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Cabeza JA, García-Álvarez P. Polydentate Amidinato-Silylenes, -Germylenes and -Stannylenes. Chemistry 2024; 30:e202400786. [PMID: 38606572 DOI: 10.1002/chem.202400786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 04/11/2024] [Accepted: 04/12/2024] [Indexed: 04/13/2024]
Abstract
This review article focuses on amidinatotetrylenes that potentially can (or have already shown to) behave as bi- or tridentate ligands because they contain at least one amidinatotetrylene moiety (silylene, germylene or stannylene) and one (or more) additional coordinable fragment(s). Currently, they are being widely used as ligands in coordination chemistry, small molecule activation and catalysis. This review classifies those that have been isolated as transition metal-free compounds into five families that differ in the position(s) of the donor group(s) (D) on the amidinatotetrylene moiety, namely: ED{R1NC(R2)NR1}, EX{DNC(R2)NR1}, EX{R1NC(D)NR1}, EX{DNC(R2)ND} and E{R1NC(R2)ND}2 (E=Si, Ge or Sn). Those that do not exist as transition metal-free compounds but have been observed as ligands in transition metal complexes are cyclometallated and ring-opened amidinatotetrylene ligands. This article presents schematic descriptions of their structures, the approaches used for their syntheses and a quick overview of their involvement (as ligands) in transition metal-catalysed reactions. The literature is covered up to the end of 2023.
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Affiliation(s)
- Javier A Cabeza
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Departamento de Química Orgánica e Inorgánica, Universidad de Oviedo, 33071, Oviedo, Spain
| | - Pablo García-Álvarez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Departamento de Química Orgánica e Inorgánica, Universidad de Oviedo, 33071, Oviedo, Spain
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2
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Cabeza JA, García F, García-Álvarez P, García-Soriano R, Pérez-Carreño E. Synthesis and Some Coordination Chemistry of Phosphane-Difunctionalized Bis(amidinato)-Heavier Tetrylenes: A Previously Unknown Class of PEP Tetrylenes (E = Ge and Sn). Inorg Chem 2023; 62:15502-15509. [PMID: 37696246 PMCID: PMC10523440 DOI: 10.1021/acs.inorgchem.3c01953] [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: 06/14/2023] [Indexed: 09/13/2023]
Abstract
The bis(amidinato)-heavier tetrylenes E(bzamP)2 (E = Ge (2a) and Sn (2b); bzamP = N-isopropyl-N'-(diphenylphosphanylethyl)benzamidinate), which are equipped with one heavier tetrylene (germylene or stannylene) and two phosphane fragments (one on each amidinate moiety) as coordinable groups, have been synthesized from the benzamidinum salt [H2bzamP]Cl and GeCl2(dioxane) or SnCl2 in 2:1 mol ratio. A preliminary inspection of their coordination chemistry has shown that their amidinate group can also be involved in the bonding with the metal atoms as tridentate ENP and tetradentate PENP' coordination modes have been observed for the ECl(bzamP)2 ligand of [Ir{κ3E,N,P-ECl(bzamP)2}(cod)] (E = Ge (3a) and Sn (3b); cod = η4-1,5-cyclooctadiene) and the E(bzamP)2 ligand of [Ni{κ4E,N,P,P'-E(bzamP)2}] (E = Ge (4a) and Sn (4b)), which are products of reactions of 2a and 2b with [IrCl(cod)]2 (1:0.5 mol ratio) and [Ni(cod)2] (1:1 mol ratio), respectively. These products contain a 5-membered NCNEM ring that results from the insertion of the metal M atom into an E-N bond of 2a and 2b. Additionally, while iridium(I) complexes 3a and 3b are chloridotetryl derivatives (insertion of the tetrylene E atom into the Ir-Cl bond has also occurred) that have an uncoordinated phosphane group, nickel(0) complexes 4a and 4b contain a tetrylene fragment that, maintaining the lone pair, behaves as a σ-acceptor (Z-type) ligand.
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Affiliation(s)
- Javier A. Cabeza
- Departamento
de Química Orgánica e Inorgánica, Centro de Innovación
en Química Avanzada ORFEO−CINQA, Universidad de Oviedo, E-33071 Oviedo, Spain
| | - Felipe García
- Departamento
de Química Orgánica e Inorgánica, Centro de Innovación
en Química Avanzada ORFEO−CINQA, Universidad de Oviedo, E-33071 Oviedo, Spain
- School
of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Pablo García-Álvarez
- Departamento
de Química Orgánica e Inorgánica, Centro de Innovación
en Química Avanzada ORFEO−CINQA, Universidad de Oviedo, E-33071 Oviedo, Spain
| | - Rubén García-Soriano
- Departamento
de Química Orgánica e Inorgánica, Centro de Innovación
en Química Avanzada ORFEO−CINQA, Universidad de Oviedo, E-33071 Oviedo, Spain
| | - Enrique Pérez-Carreño
- Departamento
de Química Física y Analítica, Universidad de Oviedo, E-33071 Oviedo, Spain
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3
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Cabeza JA, Fernández‐Colinas JM, García‐Álvarez J, García‐Álvarez P, Laglera‐Gándara CJ, Ramos‐Martín M. Dipyrromethane‐Based PGeP Pincer Germyl Rhodium Complexes. Chemistry 2022; 28:e202200847. [PMID: 35612568 PMCID: PMC9545308 DOI: 10.1002/chem.202200847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Indexed: 11/29/2022]
Abstract
A family of germyl rhodium complexes derived from the PGeP germylene 2,2’‐bis(di‐isopropylphosphanylmethyl)‐5,5’‐dimethyldipyrromethane‐1,1’‐diylgermanium(II), Ge(pyrmPiPr2)2CMe2 (1), has been prepared. Germylene 1 reacted readily with [RhCl(PPh3)3] and [RhCl(cod)(PPh3)] (cod=1,5‐cyclooctadiene) to give, in both cases, the PGeP‐pincer chloridogermyl rhodium(I) derivative [Rh{κ3P,Ge,P‐GeCl(pyrmPiPr2)2CMe2}(PPh3)] (2). Similarly, the reaction of 1 with [RhCl(cod)(MeCN)] afforded [Rh{κ3P,Ge,P‐GeCl(pyrmPiPr2)2CMe2}(MeCN)] (3). The methoxidogermyl and methylgermyl rhodium(I) complexes [Rh{κ3P,Ge,P‐GeR(pyrmPiPr2)2CMe2}(PPh3)] (R=OMe, 4; Me, 5) were prepared by treating complex 2 with LiOMe and LiMe, respectively. Complex 5 readily reacted with CO to give the carbonyl rhodium(I) derivative [Rh{κ3P,Ge,P‐GeR(pyrmPiPr2)2CMe2}(CO)] (6), with HCl, HSnPh3 and Ph2S2 rendering the pentacoordinate methylgermyl rhodium(III) complexes [RhHX{κ3P,Ge,P‐GeMe(pyrmPiPr2)2CMe2}] (X=Cl, 7; SnPh3, 8) and [Rh(SPh)2{κ3P,Ge,P‐GeMe(pyrmPiPr2)2CMe2}] (9), respectively, and with H2 to give the hexacoordinate derivative [RhH2{κ3P,Ge,P‐GeMe(pyrmPiPr2)2CMe2}(PPh3)] (10). Complexes 3 and 5 are catalyst precursors for the hydroboration of styrene, 4‐vinyltoluene and 4‐vinylfluorobenzene with catecholborane under mild conditions.
