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Ruppert H, Meister A, Pfretzschner R, Vieira AF, Greb L. Concatenating Structural Constraint Effects at Tin for the Sequential Generation, Stabilization, and Transfer of Acyclic Aminocarbenes. J Am Chem Soc 2024; 146. [PMID: 38604608 PMCID: PMC11048120 DOI: 10.1021/jacs.4c02446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 03/22/2024] [Accepted: 03/25/2024] [Indexed: 04/13/2024]
Abstract
Structural constraint approaches have been employed toward different ends in recent years, from augmenting the nucleophilicity in pyramidalized low-valent p-block compounds to enhancing the Lewis acidities at planarized tetravalent p-block elements. While previous studies exploited these effects separately, this work introduces a strategy to concatenate structural constraint approaches at individual stages of a reaction sequence in a row to unlock a synthetic path unattainable by conventional methodologies. The boosted nucleophilicity resulting from the constrained tetracoordinated calix[4]pyrrolato stannate(II) dianion enables the reductive formation of sterically unprotected acyclic aminocarbenes. These amino carbenes are stabilized at the concomitantly formed square-planar stannane(IV) as air-stable adducts. Transfer of the carbenes onto copper(I) by cooperativity of the calix[4]pyrrole ligand finalizes this protocol to hitherto unreported yet prototypical carbene complexes. Detailed spectroscopic and quantum theoretical analyses establish the synergy of structural constraints and element-ligand cooperation as the linchpin to this reaction path and its selectivity.
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Affiliation(s)
- Heiko Ruppert
- Anorganisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg 69120, Germany
| | - Arne Meister
- Anorganisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg 69120, Germany
| | - Ronja Pfretzschner
- Anorganisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg 69120, Germany
| | - André Faria Vieira
- Anorganisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg 69120, Germany
| | - Lutz Greb
- Anorganisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg 69120, Germany
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2
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Beig N, Goyal V, Bansal RK. Application of N-heterocyclic carbene-Cu(I) complexes as catalysts in organic synthesis: a review. Beilstein J Org Chem 2023; 19:1408-1442. [PMID: 37767335 PMCID: PMC10520485 DOI: 10.3762/bjoc.19.102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Accepted: 09/05/2023] [Indexed: 09/29/2023] Open
Abstract
N-Heterocyclic carbenes (NHCs) are a special type of carbenes in which the carbene carbon atom is part of the nitrogen heterocyclic ring. Due to the simplicity of their synthesis and the modularity of their stereoelectronic properties, NHCs have unquestionably emerged as one of the most fascinating and well-known species in chemical science. The remarkable stability of NHCs can be attributed to both kinetic as well as thermodynamic effects caused by its structural features. NHCs constitute a well-established class of new ligands in organometallic chemistry. Although initially NHCs were regarded as pure σ-donor ligands, later experimental and theoretical studies established the presence of a significant back donation from the d-orbital of the metal to the π* orbital of the NHC. Over the last two decades, NHC-metal complexes have been extensively used as efficient catalysts in different types of organic reactions. Of these, NHC-Cu(I) complexes found prominence for various reasons, such as ease of preparation, possibility of structural diversity, low cost, and versatile applications. This article overviews applications of NHC-Cu(I) complexes as catalysts in organic synthesis over the last 12 years, which include hydrosilylation reactions, conjugate addition, [3 + 2] cycloaddition, A3 reaction, boration and hydroboration, N-H and C(sp2)-H carboxylation, C(sp2)-H alkenylation and allylation, C(sp2)-H arylation, C(sp2)-H amidation, and C(sp2)-H thiolation. Preceding the section of applications, a brief description of the structure of NHCs, nature of NHC-metal bond, and methods of preparation of NHC-Cu complexes is provided.
