | | | - Liane Hilfert
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg,
Germany
| | | | - Frank T. Edelmann
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg,
Germany
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Mansell SM, Farnaby JH, Germeroth AI, Arnold PL. Thermally Stable Uranium Dinitrogen Complex with Siloxide Supporting Ligands. Organometallics 2013. [DOI: 10.1021/om4003957] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Stephen M. Mansell
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, The King’s
Buildings, Edinburgh, EH9 3JJ, U.K
| | - Joy H. Farnaby
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, The King’s
Buildings, Edinburgh, EH9 3JJ, U.K
| | - Anne I. Germeroth
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, The King’s
Buildings, Edinburgh, EH9 3JJ, U.K
| | - Polly L. Arnold
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, The King’s
Buildings, Edinburgh, EH9 3JJ, U.K
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Huerta-Lavorie R, Solis-Ibarra D, Báez-Rodríguez DV, Reyes-Lezama M, de las Nieves Zavala-Segovia M, Jancik V. Heterometallic Alumo- and Gallodisilicates with M(O–Si–O)2M′ and [M(O–Si–O)2]2M′ Cores (M = Al, Ga; M′ = Ti, Zr, Hf). Inorg Chem 2013; 52:6934-43. [DOI: 10.1021/ic400156n] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Raúl Huerta-Lavorie
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Car. Toluca-Atlacomulco km 14.5, Toluca 50200, Estado de México,
México
| | - Diego Solis-Ibarra
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Car. Toluca-Atlacomulco km 14.5, Toluca 50200, Estado de México,
México
| | - Dana Victoria Báez-Rodríguez
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Car. Toluca-Atlacomulco km 14.5, Toluca 50200, Estado de México,
México
| | - Marisol Reyes-Lezama
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Car. Toluca-Atlacomulco km 14.5, Toluca 50200, Estado de México,
México
| | - M. de las Nieves Zavala-Segovia
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Car. Toluca-Atlacomulco km 14.5, Toluca 50200, Estado de México,
México
| | - Vojtech Jancik
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Car. Toluca-Atlacomulco km 14.5, Toluca 50200, Estado de México,
México
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Tan G, Xiong Y, Inoue S, Enthaler S, Blom B, Epping JD, Driess M. From elusive thio- and selenosilanoic acids to copper(i) complexes with intermolecular SiE → Cu–O–Si coordination modes (E = S, Se). Chem Commun (Camb) 2013; 49:5595-7. [DOI: 10.1039/c3cc41965g] [Citation(s) in RCA: 14] [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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Krempner C. Role of Siloxides in Transition Metal Chemistry and Homogeneous Catalysis. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100044] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Clemens Krempner
- Department of Chemistry and Biochemistry, Texas Tech University, Box 41061, Lubbock, Texas, 79409‐1061, USA, Fax: +1‐806‐742‐1289
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Lorenz V, Edelmann A, Gießmann S, Hrib CG, Blaurock S, Edelmann F. Disiloxanediolates and Metallasilsesquioxanes of the Rare Earth Elements. Z Anorg Allg Chem 2010. [DOI: 10.1002/zaac.201000188] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Edelmann A, Blaurock S, Hrib C, Edelmann FT. Double InMe2 insertion into a 12-membered Si4O6Li2 inorganic ring system coordinated to praseodymium. J Organomet Chem 2010. [DOI: 10.1016/j.jorganchem.2009.11.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Liu L, Lu H, Wang H, Bei Y, Feng S. Luminescent organo-polysiloxanes containing complexed lanthanide ions. Appl Organomet Chem 2009. [DOI: 10.1002/aoc.1536] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Gießmann S, Blaurock S, Edelmann A, Lorenz V, Edelmann FT. Siloxanediolates of the Rare Earth Elements - An Eight-Membered Inorganic Ring System containing Ytterbium. Z Anorg Allg Chem 2008. [DOI: 10.1002/zaac.200800303] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Gießmann S, Blaurock S, Edelmann FT. An Unusual Heterobimetallic Disiloxanediolate Cluster of Samarium(III). Z Anorg Allg Chem 2008. [DOI: 10.1002/zaac.200700367] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Giessmann S, Blaurock S, Lorenz V, Edelmann FT. Unusual Inorganic Ring Systems of Scandium and Yttrium Containing Group 13 Metals: Coordination of Monomeric Me2InOMe to Yttrium. Inorg Chem 2007; 46:10956-8. [DOI: 10.1021/ic701909m] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Stephan Giessmann
