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Harmgarth N, Liebing P, Lorenz V, Engelhardt F, Hilfert L, Busse S, Goldhahn R, Edelmann FT. Synthesis and Structural Characterization of p-Carboranylamidine Derivatives. Molecules 2023; 28:molecules28093837. [PMID: 37175246 PMCID: PMC10179778 DOI: 10.3390/molecules28093837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 04/27/2023] [Accepted: 04/27/2023] [Indexed: 05/15/2023] Open
Abstract
In this contribution, the first amidinate and amidine derivatives of p-carborane are described. Double lithiation of p-carborane (1) with n-butyllithium followed by treatment with 1,3-diorganocarbodiimides, R-N=C=N-R (R = iPr, Cy (= cyclohexyl)), in DME or THF afforded the new p-carboranylamidinate salts p-C2H10B10[C(NiPr)2Li(DME)]2 (2) and p-C2H10B10[C(NCy)2Li(THF)2]2 (3). Subsequent treatment of 2 and 3 with 2 equiv. of chlorotrimethylsilane (Me3SiCl) provided the silylated neutral bis(amidine) derivatives p-C2H10B10[C{iPrN(SiMe3)}(=NiPr)]2 (4) and p-C2H10B10[C{CyN(SiMe3)}(=NCy)]2 (5). The new compounds 3 and 4 have been structurally characterized by single-crystal X-ray diffraction. The lithium carboranylamidinate 3 comprises a rare trigonal planar coordination geometry around the lithium ions.
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Affiliation(s)
- Nicole Harmgarth
- Chemisches Institut, Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, 39106 Magdeburg, Germany
| | - Phil Liebing
- Institut für Anorganische und Analytische Chemie, Friedrich-Schiller-Universität Jena, Humboldtstr. 8, 07743 Jena, Germany
| | - Volker Lorenz
- Chemisches Institut, Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, 39106 Magdeburg, Germany
| | - Felix Engelhardt
- Chemisches Institut, Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, 39106 Magdeburg, Germany
| | - Liane Hilfert
- Chemisches Institut, Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, 39106 Magdeburg, Germany
| | - Sabine Busse
- Chemisches Institut, Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, 39106 Magdeburg, Germany
| | - Rüdiger Goldhahn
- Institut für Physik, Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, 39106 Magdeburg, Germany
| | - Frank T Edelmann
- Institut für Physik, Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, 39106 Magdeburg, Germany
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2
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Arras J, Ugarte Trejo O, Bhuvanesh N, McMillen C, Stollenz M. Hydrogen bonds and dispersion forces serving as molecular locks for tailored Group 11 bis(amidine) complexes. Inorg Chem Front 2022. [DOI: 10.1039/d2qi00443g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A flexible polydentate bis(amidine) ligand LH2 operates as a molecular lock for various coinage metal fragments and forms the dinuclear complexes [LH2(MCl)2], M = Cu (1), Au (2), the coordination...
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3
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Kretschmer R. Ligands with Two Monoanionic N,N-Binding Sites: Synthesis and Coordination Chemistry. Chemistry 2020; 26:2099-2119. [PMID: 31755598 PMCID: PMC7064907 DOI: 10.1002/chem.201903442] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 09/19/2019] [Indexed: 11/07/2022]
Abstract
Polytopic ligands have become ubiquitous in coordination chemistry because they grant access to a variety of mono- and polynuclear complexes of transition metals as well as rare-earth and main-group elements. Nitrogen-based ditopic ligands, in which two monoanionic N,N-binding sites are framed within one molecule, are of particular importance and are therefore the primary focus of this review. In detail, bis(amidine)s, bis(guanidine)s, bis(β-diimine)s, bis(aminotroponimine)s, bis(pyrrolimine)s, and miscellaneous bis(N,N-chelating) ligands are reviewed. In addition to the general synthetic protocols, the application of these ligands is discussed along with their coordination chemistry, the multifarious binding modes, and the ability of these ligands to bridge two (or more) metal(loids).