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Affiliation(s)
- Javier A. Cabeza
- Centro de Innovación en Química Avanzada (ORFEO-CINQA) Departamento de Química Orgánica e Inorgánica Universidad de Oviedo 33071 Oviedo Spain
| | - José M. Fernández‐Colinas
- Centro de Innovación en Química Avanzada (ORFEO-CINQA) Departamento de Química Orgánica e Inorgánica Universidad de Oviedo 33071 Oviedo Spain
| | - Joaquín García‐Álvarez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA) Departamento de Química Orgánica e Inorgánica Universidad de Oviedo 33071 Oviedo Spain
| | - Pablo García‐Álvarez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA) Departamento de Química Orgánica e Inorgánica Universidad de Oviedo 33071 Oviedo Spain
| | - Carlos J. Laglera‐Gándara
- Centro de Innovación en Química Avanzada (ORFEO-CINQA) Departamento de Química Orgánica e Inorgánica Universidad de Oviedo 33071 Oviedo Spain
| | - Marina Ramos‐Martín
- Centro de Innovación en Química Avanzada (ORFEO-CINQA) Departamento de Química Orgánica e Inorgánica Universidad de Oviedo 33071 Oviedo Spain
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4
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Aman M, Dostál L, Růžičková Z, Turek J, Jambor R. Sn,P-Peri-Substituted Naphthalene as a Ligand for Transition Metals. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00293] [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]
Affiliation(s)
- Michal Aman
- Department of General and Inorganic Chemistry, University of Pardubice, 532 10 Pardubice, Czech Republic
| | - Libor Dostál
- Department of General and Inorganic Chemistry, University of Pardubice, 532 10 Pardubice, Czech Republic
| | - Zdeňka Růžičková
- Department of General and Inorganic Chemistry, University of Pardubice, 532 10 Pardubice, Czech Republic
| | - Jan Turek
- Eenheid Algemene Chemie (ALGC), Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium
| | - Roman Jambor
- Department of General and Inorganic Chemistry, University of Pardubice, 532 10 Pardubice, Czech Republic
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5
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Widemann M, Jeggle S, Auer M, Eichele K, Schubert H, Sindlinger CP, Wesemann L. Hydridotetrylene [Ar*EH] (E = Ge, Sn, Pb) coordination at tantalum, tungsten, and zirconium. Chem Sci 2022; 13:3999-4009. [PMID: 35440987 PMCID: PMC8985505 DOI: 10.1039/d2sc00297c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 02/21/2022] [Indexed: 12/19/2022] Open
Abstract
In a reaction of tantalocene trihydride with the low valent aryl tin cation [Ar*Sn(C6H6)][Al(OC{CF3}3)4] (1a) the hydridostannylene complex [Cp2TaH2–Sn(H)Ar*][Al(OC{CF3}3)4] (2) was synthesized. Hydride bridged adducts [Cp2WH2EAr*][Al(OC{CF3}3)4] (E = Sn 3a, Pb 3b) were isolated as products of the reaction between Cp2WH2 and cations [Ar*E(C6H6)][Al(OC{CF3}3)4] (E = Sn 1a, Pb 1b). The tin adduct 3a exhibits a proton migration to give the hydridostannylene complex [Cp2W(H)
Created by potrace 1.16, written by Peter Selinger 2001-2019
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Sn(H)Ar*][Al(OC{CF3}3)4] 4a. The cationic complex 4a is deprotonated at the tin atom in reaction with base MeNHC at 80 °C to give a hydrido-tungstenostannylene [Cp2W(H)SnAr*] 5a. Reprotonation of metallostannylene 5a with acid [H(Et2O)2][BArF] provides an alternative route to hydridotetrylene coordination. Complex 4a adds hydride to give the dihydrostannyl complex [Cp2W(H)–SnH2Ar*] (7). With styrene 4a shows formation of a hydrostannylation product [Cp2W(H)Sn(CH2CH2Ph)Ar*][Al(OC{CF3}3)4] (8). The lead adduct 3b was deprotonated with MeNHC to give plumbylene 5b [Cp2W(H)PbAr*]. Protonation of 5b with [H(Et2O)2][Al(OC{CF3}3)4] at −40 °C followed by low temperature NMR spectroscopy indicates a hydridoplumbylene intermediate [Cp2W(H)Pb(H)Ar*]+ (4b). Hydrido-tungstenotetrylenes of elements Ge (5c), Sn (5a) and Pb (5b) were also synthesized reacting the salt [Cp2W(H)Li]4 with organotetrylene halides. The metallogermylene [Cp2W(H)GeAr*] (5c) shows an isomerization via 1,2-H-migration to give the hydridogermylene [Cp2WGe(H)Ar*] (9), which is accelerated by addition of AIBN. 9 is at rt photochemically transferred back to 5c under light of a mercury vapor lamp. Zirconocene dihydride [Cp2ZrH2]2 reacts with tin cation 1a to give the trinuclear hydridostannylene adduct 10 [({Cp2Zr}2{μ-H})(μ-H)2μ-Sn(H)Ar*][Al(OC{CF3}3)4]. Deprotonation of 10 was carried out using benzyl potassium to give neutral [({Cp2Zr}2{μ-H})(μ-H)μ-Sn(H)Ar*] (11). 11 was also obtained from the reaction of low valent tin hydride [Ar*SnH]2 with two equivalents of [Cp2ZrH2]2. The trihydride Ar*SnH3 reacts with half of an equivalent of [Cp2ZrH2]2 under evolution of hydrogen and formation of a dihydrostannyl complex 13 [Cp2Zr(μ-H)SnH2Ar*]2 and with further equivalents of Ar*SnH3 to give bis(hydridostannylene) complex [Cp2Zr{Sn(H)Ar*}2]. Low valent cations of tin and lead were used to form hydridotetrylene coordination compounds. The mobility of the hydrogen substituent was investigated in deprotonation equilibria as well as in 1,2-H-shift reactions.![]()
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Affiliation(s)
- Max Widemann
- Institut für Anorganische Chemie Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Sebastian Jeggle
- Institut für Anorganische Chemie Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Maximilian Auer
- Institut für Anorganische Chemie Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Klaus Eichele
- Institut für Anorganische Chemie Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Hartmut Schubert
- Institut für Anorganische Chemie Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Christian P Sindlinger
- Institut für Anorganische Chemie, RWTH Aachen University Landoltweg 1a D-52074 Aachen Germany
| | - Lars Wesemann
- Institut für Anorganische Chemie Auf der Morgenstelle 18 72076 Tübingen Germany
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6
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Ruppert H, Greb L. Calix[4]pyrrolato Stannate(II): A Tetraamido Tin(II) Dianion and Strong Metal‐Centered σ‐Donor. Angew Chem Int Ed Engl 2022; 61:e202116615. [PMID: 35019214 PMCID: PMC9306640 DOI: 10.1002/anie.202116615] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Indexed: 01/07/2023]
Abstract
Anionic, metal‐centered nucleophiles are emerging compounds with unique reactivities. Here, we describe the isolation and full characterization of the first tetraamido tin(II) dianion, its behavior as ligand towards transition metals, and its reactivity as a tin‐centered nucleophile. Experimental values such as the Tolman electronic parameter (TEP) and computations attest tin‐located σ‐donor ability exceeding that of carbenes or electron‐rich phosphines. Against transition metals, the stannate(II) can act as η1‐ or η5‐type ligand. With aldehydes, it reacts by hydride substitution to give valuable acyl stannates. The reductive dehalogenation of iodobenzene indicates facile redox pathways mediated by halogen bond interaction. Calix[4]pyrrolato stannate(II) represents the first example of this macrocyclic ligand in low‐valent p‐block element chemistry.