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Affiliation(s)
- Nosheen Beig
- Department of Chemistry, The IIS (deemed to be University), Jaipur, 302 020, India
| | - Varsha Goyal
- Department of Chemistry, The IIS (deemed to be University), Jaipur, 302 020, India
| | - Raj Kumar Bansal
- Department of Chemistry, The IIS (deemed to be University), Jaipur, 302 020, India
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3
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Huerfano IJ, Laskowski CA, Pink M, Carta V, Hillhouse GL, Caulton KG, Smith JM. Redox-Neutral Transformations of Carbon Dioxide Using Coordinatively Unsaturated Late Metal Silyl Amide Complexes. Inorg Chem 2022; 61:20986-20993. [PMID: 36516978 DOI: 10.1021/acs.inorgchem.2c03453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Two-coordinate silylamido complexes of nickel and copper rapidly react with CO2 to selectively form a new cyanate ligand along with hexamethyldisiloxane byproducts. Mechanistic insight into these reactions was obtained from the synthesis of proposed intermediates, several silyl- and phenyl- substituted amido analogues, and their subsequent reactivity with CO2. These studies suggest that a unique intramolecular double silyl transfer step facilitates CO2 deoxygenation, which likely contributes to the rapid rates of reaction. The deoxygenation reactions create a platform for a synthetic cycle in which copper amido complexes convert CO2 to organic silylcarbamates.
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Affiliation(s)
- I J Huerfano
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Carl A Laskowski
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Maren Pink
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Veronica Carta
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Gregory L Hillhouse
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Kenneth G Caulton
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Jeremy M Smith
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
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4
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Boysen N, Philip A, Rogalla D, Karppinen M, Devi A. Role of Anionic Backbone in NHC-Stabilized Coinage Metal Complexes: New Precursors for Atomic Layer Deposition. Chemistry 2022; 28:e202103798. [PMID: 35044704 PMCID: PMC9303662 DOI: 10.1002/chem.202103798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Indexed: 11/30/2022]
Abstract
Cu and Ag precursors that are volatile, reactive, and thermally stable are currently of high interest for their application in atomic-layer deposition (ALD) of thin metal films. In pursuit of new precursors for coinage metals, namely Cu and Ag, a series of new N-heterocyclic carbene (NHC)-based CuI and AgI complexes were synthesized. Modifications in the substitution pattern of diketonate-based anionic backbones led to five monomeric Cu complexes and four closely related Ag complexes with the general formula [M(tBu NHC)(R)] (M=Cu, Ag; tBu NHC=1,3-di-tert-butyl-imidazolin-2-ylidene; R=diketonate). Thermal analysis indicated that most of the Cu complexes are thermally stable and volatile compared to the more fragile Ag analogs. One of the promising Cu precursors was evaluated for the ALD of nanoparticulate Cu metal deposits by using hydroquinone as the reducing agent at appreciably low deposition temperatures (145-160 °C). This study highlights the considerable impact of the employed ligand sphere on the structural and thermal properties of metal complexes that are relevant for vapor-phase processing of thin films.
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Affiliation(s)
- Nils Boysen
- Inorganic Materials Chemistry (IMC)Ruhr University Bochum44801BochumGermany
| | - Anish Philip
- Department of Chemistry and Materials ScienceAalto University P.O. Box 1610000076EspooFinland
| | | | - Maarit Karppinen
- Department of Chemistry and Materials ScienceAalto University P.O. Box 1610000076EspooFinland
| | - Anjana Devi
- Inorganic Materials Chemistry (IMC)Ruhr University Bochum44801BochumGermany
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5
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Boysen N, Misimi B, Muriqi A, Wree JL, Hasselmann T, Rogalla D, Haeger T, Theirich D, Nolan M, Riedl T, Devi A. A carbene stabilized precursor for the spatial atomic layer deposition of copper thin films. Chem Commun (Camb) 2020; 56:13752-13755. [PMID: 33063069 DOI: 10.1039/d0cc05781a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
This paper demonstrates a carbene stabilized precursor [Cu(tBuNHC)(hmds)] with suitable volatility, reactivity and thermal stability, that enables the spatial plasma-enhanced atomic layer deposition (APP-ALD) of copper thin films at atmospheric pressure. The resulting conductive and pure copper layers were thoroughly analysed and a comparison of precursor and process with the previously reported silver analogue [Ag(tBuNHC)(hmds)] revealed interesting similarities and notable differences in precursor chemistry and growth characteristics. This first report of APP-ALD grown copper layers is an important starting point for high throughput, low-cost manufacturing of copper films for nano- and optoelectronic devices.
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Affiliation(s)
- Nils Boysen
- Inorganic Materials Chemistry, Ruhr University Bochum, 44801 Bochum, Germany.