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Affiliation(s)
- Robert Kretschmer
- Junior Professorship Inorganic Chemistry of Catalysis, Institute of Inorganic and Analytical ChemistryFriedrich Schiller University JenaHumboldtstrasse 807743JenaGermany
- Jena Center for Soft Matter (JCSM)Friedrich Schiller University JenaPhilosophenweg 707743JenaGermany
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4
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5
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Kalden D, Görls H, Westerhausen M, Krieck S. Hexanuclear Wheel-Shaped Lithium N-(2,6-Diisopropylphenyl)- N′-(2-pyridylethyl)benzamidinate. Z Anorg Allg Chem 2019. [DOI: 10.1002/zaac.201800518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Diana Kalden
- Institute of Inorganic and Analytical Chemistry; Friedrich Schiller University Jena; Humboldtstraße 8 07743 Jena Germany
| | - Helmar Görls
- Institute of Inorganic and Analytical Chemistry; Friedrich Schiller University Jena; Humboldtstraße 8 07743 Jena Germany
| | - Matthias Westerhausen
- Institute of Inorganic and Analytical Chemistry; Friedrich Schiller University Jena; Humboldtstraße 8 07743 Jena Germany
| | - Sven Krieck
- Institute of Inorganic and Analytical Chemistry; Friedrich Schiller University Jena; Humboldtstraße 8 07743 Jena Germany
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6
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de Bruin‐Dickason CN, Deacon GB, Jones C, Junk PC, Wiecko M. Functionalised Alkaline Earth Iodides from Grignard Synthons “PhAeI(thf)
n
” (Ae = Mg‐Ba). Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201801489] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Glen B. Deacon
- School of Chemistry Monash University Clayton Vic. 3800 Australia
| | - Cameron Jones
- School of Chemistry Monash University Clayton Vic. 3800 Australia
| | - Peter C. Junk
- College of Science & Engineering James Cook University Townsville, Qld., 4811 Australia
| | - Michal Wiecko
- School of Chemistry Monash University Clayton Vic. 3800 Australia
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7
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Kirilova E, Bulanovs A, Puckins A, Romanovska E, Kirilov G. Spectral and structural characterization of chromium(III) complexes bearing 7-oxo-7H-benzo[de]anthracen-3-yl-amidines ligand. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.09.072] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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8
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Tutacz P, Harmgarth N, Zörner F, Liebing P, Hilfert L, Engelhardt F, Busse S, Edelmann FT. Two Series of New Volatile Rare-Earth Metal Tris(guanidinates) and Tris(amidinates). Z Anorg Allg Chem 2018. [DOI: 10.1002/zaac.201800393] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Peter Tutacz
- Institut für Anorganische Chemie; Universität zu Köln; Greinstr. 6 50939 Köln Germany
| | - Nicole Harmgarth
- Chemisches Institut der; Otto-von-Guericke-Universität Magdeburg; Universitätsplatz 2 39106 Magdeburg Germany
| | - Florian Zörner
- Chemisches Institut der; Otto-von-Guericke-Universität Magdeburg; Universitätsplatz 2 39106 Magdeburg Germany
| | - Phil Liebing
- 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
| | - Felix Engelhardt
- 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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9
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Brunner TS, Roesky PW. Enantiopure amidinate complexes of lutetium. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.03.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Skvortsov GG, Tolpygin AO, Fukin GK, Long J, Larionova J, Cherkasov AV, Trifonov AA. Rare‐Earth Complexes Coordinated by
ansa
‐Bis(amidinate) Ligands with
m
‐Phenylene, 2,6‐Pyridinediyl, and SiMe
2
Linkers. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700639] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Grigorii G. Skvortsov
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences 603950 Nizhny Novgorod, GSP‐445 Russia
| | - Aleksei O. Tolpygin
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences 603950 Nizhny Novgorod, GSP‐445 Russia
| | - Georgy K. Fukin
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences 603950 Nizhny Novgorod, GSP‐445 Russia
| | - Jérôme Long
- Institut Charles Gerhardt Montpellier ICGM UMR-5253 CNRS-UM-ENSCM Ingénierie Moléculaire et Nano-Objets Université de Montpellier site Triolet, Place E. Bataillon 34095 Montpellier Cedex 5 France
| | - Joulia Larionova