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Affiliation(s)
- Heiko Ruppert
- Anorganisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Lutz Greb
- Department of Chemistry and Biochemistry - Inorganic Chemistry Freie Universität Berlin Fabeckstr. 34/36 14195 Berlin Germany
- Anorganisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
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7
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Ruppert H, Greb L. Calix[4]pyrrolato Stannate(II): A Tetraamido Tin(II) Dianion and Strong Metal‐Centered σ‐Donor. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Heiko Ruppert
- Ruprecht Karls Universität Heidelberg: Ruprecht Karls Universitat Heidelberg Anorganisch-Chemisches Institut GERMANY
| | - Lutz Greb
- Freie Universitat Berlin Institut für Chemie und Biochemie, Anorganische Chemie Institut für Anorganische ChemieFabeckstr. 34-36 14195 Berlin GERMANY
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8
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Buil ML, Cabeza JA, Esteruelas MA, Izquierdo S, Laglera-Gándara CJ, Nicasio AI, Oñate E. Alternative Conceptual Approach to the Design of Bifunctional Catalysts: An Osmium Germylene System for the Dehydrogenation of Formic Acid. Inorg Chem 2021; 60:16860-16870. [PMID: 34657436 PMCID: PMC8564761 DOI: 10.1021/acs.inorgchem.1c02893] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
![]()
The reaction of the hexahydride OsH6(PiPr3)2 with a P,Ge,P-germylene-diphosphine
affords
an osmium tetrahydride derivative bearing a Ge,P-chelate, which arises
from the hydrogenolysis of a P–C(sp3) bond. This
Os(IV)–Ge(II) compound is a pioneering example of a bifunctional
catalyst based on the coordination of a σ-donor acid, which
is active in the dehydrogenation of formic acid to H2 and CO2. The kinetics
of the dehydrogenation, the characterization of the resting state
of the catalysis, and DFT calculations point out that the hydrogen
formation (the fast stage) exclusively occurs on the coordination
sphere of the basic metal center, whereas both the metal center and
the σ-donor Lewis acid cooperatively participate in the CO2 release (the rate-determining step). During the process,
the formate group pivots around the germanium to approach its hydrogen
atom to the osmium center, which allows its transfer to the metal
and the CO2 release. An alternative
class of bifunctional catalysts can be assembled
by coordination of σ-donor Lewis acids to platinum-group-metal
basic fragments. In contrast to what happens with the previously reported
bifunctional catalysts, this design allows enhancing the basicity
of the base and the acidity of the acid. According to this, a bifunctional
catalyst for the dehydrogenation of formic acid, based on an osmium(IV)-germylene
cooperative system, has been prepared and the mechanism of the catalysis
established.
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Affiliation(s)
- María L Buil
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Javier A Cabeza
- Departamento de Química Orgánica e Inorgánica, Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Oviedo, 33071 Oviedo, Spain
| | - Miguel A Esteruelas
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Susana Izquierdo
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Carlos J Laglera-Gándara
- Departamento de Química Orgánica e Inorgánica, Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Oviedo, 33071 Oviedo, Spain
| | - Antonio I Nicasio
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Enrique Oñate
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
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9
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Zabalov MV, Syroeshkin MA, Mankaev BN, Timofeev SV, Egorov MP, Karlov SS. Search for tetrylene structures that can exhibit catalytic activity: a quantum chemical approach. Russ Chem Bull 2021. [DOI: 10.1007/s11172-021-3186-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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10
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Cabeza JA, García‐Álvarez P. Cyclometallation of Heavier Tetrylenes: Reported Complexes and Applications in Catalysis. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100430] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Javier A. Cabeza
- Centro de Innovación en Química Avanzada (ORFEO-CINQA network) Departamento de Química Orgánica e Inorgánica Universidad de Oviedo 33071 Oviedo Spain
| | - Pablo García‐Álvarez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA network) Departamento de Química Orgánica e Inorgánica Universidad de Oviedo 33071 Oviedo Spain
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11
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Chibde P, Raut RK, Kumar V, Deb R, Gonnade R, Majumdar M. Intramolecularly Double-Donor-Stabilized Stannylene and Its Coordination towards Ag(I) and Au(I) Centers. Chem Asian J 2021; 16:2118-2125. [PMID: 34137196 DOI: 10.1002/asia.202100523] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 06/13/2021] [Indexed: 11/08/2022]
Abstract
The intramolecularly double-donor-stabilized stannylene 1 has been synthesized from the salt-metathesis reaction between two equivalents of lithium pyridine ene-amide L1 and SnCl2 . Compound 1 exhibits dipolar behavior when reacted with B(C6 F5 )3 leading to the zwitterionic compound 2. The reaction of 1 with one equivalent and 0.5 equivalent of AgOTf (OTf=trifluoromethane sulfonate) result in the formation of a stannylene-AgOTf complex 3 and a homoleptic distannylene-silver ionic complex 4, respectively. Analogous to complex 4, the gold(I) complex 5 has been synthesized from the reaction between two equivalents of 1 and 0.5 equivalent of AuCl.SMe2 /Me3 SiOTf. Complex 5 is the first example of homoleptic stannylene-Au(I) ionic complex among the very scarce reports on stannylene-gold(I) coordination complexes. All compounds have been structurally characterized using single crystal X-ray crystallography. Solution-state characterization have been performed using multinuclear NMR techniques. Detailed DFT calculations on the optimized geometries 1 o, 3 o-5 o reveal the change in sp- hybridization on the pyramidal Sn(II) center upon metal coordination and their bonding overlaps.
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Affiliation(s)
- Purva Chibde
- Indian Institute of Science Education and Research, Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | - Ravindra K Raut
- Indian Institute of Science Education and Research, Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | - Vikas Kumar
- Indian Institute of Science Education and Research, Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | - Rahul Deb
- Indian Institute of Science Education and Research, Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | - Rajesh Gonnade
- Centre for Material Characterization, CSIR-National Chemical Laboratory Pashan, Pune, 411008, Maharashtra, India
| | - Moumita Majumdar
- Indian Institute of Science Education and Research, Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
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12
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Zechovský J, Mrózek O, Samsonov M, Jambor R, RůŽička A, Dostál L. Coordination capabilities of bis-(2-pyridyl)amides in the field of divalent germanium, tin and lead compounds. Dalton Trans 2021; 50:6321-6332. [PMID: 33885114 DOI: 10.1039/d1dt00717c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reactivity of two lithium amides derived from bis-(2-pyridyl)amine (dpa)H or its methyl-substituted congener bis-(6-methyl-2-pyridyl)amine (Me-dpa)H, i.e. (dpa)Li (1) and (Me-dpa)Li (2), toward ECl2 (where E = Ge (dioxane complex) and Sn) is reported. This study produced both heteroleptic complexes (dpa)GeCl (3), [(dpa)SnCl]2 (4), and (Me-dpa)GeCl (5) and homoleptic complexes (dpa)2E (E = Ge (6) or Sn (7)) and (Me-dpa)2E (E = Ge (8) or Sn (9)). The structures of all complexes were established by single-crystal X-ray diffraction analysis showing significant differences depending on the E atom and ligand used. By contrast, in solution, the majority of compounds showed a fluxional behaviour as demonstrated by the NMR study. Finally, it turned out that the Me-dpa ligand, unlike dpa, is able to form ate complexes [(Me-dpa)3E]Li (E = Ge (10), Sn (11) or Pb (12)), whose structures were determined by single-crystal X-ray diffraction analysis. This study revealed the formation of two isomers for Ge and Sn complexes depending on the coordination preference of the lithium atom being coordinated either by nitrogen donors (10-12) or solely by the Ge or Sn electron lone pair (10a and 11a). Furthermore, the NMR experiments proved that the germanium complex 10 exhibits only limited stability in solution and decomposes to germylene 8 and lithium amide 2.
