1
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Watson BT, Dias HVR. Going for gold - the chemistry of structurally authenticated gold(I)-ethylene complexes. Chem Commun (Camb) 2024; 60:4872-4889. [PMID: 38567496 DOI: 10.1039/d4cc00676c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Gold coordination chemistry and catalysis involving unsaturated hydrocarbons such as olefins have experienced a remarkable growth during the last few decades. Despite the importance, isolable and well-characterized molecules with ethylene, the simplest and the most widely produced olefin, on gold are still limited. This review aims to cover features of, and strategies utilized to stabilize, gold-ethylene complexes and their diverse use in chemical transformations and homogeneous catalytic processes. Isolable and well-authenticated gold-ethylene complexes are important not only for structural, spectroscopic, and bonding studies but also as models for likely intermediates in gold mediated reactions of alkenes and gold-alkene species observed in the gas phase. There has also been development on AuI/III catalytic cycles. Nitrogen based ligands have been the most widely utilized ligand supports thus far for the successful stabilization of gold-ethylene adducts. Gold has a bright future in olefin chemistry and with ethylene.
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Affiliation(s)
- Brandon T Watson
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, USA.
| | - H V Rasika Dias
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, USA.
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2
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McQuade J, Jäkle F. Tris(pyridyl)borates: an emergent class of versatile and robust polydentate ligands for catalysis and materials applications. Dalton Trans 2023; 52:10278-10285. [PMID: 37462446 DOI: 10.1039/d3dt01665j] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
Tridentate ligands that incorporate pyridyl rather than pyrazolyl groups are emerging as an attractive class of "scorpionate"-type ligands with enhanced electron donation, increased stability, and divergent geometry at the metal centre relative to tris(pyrazolyl)borates originally introduced by Trofimenko. Following our initial reports, the tris(pyridyl)borate (Tpyb) ligand architecture has been adopted by several research groups in pursuit of functional metal complexes that offer new opportunities in catalysis and materials science. While earlier work had been focused on symmetric octahedral complexes, ML2, which are advantageous as highly robust building blocks in materials sciences, recently introduced new ligand designs provide access to heteroleptic metal complexes with vacant sites that lend themselves to applications in catalysis. Signficant progress has also been made in the post-complexation functionalization of these ligands via electrophilic and nucleophilic substitution reactions at the boron centres, opening up new routes for integration of Tpyb complexes with diverse functional materials while also raising interesting mechanistic questions.
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Affiliation(s)
- James McQuade
- Department of Chemistry, Rutgers University Newark, 73 Warren Street, Newark, New Jersey 07102, USA.
| | - Frieder Jäkle
- Department of Chemistry, Rutgers University Newark, 73 Warren Street, Newark, New Jersey 07102, USA.
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3
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García-Romero Á, Waters JE, Jethwa RB, Bond AD, Colebatch AL, García-Rodríguez R, Wright DS. Highly Adaptive Nature of Group 15 Tris(quinolyl) Ligands─Studies with Coinage Metals. Inorg Chem 2023; 62:4625-4636. [PMID: 36883367 DOI: 10.1021/acs.inorgchem.3c00057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
The substitution of heavier, more metallic atoms into classical organic ligand frameworks provides an important strategy for tuning ligand properties, such as ligand bite and donor character, and is the basis for the emerging area of main-group supramolecular chemistry. In this paper, we explore two new ligands [E(2-Me-8-qy)3] [E = Sb (1), Bi (2); qy = quinolyl], allowing a fundamental comparison of their coordination behavior with classical tris(2-pyridyl) ligands of the type [E'(2-py)3] (E = a range of bridgehead atoms and groups, py = pyridyl). A range of new coordination modes to Cu+, Ag+, and Au+ is seen for 1 and 2, in the absence of steric constraints at the bridgehead and with their more remote N-donor atoms. A particular feature is the adaptive nature of these new ligands, with the ability to adjust coordination mode in response to the hard-soft character of coordinated metal ions, influenced also by the character of the bridgehead atom (Sb or Bi). These features can be seen in a comparison between [Cu2{Sb(2-Me-8-qy)3}2](PF6)2 (1·CuPF6) and [Cu{Bi(2-Me-8-qy)3}](PF6) (2·CuPF6), the first containing a dimeric cation in which 1 adopts an unprecedented intramolecular N,N,Sb-coordination mode while in the second, 2 adopts an unusual N,N,(π-)C coordination mode. In contrast, the previously reported analogous ligands [E(6-Me-2-py)3] (E = Sb, Bi; 2-py = 2-pyridyl) show a tris-chelating mode in their complexes with CuPF6, which is typical for the extensive tris(2-pyridyl) family with a range of metals. The greater polarity of the Bi-C bond in 2 results in ligand transfer reactions with Au(I). Although this reactivity is not in itself unusual, the characterization of several products by single-crystal X-ray diffraction provides snapshots of the ligand transfer reaction involved, with one of the products (the bimetallic complex [(BiCl){ClAu2(2-Me-8-qy)3}] (8)) containing a Au2Bi core in which the shortest Au → Bi donor-acceptor bond to date is observed.
