1
|
Li H, Wang Y, Zhou Y, Yao Z, Huang W, Gao T, Yan P. Asymmetric induction in quadruple-stranded europium(III) helicates and circularly polarized luminescence. Dalton Trans 2022; 51:10973-10982. [DOI: 10.1039/d2dt01379g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chiral supramolecular lanthanide-helicates are regarded as promising chiroptical materials due to their combination of ground and excited state chirality and special luminescence property from Ln3+, named as circularly polarized luminescence...
Collapse
|
2
|
Zhou XQ, Carbo-Bague I, Siegler MA, Hilgendorf J, Basu U, Ott I, Liu R, Zhang L, Ramu V, IJzerman AP, Bonnet S. Rollover Cyclometalation vs Nitrogen Coordination in Tetrapyridyl Anticancer Gold(III) Complexes: Effect on Protein Interaction and Toxicity. JACS AU 2021; 1:380-395. [PMID: 34056633 PMCID: PMC8154207 DOI: 10.1021/jacsau.0c00104] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Indexed: 05/05/2023]
Abstract
In this work, a pair of gold(III) complexes derived from the analogous tetrapyridyl ligands H2biqbpy1 and H2biqbpy2 was prepared: the rollover, bis-cyclometalated [Au(biqbpy1)Cl ([1]Cl) and its isomer [Au(biqbpy2)Cl ([2]Cl). In [1]+, two pyridyl rings coordinate to the metal via a Au-C bond (C∧N∧N∧C coordination) and the two noncoordinated amine bridges of the ligand remain protonated, while in [2]+ all four pyridyl rings of the ligand coordinate to the metal via a Au-N bond (N∧N∧N∧N coordination), but both amine bridges are deprotonated. As a result, both complexes are monocationic, which allowed comparison of the sole effect of cyclometalation on the chemistry, protein interaction, and anticancer properties of the gold(III) compounds. Due to their identical monocationic charge and similar molecular shape, both complexes [1]Cl and [2]Cl displaced reference radioligand [3H]dofetilide equally well from cell membranes expressing the Kv11.1 (hERG) potassium channel, and more so than the tetrapyridyl ligands H2biqbpy1 and H2biqbpy2. By contrast, cyclometalation rendered [1]Cl coordinatively stable in the presence of biological thiols, while [2]Cl was reduced by a millimolar concentration of glutathione into metastable Au(I) species releasing the free ligand H2biqbpy2 and TrxR-inhibiting Au+ ions. The redox stability of [1]Cl dramatically decreased its thioredoxin reductase (TrxR) inhibition properties, compared to [2]Cl. On the other hand, unlike [2]Cl, [1]Cl aggregated into nanoparticles in FCS-containing medium, which resulted in much more efficient gold cellular uptake. [1]Cl had much more selective anticancer properties than [2]Cl and cisplatin, as it was almost 10 times more cytotoxic to human cancer cells (A549, A431, A375, and MCF7) than to noncancerous cells (MRC5). Mechanistic studies highlight the strikingly different mode of action of the two compounds: while for [1]Cl high gold cellular uptake, nuclear DNA damage, and interaction with hERG may contribute to cell killing, for [2]Cl extracellular reduction released TrxR-inhibiting Au+ ions that were taken up in minute amounts in the cytosol, and a toxic tetrapyridyl ligand also capable of binding to hERG. These results demonstrate that bis-cyclometalation is an appealing method to improve the redox stability of Au(III) compounds and to develop gold-based cytotoxic compounds that do not rely on TrxR inhibition to kill cancer cells.