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Affiliation(s)
- Jan Zechovský
- Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, CZ-532 10 Pardubice, Czech Republic.
| | - Ondřej Mrózek
- Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, CZ-532 10 Pardubice, Czech Republic. and Faculty of Chemistry and Chemical Biology, TU Dortmund University, 44227 Dortmund, Germany
| | - Maksim Samsonov
- Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, CZ-532 10 Pardubice, Czech Republic.
| | - Roman Jambor
- 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.
| | - Libor Dostál
- 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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13
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Ouellette ET, Carpentier A, Joseph Brackbill I, Lohrey TD, Douair I, Maron L, Bergman RG, Arnold J. σ or π? Bonding interactions in a series of rhenium metallotetrylenes. Dalton Trans 2021; 50:2083-2092. [PMID: 33481968 DOI: 10.1039/d1dt00129a] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Salt metathesis reactions between a low-valent rhenium(i) complex, Na[Re(η5-Cp)(BDI)] (BDI = N,N'-bis(2,6-diisopropylphenyl)-3,5-dimethyl-β-diketiminate), and a series of amidinate-supported tetrylenes of the form ECl[PhC(NtBu)2] (E = Si, Ge, Sn) led to rhenium metallotetrylenes Re(E[PhC(NtBu)2])(η5-Cp)(BDI) (E = Si (1a), Ge (2), Sn (4)) with varying extents of Re-E multiple bonding. Whereas the rhenium-stannylene 4 adopts a σ-metallotetrylene arrangement featuring a Re-E single bond, the rhenium-silylene (1a) and -germylene (2) both engage in π-interactions to form short Re-E multiple bonds. Temperature was found to play a crucial role in reactions between Na[Re(η5-Cp)(BDI)] and SiCl[PhC(NtBu)2], as manipulation of reaction conditions led to isolation of an unusual rhenium-silane, (BDI)Re(μ-η5:η1-C5H4)(SiH[PhC(NtBu)2]) (1b) and a dinitrogen bridged rhenium-silylene, (η5-Cp)(BDI)Re(μ-N2)Si[PhC(NtBu)2] (1c), in addition to 1a. Finally, the reaction of Na[Re(η5-Cp)(BDI)] with GeCl2·dioxane led to a rare μ2-tetrelido complex, μ2-Ge[Re(η5-Cp)(BDI)]2 (3). Bonding interactions within these complexes are discussed through the lens of various spectroscopic, structural, and computational investigations.
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Affiliation(s)
- Erik T Ouellette
- Department of Chemistry, University of California, Berkeley, California 94720, USA and Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
| | - Ambre Carpentier
- LPCNO, Université de Toulouse, INAS Toulouse, 135 Avenue de Rangueil, 31077, Toulouse, France
| | - I Joseph Brackbill
- Department of Chemistry, University of California, Berkeley, California 94720, USA and Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
| | - Trevor D Lohrey
- Department of Chemistry, University of California, Berkeley, California 94720, USA and Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
| | - Iskander Douair
- LPCNO, Université de Toulouse, INAS Toulouse, 135 Avenue de Rangueil, 31077, Toulouse, France
| | - Laurent Maron
- LPCNO, Université de Toulouse, INAS Toulouse, 135 Avenue de Rangueil, 31077, Toulouse, France
| | - Robert G Bergman
- Department of Chemistry, University of California, Berkeley, California 94720, USA
| | - John Arnold
- Department of Chemistry, University of California, Berkeley, California 94720, USA and Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
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14
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Leong BX, Teo YC, Condamines C, Yang MC, Su MD, So CW. A NHC-Silyliumylidene Cation for Catalytic N-Formylation of Amines Using Carbon Dioxide. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03795] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bi-Xiang Leong
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
| | - Yeow-Chuan Teo
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
| | - Cloé Condamines
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
| | - Ming-Chung Yang
- Department of Applied Chemistry, National Chiayi University, Chiayi 60004, Taiwan
| | - Ming-Der Su
- Department of Applied Chemistry, National Chiayi University, Chiayi 60004, Taiwan
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Cheuk-Wai So
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
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15
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Xiao-Lin Zhang, Zhang MX, Yan BF, Li WZ. A Spiro-Ge-Heterocyclic Compound Formation via Germylenoid and Formaldehyde: A Theoretical Study. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2020. [DOI: 10.1134/s0036024420100349] [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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16
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Cabeza JA, García-Álvarez P, Laglera-Gándara CJ, Pérez-Carreño E. Phosphane-functionalized heavier tetrylenes: synthesis of silylene- and germylene-decorated phosphanes and their reactions with Group 10 metal complexes. Dalton Trans 2020; 49:8331-8339. [PMID: 32515774 DOI: 10.1039/d0dt01727b] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The stable phosphane-functionalized heavier tetrylenes E(tBu2bzam)pyrmPtBu2 (E = Si (1Si), Ge (1Ge); tBu2bzam = N,N'-ditertbutylbenzamidinate; HpyrmPtBu2 = ditertbutyl(2-pyrrolylmethyl)phosphane) have been prepared by reacting the amidinatotetrylenes E(tBu2bzam)Cl (E = Si, Ge) with LipyrmPtBu2. The reactions of 1Si and 1Ge with selected M0 and MII (M = Ni, Pd, Pt) metal precursors have allowed the synthesis of square-planar [MCl2{κ2E,P-E(tBu2bzam)pyrmPtBu2}] (M = Ni, Pd, Pt; E = Si, Ge), tetrahedral [Ni{κ2E,P-E(tBu2bzam)pyrmPtBu2}(cod)] (E = Si, Ge; cod = 1,5-cyclooctadiene) and triangular [M{κ2E,P-E(tBu2bzam)pyrmPtBu2}(PPh3)] (M = Pd, Pt; E = Si, Ge) complexes, showing that 1Si and 1Ge are excellent Si,P- and Ge,P-chelating ligands that, due to their large steric bulk, are able to stabilize three-coordinate Pd0 and Pt0 complexes.
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Affiliation(s)
- Javier A Cabeza
- Centro de Innovación en Química Avanzada (ORFEO-CINQA) and Departamento de Química Orgánica e Inorgánica, Universidad de Oviedo, 33071 Oviedo, Spain.
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17
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Ayoubi‐Chianeh M, Kassaee MZ. New monodentate and bidentate silylene ligands by
DFT. J CHIN CHEM SOC-TAIP 2020. [DOI: 10.1002/jccs.202000113] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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18
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Cabeza JA, Fernández-Colinas JM, García-Álvarez P, González-Álvarez L, Pérez-Carreño E. Reactivity of Amidinatosilylenes and Amidinatogermylenes with [PtMe 2(η 4-cod)]: cis- versus trans-[PtMe 2L 2] Complexes and Cyclometalation Reactions. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00188] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Javier A. Cabeza
- Centro de Innovación en Química Avanzada (ORFEO−CINQA network), Departamento de Química Orgánica e Inorgánica, Universidad de Oviedo, 33071 Oviedo, Spain
| | - José M. Fernández-Colinas
- Centro de Innovación en Química Avanzada (ORFEO−CINQA network), Departamento de Química Orgánica e Inorgánica, Universidad de Oviedo, 33071 Oviedo, Spain
| | - Pablo García-Álvarez
- Centro de Innovación en Química Avanzada (ORFEO−CINQA network), Departamento de Química Orgánica e Inorgánica, Universidad de Oviedo, 33071 Oviedo, Spain
| | - Laura González-Álvarez
- Centro de Innovación en Química Avanzada (ORFEO−CINQA network), Departamento de Química Orgánica e Inorgánica, Universidad de Oviedo, 33071 Oviedo, Spain
| | - Enrique Pérez-Carreño
- Departamento de Química Física y Analítica, Universidad de Oviedo, 33071 Oviedo, Spain
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19
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Cabeza JA, García-Álvarez P, Laglera-Gándara CJ. The Transition Metal Chemistry of PGeP and PSnP Pincer Heavier Tetrylenes. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.201901248] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Javier A. Cabeza
- Centro de Innovación en Química Avanzada (ORFEO-CINQA network); Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; 33071 Oviedo Spain
| | - Pablo García-Álvarez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA network); Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; 33071 Oviedo Spain
| | - Carlos J. Laglera-Gándara
- Centro de Innovación en Química Avanzada (ORFEO-CINQA network); Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; 33071 Oviedo Spain
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20
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Feng Z, Jiang Y, Ruan H, Zhao Y, Tan G, Zhang L, Wang X. A diamidinatogermylene as a Z-type ligand in a nickel(0) complex. Dalton Trans 2019; 48:14975-14978. [PMID: 31576866 DOI: 10.1039/c9dt03803e] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The reaction of the phosphine functionalized chlorogermylene 1 with Ni(COD)2 (COD = 1,5-cyclooctadiene) afforded the bis-chlorogermylene ligated nickel(0) complex 2 in high yield. The dechlorination reaction of 2 with elemental potassium serendipitously yielded the diamidinatogermylene nickel(0) complex 3. Single-crystal X-ray diffraction analysis reveals that the germanium center in 3 features a pyramidalized geometry, suggesting the germylene moiety in 3 acts as a Z-type ligand, which is further supported by theoretical calculations. Complex 3 represents the first example bearing a Z-type diaminogermylene ligand.
