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Maser L, Schneider C, Vondung L, Alig L, Langer R. Quantifying the Donor Strength of Ligand-Stabilized Main Group Fragments. J Am Chem Soc 2019; 141:7596-7604. [DOI: 10.1021/jacs.9b02598] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Leon Maser
- Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Str. 4, 35032 Marburg, Germany
| | - Christian Schneider
- Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Str. 4, 35032 Marburg, Germany
| | - Lisa Vondung
- Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Str. 4, 35032 Marburg, Germany
| | - Lukas Alig
- Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Str. 4, 35032 Marburg, Germany
| | - Robert Langer
- Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Str. 4, 35032 Marburg, Germany
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2
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Doddi A, Peters M, Tamm M. N-Heterocyclic Carbene Adducts of Main Group Elements and Their Use as Ligands in Transition Metal Chemistry. Chem Rev 2019; 119:6994-7112. [PMID: 30983327 DOI: 10.1021/acs.chemrev.8b00791] [Citation(s) in RCA: 307] [Impact Index Per Article: 61.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
N-Heterocyclic carbenes (NHC) are nowadays ubiquitous and indispensable in many research fields, and it is not possible to imagine modern transition metal and main group element chemistry without the plethora of available NHCs with tailor-made electronic and steric properties. While their suitability to act as strong ligands toward transition metals has led to numerous applications of NHC complexes in homogeneous catalysis, their strong σ-donating and adaptable π-accepting abilities have also contributed to an impressive vitalization of main group chemistry with the isolation and characterization of NHC adducts of almost any element. Formally, NHC coordination to Lewis acids affords a transfer of nucleophilicity from the carbene carbon atom to the attached exocyclic moiety, and low-valent and low-coordinate adducts of the p-block elements with available lone pairs and/or polarized carbon-element π-bonds are able to act themselves as Lewis basic donor ligands toward transition metals. Accordingly, the availability of a large number of novel NHC adducts has not only produced new varieties of already existing ligand classes but has also allowed establishment of numerous complexes with unusual and often unprecedented element-metal bonds. This review aims at summarizing this development comprehensively and covers the usage of N-heterocyclic carbene adducts of the p-block elements as ligands in transition metal chemistry.
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Affiliation(s)
- Adinarayana Doddi
- Technische Universität Braunschweig, Institut für Anorganische und Analytische Chemie, Hagenring 30, 38106 Braunschweig, Germany
| | - Marius Peters
- Technische Universität Braunschweig, Institut für Anorganische und Analytische Chemie, Hagenring 30, 38106 Braunschweig, Germany
| | - Matthias Tamm
- Technische Universität Braunschweig, Institut für Anorganische und Analytische Chemie, Hagenring 30, 38106 Braunschweig, Germany
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3
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Abstract
The reactions of 1-tert butyl-5-thiotetrazole (HtttBu) with Na[BH4] provides Na[H2B(tttBu)2] (Na[1]) or Na[HB(tttBu)3] (Na[2]) in refluxing THF or xylene, respectively. Treating [RuCl(Ph)(CO)(PPh3)2] with Na[2] affords the triply-buttressed ruthenaboratrane [Ru(CO)(PPh3){κ4-B,S,S',S''-B(tttBu)3}] (5) whilst Na[1] with [IrCl(CO)(PPh3)2] or [RuCl(Ph)(CO)(PPh3)2] provides rare examples of doubly-buttressed metallaboratranes [IrH(CO)(PPh3){κ3-B,S,S'-BH(tttBu)2}] (7) and [Ru(CO)(PPh3)2{κ3-B,S,S'-BH(tttBu)2}] (12), the latter via the isolable thiotetrazoylborate complex [Ru(Ph)(CO)(PPh3){κ3-H,S,S'-H2B(tttBu)2}] (11).
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Affiliation(s)
- Anthony F Hill
- Research School of Chemistry, Australian National University, Acton, Canberra, A.C.T., Australia.