Collapse
Affiliation(s)
- Xue-Quan Zhou
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
| | - Imma Carbo-Bague
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
- Department
of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia V5A 1S6, Canada
| | - Maxime A. Siegler
- Department
of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Jonathan Hilgendorf
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
| | - Uttara Basu
- Institute
of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstrasse 55, 38106 Braunschweig, Germany
| | - Ingo Ott
- Institute
of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstrasse 55, 38106 Braunschweig, Germany
| | - Rongfang Liu
- Division
of Drug Discovery & Safety, Leiden Academic Centre for Drug Research, Leiden University, 2333 CC Leiden, The Netherlands
| | - Liyan Zhang
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
| | - Vadde Ramu
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
| | - Adriaan P. IJzerman
- Division
of Drug Discovery & Safety, Leiden Academic Centre for Drug Research, Leiden University, 2333 CC Leiden, The Netherlands
| | - Sylvestre Bonnet
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
| |
Collapse
|
3
|
Hou YJ, Wu K, Wei ZW, Li K, Lu YL, Zhu CY, Wang JS, Pan M, Jiang JJ, Li GQ, Su CY. Design and Enantioresolution of Homochiral Fe(II)–Pd(II) Coordination Cages from Stereolabile Metalloligands: Stereochemical Stability and Enantioselective Separation. J Am Chem Soc 2018; 140:18183-18191. [DOI: 10.1021/jacs.8b11152] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Ya-Jun Hou
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Kai Wu
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Zhang-Wen Wei
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Kang Li
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Yu-Lin Lu
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Cheng-Yi Zhu
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Jing-Si Wang
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Mei Pan
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Ji-Jun Jiang
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Guang-Qin Li
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Cheng-Yong Su
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| |
Collapse
|
4
|
Naim A, Bouhadja Y, Cortijo M, Duverger-Nédellec E, Flack HD, Freysz E, Guionneau P, Iazzolino A, Ould Hamouda A, Rosa P, Stefańczyk O, Valentín-Pérez Á, Zeggar M. Design and Study of Structural Linear and Nonlinear Optical Properties of Chiral [Fe(phen)3]2+ Complexes. Inorg Chem 2018; 57:14501-14512. [DOI: 10.1021/acs.inorgchem.8b01089] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Ahmad Naim
- ICMCB, CNRS, Université de Bordeaux, UMR 5026, F-33600 Pessac, France
| | - Yacine Bouhadja
- Department of Chemistry, University of Annaba, BP 12-23200 Sidi-Ammar, Algérie
| | - Miguel Cortijo
- ICMCB, CNRS, Université de Bordeaux, UMR 5026, F-33600 Pessac, France
- CRPP, CNRS, Université de Bordeaux, UMR 5031, F-33600 Pessac, France
| | | | - Howard D. Flack
- Chimie Minérale, Analytique et Appliquée, Sciences II, Université de Genève, 30, Quai Ernest-Ansermet CH-1211 Geneva Switzerland
| | - Eric Freysz
- LOMA, UMR CNRS 5798, 351 Cours de la Libération, FR-33405 Talence Cedex, France
| | | | - Antonio Iazzolino
- LOMA, UMR CNRS 5798, 351 Cours de la Libération, FR-33405 Talence Cedex, France
| | - Amine Ould Hamouda
- LOMA, UMR CNRS 5798, 351 Cours de la Libération, FR-33405 Talence Cedex, France
| | - Patrick Rosa
- ICMCB, CNRS, Université de Bordeaux, UMR 5026, F-33600 Pessac, France
| | - Olaf Stefańczyk
- ICMCB, CNRS, Université de Bordeaux, UMR 5026, F-33600 Pessac, France
| | - Ángela Valentín-Pérez
- ICMCB, CNRS, Université de Bordeaux, UMR 5026, F-33600 Pessac, France
- CRPP, CNRS, Université de Bordeaux, UMR 5031, F-33600 Pessac, France
| | - Mehdi Zeggar
- ICMCB, CNRS, Université de Bordeaux, UMR 5026, F-33600 Pessac, France
- Department of Chemistry, University of Annaba, BP 12-23200 Sidi-Ammar, Algérie
| |
Collapse
|
5
|
Seo MS, Kim H. 1H NMR Chiral Analysis of Charged Molecules via Ion Pairing with Aluminum Complexes. J Am Chem Soc 2015; 137:14190-5. [DOI: 10.1021/jacs.5b09555] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Min-Seob Seo
- Department
of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