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Affiliation(s)
- Álvaro García-Romero
- GIR MIOMeT-IU Cinquima-Química Inorgánica Facultad de Ciencias, Universidad de Valladolid, Campus Miguel Delibes, Valladolid 47011, Spain
| | - Jessica E Waters
- The Francis Crick Institute, 1 Midland Road, London NW1 1AT, U.K
| | - Rajesh B Jethwa
- Institute of Science and Technology Austria (ISTA), Am Campus 1, Klosterneuburg 3400, Austria
| | - Andrew D Bond
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Annie L Colebatch
- Research School of Chemistry, The Australian National University, Canberra, ACT 2601, Australia
| | - Raúl García-Rodríguez
- GIR MIOMeT-IU Cinquima-Química Inorgánica Facultad de Ciencias, Universidad de Valladolid, Campus Miguel Delibes, Valladolid 47011, Spain
| | - Dominic S Wright
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
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4
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Watson BT, Vanga M, Noonikara-Poyil A, Muñoz-Castro A, Dias HVR. Copper(I), Silver(I), and Gold(I) Ethylene Complexes of Fluorinated and Boron-Methylated Bis- and Tris(pyridyl)borate Chelators. Inorg Chem 2023; 62:1636-1648. [PMID: 36657123 DOI: 10.1021/acs.inorgchem.2c04009] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Bis- and tris-pyridyl borate ligands containing pyridyl donor arms, a methylated boron cap, and a fluorine-lined coordination pocket have been prepared and utilized in coinage metal chemistry. The tris(pyridyl)borate ligand has been synthesized using a convenient boron source, [NBu4][MeBF3]. These N-based ligands permitted the isolation of group 11 metal-ethylene complexes [MeB(6-(CF3)Py)3]M(C2H4) and [Me2B(6-(CF3)Py)2]M(C2H4) (M = Cu, Ag, Au). The gold complexes display the largest coordination-induced upfield shifts of the ethylene 13C resonance relative to that of the free ethylene in their NMR spectra, while the silver complexes show the smallest shift. Solid-state structures of five of these metal-ethylene complexes as well as the related free ligands were established by X-ray crystallography. Surprisingly, all three [MeB(6-(CF3)Py)3]M(C2H4) adopt the rare κ2 coordination mode rather than the typical κ3 coordination mode of facial capping tridentate ligands. Computational analyses indicate that κ2 coordination mode is favored over the κ3-mode in these coinage metal-ethylene complexes and point to the effects CF3-substituents have on κ2/κ3-energy difference. The M-C and M-N bond distances of [MeB(6-(CF3)Py)3]M(C2H4) follow the trend expected based on covalent radii of M(I) ions. The calculated ethylene-M interaction energy of κ2-[MeB(6-(CF3)Py)3]M(C2H4) indicated that the gold(I) forms the strongest interaction with ethylene. A comparison to the related poly(pyrazolyl)borates is also presented.