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4
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Foreman MRSJ, Hill AF, Ma C, Tshabang N, White AJP. Synthesis and ligand substitution reactions of κ4-B,S,S′,S′′-ruthenaboratranes. Dalton Trans 2019; 48:209-219. [DOI: 10.1039/c8dt04278k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Ruthenaboratranes of the form [Ru(CO)L{κ4-B(mt)3}] (mt = N-methimazolyl) arise via substitution of the PPh3 ligand in [Ru(CO)(PPh3){κ4-B(mt)3}] by L (L = PMe2Ph, PMe3, P(OMe)3, P(OEt)3, P(OPh)3) or reactions of [RuCl(R)(CO)Ln] (R = Ph, CHCHPh; n = 2, L = PCy3; n = 3, L = P(OMe)3, PMe2Ph) with Na[HB(mt)3].
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Affiliation(s)
- Mark R. St.-J. Foreman
- Department of Chemistry and Chemical Engineering
- Nuclear Chemistry and Industrial Materials Recycling
- Chalmers University of Technology
- Göteborg
- Sweden
| | - Anthony F. Hill
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
| | - Chenxi Ma
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
| | - Never Tshabang
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
- Department of Chemistry
| | - Andrew J. P. White
- Chemical Crystallography Laboratory
- Department of Chemistry
- Imperial College London White City Campus
- UK
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5
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Ma C, Hill AF. Methimazolyl based diptych bicyclo-[3.3.0]-ruthenaboratranes. Dalton Trans 2019; 48:1976-1992. [DOI: 10.1039/c8dt04813d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reactions of [RuCl(R)(CO)(PPh3)2] (R = CHCHPh, Ph) with Na[H2B(mt)2] (mt = N-methyl-2-mercaptoimidazolyl) transiently provide [Ru(R)(CO)(PPh3){κ3-H,S,S′-H2B(mt)2}] which each evolve to the ruthenaboratrane [Ru(CO)(PPh3)2{κ3-B,S,S′-BH(mt)2}](Ru→B)8.
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Affiliation(s)
- Chenxi Ma
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
| | - Anthony F. Hill
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
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6
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Iannetelli A, Tizzard G, Coles SJ, Owen GR. Sequential Migrations between Boron and Rhodium Centers: A Cooperative Process between Rhodium and a Monosubstituted Borohydride Unit. Inorg Chem 2017; 57:446-456. [DOI: 10.1021/acs.inorgchem.7b02700] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Angelo Iannetelli
- School of Applied
Science, University of South Wales, Treforest CF37 4AT, United Kingdom
| | - Graham Tizzard
- National Crystallography Service, School
of Chemistry, University of Southampton, Southampton SO17 1BJ, United Kingdom
| | - Simon J. Coles
- National Crystallography Service, School
of Chemistry, University of Southampton, Southampton SO17 1BJ, United Kingdom
| | - Gareth R. Owen
- School of Applied
Science, University of South Wales, Treforest CF37 4AT, United Kingdom
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7
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Saha K, Ramalakshmi R, Borthakur R, Gomosta S, Pathak K, Dorcet V, Roisnel T, Halet JF, Ghosh S. An Efficient Method for the Synthesis of Boratrane Complexes of Late Transition Metals. Chemistry 2017; 23:18264-18275. [PMID: 28949073 DOI: 10.1002/chem.201704332] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Indexed: 11/08/2022]
Abstract
In a quest for efficient precursors for the synthesis of boratrane complexes of late transition metals, we have developed a useful synthetic method using [L'M(μ-Cl)Clx ]2 as precursors (L'=η6 -p-cymene, M=Ru, x=1; L'=COD, M=Rh, x=0 and L'=Cp*, M=Ir or Rh, x=1; COD=1,5-cyclooctadiene, Cp*=η5 -C5 Me5 ). For example, treatment of Na[(H3 B)bbza] or Na[(H2 B)mp2 ] (bbza=bis(benzothiazol-2-yl)amine; mp=2-mercaptopyridyl) with [L'M(μ-Cl)Clx ]2 yielded [(η6 -p-cymene)RuBH{(NCSC6 H4 )(NR)}2 ] (2; R=NCSC6 H4 ), [{N(NCSC6 H4 )2 }RhBH{(NCSC6 H4 )(NR)}2 ] (3; R=NCS-C6 H4 ), [(η6 -p-cymene)RuBH(L)2 ] (5; L=C5 H4 NS), and [Cp*MBH(L)2 ] (6 and 7; L=C5 H4 NS, M=Ir or Rh). In order to delineate the significance of the ligands, we studied the reactivity of [(COD)Rh(μ-Cl)]2 with Na[(H3 B)bbza], which led to the formation of the isomeric agostic complexes [(η4 -COD)Rh(μ-H)BHRh(C14 H8 N3 S2 )3 ], 4 a and 4 b, in parallel to the formation of 16-electron square-pyramidal rhodaboratrane complex 3. Compounds 4 a and 4 b show two different geometries, in which the Rh-B bonds are shorter than in the reported Rh agostic complexes. The new compounds have been characterized in solution by various spectroscopic analyses, and their structural arrangements have been unequivocally established by crystallographic analyses. DFT calculations provide useful insights regarding the stability of these metallaboratrane complexes as well as their M→B bonding interactions.