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Affiliation(s)
- Zhongtao Feng
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China.
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21
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Tetrylenes based on tri- and tetradentate ONO-, NNO-, NNN-, and ONNO-type ligands: synthesis, structure, and reactivity. Russ Chem Bull 2019. [DOI: 10.1007/s11172-019-2532-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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22
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Cabeza JA, García‐Álvarez P, Gómez‐Gallego M, González‐Álvarez L, Merinero AD, Sierra MA. Two Types of σ‐Allenyl Complexes from Reactions of Silylenes and Germylenes with Chromium Fischer Alkynyl(alkoxy)carbenes. Chemistry 2019; 25:8635-8642. [DOI: 10.1002/chem.201901579] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Indexed: 12/20/2022]
Affiliation(s)
- Javier A. Cabeza
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)Departamento de Química Orgánica e InorgánicaUniversidad de Oviedo 33071 Oviedo Spain
| | - Pablo García‐Álvarez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)Departamento de Química Orgánica e InorgánicaUniversidad de Oviedo 33071 Oviedo Spain
| | - Mar Gómez‐Gallego
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)Departamento de Química OrgánicaUniversidad Complutense 28040 Madrid Spain
| | - Laura González‐Álvarez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)Departamento de Química Orgánica e InorgánicaUniversidad de Oviedo 33071 Oviedo Spain
| | - Alba D. Merinero
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)Departamento de Química OrgánicaUniversidad Complutense 28040 Madrid Spain
| | - Miguel A. Sierra
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)Departamento de Química OrgánicaUniversidad Complutense 28040 Madrid Spain
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23
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Synthesis and reactivity of monomeric stannylene supported by the new tetradentate O,N,N,N-chelating ligand. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.03.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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24
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25
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Sinhababu S, Sharma MK, Mahawar P, Kaur S, Singh VK, Paliwal A, Yadav D, Kashyap HK, Nagendran S. Germylene stabilized group 12 metal complexes and their reactivity with chalcogens. Dalton Trans 2019; 48:16366-16376. [DOI: 10.1039/c8dt04589e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This manuscript reports the first examples of germylene stabilized cadmium complexes 3, 6, and 7, and novel germylene zinc complexes 2 and 5.
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Affiliation(s)
- Soumen Sinhababu
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi 110 016
- India
| | | | - Pritam Mahawar
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi 110 016
- India
| | - Supreet Kaur
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi 110 016
- India
| | - Vivek Kumar Singh
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi 110 016
- India
| | - Akhil Paliwal
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi 110 016
- India
| | - Dhirendra Yadav
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi 110 016
- India
| | - Hemant K. Kashyap
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi 110 016
- India
| | - Selvarajan Nagendran
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi 110 016
- India
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26
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Hidalgo N, Bajo S, Moreno JJ, Navarro-Gilabert C, Mercado BQ, Campos J. Reactivity of a gold(i)/platinum(0) frustrated Lewis pair with germanium and tin dihalides. Dalton Trans 2019; 48:9127-9138. [DOI: 10.1039/c9dt00702d] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The rich reactivity of tetrylene dihalides towards a metallic FLP: phosphine exchange reactions and formation of homo and heterobimetallic compounds.
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Affiliation(s)
- Nereida Hidalgo
- Instituto de Investigaciones Químicas (IIQ)
- Departamento de Química Inorgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA). Universidad de Sevilla and Consejo Superior de Investigaciones Científicas (CSIC)
- 41092 Sevilla
- Spain
| | - Sonia Bajo
- Instituto de Investigaciones Químicas (IIQ)
- Departamento de Química Inorgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA). Universidad de Sevilla and Consejo Superior de Investigaciones Científicas (CSIC)
- 41092 Sevilla
- Spain
| | - Juan José Moreno
- Instituto de Investigaciones Químicas (IIQ)
- Departamento de Química Inorgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA). Universidad de Sevilla and Consejo Superior de Investigaciones Científicas (CSIC)
- 41092 Sevilla
- Spain
| | - Carlos Navarro-Gilabert
- Instituto de Investigaciones Químicas (IIQ)
- Departamento de Química Inorgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA). Universidad de Sevilla and Consejo Superior de Investigaciones Científicas (CSIC)
- 41092 Sevilla
- Spain
| | | | - Jesús Campos
- Instituto de Investigaciones Químicas (IIQ)
- Departamento de Química Inorgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA). Universidad de Sevilla and Consejo Superior de Investigaciones Científicas (CSIC)
- 41092 Sevilla
- Spain
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27
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Dübek G, Franz D, Eisenhut C, Altmann PJ, Inoue S. Reactivity of an NHC-stabilized pyramidal hydrosilylene with electrophilic boron sources. Dalton Trans 2019; 48:5756-5765. [DOI: 10.1039/c9dt00608g] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An NHC-stabilized three-coordinate hydrosilylene dehydrogenates ammonia borane and forms more stable complexes with BH3, BPh3, BBr3 and BPhBr2 but less stable ones with BF3, and BCl3 for which ligand scrambling occurs.
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Affiliation(s)
- Gizem Dübek
- Department of Chemistry
- WACKER-Institute of Silicon Chemistry and Catalysis Research Centre
- Technische Universität München
- 85748 Garching bei München
- Germany
| | - Daniel Franz
- Department of Chemistry
- WACKER-Institute of Silicon Chemistry and Catalysis Research Centre
- Technische Universität München
- 85748 Garching bei München
- Germany
| | - Carsten Eisenhut
- Institut für Chemie
- Technische Universität Berlin
- 10623 Berlin
- Germany
| | - Philipp J. Altmann
- Department of Chemistry
- WACKER-Institute of Silicon Chemistry and Catalysis Research Centre
- Technische Universität München
- 85748 Garching bei München
- Germany
| | - Shigeyoshi Inoue
- Department of Chemistry
- WACKER-Institute of Silicon Chemistry and Catalysis Research Centre
- Technische Universität München
- 85748 Garching bei München
- Germany
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28
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Cabeza JA, Fernández-Colinas JM, García-Álvarez P, González-Álvarez L, Pérez-Carreño E. Mesityl(amidinato)tetrylenes as ligands in iridium(i) and iridium(iii) complexes: silicon versus germanium and simple κ1-coordination versus cyclometallation. Dalton Trans 2019; 48:10996-11003. [DOI: 10.1039/c9dt01853k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reactivity of the germylene Ge(tBu2bzam)Mes with [Ir2(μ-Cl)2(η4-cod)2] and [Ir2Cl2(μ-Cl)2(η5-Cp*)2] differs considerably from that previously communicated for the isostructural silylene Si(tBu2bzam)Mes.