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Affiliation(s)
- Brandon T Watson
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, United States
| | - Mukundam Vanga
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, United States
| | - Anurag Noonikara-Poyil
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, United States
| | - Alvaro Muñoz-Castro
- Facultad de Ingeniería, Arquitectura y Diseño, Universidad San Sebastián, Bellavista 7, Santiago 8420524, Chile
| | - H V Rasika Dias
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, United States
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5
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Qian J, Comito RJ. Ethylene Polymerization with Thermally Robust Vanadium(III) Tris(2-pyridyl)borate Complexes. Organometallics 2023. [DOI: 10.1021/acs.organomet.2c00568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Jin Qian
- University of Houston, Department of Chemistry, 3585 Cullen Boulevard, Houston, Texas 77204-5003, United States
| | - Robert J. Comito
- University of Houston, Department of Chemistry, 3585 Cullen Boulevard, Houston, Texas 77204-5003, United States
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6
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Qian J, Comito RJ. Site-Isolated Main-Group Tris(2-pyridyl)borate Complexes by Pyridine Substitution and Their Ring-Opening Polymerization Catalysis. Inorg Chem 2022; 61:10852-10862. [PMID: 35776081 DOI: 10.1021/acs.inorgchem.2c01289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Tris(2-pyridyl)borates are an emerging class of scorpionate ligands, distinguished as exceptionally robust and electron-donating. However, the rapid formation of inert homoleptic complexes with divalent metals has so far limited their catalytic utility. We report site-isolating tris(2-pyridyl)borate ligands, bearing isopropyl, tert-butyl, and mesityl substituents at the pyridine 6-position to suppress the formation of inert homoleptic complexes. These ligands form the first 1:1 complexes between tris(2-pyridyl)borates and Mg2+, Zn2+, or Ca2+, with isopropyl-substituted TpyiPrH showing the most generality. Single-crystal X-ray diffraction analysis of the resulting complexes and comparison to density functional theory (DFT) models showed geometric distortions driven by steric repulsion between the pyridine 6-substituents and the hexamethyldisilazide (HMDS-, -N(SiMe3)2) anion. We show that this steric profile is a feature of the six-membered pyridine ring and contrasts with more established tris(pyrazolyl)borate and tris(imidazoline)borate scorpionate complexes. TpyiPrMg(HMDS) (1) and its zinc analogue are moderately active for the controlled polymerization of l-lactide, ε-caprolactone, and trimethylene carbonate. Furthermore, 1 gives controlled polymerization under more demanding melt-phase polymerization conditions at 100 °C, and block copolymerization of ε-caprolactone and trimethylene carbonate. These results will enable useful catalysis and coordination chemistry studies with tris(2-pyridyl)borates, and characterizes their structural complementarity to more familiar scorpionate ligands.
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Affiliation(s)
- Jin Qian
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003, United States
| | - Robert J Comito
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003, United States
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7
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Vanga M, Noonikara-Poyil A, Wu J, Dias HVR. Carbonyl and Isocyanide Complexes of Copper and Silver Supported by Fluorinated Poly(pyridyl)borates. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Mukundam Vanga
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, United States
| | - Anurag Noonikara-Poyil
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, United States
| | - Jiang Wu
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, United States
| | - H. V. Rasika Dias
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, United States
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8
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Vanga M, Muñoz-Castro A, Dias HVR. Fluorinated tris(pyridyl)borate ligand support on coinage metals. Dalton Trans 2022; 51:1308-1312. [PMID: 35015008 DOI: 10.1039/d1dt04136c] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A useful ligand involving three pyridyl donor arms and fluorocarbon substituents surrounding the coordination pocket has been assembled and utilized in coinage metal chemistry. This tris(pyridyl)borate serves as an excellent ligand support for the stabilization of ethylene complexes of copper, silver and gold.
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Affiliation(s)
- Mukundam Vanga
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, USA.
| | - Alvaro Muñoz-Castro
- Grupo de Química Inorgánica y Materiales Moleculares, Facultad de Ingeniería, Universidad Autonoma de Chile, El Llano Subercaseaux 2801, Santiago, Chile
| | - H V Rasika Dias
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, USA.
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9
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Goura J, McQuade J, Shimoyama D, Lalancette RA, Sheridan JB, Jäkle F. Electrophilic and nucleophilic displacement reactions at the bridgehead borons of tris(pyridyl)borate scorpionate complexes. Chem Commun (Camb) 2022; 58:977-980. [PMID: 34979540 DOI: 10.1039/d1cc06181j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Although a wide variety of boron-based "scorpionate" ligands have been implemented, a modular route that offers facile access to different substitution patterns at boron has yet to be developed. Here, we demonstrate new reactivity patterns at the bridgehead positions of a ruthenium tris(pyrid-2-yl)borate complex that allow for facile tuning of steric and electronic properties.