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Affiliation(s)
- Koushik Saha
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Rongala Ramalakshmi
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Rosmita Borthakur
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Suman Gomosta
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Kriti Pathak
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Vincent Dorcet
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Ecole Nationale Supérieure de Chimie de Rennes, Université de Rennes 1, 35042, Rennes Cedex, France
| | - Thierry Roisnel
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Ecole Nationale Supérieure de Chimie de Rennes, Université de Rennes 1, 35042, Rennes Cedex, France
| | - Jean-François Halet
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Ecole Nationale Supérieure de Chimie de Rennes, Université de Rennes 1, 35042, Rennes Cedex, France
| | - Sundargopal Ghosh
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
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8
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Pettinari C, Pettinari R, Marchetti F. Golden Jubilee for Scorpionates. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2016. [DOI: 10.1016/bs.adomc.2016.01.002] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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9
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Tazelaar CGJ, Nicolas E, van Dijk T, Broere DLJ, Cardol M, Lutz M, Gudat D, Slootweg JC, Lammertsma K. Tris(pyrazolyl)phosphines with copper(i): from monomers to polymers. Dalton Trans 2016; 45:2237-49. [DOI: 10.1039/c5dt03994k] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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10
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Greenacre VK, Ansell MB, Roe SM, Crossley IR. Synthesis, Structures and Coordination Chemistry of Singly Bridged Phosphane‐Boranes with Coordinately Unsaturated Platinum Group Metals. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402649] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Victoria K. Greenacre
- Department of Chemistry, University of Sussex, Brighton BN1 9QJ, United Kingdom, http://www.sussex.ac.uk/lifesci/crossleylab
| | - Melvyn B. Ansell
- Department of Chemistry, University of Sussex, Brighton BN1 9QJ, United Kingdom, http://www.sussex.ac.uk/lifesci/crossleylab
| | - S. Mark Roe
- Department of Chemistry, University of Sussex, Brighton BN1 9QJ, United Kingdom, http://www.sussex.ac.uk/lifesci/crossleylab
| | - Ian R. Crossley
- Department of Chemistry, University of Sussex, Brighton BN1 9QJ, United Kingdom, http://www.sussex.ac.uk/lifesci/crossleylab
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11
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Tsoureas N, Hamilton A, Haddow MF, Harvey JN, Orpen AG, Owen GR. Insight into the Hydrogen Migration Processes Involved in the Formation of Metal–Borane Complexes: Importance of the Third Arm of the Scorpionate Ligand. Organometallics 2013. [DOI: 10.1021/om4002389] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Nikolaos Tsoureas
- The School of Chemistry, University of Bristol, Cantock’s
Close, Bristol, U.K. BS8 1TS
| | - Alex Hamilton
- The School of Chemistry, University of Bristol, Cantock’s
Close, Bristol, U.K. BS8 1TS
| | - Mairi F. Haddow
- The School of Chemistry, University of Bristol, Cantock’s
Close, Bristol, U.K. BS8 1TS
| | - Jeremy N. Harvey
- The School of Chemistry, University of Bristol, Cantock’s
Close, Bristol, U.K. BS8 1TS
| | - A. Guy Orpen
- The School of Chemistry, University of Bristol, Cantock’s
Close, Bristol, U.K. BS8 1TS
| | - Gareth R. Owen
- The School of Chemistry, University of Bristol, Cantock’s
Close, Bristol, U.K. BS8 1TS
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12
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Kuan SL, Leong WK, Webster RD, Goh LY. Mixed-Sandwich (Cp*/(HMB))Ru Complexes Containing Bis(methimazolyl)(pyrazolyl)borate (Cp* = η5-C5Me5, HMB = η6-C6Me6). Organometallics 2012. [DOI: 10.1021/om300497p] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Seah Ling Kuan
- Department
of Chemistry, National University of Singapore, Kent Ridge, Singapore 117543
| | - Weng Kee Leong
- Division of Chemistry and Biological
Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link,
Singapore 637371
| | - Richard D. Webster