- Institut Charles Gerhardt Montpellier ICGM UMR-5253 CNRS-UM-ENSCM Ingénierie Moléculaire et Nano-Objets Université de Montpellier site Triolet, Place E. Bataillon 34095 Montpellier Cedex 5 France
| | - Anton V. Cherkasov
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences 603950 Nizhny Novgorod, GSP‐445 Russia
| | - Alexander A. Trifonov
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences 603950 Nizhny Novgorod, GSP‐445 Russia
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences 119991 Moscow, GSP‐1 Russia
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11
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Kalz KF, Hausmann A, Dechert S, Meyer S, John M, Meyer F. Solution Chemistry ofN,N’-Disubstituted Amidines: Identification of Isomers and Evidence for Linear Dimer Formation. Chemistry 2016; 22:18190-18196. [DOI: 10.1002/chem.201603850] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Indexed: 12/13/2022]
Affiliation(s)
- Kai F. Kalz
- Institut für Anorganische Chemie; Georg-August-Universität Göttingen; Tammannstraße 4 37077 Göttingen Germany
| | - Anja Hausmann
- Institut für Anorganische Chemie; Georg-August-Universität Göttingen; Tammannstraße 4 37077 Göttingen Germany
| | - Sebastian Dechert
- Institut für Anorganische Chemie; Georg-August-Universität Göttingen; Tammannstraße 4 37077 Göttingen Germany
| | - Steffen Meyer
- Institut für Anorganische Chemie; Georg-August-Universität Göttingen; Tammannstraße 4 37077 Göttingen Germany
| | - Michael John
- Institut für Anorganische Chemie; Georg-August-Universität Göttingen; Tammannstraße 4 37077 Göttingen Germany
| | - Franc Meyer
- Institut für Anorganische Chemie; Georg-August-Universität Göttingen; Tammannstraße 4 37077 Göttingen Germany
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12
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13
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Sroor FM, Hrib CG, Hilfert L, Edelmann FT. Synthesis and Structural Characterization of an Unusual Heterometallic Europium(III) Amidinate Complex. Z Anorg Allg Chem 2015. [DOI: 10.1002/zaac.201500200] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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14
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Harmgarth N, Gräsing D, Dröse P, Hrib CG, Jones PG, Lorenz V, Hilfert L, Busse S, Edelmann FT. Novel inorganic heterocycles from dimetalated carboranylamidinates. Dalton Trans 2014; 43:5001-13. [PMID: 24202239 DOI: 10.1039/c3dt52751d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mono- and dianionic carboranylamidinates are readily available in one-pot reactions directly from o-carborane (1). In situ-monolithiation of 1 followed by treatment with N,N'-diisopropylcarbodiimide, (i)PrN=C=N(i)Pr, or N,N'-dicyclohexylcarbodiimide, CyN=C=NCy, provided the lithium carboranylamidinates (o-C2B10H10C(NH(i)Pr)(=N(i)Pr)-κ(2)C,N)Li(DME) (2a) and (o-C2B10H10C(NH(i)Cy)(=N(i)Cy)-κ(2)C,N)Li(THF)2 (2b). Controlled hydrolysis of 2a,b afforded the free carboranylamidines o-C2B10H11C(NH(i)R)(=N(i)R) (3a: R = (i)Pr, 3b: R = Cy). The first dimetalated carboranylamidinates, o-C2B10H10C(N(i)Pr)(=N(i)Pr)Li2(DME)2 (4a) (DME = 1,2-dimethoxyethane) and o-C2B10H10C(N(i)Pr)(=N(i)Pr)Li2(THF)4 (4b), were prepared in high yield (83% yield) directly from 1 using a simple one-pot synthetic protocol. Treatment of 4b with 2 equiv. of Me3SiCl afforded the disilylated derivative o-C2B10H10-κ(2)C,N-[C(N(i)PrSiMe3)(=N(i)Pr)]SiMe3 (5). Dianionic 4b also served as an excellent precursor for novel inorganic heterocycles incorporating the closo-1,2-C2B10H10 cage, including the unsymmetrical distannene [o-C2B10H10C(N(i)Pr)(=N(i)Pr)-κ(2)C,N]Sn=Sn[((i)PrN)2C(n)Bu]2 (6) and the azaphosphole derivative [o-C2B10H10C(N(i)Pr)(=N(i)Pr)-κ(2)C,N]PPh (7). Surprisingly, it was found that the synthesis of new inorganic ring systems from dianionic carboranylamidinates can also be achieved by employing only 1 equiv. of n-butyllithium in the generation of the anionic carboranylamidinate intermediates. Using this straightforward one-pot synthetic protocol, the Group 14 metallacycles [o-C2B10H10C(NCy)(=NCy)-κ(2)C,N]SiR2 (R = Cl (8), Me (9), Ph (10)) and [o-C2B10H10C(NCy)([=NCy)-κ(2)C,N]GeCl2 (11) have become accessible. The same synthetic strategy could be successfully adapted to prepare the corresponding Group 4 metallocene derivatives Cp2Ti[o-C2B10H10C(NCy)(=NCy)-κ(2)C,N] (12) and Cp2Zr[o-C2B10H10C(NCy)(=NCy)-κ(2)C,N] (13). The molecular structures of 2b, 3b, 4b, 5, 6, 7, 10, 12, and 13 were confirmed by single-crystal X-ray diffraction.