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Affiliation(s)
- Joydeb Goura
- Department of Chemistry, Rutgers University-Newark, Newark, NJ 07102, USA.
| | - James McQuade
- Department of Chemistry, Rutgers University-Newark, Newark, NJ 07102, USA.
| | - Daisuke Shimoyama
- Department of Chemistry, Rutgers University-Newark, Newark, NJ 07102, USA.
| | - Roger A Lalancette
- Department of Chemistry, Rutgers University-Newark, Newark, NJ 07102, USA.
| | - John B Sheridan
- Department of Chemistry, Rutgers University-Newark, Newark, NJ 07102, USA.
| | - Frieder Jäkle
- Department of Chemistry, Rutgers University-Newark, Newark, NJ 07102, USA.
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10
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Fujiwara Y, Takayama T, Nakazawa J, Okamura M, Hikichi S. Development of a novel scorpionate ligand with 6-methylpyridine and comparison of structural and electronic properties of nickel(II) complexes with related tris(azolyl)borates. Dalton Trans 2022; 51:10338-10342. [DOI: 10.1039/d2dt01548j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel anionic tridentate borate ligand with 6-methlpyridyl donor, TpyMe, has been synthesized. Comparison of molecular structures and reactivities of nickel(II)-bromido complexes with tris(azolyl)borate ligands composed of pyridyl, pyrazolyl, or...
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11
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García-Romero Á, Martín-Álvarez JM, Miguel D, Wright DS, Álvarez CM, García-Rodríguez R. Cation- and Anion-Mediated Supramolecular Assembly of Bismuth and Antimony Tris(3-pyridyl) Complexes. Inorg Chem 2021; 60:19206-19218. [PMID: 34882394 PMCID: PMC8693195 DOI: 10.1021/acs.inorgchem.1c03004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
The use of antimony
and bismuth in supramolecular chemistry has
been largely overlooked in comparison to the lighter elements of Group
15, and the coordination chemistry of the tripodal ligands [Sb(3-py)3] and [Bi(3-py)3] (L) containing the heaviest p-block
element bridgehead atoms has been unexplored. We show that these ligands
form a common hybrid metal–organic framework (MOF) structure
with Cu(I) and Ag(I) (M) salts of weakly coordinating anions (PF6–, SbF6–, and
OTf–), composed of a cationic substructure of rhombic
cage (M)4(L)4 units linked by Sb/Bi–M
bonding. The greater Lewis acidity of Bi compared to Sb can, however,
allows anion···Bi interactions to overcome Bi–metal
bonding in the case of BF4–, leading
to collapse of the MOF structure (which is also seen where harder
metals like Li+ are employed). This study therefore provides
insight into the way in which the electronic effects of the bridgehead
atom in these ligand systems can impact their supramolecular chemistry. The Lewis acidity of the Group 15 bridgehead
atoms (E =
Sb vs Bi) proves to be a decisive structural directing factor in the
coordination of tris(3-pyridyl) ligands E(3-py)3, being
responsible for promoting or disfavoring E−metal or E···anion
interactions.
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Affiliation(s)
- Álvaro García-Romero
- GIR MIOMeT-IU, Cinquima, Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, Campus Miguel Delibes, 47011 Valladolid, Spain
| | - Jose M Martín-Álvarez
- GIR MIOMeT-IU, Cinquima, Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, Campus Miguel Delibes, 47011 Valladolid, Spain
| | - Daniel Miguel
- GIR MIOMeT-IU, Cinquima, Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, Campus Miguel Delibes, 47011 Valladolid, Spain
| | - Dominic S Wright
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Celedonio M Álvarez
- GIR MIOMeT-IU, Cinquima, Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, Campus Miguel Delibes, 47011 Valladolid, Spain
| | - Raúl García-Rodríguez
- GIR MIOMeT-IU, Cinquima, Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, Campus Miguel Delibes, 47011 Valladolid, Spain
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12
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Anga S, Karmakar H, Panda TK, Chandrasekhar V. Alkali metal complexes of an unsymmetrical imino–phosphanamidinate (N-P-N) ligand. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.122091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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13
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García-Romero Á, Martín-Álvarez JM, Colebatch AL, Plajer AJ, Miguel D, Álvarez CM, García-Rodríguez R. Synthesis of tris(3-pyridyl)aluminate ligand and its unexpected stability against hydrolysis: revealing cooperativity effects in heterobimetallic pyridyl aluminates. Dalton Trans 2021; 50:13059-13065. [PMID: 34581366 DOI: 10.1039/d1dt02351a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
We report the elusive metallic anion [EtAl(3-py)3]- (3-py = 3-pyridyl) (1), the first member of the anionic tris(3-pyridyl) family. Unexpectedly, the lithium complex 1Li shows substantial protic stability against water and alcohols, unlike related tris(2-pyridyl)aluminate analogues. This stability appears to be related to the inability of the [EtAl(3-py)3]- anion to chelate Li+, which precludes a decomposition pathway involving Li/Al cooperativity.