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
| | - Steffen Blaurock
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
| | - Volker Lorenz
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
| | - Frank T. Edelmann
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
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Giessmann S, Blaurock S, Lorenz V, Edelmann FT. Structural Varieties in Heterobimetallic Lanthanide Disiloxanediolates: “Inorganic Metallocenes” versus In-Plane Metallacrowns. Inorg Chem 2007. [DOI: 10.1021/ic701227n 10.1021/ic701227n] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Stephan Giessmann
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
| | - Steffen Blaurock
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
| | - Volker Lorenz
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
| | - Frank T. Edelmann
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
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Giessmann S, Blaurock S, Lorenz V, Edelmann FT. Structural Varieties in Heterobimetallic Lanthanide Disiloxanediolates: “Inorganic Metallocenes” versus In-Plane Metallacrowns. Inorg Chem 2007; 46:10383-9. [PMID: 17910441 DOI: 10.1021/ic701227n] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The previously proposed concept of "inorganic metallocenes" of group 3 and rare-earth elements has been tested by preparing a series of novel disiloxanediolates with metals displaying different ionic radii. For the smaller scandium and yttrium, approximately planar arrangements of the disiloxanediolate frameworks with solvent and chloride ligands in trans positions were found. Thus, the compounds [{(Ph2SiO)2O}2{Li(DME)}2]ScCl(THF/DME) (2; DME=1,2-dimethoxyethane and THF=tetrahydrofuran) and [{(Ph2SiO)2O}2{Li(THF)2}2]YCl(THF) (3) can be described as heterobimetallic inorganic ring systems or metallacrown complexes with "in-plane" coordination of the metal. In contrast, "out-of-plane" geometries with cis coordination of additional ligands were identified in the praseodymium derivatives [{(Ph2SiO)2O}2{Li(THF)2}{Li(THF)}]Pr(micro-Cl)2Li(THF)2 (4) and [{(Ph2SiO)2O}2{Li(DME)}2]PrCl(DME) (5). These compounds can be viewed as analogues of the known metallocene derivatives (C5Me5)2Pr(micro-Cl)2Li(THF)2 and (C5Me5)2PrCl(THF). The molecular structures of 2-5 have been determined by X-ray diffraction.
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Affiliation(s)
- Stephan Giessmann
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
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Meermann C, Sirsch P, Törnroos KW, Anwander R. Synthesis and structural characterization of scandium SALEN complexes. Dalton Trans 2006:1041-50. [PMID: 16474890 DOI: 10.1039/b513370j] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of heteroleptic scandium SALEN complexes, [(SALEN)Sc(mu-Cl)]2 and (SALEN)Sc[N(SiHMe2)2] is obtained via amine elimination reactions using [Sc(N(i)Pr2)2(mu-Cl)(THF)]2 and Sc[N(SiHMe2)2]3(THF) as metal precursors, respectively. H(2)SALEN ligand precursors comprising H2Salen [(1,2-ethandiyl)bis(nitrilomethylidyne)bis(2,4-di-tert-butyl)phenol], H2Salpren [(2,2-dimethylpropanediyl)bis(nitrilomethylidyne)bis(2,4-di-tert-butyl)phenol], H2Salcyc [(1R,2R)-(-)-1,2-cyclohexanediyl)bis(nitrilomethylidyne)bis(2,4-di-tert-butyl)phenol] and H2Salphen [((1S,2S)-(-)-1,2-diphenylethandiyl)bis(nitrilomethylidyne)bis(2,4-di-tert-butyl)phenol] are selected according to solubility and ligand backbone variation ("=N-(R)-N=" bite angle) criteria. Consideration is given to the feasibility of [Cl --> NR2] and [N(SiHMe2)2--> OSiR3] secondary ligand exchange reactions. X-ray crystal structure analyses of donor-free (Salpren)Sc(N(i)Pr2), (R,R)-(Salcyc)Sc[N(SiHMe2)2], (Salen)Sc(OSi(t)BuPh2) and (Salphen)Sc(OSiH(t)Bu2) reveal (i) a very short Sc-N bond distance of 2.000(3) A, (ii) weak beta(Si-H)(amido)-Sc agostic interactions and (iii) an exclusive intramolecularly tetradentate and intrinsically bent coordination mode of the SALEN ligands with angle(Ph,Ph) dihedral angles and Sc-[N(2)O(2)] distances in the 124.27(9)-127.7(3) degrees and 0.638(1)-0.688(1) A range, respectively.