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Affiliation(s)
- Nicole Harmgarth
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, 39106 Magdeburg, Germany.
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15
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Nevoralová J, Chlupatý T, Padělková Z, Růžička A. Quest for lithium amidinates containing adjacent amino donor group at the central carbon atom. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2013.07.067] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Skvortsov GG, Fukin GK, Ketkov SY, Cherkasov AV, Lyssenko KA, Trifonov AA. Benzonitrile Insertion into Silylarylamides –
ansa
‐Bis(benzamidinate) Ligand Systems with Rigid
o
‐ and
m
‐Phenylene Linkers in the Synthesis of Lithium and Rare Earth Complexes. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300351] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Grigorii G. Skvortsov
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences Tropinina 49, 603950 Nizhny Novgorod, GSP‐445, Russia, Fax: +7‐831‐462‐74‐97, http://www.iomc.ras.ru
| | - Georgy K. Fukin
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences Tropinina 49, 603950 Nizhny Novgorod, GSP‐445, Russia, Fax: +7‐831‐462‐74‐97, http://www.iomc.ras.ru
| | - Sergey Yu. Ketkov
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences Tropinina 49, 603950 Nizhny Novgorod, GSP‐445, Russia, Fax: +7‐831‐462‐74‐97, http://www.iomc.ras.ru
- Nizhny Novgorod State Univeristy, Nizhny Novgorod, Russia
| | - Anton V. Cherkasov
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences Tropinina 49, 603950 Nizhny Novgorod, GSP‐445, Russia, Fax: +7‐831‐462‐74‐97, http://www.iomc.ras.ru
| | - Konstantin A. Lyssenko
- A. N. Nesmeyanov Institute of Elementorganic Compounds of Russian Academy of Sciences, Moscow, Russia
| | - Alexander A. Trifonov
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences Tropinina 49, 603950 Nizhny Novgorod, GSP‐445, Russia, Fax: +7‐831‐462‐74‐97, http://www.iomc.ras.ru
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17
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Moorhouse RS, Moxey GJ, Ortu F, Reade TJ, Lewis W, Blake AJ, Kays DL. Structural Diversity in Alkali Metal Complexes of Sterically Demanding Carbazol-9-yl Ligands. Inorg Chem 2013; 52:2678-83. [DOI: 10.1021/ic302727w] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rhiannon S. Moorhouse
- School of
Chemistry, University of Nottingham, University
Park, Nottingham NG7 2RD, United Kingdom
| | - Graeme J. Moxey
- School of
Chemistry, University of Nottingham, University
Park, Nottingham NG7 2RD, United Kingdom
| | - Fabrizio Ortu
- School of
Chemistry, University of Nottingham, University
Park, Nottingham NG7 2RD, United Kingdom
| | - Thomas J. Reade
- School of
Chemistry, University of Nottingham, University
Park, Nottingham NG7 2RD, United Kingdom
| | - William Lewis
- School of
Chemistry, University of Nottingham, University
Park, Nottingham NG7 2RD, United Kingdom
| | - Alexander J. Blake
- School of
Chemistry, University of Nottingham, University
Park, Nottingham NG7 2RD, United Kingdom
| | - Deborah L. Kays
- School of
Chemistry, University of Nottingham, University
Park, Nottingham NG7 2RD, United Kingdom
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18
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Chlupatý T, Padělková Z, DeProft F, Willem R, Růžička A. Addition of Lappert's Stannylenes to Carbodiimides, Providing a New Class of Tin(II) Guanidinates. Organometallics 2012. [DOI: 10.1021/om201118m] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Tomáš Chlupatý
- Department of General and Inorganic Chemistry, Faculty
of Chemical Technology, University of Pardubice, Studentská 573, CZ-532 10, Pardubice, Czech Republic
| | - Zdeňka Padělková
- Department of General and Inorganic Chemistry, Faculty
of Chemical Technology, University of Pardubice, Studentská 573, CZ-532 10, Pardubice, Czech Republic
| | | | | | - Aleš Růžička
- Department of General and Inorganic Chemistry, Faculty
of Chemical Technology, University of Pardubice, Studentská 573, CZ-532 10, Pardubice, Czech Republic
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19
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Sinenkov M, Kirillov E, Roisnel T, Fukin G, Trifonov A, Carpentier JF. Rare-Earth Complexes with Multidentate Tethered Phenoxy-Amidinate Ligands: Synthesis, Structure, and Activity in Ring-Opening Polymerization of Lactide. Organometallics 2011. [DOI: 10.1021/om200786u] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mikhail Sinenkov