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Affiliation(s)
- Álvaro García-Romero
- GIR MIOMeT-IU Cinquima-Química Inorgánica Facultad de Ciencias, Universidad de Valladolid; Campus Miguel Delibes, 47011 Valladolid, Spain.
| | - Jose M Martín-Álvarez
- GIR MIOMeT-IU Cinquima-Química Inorgánica Facultad de Ciencias, Universidad de Valladolid; Campus Miguel Delibes, 47011 Valladolid, Spain.
| | - Annie L Colebatch
- Chemistry Department. Cambridge University, Lensfield Road, Cambridge CB2 1EW, UK.,Research School of Chemistry. Australian National University, Canberra, ACT, 2601, Australia
| | - Alex J Plajer
- Chemical Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Daniel Miguel
- GIR MIOMeT-IU Cinquima-Química Inorgánica Facultad de Ciencias, Universidad de Valladolid; Campus Miguel Delibes, 47011 Valladolid, Spain.
| | - Celedonio M Álvarez
- GIR MIOMeT-IU Cinquima-Química Inorgánica Facultad de Ciencias, Universidad de Valladolid; Campus Miguel Delibes, 47011 Valladolid, Spain.
| | - Raúl García-Rodríguez
- GIR MIOMeT-IU Cinquima-Química Inorgánica Facultad de Ciencias, Universidad de Valladolid; Campus Miguel Delibes, 47011 Valladolid, Spain.
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14
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Waters JE, Berger G, Peel AJ, García-Rodríguez R, Bond AD, Wright DS. Uncovering the Hidden Landscape of Tris(4-pyridyl) Ligands: Topological Complexity Derived from the Bridgehead. Chemistry 2021; 27:12036-12040. [PMID: 34128570 DOI: 10.1002/chem.202101291] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Indexed: 11/09/2022]
Abstract
Supramolecular main group chemistry is a developing field which parallels the conventional domain of metallo-organic chemistry. Little explored building blocks in this area are main group metal-based ligands which have the appropriate donor symmetry to build desired molecular or extended arrangements. Tris(pyridyl) main group ligands (E(py)3 , E=main group metal) are potentially highly versatile building blocks since shifting the N-donor arms from the 2- to the 3-positions and 4-positions provides a very simple way of changing the ligand character from mononuclear/chelating to multidentate/metal-bridging. Here, the coordination behaviour of the first main group metal tris(4-pyridyl) ligands, E(4-py)3 (E=Sb, Bi, Ph-Sn) is explored, as well as their ability to build metal-organic frameworks (MOFs). The complicated topology of these MOFs shows a marked influence on the counter anion and on the ability of the E(4-py)3 ligands to switch coordination mode, depending on the steric and donor character of the bridgehead. This structure-directing influence of the bridgehead provides a potential building strategy for future molecular and MOF design in this area.