| | - Hyunwoo Kim
- Department
of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center
for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Korea
| |
Collapse
|
6
|
Reddy G. N. M, Ballesteros-Garrido R, Lacour J, Caldarelli S. Determination of Labile Chiral Supramolecular Ion Pairs by Chromatographic NMR Spectroscopy. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209616] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
7
|
Reddy G. N. M, Ballesteros-Garrido R, Lacour J, Caldarelli S. Determination of Labile Chiral Supramolecular Ion Pairs by Chromatographic NMR Spectroscopy. Angew Chem Int Ed Engl 2013; 52:3255-8. [DOI: 10.1002/anie.201209616] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Indexed: 11/07/2022]
|
8
|
Seo MS, Kim K, Kim H. Controlling helical chirality of cobalt complexes by chirality transfer from vicinal diamines. Chem Commun (Camb) 2013; 49:11623-5. [DOI: 10.1039/c3cc46887a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
9
|
Teplý F. Photoredox catalysis by [Ru(bpy)3]2+ to trigger transformations of organic molecules. Organic synthesis using visible-light photocatalysis and its 20th century roots. ACTA ACUST UNITED AC 2011. [DOI: 10.1135/cccc2011078] [Citation(s) in RCA: 435] [Impact Index Per Article: 33.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Reactions triggered by light constitute a treasure trove of unique synthetic methods that are available to chemists. Photoinduced redox processes using visible light in conjunction with sensitizing dyes offer a great variety of catalytic transformations useful in the realm of organic synthesis. The recent literature amply shows that this preparative toolbox is expanding substantially. This review discusses historical and contemporary work in the area of photoredox catalysis with [Ru(bpy)3]2+. Elegant examples from the most recent literature document the importance of this fast developing area of research. The photoredox chemistry has also emerged as a promising bond-making and bond-breaking tool for chemical biology and materials chemistry. A review with 96 references.
Collapse
|
10
|
Affiliation(s)
- Eric Meggers
- Fachbereich Chemie, Philipps‐Universität Marburg, Hans‐Meerwein‐Straße, 35043 Marburg, Germany
| |
Collapse
|
11
|
Gong L, Müller C, Celik MA, Frenking G, Meggers E. 2-Diphenylphosphino-2′-hydroxy-1,1′-binaphthyl as a chiral auxiliary for asymmetric coordination chemistry. NEW J CHEM 2011. [DOI: 10.1039/c0nj00787k] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
12
|
Lin Z, Gong L, Celik MA, Harms K, Frenking G, Meggers E. Asymmetric Coordination Chemistry by Chiral-Auxiliary-Mediated Dynamic Resolution under Thermodynamic Control. Chem Asian J 2010; 6:474-81. [DOI: 10.1002/asia.201000555] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2010] [Indexed: 11/06/2022]
|
13
|
Lacour J. Chiral hexacoordinated phosphates: From pioneering studies to modern uses in stereochemistry. CR CHIM 2010. [DOI: 10.1016/j.crci.2010.02.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
14
|
Meggers E. Chiral auxiliaries as emerging tools for the asymmetric synthesis of octahedral metal complexes. Chemistry 2010; 16:752-8. [PMID: 20013968 DOI: 10.1002/chem.200902652] [Citation(s) in RCA: 92] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
New methods for the stereocontrolled synthesis of octahedral metal complexes are needed in order to fully exploit the stereochemical richness of the octahedron in the fields of catalysis, materials sciences, and life sciences. Whereas a large body of work exists regarding the diastereoselective coordination chemistry with chiral ligands, such efforts are restricted to certain carefully designed chiral ligands which remain in the coordination sphere. The emerging strategy of chiral-auxiliary-mediated asymmetric synthesis holds promise to solve the problem of controlling relative and absolute configuration in octahedral metal complexes in a general fashion, thus hopefully in the future providing access to any desired optical active octahedral metal complex without the need for chiral separations. This short review will summarize reported examples of chiral auxiliaries applied to the asymmetric synthesis of octahedral metal complexes.
Collapse
Affiliation(s)
- Eric Meggers
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse, 35032 Marburg, Germany.