- G.A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, Tropinina 49, GSP-445, 603950 Nizhny Novgorod, Russia
| | - Evgeny Kirillov
- Catalyse et Organométalliques, CNRS - Université de Rennes 1 - Laboratoire Sciences Chimiques de Rennes (UMR 6226), Campus de Beaulieu, 35042 Rennes Cedex, France
| | - Thierry Roisnel
- Catalyse et Organométalliques, CNRS - Université de Rennes 1 - Laboratoire Sciences Chimiques de Rennes (UMR 6226), Campus de Beaulieu, 35042 Rennes Cedex, France
| | - Georgy Fukin
- G.A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, Tropinina 49, GSP-445, 603950 Nizhny Novgorod, Russia
| | - Alexander Trifonov
- G.A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, Tropinina 49, GSP-445, 603950 Nizhny Novgorod, Russia
| | - Jean-François Carpentier
- Catalyse et Organométalliques, CNRS - Université de Rennes 1 - Laboratoire Sciences Chimiques de Rennes (UMR 6226), Campus de Beaulieu, 35042 Rennes Cedex, France
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Chlupatý T, Padělková Z, Lyčka A, Růžička A. Structure and properties of lithium n-butyl amidinates. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2011.02.026] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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21
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Coles MP, Hitchcock PB, Khvostov AV, Lappert MF, Maron L. Synthesis and structures of the [benzamidinato]3− complexes Li3(tmeda)(L1)]2 and [Li(thf)4][Li5(L2)(OEt2)2] [L1 = N(SiMe3)C(Ph)N(SiMe3) and L2 = N(SiMe3)C(C6H4-4)NPh]. Dalton Trans 2011; 40:3047-52. [DOI: 10.1039/c0dt01482f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Aharonovich S, Botoshansky M, Waymouth RM, Eisen MS. Chemoselectivity Diversity in the Reaction of LiNC6F5SiMe3 with Nitriles and the Synthesis, Structure, and Reactivity of Zirconium Mono- and Tris[2-(2-pyridyl)tetrafluorobenzimidazolate] Complexes. Inorg Chem 2010; 49:9217-29. [DOI: 10.1021/ic100696r] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sinai Aharonovich
- Schulich Faculty of Chemistry and Institute of Catalysis Science and Technology, Kyriat Hatechnion, Technion—Israel Institute of Technology, Haifa 32000, Israel
| | - Mark Botoshansky
- Schulich Faculty of Chemistry and Institute of Catalysis Science and Technology, Kyriat Hatechnion, Technion—Israel Institute of Technology, Haifa 32000, Israel
| | - Robert M. Waymouth
- Department of Chemistry, Stanford University, Stanford, California 94305-5080
| | - Moris S. Eisen
- Schulich Faculty of Chemistry and Institute of Catalysis Science and Technology, Kyriat Hatechnion, Technion—Israel Institute of Technology, Haifa 32000, Israel
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Aharonovich S, Botoshanski M, Rabinovich Z, Waymouth RM, Eisen MS. Lithium furyl and pyridyl amidinates as building blocks in coordination polymers, ladder and cage structures. Inorg Chem 2010; 49:1220-9. [PMID: 20039691 DOI: 10.1021/ic902183c] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Lithium N,N'-bis(trimethylsilyl)heterocyclic amidinate complexes with 3- and 4-pyridyl and 3-furyl carbon substituents were prepared by addition of the corresponding nitriles to LiN(SiMe(3))(2) (LiNTMS(2)) solution. In the presence of N,N,N',N' tetramethylethylene diamine (TMEDA), both pyridyl amidinates crystallize as coordination polymers with an amidinate-Li-pyridyl backbone. The 4-pyridyl derivative (7) creates a linear polymer with amidinate-Li-TMEDA units as side chains, whereas the 3-pyridyl polymer (6) has a two-dimensional (2D) network structure in which TMEDA serves as a cross-linker. Solvation of the reaction mixture of 3-furonitrile and LiNTMS(2) with TMEDA affords the monomeric 3-furyl amidinate Li TMEDA complex (3). Crystals of the Li(2)O complex {[3-furyl-C-(NTMS)(2)Li](4).Li(2)O}.C(7)H(8) (4) are obtained from toluene by partial hydrolysis of the unsolvated 3-furyl amidinate (2). Degradation of the polymer (7) to monomeric units can be achieved by solvation in toluene or by reaction with TMS(2)NLi.TMEDA that affords crystals of the complex {NTMS(2)Li.[4-C(5)H(4)N-C(NTMS)(2)Li.TMEDA]}(2).(NTMS(2)Li.TMEDA) (8). The formation of these aggregates can be rationalized by directed substitution of TMEDA with pyridyl moieties and by the laddering principle.