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Affiliation(s)
- Jessica E Waters
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Georg Berger
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.,Anorganisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Andrew J Peel
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Raúl García-Rodríguez
- GIR MIOMeT, IU CINQUIMA/Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, E-47011, Valladolid, Spain
| | - Andrew D Bond
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Dominic S Wright
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
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15
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Qian J, Comito RJ. A Robust Vanadium(V) Tris(2-pyridyl)borate Catalyst for Long-Lived High-Temperature Ethylene Polymerization. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00334] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jin Qian
- Department of Chemistry, University of Houston, 3585 Cullen Boulevard, Room 112, Houston, Texas 77204-5003, United States
| | - Robert J. Comito
- Department of Chemistry, University of Houston, 3585 Cullen Boulevard, Room 112, Houston, Texas 77204-5003, United States
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16
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Peel AJ, Waters JE, Plajer AJ, García-Rodríguez R, Wright DS. Recent advances in the synthesis and application of tris(pyridyl) ligands containing metallic and semimetallic p-block bridgeheads. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2021. [DOI: 10.1016/bs.adomc.2021.01.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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17
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García-Romero Á, Plajer AJ, Miguel D, Wright DS, Bond AD, Álvarez CM, García-Rodríguez R. Tris(2-pyridyl) Bismuthines: Coordination Chemistry, Reactivity, and Anion-Triggered Pyridyl Coupling. Inorg Chem 2020; 59:7103-7116. [DOI: 10.1021/acs.inorgchem.0c00579] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Álvaro García-Romero
- GIR MIOMeT-IU, Cinquima, Quı́mica Inorgánica, Facultad de Ciencias, Universidad de Valladolid, Campus Miguel Delibes, 47011 Valladolid, Spain
| | - Alex J. Plajer
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Daniel Miguel
- GIR MIOMeT-IU, Cinquima, Quı́mica Inorgánica, Facultad de Ciencias, Universidad de Valladolid, Campus Miguel Delibes, 47011 Valladolid, Spain
| | - Dominic S. Wright
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Andrew D. Bond
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Celedonio M. Álvarez
- GIR MIOMeT-IU, Cinquima, Quı́mica Inorgánica, Facultad de Ciencias, Universidad de Valladolid, Campus Miguel Delibes, 47011 Valladolid, Spain
| | - Raúl García-Rodríguez
- GIR MIOMeT-IU, Cinquima, Quı́mica Inorgánica, Facultad de Ciencias, Universidad de Valladolid, Campus Miguel Delibes, 47011 Valladolid, Spain
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18
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Plajer AJ, Kopf S, Colebatch AL, Bond AD, Wright DS, García-Rodríguez R. Deprotonation, insertion and isomerisation in the post-functionalisation of tris-pyridyl aluminates. Dalton Trans 2019; 48:5692-5697. [DOI: 10.1039/c9dt00869a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reactions of aluminate anions [EtAl(6-R-2-py)3]−(6-R-2-py = 6-R-2-pyridyl, R = Me or Br) with aldehydes (RCHO) or carboxylic acids (RCO2H) reveal how these species can be used to sense chirality and show a new aspect of isomerism in this area.
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Affiliation(s)
- Alex J. Plajer
- Chemistry Department. Cambridge University
- Cambridge CB2 1EW
- UK
| | - Sara Kopf
- Chemistry Department. Cambridge University
- Cambridge CB2 1EW
- UK
| | | | - Andrew D. Bond
- Chemistry Department. Cambridge University
- Cambridge CB2 1EW
- UK
| | | | - Raúl García-Rodríguez
- GIR MIOMeT-IU Cinquima-Química Inorgánica Facultad de Ciencias
- Universidad de Valladolid
- Campus Miguel
- Delibes
- 47011 Valladolid
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19
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García‐Romero Á, Plajer AJ, Álvarez‐Miguel L, Bond AD, Wright DS, García‐Rodríguez R. Postfunctionalization of Tris(pyridyl) Aluminate Ligands: Chirality, Coordination, and Supramolecular Chemistry. Chemistry 2018; 24:17019-17026. [DOI: 10.1002/chem.201803342] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Revised: 08/08/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Álvaro García‐Romero
- GIR MIOMeT-IU Cinquima-Química Inorgánica Facultad de CienciasUniversidad de Valladolid, Campus Miguel Delibes 47011 Valladolid Spain
| | - Alex J. Plajer
- Department of ChemistryUniversity of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Lucía Álvarez‐Miguel
- GIR MIOMeT-IU Cinquima-Química Inorgánica Facultad de CienciasUniversidad de Valladolid, Campus Miguel Delibes 47011 Valladolid Spain
| | - Andrew D. Bond
- Department of ChemistryUniversity of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Dominic S. Wright
- Department of ChemistryUniversity of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Raúl García‐Rodríguez
- GIR MIOMeT-IU Cinquima-Química Inorgánica Facultad de CienciasUniversidad de Valladolid, Campus Miguel Delibes 47011 Valladolid Spain
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20
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Plajer AJ, Colebatch AL, Enders M, García-Romero Á, Bond AD, García-Rodríguez R, Wright DS. The coordination chemistry of the neutral tris-2-pyridyl silicon ligand [PhSi(6-Me-2-py)3]. Dalton Trans 2018; 47:7036-7043. [DOI: 10.1039/c8dt01332b] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The first transition metal complexes of Si(iv) tris(2-pyridyl) ligands are reported.