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6
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Obanda A, Valerius K, Mague JT, Sproules S, Donahue JP. Group 10 Metal Dithiolene Bis(isonitrile) Complexes: Synthesis, Structures, Properties, and Reactivity. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00375] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Antony Obanda
- Department of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118-5698, United States
| | - Kendra Valerius
- Department of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118-5698, United States
| | - Joel T. Mague
- Department of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118-5698, United States
| | - Stephen Sproules
- WestCHEM, School of Chemistry, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - James P. Donahue
- Department of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118-5698, United States
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7
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Sinclair J, Dai G, McDonald R, Ferguson MJ, Brown A, Rivard E. Insight into the Decomposition Mechanism of Donor-Acceptor Complexes of EH 2 (E = Ge and Sn) and Access to Germanium Thin Films from Solution. Inorg Chem 2020; 59:10996-11008. [PMID: 32686404 DOI: 10.1021/acs.inorgchem.0c01492] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Electron-donating N-heterocyclic carbenes (Lewis bases, LB) and electron-accepting Lewis acids (LA) have been used in tandem to yield donor-acceptor complexes of inorganic tetrelenes LB·EH2·LA (E = Si, Ge, and Sn). Herein, we introduce the new germanium (II) dihydride adducts ImMe2·GeH2·BH3 (ImMe2 = (HCNMe)2C:) and ImiPr2Me2·GeH2·BH3 (ImiPr2Me2 = (MeCNiPr)2C:), with the former complex containing nearly 40 wt % germanium. The thermal release of bulk germanium from ImMe2·GeH2·BH3 (and its deuterated isotopologue ImMe2·GeD2·BD3) was examined in solution, and a combined kinetic and computational investigation was undertaken to probe the mechanism by which Ge is liberated. Moreover, the thermolysis of ImMe2·GeH2·BH3 in solution cleanly affords conformal nanodimensional layers of germanium as thin films of variable thicknesses (20-70 nm) on silicon wafers. We also conducted a computational investigation into potential decomposition pathways for the germanium(II)- and tin(II)-dihydride complexes NHC·EH2·BH3 (NHC = [(HCNR)2C:]; R = 2,6-iPr2C6H3 (Dipp), Me, and H; and E = Ge and Sn). Overall, this study introduces a mild and convenient solution-only protocol for the deposition of thin films of Ge, a widely used semiconductor in materials research and industry.
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Affiliation(s)
- Jocelyn Sinclair
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta, Canada T6G 2G2
| | - Guoliang Dai
- School of Chemistry, Biology and Materials Engineering, Suzhou University of Science and Technology, 2215009 Suzhou, P. R. China
| | - Robert McDonald
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta, Canada T6G 2G2
| | - Michael J Ferguson
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta, Canada T6G 2G2
| | - Alex Brown
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta, Canada T6G 2G2
| | - Eric Rivard
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta, Canada T6G 2G2
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8
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Matavos-Aramyan S, Soukhakian S, Jazebizadeh MH. Mononuclear Cu Complexes Based on Nitrogen Heterocyclic Carbene: A Comprehensive Review. Top Curr Chem (Cham) 2020; 378:39. [PMID: 32367181 DOI: 10.1007/s41061-020-00304-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 04/16/2020] [Indexed: 11/28/2022]
Abstract
During the last decade, organometallic, coordination, and catalytic chemistry of the three-dimensional metals such as copper (Cu) has been greatly affected by the emergence of nitrogen heterocyclic carbene (NHC) complexes. The NHCs, and in particular the mononuclear CuI-based ones, have been proven vastly useful in several applications such as in biosynthesis, catalysis, photochemistry, etc. This review tries to thoroughly describe a series of mononuclear CuI NHC complexes and their subcategories such as heteroleptics, and bidentate and tridentate heteroatom complexes, and give some detailed insights on their development, emergence, and applications. A brief outlook is also disclosed to enable other researchers to further develop a platform for future advances and studies in the field of CuI-based NHCs.