| |
Collapse
|
15
|
Vachon J, Bernardinelli G, Lacour J. Resolution of the First Nonracemic Diquats. Chemistry 2010; 16:2797-805. [DOI: 10.1002/chem.200902562] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
16
|
Michon C, Gonçalves-Farbos MH, Lacour J. NMR enantiodifferentiation of quaternary ammonium salts of Tröger base. Chirality 2009; 21:809-17. [DOI: 10.1002/chir.20687] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
17
|
Aikawa K, Kojima M, Mikami K. Axial Chirality Control of Gold(biphep) Complexes by Chiral Anions: Application to Asymmetric Catalysis. Angew Chem Int Ed Engl 2009; 48:6073-7. [DOI: 10.1002/anie.200902084] [Citation(s) in RCA: 160] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
18
|
Aikawa K, Kojima M, Mikami K. Axial Chirality Control of Gold(biphep) Complexes by Chiral Anions: Application to Asymmetric Catalysis. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200902084] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
19
|
Barry NPE, Austeri M, Lacour J, Therrien B. Highly Efficient NMR Enantiodiscrimination of Chiral Octanuclear Metalla-Boxes in Polar Solvent. Organometallics 2009. [DOI: 10.1021/om900461s] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nicolas P. E. Barry
- Institut de Chimie, Université de Neuchâtel, Case postale 158, CH-2009 Neuchâtel, Switzerland
| | - Martina Austeri
- Department of Organic Chemistry, University of Geneva, Quai E. Ansermet 30, CH-1211, Geneva 4, Switzerland
| | - Jérôme Lacour
- Department of Organic Chemistry, University of Geneva, Quai E. Ansermet 30, CH-1211, Geneva 4, Switzerland
| | - Bruno Therrien
- Institut de Chimie, Université de Neuchâtel, Case postale 158, CH-2009 Neuchâtel, Switzerland
| |
Collapse
|
20
|
Bonnet S, Li J, Siegler M, von Chrzanowski L, Spek A, van Koten G, Klein Gebbink RJ. Synthesis and Resolution of Planar-Chiral Ruthenium-Palladium Complexes with ECE′ Pincer Ligands. Chemistry 2009; 15:3340-3. [DOI: 10.1002/chem.200900117] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
21
|
Crassous J. Chiral transfer in coordination complexes: towards molecular materials. Chem Soc Rev 2009; 38:830-45. [DOI: 10.1039/b806203j] [Citation(s) in RCA: 347] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
22
|
Chow HS, Constable EC, Frantz R, Housecroft CE, Lacour J, Neuburger M, Rappoport D, Schaffner S. Conformationally-locked metallomacrocycles—prototypes for a novel type of axial chirality. NEW J CHEM 2009. [DOI: 10.1039/b819588a] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
23
|
Pérollier C, Bernardinelli G, Lacour J. Sugar derived hexacoordinated phosphates: Chiral anionic auxiliaries with general asymmetric efficiency. Chirality 2008; 20:313-24. [PMID: 17614326 DOI: 10.1002/chir.20441] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Mannose-derived hexacoordinated phosphate anions, prepared in as few as two steps from methyl-alpha-D-mannopyranoside and tris(dimethylamino)phosphine, are chiral anionic auxiliaries with broad asymmetric efficiency. These chemically robust anions are effective NMR chiral solvating agents and efficient asymmetry-inducers, able to control the configuration of conformationally labile C2-symmetric monomethinium cations (organic, helical, charge 1+, P or M enantiomers) and D3-symmetric iron(II) trisdiimine complexes (metallo-organic, octahedral, charge 2+, Delta or Lambda enantiomers). Diastereomeric control with often unmatched selective levels was achieved with the help of mannopyranoside backbone of the anions and the substituents on the [1,3]dioxane ring that play a key role in the recognition process, something not obvious at first sight.
Collapse
Affiliation(s)
- Céline Pérollier
- Department of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, CH-1211 Geneva 4, Switzerland
| | | | | |
Collapse
|
24
|
Gonçalves-Farbos MH, Vial L, Lacour J. Enantioselective [1,2]-Stevens rearrangement of quaternary ammonium salts. A mechanistic evaluation. Chem Commun (Camb) 2008:829-31. [DOI: 10.1039/b716488b] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
25
|
Affiliation(s)
- Jérôme Lacour
- Department of Organic Chemistry, University of Geneva, 1211 Geneva 4, Switzerland.