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Affiliation(s)
- Alex J. Plajer
- Chemistry Department. Cambridge University
- Cambridge CB2 1EW
- UK
| | | | - Markus Enders
- Anorganisch-Chemisches Institut
- Heidelberg University
- 69120 Heidelberg
- Germany
| | - Álvaro García-Romero
- GIR MIOMeT-IU Cinquima-Química Inorgánica
- Facultad de Ciencias
- Campus Miguel
- Delibes
- Universidad de Valladolid
| | - Andrew D. Bond
- Chemistry Department. Cambridge University
- Cambridge CB2 1EW
- UK
| | - Raúl García-Rodríguez
- GIR MIOMeT-IU Cinquima-Química Inorgánica
- Facultad de Ciencias
- Campus Miguel
- Delibes
- Universidad de Valladolid
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21
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Barbon SM, Buddingh JV, Maar RR, Gilroy JB. Boron Difluoride Adducts of a Flexidentate Pyridine-Substituted Formazanate Ligand: Property Modulation via Protonation and Coordination Chemistry. Inorg Chem 2017; 56:12003-12011. [DOI: 10.1021/acs.inorgchem.7b01984] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Stephanie M. Barbon
- Department of Chemistry and the Centre
for Advanced Materials and Biomaterials Research, The University of Western Ontario, 1151 Richmond Street North, London, Ontario N6A 5B7, Canada
| | - Jasmine V. Buddingh
- Department of Chemistry and the Centre
for Advanced Materials and Biomaterials Research, The University of Western Ontario, 1151 Richmond Street North, London, Ontario N6A 5B7, Canada
| | - Ryan R. Maar
- Department of Chemistry and the Centre
for Advanced Materials and Biomaterials Research, The University of Western Ontario, 1151 Richmond Street North, London, Ontario N6A 5B7, Canada
| | - Joe B. Gilroy
- Department of Chemistry and the Centre
for Advanced Materials and Biomaterials Research, The University of Western Ontario, 1151 Richmond Street North, London, Ontario N6A 5B7, Canada
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22
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Norouzi-Arasi H, Pal AK, Nag S, Chartrand D, Hanan GS. Synthesis and photophysical properties of C 3-symmetric tris(pyridyl)truxene scaffolds of Ru(ii) and Re(i). Chem Commun (Camb) 2016; 52:12159-12162. [PMID: 27711311 DOI: 10.1039/c6cc06496e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Facial Ru(ii)- and Re(i)-complexes of a novel face-capping tris(pyridyl)truxene ligand were synthesised and characterised by various analytical techniques including single crystal XRD. The Ru(ii) complex exhibits unusual green phosphorescence with a long excited-state lifetime.
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Affiliation(s)
- Hassan Norouzi-Arasi
- Département de Chimie, Université de Montréal, Montréal, Québec H3T 1J4, Canada.
| | - Amlan K Pal
- Département de Chimie, Université de Montréal, Montréal, Québec H3T 1J4, Canada.
| | - Samik Nag
- Département de Chimie, Université de Montréal, Montréal, Québec H3T 1J4, Canada. and Department of Chemistry, Acharya Prafulla Chandra Roy Government College, Himachal Bihar, Matigara, Silguri-734010, West Bengal, India
| | - Daniel Chartrand
- Département de Chimie, Université de Montréal, Montréal, Québec H3T 1J4, Canada.
| | - Garry S Hanan
- Département de Chimie, Université de Montréal, Montréal, Québec H3T 1J4, Canada.
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23
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Pawar GM, Sheridan JB, Jäkle F. Pyridylborates as a New Type of Robust Scorpionate Ligand: From Metal Complexes to Polymeric Materials. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501373] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Gajanan M. Pawar
- Department of Chemistry; Rutgers University Newark; 73 Warren Street 07102 Newark New Jersey United States
| | - John B. Sheridan
- Department of Chemistry; Rutgers University Newark; 73 Warren Street 07102 Newark New Jersey United States
| | - Frieder Jäkle
- Department of Chemistry; Rutgers University Newark; 73 Warren Street 07102 Newark New Jersey United States
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