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Affiliation(s)
- Sina Matavos-Aramyan
- Research and Development Department, Division of Chemistry, Raazi Environmental Protection Foundation, Shiraz, Iran.
| | - Sadaf Soukhakian
- Research and Development Department, Division of Chemistry, Raazi Environmental Protection Foundation, Shiraz, Iran
| | - Mohammad Hossein Jazebizadeh
- Research and Development Department, Division of Chemistry, Raazi Environmental Protection Foundation, Shiraz, Iran
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9
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Land MA, Robertson KN, Barry ST. Ligand-Assisted Volatilization and Thermal Stability of Bis(imido)dichloromolybdenum(VI) ([( t-BuN═) 2MoCl 2] 2) and Its Adducts. Organometallics 2020. [DOI: 10.1021/acs.organomet.9b00578] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michael A. Land
- Department of Chemistry, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Canada
| | - Katherine N. Robertson
- The Atlantic Centre for Green Chemistry, Department of Chemistry, Saint Mary’s University, Halifax, Nova Scotia B3H 3C3, Canada
| | - Seán T. Barry
- Department of Chemistry, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Canada
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10
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Blakeney KJ, Martin PD, Winter CH. A Volatile Dialane Complex from Ring Expansion of an N-Heterocyclic Carbene and Its Use in the Thermal Atomic Layer Deposition of Aluminum Metal Films. Organometallics 2020. [DOI: 10.1021/acs.organomet.9b00774] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kyle J. Blakeney
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
| | - Philip D. Martin
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
| | - Charles H. Winter
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
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11
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Bačić G, Rankine CD, Masuda JD, Wann DA, Barry ST. Volatile and Thermally Stable Polymeric Tin Trifluoroacetates. Inorg Chem 2020; 59:996-1005. [DOI: 10.1021/acs.inorgchem.9b01308] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Goran Bačić
- Department of Chemistry, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Canada
| | - Conor D. Rankine
- Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K
| | - Jason D. Masuda
- Department of Chemistry, Saint Mary’s University, 923 Robie Street, Halifax, Nova Scotia B3H 3C3, Canada
| | - Derek A. Wann
- Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K
| | - Seán T. Barry
- Department of Chemistry, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Canada
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12
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Griffiths MBE, Dubrawski ZS, Bačić G, Japahuge A, Masuda JD, Zeng T, Barry ST. Controlling the Thermal Stability and Volatility of Organogold(I) Compounds for Vapor Deposition with Complementary Ligand Design. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201901087] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Matthew B. E. Griffiths
- Department of Chemistry Carleton University 1125 Colonel By Drive K1S 5B6 Ottawa Ontario Canada
| | - Zachary S. Dubrawski
- Department of Chemistry Carleton University 1125 Colonel By Drive K1S 5B6 Ottawa Ontario Canada
| | - Goran Bačić
- Department of Chemistry Carleton University 1125 Colonel By Drive K1S 5B6 Ottawa Ontario Canada
| | - Achini Japahuge
- Department of Chemistry Carleton University 1125 Colonel By Drive K1S 5B6 Ottawa Ontario Canada
| | - Jason D. Masuda
- Department of Chemistry Saint Mary's University 923 Robie Street B3H 3C3 Halifax Nova Scotia Canada
| | - Tao Zeng
- Department of Chemistry Carleton University 1125 Colonel By Drive K1S 5B6 Ottawa Ontario Canada
| | - Seán T. Barry
- Department of Chemistry Carleton University 1125 Colonel By Drive K1S 5B6 Ottawa Ontario Canada
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13
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Danopoulos AA, Simler T, Braunstein P. N-Heterocyclic Carbene Complexes of Copper, Nickel, and Cobalt. Chem Rev 2019; 119:3730-3961. [PMID: 30843688 DOI: 10.1021/acs.chemrev.8b00505] [Citation(s) in RCA: 269] [Impact Index Per Article: 53.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The emergence of N-heterocyclic carbenes as ligands across the Periodic Table had an impact on various aspects of the coordination, organometallic, and catalytic chemistry of the 3d metals, including Cu, Ni, and Co, both from the fundamental viewpoint but also in applications, including catalysis, photophysics, bioorganometallic chemistry, materials, etc. In this review, the emergence, development, and state of the art in these three areas are described in detail.