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Affiliation(s)
- Javier A. Cabeza
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Departamento de Química Orgánica e Inorgánica
- Universidad de Oviedo
- 33071 Oviedo
- Spain
| | - José M. Fernández-Colinas
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Departamento de Química Orgánica e Inorgánica
- Universidad de Oviedo
- 33071 Oviedo
- Spain
| | - Pablo García-Álvarez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Departamento de Química Orgánica e Inorgánica
- Universidad de Oviedo
- 33071 Oviedo
- Spain
| | - Laura González-Álvarez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Departamento de Química Orgánica e Inorgánica
- Universidad de Oviedo
- 33071 Oviedo
- Spain
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29
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Álvarez-Rodríguez L, Cabeza JA, García-Álvarez P, Gómez-Gallego M, González-Álvarez L, Merinero AD, Sierra MA. Reversible Carbene Insertion into a Ge−N Bond and Insights into CO and Carbene Substitution Reactions Involving Amidinatogermylenes and Fischer Carbene Complexes. Chemistry 2018; 25:1588-1594. [DOI: 10.1002/chem.201805406] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Lucía Álvarez-Rodríguez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; 33071 Oviedo Spain
| | - Javier A. Cabeza
- Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; 33071 Oviedo Spain
| | - Pablo García-Álvarez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; 33071 Oviedo Spain
| | - Mar Gómez-Gallego
- Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica; Universidad Complutense; 28040 Madrid Spain
| | - Laura González-Álvarez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; 33071 Oviedo Spain
| | - Alba D. Merinero
- Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica; Universidad Complutense; 28040 Madrid Spain
| | - Miguel A. Sierra
- Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica; Universidad Complutense; 28040 Madrid Spain
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30
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Bakthavachalam K, Dutta S, C A, Raghavendra B, Haridas A, Sen SS, Koley D, Ghosh S. Cyclometallation of a germylene ligand by concerted metalation-deprotonation of a methyl group. Dalton Trans 2018; 47:15835-15844. [PMID: 30358780 DOI: 10.1039/c8dt03166e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The reaction of [CH{(CMe)(2,6-iPr2C6H3N)}2]GeCl with LiN(SiMe3)2 was previously reported, which led to the formation of a hetero-fulvene type germylene, [CH{(CMe)(C[double bond, length as m-dash]CH2)(2,6-iPr2C6H3N)}2]Ge through the deprotonation of the C-H bond from the methyl substituents. In this paper, we attempted the analogous reaction with (Dipp)NCMeCHCOMeGeCl using LiN(SiMe3)2 which gave rise to a metathesis product, (Dipp)NCMeCHCOMeGeN(SiMe3)2 (2). However, the reactions of 2 with [M2Cl2(μ-Cl)2(η5-Cp*)2] (M = Rh and Ir) resulted in cyclometallated Rh and Ir complexes through the activation of the C-H bond from the germylene ligand. The complexes were characterized by single crystal X-ray analysis, which authenticated the presence of Ge-Rh and Ge-Ir bonds. DFT studies have been performed to understand the mechanism.
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Affiliation(s)
- K Bakthavachalam
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
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31
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Wiesemann M, Hoge B. Pentafluoroethylated Compounds of Silicon, Germanium and Tin. Chemistry 2018; 24:16457-16471. [PMID: 29722451 DOI: 10.1002/chem.201801292] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 04/24/2018] [Indexed: 11/09/2022]
Abstract
In this contribution we present an account on pentafluoroethylated compounds of silicon, germanium and tin. The pronounced electron-withdrawing effect of the pentafluoroethyl group leads to a markedly increased Lewis acidity at the central atom which results in the stabilization of hypervalent complexes, anionic element(II) species as well as remarkable reactivities of element-element and element-hydrogen bonds. By addition to unsaturated C-C bonds or by reaction with organic halides as well as transition-metal complexes the molecules bearing a pentafluoroethyl-element group are readily accessible. Moreover, the utilization of pentafluoroethyl groups facilitates the formation of donor-stabilized germylenes and stannylenes. A series of such compounds serves as suitable pentafluoroethylation reagents. Conversely to the well-studied trifluoromethyl derivatives these compounds frequently exhibit a higher thermostability, which allows a more convenient handling.
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Affiliation(s)
- Markus Wiesemann
- Centrum für Molekulare Materialien, Fakultät für Chemie, Universität Bielefeld, Universitätsstraße 25, 33615, Bielefeld, Germany
| | - Berthold Hoge
- Centrum für Molekulare Materialien, Fakultät für Chemie, Universität Bielefeld, Universitätsstraße 25, 33615, Bielefeld, Germany
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32
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Duffy IR, Leigh WJ. Fast kinetics studies of the Lewis acid-base complexation of transient stannylenes with σ- and π-donors in solution. Phys Chem Chem Phys 2018; 20:20555-20570. [PMID: 30052251 DOI: 10.1039/c8cp03580f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Lewis acid-base complexation chemistry of dimethyl- and diphenylstannylene (SnMe2 and SnPh2, respectively) in hexanes solution has been studied by laser photolysis methods. Complexation of the two stannylenes with a series of nine O-, S-, and N-donors (including cyclic and acyclic dialkyl ethers and sulfides, a primary, secondary, and tertiary amine, ethyl acetate and acetone), two alkenes, and an alkyne proceeds rapidly and reversibly to generate the corresponding stannylene-donor Lewis pairs, which have been detected in each case by time-resolved UV-vis absorption spectroscopy. The complexes exhibit UV-vis absorption maxima in the range of λmax ∼ 310-405 nm depending on the donor and substitution at tin. Bimolecular rate constants for complexation (kC), which could be determined for 14 of the 24 Lewis pairs that were studied, were found to fall within a factor of four of the diffusional limit in all cases, with SnMe2 showing consistently higher reactivity than SnPh2. Equilibrium constants for complexation (KC) could be measured for all but one of the stannylene-π- and O-donor pairs, the values corresponding to (gas phase) binding free energies in the range of +1.1 to -3.9 kcal mol-1. Comparison of the experimental equilibrium constants for complexation of SnMe2 and SnPh2 with methanol and diethyl ether to those measured previously for the homologous silylenes and germylenes indicates that Lewis acidity decreases in the order SiR2 > SnR2 > GeR2 for both the dimethyl- and diphenyltetrylene series, the diphenyl derivatives exhibiting significantly stronger Lewis acidity in all three cases. The experimental trends in the binding energies and UV-vis spectra of the complexes are reproduced well by density functional theory (DFT) calculations, which have been carried out at the (TD)ωB97XD/def2-TZVP level of theory. The experimental data also show evidence of a reaction between tetramethyldistannene (Me2Sn[double bond, length as m-dash]SnMe2, 4a) and amine donors, which is suggested to afford the corresponding amine-stabilized stannylidenestannylene structure. The mechanistic proposal is supported by DFT calculations of the complexation of 4a and SnMe2 with model O-, S- and N-donors.
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Affiliation(s)
- Ian R Duffy
- Department of Chemistry & Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON, Canada L8S 4M1.
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33
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Seow C, Ismail MLB, Xi HW, Li Y, Lim KH, So CW. A Bis(germyliumylidene)silver(I) Complex Dication. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00044] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Celestine Seow
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
| | - Muhammad Luthfi Bin Ismail
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
| | - Hong-Wei Xi
- Singapore Institute of Technology, 10 Dover Drive, Singapore 138683
| | - Yongxin Li
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
| | - Kok Hwa Lim
- Singapore Institute of Technology, 10 Dover Drive, Singapore 138683
| | - Cheuk-Wai So
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
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34
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Brugos J, Cabeza JA, García-Álvarez P, Pérez-Carreño E. From a PGeP Pincer-Type Germylene to Metal Complexes Featuring Chelating (Ir) and Tripodal (Ir) PGeP Germyl and Bridging (Mn2) and Chelating (Ru) PGeP Germylene Ligands. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00171] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Javier Brugos
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Departamento de Química Orgánica e Inorgánica, Universidad de Oviedo, 33071 Oviedo, Spain
| | - Javier A. Cabeza
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Departamento de Química Orgánica e Inorgánica, Universidad de Oviedo, 33071 Oviedo, Spain
| | - Pablo García-Álvarez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Departamento de Química Orgánica e Inorgánica, Universidad de Oviedo, 33071 Oviedo, Spain
| | - Enrique Pérez-Carreño
- Departamento de Química Física y Analítica, Universidad de Oviedo, 33071 Oviedo, Spain
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35
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Khoo S, Shan YL, Yang MC, Li Y, Su MD, So CW. B–H Bond Activation by an Amidinate-Stabilized Amidosilylene: Non-Innocent Amidinate Ligand. Inorg Chem 2018; 57:5879-5887. [DOI: 10.1021/acs.inorgchem.8b00321] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Sabrina Khoo
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
| | - Yu-Liang Shan
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
| | - Ming-Chung Yang
- Department of Applied Chemistry, National Chiayi University, Chiayi 60004, Taiwan
| | - Yongxin Li
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
| | - Ming-Der Su
- Department of Applied Chemistry, National Chiayi University, Chiayi 60004, Taiwan
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Cheuk-Wai So
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
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36
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Krebs KM, Freitag S, Maudrich JJ, Schubert H, Sirsch P, Wesemann L. Coordination chemistry of stannylene-based Lewis pairs – insertion into M–Cl and M–C bonds. From base stabilized stannylenes to bidentate ligands. Dalton Trans 2018; 47:83-95. [DOI: 10.1039/c7dt04044j] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The coordination chemistry of intramolecular stannylene phosphorus Lewis pairs incorporated into four or three membered ring molecules is presented.