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Affiliation(s)
- Sinai Aharonovich
- Schulich Faculty of Chemistry and Institute of Catalysis Science and Technology, Kyriat Hatechnion, Haifa, 32000, Israel
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Aharonovich S, Botoshansky M, Tumanskii B, Nomura K, Waymouth RM, Eisen MS. Mono- and bis-amidinate 2,6-xylylimido vanadium chlorides: synthesis, structure, and reactivity. Dalton Trans 2010; 39:5643-9. [DOI: 10.1039/b925974k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Schmidt S, Gondzik S, Schulz S, Bläser D, Boese R. Zinc Carbodiimide Cluster Complexes: Synthesis, X-ray Crystal Structures, and Reaction Mechanism. Organometallics 2009. [DOI: 10.1021/om900373p] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sarah Schmidt
- Institute of Inorganic Chemistry, University of Duisburg−Essen, 45117 Essen, Germany
| | - Sebastian Gondzik
- Institute of Inorganic Chemistry, University of Duisburg−Essen, 45117 Essen, Germany
| | - Stephan Schulz
- Institute of Inorganic Chemistry, University of Duisburg−Essen, 45117 Essen, Germany
| | - Dieter Bläser
- Institute of Inorganic Chemistry, University of Duisburg−Essen, 45117 Essen, Germany
| | - Roland Boese
- Institute of Inorganic Chemistry, University of Duisburg−Essen, 45117 Essen, Germany
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Jin G, Jones C, Junk PC, Lippert KA, Rose RP, Stasch A. Synthesis and characterisation of bulky guanidines and phosphaguanidines: precursors for low oxidation state metallacycles. NEW J CHEM 2009. [DOI: 10.1039/b809120j] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Wang J, Sun H, Yao Y, Zhang Y, Shen Q. Bridged bis(amidinate) lanthanide complexes: Synthesis, molecular structure and reactivity. Polyhedron 2008. [DOI: 10.1016/j.poly.2008.03.006] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Aharonovich S, Kapon M, Botoshanski M, Eisen MS. N,N′-Bis-Silylated Lithium Aryl Amidinates: Synthesis, Characterization, and the Gradual Transition of Coordination Mode from σ Toward π Originated by Crystal Packing Interactions. Organometallics 2008. [DOI: 10.1021/om701216p] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sinai Aharonovich
- Schulich Faculty of Chemistry and Institute of Catalysis Science and Technology, Kyriat Hatechnion, Haifa, 32000, Israel
| | - Moshe Kapon
- Schulich Faculty of Chemistry and Institute of Catalysis Science and Technology, Kyriat Hatechnion, Haifa, 32000, Israel
| | - Mark Botoshanski
- Schulich Faculty of Chemistry and Institute of Catalysis Science and Technology, Kyriat Hatechnion, Haifa, 32000, Israel
| | - Moris S. Eisen
- Schulich Faculty of Chemistry and Institute of Catalysis Science and Technology, Kyriat Hatechnion, Haifa, 32000, Israel
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Münch M, Flörke U, Bolte M, Schulz S, Gudat D. Unerwartete C-C-Bindungsknüpfung und Bildung vierkerniger Zinkcarbodiimidcluster durch Reaktion von ZnMe2 mitiPrNCNiPr. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200704417] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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31
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Münch M, Flörke U, Bolte M, Schulz S, Gudat D. Unexpected CC Bond Formation and Synthesis of Tetranuclear Zinc Carbodiimide Clusters from the Reaction of ZnMe2 andiPrNCNiPr. Angew Chem Int Ed Engl 2008; 47:1512-4. [DOI: 10.1002/anie.200704417] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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32
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Nagendran S, Roesky HW. The Chemistry of Aluminum(I), Silicon(II), and Germanium(II). Organometallics 2008. [DOI: 10.1021/om7007869] [Citation(s) in RCA: 390] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Selvarajan Nagendran
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, 37077 Göttingen, Germany
| | - Herbert W. Roesky