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Affiliation(s)
- Andreas A Danopoulos
- Laboratory of Inorganic Chemistry , National and Kapodistrian University of Athens , Panepistimiopolis Zografou , Athens GR 15771 , Greece.,Université de Strasbourg, CNRS, Institut de Chimie UMR 7177 , Laboratoire de Chimie de Coordination , Strasbourg 67081 Cedex , France
| | - Thomas Simler
- Université de Strasbourg, CNRS, Institut de Chimie UMR 7177 , Laboratoire de Chimie de Coordination , Strasbourg 67081 Cedex , France
| | - Pierre Braunstein
- Université de Strasbourg, CNRS, Institut de Chimie UMR 7177 , Laboratoire de Chimie de Coordination , Strasbourg 67081 Cedex , France
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14
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Wallbaum L, Weismann D, Löber D, Bruhn C, Prochnow P, Bandow JE, Siemeling U. Stable and Persistent Acyclic Diaminocarbenes with Cycloalkyl Substituents and Their Transformation to β-Lactams by Uncatalysed Carbonylation with CO. Chemistry 2019; 25:1488-1497. [PMID: 30408240 DOI: 10.1002/chem.201805307] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 11/07/2018] [Indexed: 01/07/2023]
Abstract
Four new acyclic diaminocarbenes (ADACs), viz. [(cyclo-Cn H2n-1 )2 N]2 C (n=5-7) and iPr2 N-C-N(cyclo-C6 H11 )2 , were synthesised by reacting the corresponding formamidinium hexafluorophosphates with NaN(SiMe3 )2 . Their nucleophilicities and electrophilicities were respectively judged from the 1 JCH values determined for the N2 CH unit of the corresponding formamidinium cations and from the 77 Se NMR chemical shifts of the selenourea derivatives obtained from the reaction of elemental selenium with the corresponding ADACs. An ambiphilic profile essentially identical to that of the "Alder carbene" (iPr2 N)2 C was found in each case. Similar to the latter carbene, the new ADACs undergo a well-defined thermal decomposition by β-fragmentation, affording an alkene and a formamidine. The stabilities of [(cyclo-Cn H2n-1 )2 N]2 C depend strongly on the value of n, following the order 6>5>7, with the latter congener being too unstable for isolation. [(cyclo-C6 H11 )2 N]2 C shows no thermal decomposition at room temperature in solution and is thus significantly more stable than (iPr2 N)2 C. The stability of iPr2 N-C-N(cyclo-C6 H11 )2 is intermediate between that of (iPr2 N)2 C and [(cyclo-C6 H11 )2 N]2 C, its β-fragmentation selectively affording propene and iPrN=CH-N(cyclo-C6 H11 )2 . [(cyclo-Cn H2n-1 )2 N]2 C (n=5-7) react readily with CO under mild conditions, selectively affording trisubstituted spirocyclic β-lactam derivatives with an antimicrobial activity spectrum similar to that of penicillin G.
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Affiliation(s)
- Lars Wallbaum
- Institute of Chemistry, University of Kassel, Heinrich-Plett-Straße 40, 34132, Kassel, Germany
| | - Daniel Weismann
- Institute of Chemistry, University of Kassel, Heinrich-Plett-Straße 40, 34132, Kassel, Germany
| | - Dennis Löber
- Institute of Chemistry, University of Kassel, Heinrich-Plett-Straße 40, 34132, Kassel, Germany
| | - Clemens Bruhn
- Institute of Chemistry, University of Kassel, Heinrich-Plett-Straße 40, 34132, Kassel, Germany
| | - Pascal Prochnow
- Biology of Microorganisms, Ruhr University Bochum, Universitätsstraße 150, 44801, Bochum, Germany
| | - Julia E Bandow
- Biology of Microorganisms, Ruhr University Bochum, Universitätsstraße 150, 44801, Bochum, Germany
| | - Ulrich Siemeling
- Institute of Chemistry, University of Kassel, Heinrich-Plett-Straße 40, 34132, Kassel, Germany
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15
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Boysen N, Hasselmann T, Karle S, Rogalla D, Theirich D, Winter M, Riedl T, Devi A. An N‐Heterocyclic Carbene Based Silver Precursor for Plasma‐Enhanced Spatial Atomic Layer Deposition of Silver Thin Films at Atmospheric Pressure. Angew Chem Int Ed Engl 2018; 57:16224-16227. [DOI: 10.1002/anie.201808586] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 09/07/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Nils Boysen
- Inorganic Materials ChemistryChair of Inorganic Chemistry IIRuhr University Bochum Universitätsstraße 150 44801 Bochum Germany