- Division of Chemistry and Biological
Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link,
Singapore 637371
| | - Lai Yoong Goh
- ICP, UTAR Global Research
Network, Universiti Tunku Abdul Rahman,
46200 Petaling Jaya, Selangor, Malaysia
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13
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14
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Owen GR. Hydrogen atom storage upon Z-class borane ligand functions: an alternative approach to ligand cooperation. Chem Soc Rev 2012; 41:3535-46. [DOI: 10.1039/c2cs15346g] [Citation(s) in RCA: 127] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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15
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Kuan SL, Leong WK, Webster RD, Goh LY. Mixed-Sandwich Cp*Cr Complexes Containing Poly(methimazolyl)borates (Cp* = C5Me5): Syntheses and Structural and Electrochemical Studies. Organometallics 2011. [DOI: 10.1021/om2008666] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Seah Ling Kuan
- Department of Chemistry, National University of Singapore, Kent
Ridge, Singapore 117543
| | - Weng Kee Leong
- Division of Chemistry
and Biological Chemistry, School of Physical and Mathematical
Sciences, 21 Nanyang Link, Nanyang Technological University, Singapore 637371
| | - Richard D. Webster
- Division of Chemistry
and Biological Chemistry, School of Physical and Mathematical
Sciences, 21 Nanyang Link, Nanyang Technological University, Singapore 637371
| | - Lai Yoong Goh
- UTAR Global Research Network, Universiti Tunku Abdul Rahman, 46200 Petaling Jaya, Selangor, Malaysia
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16
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Tsoureas N, Hope RF, Haddow MF, Owen GR. Important Steric Effects Resulting from the Additional Substituent at Boron within Scorpionate Complexes Containing κ
3
‐
NNH
Coordination Modes. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100857] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Nikolaos Tsoureas
- The School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Rebecca F. Hope
- The School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Mairi F. Haddow
- The School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Gareth R. Owen
- The School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
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17
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Dyson G, Zech A, Rawe BW, Haddow MF, Hamilton A, Owen GR. Scorpionate Ligands Based on 2-Mercaptopyridine: A Ligand with a Greater Propensity To Sting? Organometallics 2011. [DOI: 10.1021/om200694r] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gavin Dyson
- The School of Chemistry, University of Bristol, Bristol BS8 1TS,
U.K
| | - Alexander Zech
- The School of Chemistry, University of Bristol, Bristol BS8 1TS,
U.K
| | - Benjamin W. Rawe
- The School of Chemistry, University of Bristol, Bristol BS8 1TS,
U.K
| | - Mairi F. Haddow
- The School of Chemistry, University of Bristol, Bristol BS8 1TS,
U.K
| | | | - Gareth R. Owen
- The School of Chemistry, University of Bristol, Bristol BS8 1TS,
U.K
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18
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Emslie DJH, Cowie BE, Kolpin KB. Acyclic boron-containing π-ligand complexes: η2- and η3-coordination modes. Dalton Trans 2011; 41:1101-17. [PMID: 21983808 DOI: 10.1039/c1dt11271f] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cyclic boron-containing π-ligands such as boratabenzenes and borollides are well established, in particular as supporting ligands. By contrast, the chemistry of acyclic boron-containing π-ligands has remained relatively unexplored, presumably in part due to the higher reactivity of acyclic π-ligands relative to cyclic analogues. This perspective is focused on the synthesis, structures and reactivity of isolated transition metal complexes bearing η(n)-coordinated (n = 2 or 3) acyclic boron-containing ligands. Both monometallic and multimetallic compounds are included, and are discussed with an emphasis on metal-ligand and intraligand bonding and parallels with hydrocarbon π-ligand complexes.
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Affiliation(s)
- David J H Emslie
- Department of Chemistry, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4M1, Canada.
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