| | | |
Collapse
|
26
|
Auffrant A, Barbieri A, Barigelletti F, Lacour J, Mobian P, Collin JP, Sauvage JP, Ventura B. Bimetallic Iridium(III) Complexes Consisting of Ir(ppy)2 Units (ppy = 2-Phenylpyridine) and Two Laterally Connected N∧N Chelates as Bridge: Synthesis, Separation, and Photophysical Properties. Inorg Chem 2007; 46:6911-9. [PMID: 17636895 DOI: 10.1021/ic700494e] [Citation(s) in RCA: 81] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Reaction of the precursor complex Ir2(ppy)4Cl2 (ppy = 2-phenylpyridine) with the bridging ligand 3,8-dipyridyl-4,7-phenanthroline (L) affords, in 94% yield, the cyclometalated iridium dinuclear complex [(ppy)2Ir(mu-L)Ir(ppy)2]2+ (12+) as a mixture of three stereoisomers. This mixture consists of a meso form Delta,Lambda and a racemic form (enantiomeric pair Delta,Delta and Lambda,Lambda) in the ratio 1:1.5. Single-crystal X-ray characterization of the perchlorate salt of the meso form reveals (i) the distortion of the bridging ligand from the planarity and (ii) the location of the two iridium subunits above and below the medium plane of the bridging ligand. Ion-pair chromatography with Delta-TRISPHAT anion (TRISPHAT = tris(tetrachlorobenzenediolato)phosphate(V)) as resolving anion permits the separation of the three stereoisomers. The 1H NMR spectroscopic analysis of each fraction indicates high diastereomeric purity. Electronic circular dichroism properties and comparison with literature data establish their absolute configuration. The absorption and emission properties of the three stereoisomers show only very small variations. The anisotropic properties can be interpreted as distinct interactions of the isomers with the chiral resolving Delta-TRISPHAT anion.
Collapse
Affiliation(s)
- Audrey Auffrant
- Laboratoire de Chimie Organo-Minérale, UMR 7177 CNRS, Université Louis Pasteur, Institut Le Bel, 4 rue Blaise Pascal, 67070 Strasbourg, France
| | | | | | | | | | | | | | | |
Collapse
|
27
|
Constant S, Frantz R, Müller J, Bernardinelli G, Lacour J. TRISPHAT-N: A Chiral Hexacoordinated Phosphate Anion with Unique Asymmetric Coordinating Properties. Organometallics 2007. [DOI: 10.1021/om070074k] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Samuel Constant
- Département de Chimie Organique, Université de Genève, quai Ernest-Ansermet 30, 1211 Genève 4, Switzerland, and Laboratory of Crystallography, Université de Genève, quai Ernest-Ansermet 24, 1211 Genève 4, Switzerland
| | - Richard Frantz
- Département de Chimie Organique, Université de Genève, quai Ernest-Ansermet 30, 1211 Genève 4, Switzerland, and Laboratory of Crystallography, Université de Genève, quai Ernest-Ansermet 24, 1211 Genève 4, Switzerland
| | - Jessica Müller
- Département de Chimie Organique, Université de Genève, quai Ernest-Ansermet 30, 1211 Genève 4, Switzerland, and Laboratory of Crystallography, Université de Genève, quai Ernest-Ansermet 24, 1211 Genève 4, Switzerland
| | - Gérald Bernardinelli
- Département de Chimie Organique, Université de Genève, quai Ernest-Ansermet 30, 1211 Genève 4, Switzerland, and Laboratory of Crystallography, Université de Genève, quai Ernest-Ansermet 24, 1211 Genève 4, Switzerland
| | - Jérôme Lacour
- Département de Chimie Organique, Université de Genève, quai Ernest-Ansermet 30, 1211 Genève 4, Switzerland, and Laboratory of Crystallography, Université de Genève, quai Ernest-Ansermet 24, 1211 Genève 4, Switzerland
| |
Collapse
|
28
|
Frantz R, Grange CS, Al-Rasbi NK, Ward MD, Lacour J. Enantiodifferentiation of chiral cationic cages using trapped achiral BF4? anions as chirotopic probes. Chem Commun (Camb) 2007:1459-61. [PMID: 17389992 DOI: 10.1039/b618092b] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The addition of enantiopure TRISPHAT anions to chiral cationic cages of type [Co(4)(L)(6)(BF(4))](7+) leads to the enantiodifferentiation of the ligands of the racemic salts and, even more effectively, of the achiral tetrafluoroborate anion trapped inside.