| | - Tim Hasselmann
- Institute of Electronic DevicesUniversity of Wuppertal Rainer-Gruenter-Straße 21 42119 Wuppertal Germany
| | - Sarah Karle
- Inorganic Materials ChemistryChair of Inorganic Chemistry IIRuhr University Bochum Universitätsstraße 150 44801 Bochum Germany
| | | | - Detlef Theirich
- Institute of Electronic DevicesUniversity of Wuppertal Rainer-Gruenter-Straße 21 42119 Wuppertal Germany
| | - Manuela Winter
- Inorganic Materials ChemistryChair of Inorganic Chemistry IIRuhr University Bochum Universitätsstraße 150 44801 Bochum Germany
| | - Thomas Riedl
- Institute of Electronic DevicesUniversity of Wuppertal Rainer-Gruenter-Straße 21 42119 Wuppertal Germany
| | - Anjana Devi
- Inorganic Materials ChemistryChair of Inorganic Chemistry IIRuhr University Bochum Universitätsstraße 150 44801 Bochum Germany
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16
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Herndon JW. The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2017. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.08.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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17
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Boysen N, Hasselmann T, Karle S, Rogalla D, Theirich D, Winter M, Riedl T, Devi A. Ein N‐heterocyclischer Carbenkomplex des Silbers für die plasmaunterstützte räumlich getrennte Atomlagenabscheidung dünner Silberschichten bei Atmosphärendruck. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201808586] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Nils Boysen
- Chemie Anorganischer MaterialienLehrstuhl Anorganische Chemie IIRuhr-Universität Bochum Universitätsstraße 150 44801 Bochum Deutschland
| | - Tim Hasselmann
- Lehrstuhl für Elektronische BauelementeUniversität Wuppertal Rainer-Gruenter-Straße 21 42119 Wuppertal Deutschland
| | - Sarah Karle
- Chemie Anorganischer MaterialienLehrstuhl Anorganische Chemie IIRuhr-Universität Bochum Universitätsstraße 150 44801 Bochum Deutschland
| | | | - Detlef Theirich
- Lehrstuhl für Elektronische BauelementeUniversität Wuppertal Rainer-Gruenter-Straße 21 42119 Wuppertal Deutschland
| | - Manuela Winter
- Chemie Anorganischer MaterialienLehrstuhl Anorganische Chemie IIRuhr-Universität Bochum Universitätsstraße 150 44801 Bochum Deutschland
| | - Thomas Riedl
- Lehrstuhl für Elektronische BauelementeUniversität Wuppertal Rainer-Gruenter-Straße 21 42119 Wuppertal Deutschland
| | - Anjana Devi
- Chemie Anorganischer MaterialienLehrstuhl Anorganische Chemie IIRuhr-Universität Bochum Universitätsstraße 150 44801 Bochum Deutschland
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Bačić G, Zanders D, Mallick B, Devi A, Barry ST. Designing Stability into Thermally Reactive Plumbylenes. Inorg Chem 2018; 57:8218-8226. [PMID: 29943579 DOI: 10.1021/acs.inorgchem.8b00719] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Lead analogues of N-heterocyclic carbenes (NHPbs) are the least understood members of this increasingly important class of compounds. Here we report the design, preparation, isolation, structure, volatility, and decomposition pathways of a novel aliphatic NHPb: rac- N 2, N 3-di- tert-butylbutane-2,3-diamido lead(II) (1Pb). The large steric bulk of the tert-butylamido moieties and rac-butane backbone successfully hinder redox decomposition pathways observed for diamidoethylene and -ethane backbone analogues, pushing the onset of thermal decomposition from below 0 °C to above 150 °C. With an exceptionally high vapor pressure of 1 Torr at 94 ± 2 °C and excellent thermal stability among Pb(II) complexes, 1Pb is a promising precursor for the chemical vapor deposition (CVD) and atomic layer deposition (ALD) of functional lead-containing materials.
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Affiliation(s)
- Goran Bačić
- Department of Chemistry , Carleton University , 1125 Colonel By Drive , Ottawa , Ontario K1S 5B6 , Canada
| | | | | | | | - Seán T Barry
- Department of Chemistry , Carleton University , 1125 Colonel By Drive , Ottawa , Ontario K1S 5B6 , Canada
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