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Ephritikhine M. The vitality of uranium molecular chemistry at the dawn of the XXIst century. Dalton Trans 2006:2501-16. [PMID: 16718334 DOI: 10.1039/b603463b] [Citation(s) in RCA: 264] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The intent of this Dalton Perspective is to highlight the recent advances in uranium molecular chemistry, with the results reported during the 2000-2006 period. This discipline is currently witnessing an impressive development, together with the theoretical chemistry and solid-state chemistry of the f-elements, and its face has profoundly changed, revealing unsuspected structural and reactivity features. This progress required and was facilitated by the use of new precursors. Studies of low-valent compounds gave a better insight into lanthanide(III)/actinide(III) differentiation and led to the discovery of unusual reactions, including activation of small molecules. A number of tetravalent uranium complexes, in particular polynuclear compounds, have been synthesized, which exhibit exciting structures and physicochemical properties. The potential of uranium(III) and uranium(IV) complexes in catalysis has been confirmed. The uranyl complexes, from mononuclear species to supramolecular assemblies, reveal a variety of novel structures, changing the generally accepted ideas on the coordination geometry and the stability of the UO2(2+) ion.
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Affiliation(s)
- Michel Ephritikhine
- Service de Chimie Moléculaire, DSM, DRECAM, Laboratoire Claude Fréjacques (CNRS URA 331), CEA/Saclay, 91191, Gif-sur-Yvette, France.
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Gopalakrishnan J, Varghese B, Doddi A, Sudheendra Rao MN. A new synthetic route to cyclophosphadithiatriazenes: synthesis and X-ray structural characterization of the first spirocycle containing thiadiazaphosphetidine and phosphadithiatriazene heterocycles. Appl Organomet Chem 2006. [DOI: 10.1002/aoc.1148] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Son SU, Reingold JA, Kim SB, Carpenter GB, Sweigart DA. Lithium Alkoxide {Li4O4} Cubanes Bridged by Rhodium-Quinonoid Organometalloligands. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200503050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Son SU, Reingold JA, Kim SB, Carpenter GB, Sweigart DA. Lithium Alkoxide {Li4O4} Cubanes Bridged by Rhodium-Quinonoid Organometalloligands. Angew Chem Int Ed Engl 2005; 44:7710-5. [PMID: 16276542 DOI: 10.1002/anie.200503050] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Seung Uk Son
- Department of Chemistry, Sungkyunkwan University, Suwon, Korea
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Scholz J, Görls H, Schumann H, Weimann R. Reaction of Samarium 1,4-Diaza-1,3-diene Complexes with Ketones: Generation of a New Versatile Tridentate Ligand via 1,3-Dipolar Cycloaddition. Organometallics 2001. [DOI: 10.1021/om010323j] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Joachim Scholz
- Institut für Chemie, Universität Koblenz-Landau, Rheinau 1, D-56075 Koblenz, Germany, Institut für Anorganische und Analytische Chemie, Friedrich-Schiller-Universität Jena, Lessingstrasse 8, D-07743 Jena, Germany, and Institut für Anorganische und Analytische Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, D-10623 Berlin, Germany
| | - Helmar Görls
- Institut für Chemie, Universität Koblenz-Landau, Rheinau 1, D-56075 Koblenz, Germany, Institut für Anorganische und Analytische Chemie, Friedrich-Schiller-Universität Jena, Lessingstrasse 8, D-07743 Jena, Germany, and Institut für Anorganische und Analytische Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, D-10623 Berlin, Germany
| | - Herbert Schumann
- Institut für Chemie, Universität Koblenz-Landau, Rheinau 1, D-56075 Koblenz, Germany, Institut für Anorganische und Analytische Chemie, Friedrich-Schiller-Universität Jena, Lessingstrasse 8, D-07743 Jena, Germany, and Institut für Anorganische und Analytische Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, D-10623 Berlin, Germany
| | - Roman Weimann
- Institut für Chemie, Universität Koblenz-Landau, Rheinau 1, D-56075 Koblenz, Germany, Institut für Anorganische und Analytische Chemie, Friedrich-Schiller-Universität Jena, Lessingstrasse 8, D-07743 Jena, Germany, and Institut für Anorganische und Analytische Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, D-10623 Berlin, Germany
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