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Affiliation(s)
- K. M. Krebs
- Institut für Anorganische Chemie
- Universität Tübingen
- 72076 Tübingen
- Germany
| | - S. Freitag
- Institut für Anorganische Chemie
- Universität Tübingen
- 72076 Tübingen
- Germany
| | - J.-J. Maudrich
- Institut für Anorganische Chemie
- Universität Tübingen
- 72076 Tübingen
- Germany
| | - H. Schubert
- Institut für Anorganische Chemie
- Universität Tübingen
- 72076 Tübingen
- Germany
| | - P. Sirsch
- Institut für Anorganische Chemie
- Universität Tübingen
- 72076 Tübingen
- Germany
| | - L. Wesemann
- Institut für Anorganische Chemie
- Universität Tübingen
- 72076 Tübingen
- Germany
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37
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Sharma MK, Singh D, Mahawar P, Yadav R, Nagendran S. Catalytic cyanosilylation using germylene stabilized platinum(ii) dicyanide. Dalton Trans 2018; 47:5943-5947. [DOI: 10.1039/c8dt00043c] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Catalytic cyanosilylation using platinum compound 3 is reported. Compound 3 is a germylene stabilized platinum(ii) dicyanide, trans-{(iBu)2ATIGe(iPr)}2Pt(CN)2 (ATI = aminotroponiminate).
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Affiliation(s)
| | - Dharmendra Singh
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi 110 016
- India
| | - Pritam Mahawar
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi 110 016
- India
| | - Ravi Yadav
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi 110 016
- India
| | - Selvarajan Nagendran
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi 110 016
- India
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38
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39
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Novotný M, Švec P, Růžičková Z, Růžička A. Direct access to non-symmetric lithium nitriloamidinate and disymmetric dilithium bisamidinate complexes from 1,3- or 1,4- dicyanobenzene and lithium amides. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.09.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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40
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Nie P, Yu Q, Zhu H, Wen T. Ruthenium and Osmium Germyl Complexes Derived from the Reactions of MXCl(PPh
3
)
3
(M = Ru, Os; X = Cl, H) with Terphenylchlorogermylene (C
6
H
3
‐2,6‐Trip
2
)GeCl (Trip = 2,4,6‐
i
Pr
3
C
6
H
2
). Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700991] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Peng Nie
- Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University 361005 Xiamen P. R. China
| | - Qian Yu
- Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University 361005 Xiamen P. R. China
| | - Hongping Zhu
- Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University 361005 Xiamen P. R. China
| | - Ting‐Bin Wen
- Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University 361005 Xiamen P. R. China
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41
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Álvarez-Rodríguez L, Brugos J, Cabeza JA, García-Álvarez P, Pérez-Carreño E. From a Diphosphanegermylene to Nickel, Palladium, and Platinum Complexes Containing Germyl PGeP Pincer Ligands. Chemistry 2017; 23:15107-15115. [DOI: 10.1002/chem.201702629] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Lucía Álvarez-Rodríguez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; 33071 Oviedo Spain
| | - Javier Brugos
- Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; 33071 Oviedo Spain
| | - Javier A. Cabeza
- Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; 33071 Oviedo Spain
| | - Pablo García-Álvarez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; 33071 Oviedo Spain
| | - Enrique Pérez-Carreño
- Departamento de Química Física y Analítica; Universidad de Oviedo; 33071 Oviedo Spain
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42
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Nie P, Li Y, Yu Q, Li B, Zhu H, Wen T. β‐Diketiminato–Germylene Complexes of Carbonyl Ruthenium: Synthesis, Structure, and Reactivity. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700607] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Peng Nie
- State Key Laboratory of Physical Chemistry of Solid Surfaces National Engineering Laboratory for Green Chemical Productions of Alcohols‐Ethers‐Esters Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University 361005 Xiamen P. R. China
| | - Yan Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces National Engineering Laboratory for Green Chemical Productions of Alcohols‐Ethers‐Esters Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University 361005 Xiamen P. R. China
| | - Qian Yu
- State Key Laboratory of Physical Chemistry of Solid Surfaces National Engineering Laboratory for Green Chemical Productions of Alcohols‐Ethers‐Esters Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University 361005 Xiamen P. R. China
| | - Bin Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces National Engineering Laboratory for Green Chemical Productions of Alcohols‐Ethers‐Esters Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University 361005 Xiamen P. R. China
| | - Hongping Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces National Engineering Laboratory for Green Chemical Productions of Alcohols‐Ethers‐Esters Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University 361005 Xiamen P. R. China
| | - Ting‐Bin Wen
- State Key Laboratory of Physical Chemistry of Solid Surfaces National Engineering Laboratory for Green Chemical Productions of Alcohols‐Ethers‐Esters Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University 361005 Xiamen P. R. China
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43
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Soleilhavoup M, Bertrand G. Borylenes: An Emerging Class of Compounds. Angew Chem Int Ed Engl 2017; 56:10282-10292. [PMID: 28577325 DOI: 10.1002/anie.201705153] [Citation(s) in RCA: 127] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Indexed: 11/11/2022]
Abstract
Free borylenes (R-B:) have only been spectroscopically characterized in the gas phase or in matrices at very low temperatures. However, in recent years, a few mono- and bis(Lewis base)-stabilized borylenes have been isolated. In both of these compounds the boron atom is in the formal oxidation state +I which contrasts with classical organoboron derivatives wherein the element is in the +III oxidation state. Mono(Lewis base)-stabilized borylenes are isoelectronic with singlet carbenes, and their reactivity mimics to some extent that of transition metals. They can activate small molecules, such as H2 , and coordinate an additional ligand; in other words, they are boron metallomimics. Bis(Lewis base)borylene adducts are isoelectronic with amines and phosphines. In contrast to boranes, which act as electron acceptors and thus Lewis acids, they are electron-rich and act as ligands for transition metals.
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Affiliation(s)
- Michele Soleilhavoup
- UCSD-CNRS Joint Research Chemistry Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA, 92093-0358, USA
| | - Guy Bertrand
- UCSD-CNRS Joint Research Chemistry Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA, 92093-0358, USA
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44
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Affiliation(s)
- Michele Soleilhavoup
- UCSD – CNRS Joint Research Chemistry Laboratory (UMI 3555), Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
| | - Guy Bertrand
- UCSD – CNRS Joint Research Chemistry Laboratory (UMI 3555), Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
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45
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Benedek Z, Szilvási T. Theoretical Assessment of Low-Valent Germanium Compounds as Transition Metal Ligands: Can They Be Better than Phosphines or NHCs? Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00155] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zsolt Benedek
- Department
of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Szent Gellért tér 4, 1111 Budapest, Hungary
| | - Tibor Szilvási
- Department of Chemical & Biological Engineering, University of Wisconsin—Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, United States
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46
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Álvarez-Rodríguez L, Cabeza JA, García-Álvarez P, Gómez-Gallego M, Merinero AD, Sierra MA. First Insertions of Carbene Ligands into Ge-N and Si-N Bonds. Chemistry 2017; 23:4287-4291. [PMID: 28225557 DOI: 10.1002/chem.201700828] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Indexed: 11/10/2022]
Abstract
The insertion of carbene ligands into Ge-N (three examples) and Si-N (one example) bonds has been achieved for the first time by treating Fischer carbene complexes (M=W, Cr) with bulky amidinatotetrylenes (E=Ge, Si). These reactions, which start with a nucleophilic attack of the amidinatotetrylene heavier group 14 atom to the carbene C atom, proceed through a stereoselective insertion of the carbene fragment into an E-N bond of the amidinatotetrylene ENCN four-membered ring, leading to [M(CO)5 L] derivatives in which L belongs to a novel family of tetrylene ligands comprising an ECNCN five-membered ring.