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, 37077 Göttingen, Germany
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Edelmann FT. Advances in the Coordination Chemistry of Amidinate and Guanidinate Ligands. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2008. [DOI: 10.1016/s0065-3055(08)00003-8] [Citation(s) in RCA: 364] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Mansfield NE, Grundy J, Coles MP, Avent AG, Hitchcock PB. A Conformational Study of Phospha(III)- and Phospha(V)-guanidine Compounds. J Am Chem Soc 2006; 128:13879-93. [PMID: 17044716 DOI: 10.1021/ja064212t] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Spectroscopic, crystallographic, and computational studies of the substituent distribution about the "NCN" unit in a series of phospha(III)- and phospha(V)-guanidines, R(2)PC{NR'}{NHR'} and R(2)P(E)C{NR'}{NHR'} (R = Ph, Cy; R' = (i)Pr, Cy; E = S, Se), are reported. In the phosphorus(III) systems, the P-diphenyl substituted compounds are observed as only one isomer, shown by NMR spectroscopy to be the E(syn)-(alpha) configuration. In contrast, the corresponding P-dicyclohexyl derivatives exist as a mixture of E(syn)-(alpha) and Z(anti) in solution. Spectroscopic techniques are unable to determine whether the latter isomer exists as the alpha- or beta-conformer relative to rotation about the P-C(amidine)() bond; however, DFT calculations indicate a low-energy structure for the N,N'-dimethyl model complex in the beta-conformation. In their oxidized sulfo and seleno forms, the P-diphenyl compounds are present as an interconverting equilibrium mixture of the E(syn)-(beta) and Z(syn)-(beta) isomers in solution ( approximately 3:2 ratio), whereas for the P-dicyclohexyl analogues, the latter configuration (in which the nitrogen substituents are in a more sterically unfavorably cisoid arrangement about the imine double bond) is the dominant form. Intramolecular E...HN (E = S, Se) interactions are observed in solution for the Z(syn)-(beta) configuration of both P-substituted species, characterized by J(SeH) coupling in the NMR spectrum for the P(V)-seleno compounds and a bathochromic shift of the NH absorption in the infrared spectrum. An X-ray crystallographic analysis of representative Ph(2)P(E)- and Cy(2)P(E)-substituted species shows exclusively the E(syn)-(beta) configuration for the P-diphenyl substituted compounds and the Z(syn)-(beta) form for the P-dicyclohexyl derivatives, independent of the chalcogen and the nitrogen substituents. Results from a DFT analysis of model compounds fail to identify a compelling electronic argument for the observed preferences in substituent orientation, suggesting that steric factors play an important role in determining the subtle energetic differences at work in these systems.
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Coles MP. Application of neutral amidines and guanidines in coordination chemistry. Dalton Trans 2006:985-1001. [PMID: 16474883 DOI: 10.1039/b515490a] [Citation(s) in RCA: 336] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The aim of this perspective is to highlight the continued development and application of amidines and guanidines as neutral, N-based donor ligands in coordination chemistry. From a sporadic interest dating back to the 1980s, work on these two closely related classes of compounds has steadily grown, with examples of evermore sophisticated substitution about the common ligand framework being developed to address specific problems in a number of fields of chemistry. These compounds have shown varied coordination modes at metals from across the periodic table, and examples of their application in a number of catalytic processes are emerging as the field matures.
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Affiliation(s)
- Martyn P Coles
- Department of Chemistry, University of Sussex, Falmer, Brighton, UKBN1 9QJ.
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