Collapse
Affiliation(s)
- Richard Frantz
- Department of Organic Chemistry, University of Geneva, Quai E. Ansermet 30, CH-1211, Geneva 4, Switzerland
| | | | | | | | | |
Collapse
|
29
|
Yeh RM, Raymond KN. Supramolecular Asymmetric Induction in Dinuclear Triple-Stranded Helicates1. Inorg Chem 2006; 45:1130-9. [PMID: 16441123 DOI: 10.1021/ic0515711] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Supramolecular chiral induction has been observed in five dinuclear triple-stranded helicates composed entirely of achiral components. Three different chiral cations were found to be very effective at inducing high levels of enantiomeric enrichment in racemic mixtures of the helicates. The mechanism of intermolecular chiral induction in one cation-helicate pair, s-nic/K6[Ga2L(1)3], has been elucidated through circular dichroism spectroscopy, X-ray crystallography, and one and two-dimensional NMR spectroscopy (s-nic = N-methyl-s-nicotinium, H4L(1) = 1,4-bis(2',3'-dihydroxybenzamido)phenylene).
Collapse
Affiliation(s)
- Robert M Yeh
- Department of Chemistry, University of California, Berkeley, California 94720-1460, USA
| | | |
Collapse
|
30
|
Bergman SD, Frantz R, Gut D, Kol M, Lacour J. Effective chiral recognition among ions in polar media. Chem Commun (Camb) 2006:850-2. [PMID: 16479288 DOI: 10.1039/b516255f] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Effective homochiral recognition occurs between the cationic [Fe(eilatin)3]2+ complex and TRISPHAT anions even in polar media such as 90% acetone-CHCl3 (de > or = 89%).
Collapse
Affiliation(s)
- Sheba D Bergman
- School of Chemistry, Tel Aviv University, Ramat Aviv, Tel Aviv 69978, Israel
| | | | | | | | | |
Collapse
|
31
|
Frantz R, Pinto A, Constant S, Bernardinelli G, Lacour J. Fluorinated TRISPHAT Anions: Spectroscopic Probes for Detailed Asymmetric Ion Pairing Studies. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200500862] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
32
|
Frantz R, Pinto A, Constant S, Bernardinelli G, Lacour J. Fluorinated TRISPHAT Anions: Spectroscopic Probes for Detailed Asymmetric Ion Pairing Studies. Angew Chem Int Ed Engl 2005; 44:5060-4. [PMID: 16010701 DOI: 10.1002/anie.200500862] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Richard Frantz
- Department of Organic Chemistry, University of Geneva, quai Ernest Ansermet 30, 1211 Geneva 4, Switzerland
| | | | | | | | | |
Collapse
|
33
|
Llewellyn DB, Arndtsen BA. Synthesis of a library of chiral α-amino acid-based borate counteranions and their application to copper catalyzed olefin cyclopropanation. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.tetasy.2005.04.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
34
|
Bas D, Bürgi T, Lacour J, Vachon J, Weber J. Vibrational and electronic circular dichroism of Δ-TRISPHAT [tris(tetrachlorobenzenediolato)phosphate(V)] anion. Chirality 2005; 17 Suppl:S143-8. [PMID: 15806572 DOI: 10.1002/chir.20131] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Herein is reported an experimental and theoretical study of the circular dichroism properties of TRISPHAT (1) anion. ECD analysis of the [tetramethylammonium][delta-1] salt confirms the absolute configuration assignment obtained through X-ray crystallographic analysis of the parent cinchonidium salt. The structure, infrared, and vibrational circular dichroism (VCD) spectra derived from density functional theory (DFT) calculations are compared with experimental data.
Collapse
Affiliation(s)
- Delphine Bas
- Département de Chimie Organique, Université de Genève, Genève, Switzerland
| | | | | | | | | |
Collapse
|
35
|
Jodry JJ, Frantz R, Lacour J. Supramolecular Stereocontrol of Octahedral Metal-Centered Chirality. Ligand Modulation. Inorg Chem 2004; 43:3329-31. [PMID: 15154791 DOI: 10.1021/ic049661d] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
By associating chiral labile [FeL3](2+) complexes with TRISPHAT anions, a stereocontrol of the metal-centered chirality is feasible; the sense of the stereoselective induction and its magnitude strongly depends upon the structure of the diimine ligands (L: bpy, phen).
Collapse
Affiliation(s)
- Jonathan J Jodry
- Département de Chimie Organique, Université de Genève, quai Ernest-Ansermet 30, CH-1211 Genèva 4, Switzerland
| | | | | |
Collapse
|