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Affiliation(s)
- Lucía Álvarez-Rodríguez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Spain.,Departamento de Química Orgánica e Inorgánica-IUQOEM, Universidad de Oviedo-CSIC, 33071, Oviedo, Spain
| | - Javier A Cabeza
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Spain.,Departamento de Química Orgánica e Inorgánica-IUQOEM, Universidad de Oviedo-CSIC, 33071, Oviedo, Spain
| | - Pablo García-Álvarez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Spain.,Departamento de Química Orgánica e Inorgánica-IUQOEM, Universidad de Oviedo-CSIC, 33071, Oviedo, Spain
| | - Mar Gómez-Gallego
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Spain.,Departamento de Química Orgánica, Universidad Complutense, 28040, Madrid, Spain
| | - Alba D Merinero
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Spain.,Departamento de Química Orgánica, Universidad Complutense, 28040, Madrid, Spain
| | - Miguel A Sierra
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Spain.,Departamento de Química Orgánica, Universidad Complutense, 28040, Madrid, Spain
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47
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Shan YL, Leong BX, Xi HW, Ganguly R, Li Y, Lim KH, So CW. Reactivity of an amidinato silylene and germylene toward germanium(ii), tin(ii) and lead(ii) halides. Dalton Trans 2017; 46:3642-3648. [PMID: 28251210 DOI: 10.1039/c7dt00051k] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The coordination chemistry of an amidinato silylene and germylene toward group 14 element(ii) halides is described. The reaction of the amidinato silicon(ii) amide [LSiN(SiMe3)2] (1, L = PhC(NtBu)2) with SnCl2 and PbBr2 afforded the amidinato silylene-dichlorostannylene and -dibromoplumbylene adducts [L{(Me3Si)2N}SiEX2] (E = Sn, X = Cl (2); E = Pb, X = Br (3)), respectively, in which there is a lone pair of electrons on the Sn(ii) and Pb(ii) atoms. X-ray crystallography, NMR spectroscopy and theoretical studies show conclusively that the Si(ii)-E(ii) bonds are donor-acceptor interactions. Similar electronic structures were found in the amidinato germylene-dichlorogermylene and -dichlorostannylene adducts [L{(Me3Si)2N}GeECl2] (E = Ge (5), Sn (6)), which were prepared by treatment of the amidinato germanium(ii) amide [LGeN(SiMe3)2] (4) with GeCl2·dioxane and SnCl2, respectively.
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Affiliation(s)
- Yu-Liang Shan
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore.
| | - Bi-Xiang Leong
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore.
| | - Hong-Wei Xi
- Singapore Institute of Technology, 10 Dover Drive, 138683, Singapore
| | - Rakesh Ganguly
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore.
| | - Yongxin Li
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore.
| | - Kok Hwa Lim
- Singapore Institute of Technology, 10 Dover Drive, 138683, Singapore
| | - Cheuk-Wai So
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore.
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48
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Nguyen TAN, Huynh TPL, Duong TQ, Tran DS, Pham VT, Dang TH. Bonding Situation of Bis-gold Chloride Complexes with N-heterocyclic Carbene-Analogues [(AuCl)2-NHEMe] (E=C – Pb) based on DFT Calculations. Z PHYS CHEM 2017. [DOI: 10.1515/zpch-2016-0786] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
We computationally investigated the structure and bonding situation of bis-gold chloride complexes, (AuCl)2, containing N-heterocyclic carbenes and analogues, called tetrylenes [(AuCl)2-NHEMe] (Au2-NHE) with E=C to Pb, using density functional theory (DFT) at the BP86 level with the basis sets def2-SVP, def2-TZVPP, and TZ2P+. The nature of the (AuCl)2-NHEMe bond in the Au2-NHE complexes was analyzed using charge and energy decomposition methods. The calculated equilibrium structures of the Au2-NHE complexes showed that the tetrylene ligands, NHEMe (E=C to Ge), are bonded in a head-on fashion to the bis-gold chloride fragment, (AuCl)2, and that the structure of Au2-NHSn contains a distorted head-on NHSn ligand, and the NHPb ligand is bonded in a side-on mode to the bis-gold chloride fragment, (AuCl)2. The theoretical calculation of bond dissociation energy (BDE) suggests that the bis-gold chloride-NHEMe bond strength increases from Au2-NHC to Au2-NHSi and then significantly decreases from Au2-NHSi to Au2-NHSn, and the strongest bond is exhibited for Au2-NHPb. The EDA-NOCV results and NOCV pairs indicate that the NHEMe ligand in the Au2-NHE complexes is a strong σ-donor and a weak π-acceptor, as well as a very weak π-donor (AuCl)2←{NHEMe}. The trend in the Au-E bond strength resulted from the increase in (AuCl)2←NHEMe donation. The results of this study may establish an interesting class of compounds worthy of further study.
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Affiliation(s)
- Thi Ai Nhung Nguyen
- Department of Chemistry , Hue University of Sciences, Hue University , Hue City , Vietnam
| | - Thi Phuong Loan Huynh
- Department of Chemistry , Hue University of Sciences, Hue University , Hue City , Vietnam
| | - Tuan Quang Duong
- Department of Chemistry , Hue University of Education, Hue University , Hue City , Vietnam
| | - Duc Sy Tran
- Department of Chemistry , Hue University of Education, Hue University , Hue City , Vietnam
- Department of Chemistry , Quang Binh University , Dong Hoi City , Vietnam
| | - Van Tat Pham
- Faculty of Science and Technology , Hoa Sen University , Ho Chi Minh City , Vietnam
| | - Tan Hiep Dang
- Office of Institute for Int’l Cooperation and Training, HCMC University of Food Industry , Tan Phu, Ho Chi Minh City , Vietnam
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Novotný M, Švec P, Růžičková Z, Růžička A. Structure of non-symmetric lithium amidinate complexes prepared by addition of lithium amides to various nitriles. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2016.11.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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50
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Álvarez-Rodríguez L, Cabeza JA, Fernández-Colinas JM, García-Álvarez P, Polo D. Amidinatogermylene Metal Complexes as Homogeneous Catalysts in Alcoholic Media. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00426] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lucía Álvarez-Rodríguez
- Departamento
de Química
Orgánica e Inorgánica-IUQOEM, Centro de Innovación
en Química Avanzada (ORFEO-CINQA), Universidad de Oviedo-CSIC, E-33071 Oviedo, Spain
| | - Javier A. Cabeza
- Departamento
de Química
Orgánica e Inorgánica-IUQOEM, Centro de Innovación
en Química Avanzada (ORFEO-CINQA), Universidad de Oviedo-CSIC, E-33071 Oviedo, Spain
| | - José M. Fernández-Colinas
- Departamento
de Química
Orgánica e Inorgánica-IUQOEM, Centro de Innovación
en Química Avanzada (ORFEO-CINQA), Universidad de Oviedo-CSIC, E-33071 Oviedo, Spain
| | - Pablo García-Álvarez
- Departamento
de Química
Orgánica e Inorgánica-IUQOEM, Centro de Innovación
en Química Avanzada (ORFEO-CINQA), Universidad de Oviedo-CSIC, E-33071 Oviedo, Spain
| | - Diego Polo
- Departamento
de Química
Orgánica e Inorgánica-IUQOEM, Centro de Innovación
en Química Avanzada (ORFEO-CINQA), Universidad de Oviedo-CSIC, E-33071 Oviedo, Spain
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