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Chiral control of spin-crossover dynamics in Fe(II) complexes. Nat Chem 2022; 14:739-745. [PMID: 35618767 DOI: 10.1038/s41557-022-00933-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 03/14/2022] [Indexed: 11/08/2022]
Abstract
Iron-based spin-crossover complexes hold tremendous promise as multifunctional switches in molecular devices. However, real-world technological applications require the excited high-spin state to be kinetically stable-a feature that has been achieved only at cryogenic temperatures. Here we demonstrate high-spin-state trapping by controlling the chiral configuration of the prototypical iron(II)tris(4,4'-dimethyl-2,2'-bipyridine) in solution, associated for stereocontrol with the enantiopure Δ- or Λ-enantiomer of tris(3,4,5,6-tetrachlorobenzene-1,2-diolato-κ2O1,O2)phosphorus(V) (P(O2C6Cl4)3- or TRISPHAT) anions. We characterize the high-spin-state relaxation using broadband ultrafast circular dichroism spectroscopy in the deep ultraviolet in combination with transient absorption and anisotropy measurements. We find that the high-spin-state decay is accompanied by ultrafast changes of its optical activity, reflecting the coupling to a symmetry-breaking torsional twisting mode, contrary to the commonly assumed picture. The diastereoselective ion pairing suppresses the vibrational population of the identified reaction coordinate, thereby achieving a fourfold increase of the high-spin-state lifetime. More generally, our results motivate the synthetic control of the torsional modes of iron(II) complexes as a complementary route to manipulate their spin-crossover dynamics.
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2
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Ondrisek P, Elie M, Pupier M, de Aguirre A, Poblador‐Bahamonde AI, Besnard C, Lacour J. Acetylene Derivatives of Cationic Diazaoxatriangulenes and Diaza [4]Helicenes ‐ Access to Red Emitters and Planar Chiral Stereochemical Traits. Chemistry 2022; 28:e202104405. [PMID: 35040214 PMCID: PMC9305763 DOI: 10.1002/chem.202104405] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Indexed: 11/25/2022]
Abstract
Cationic triangulenes, and related helicenes, constitute a rich class of dyes and fluorophores, usually absorbing and emitting light at low energy, in the orange to red domains. Recently, to broaden the scope of applications, regioselective late‐stage functionalizations on these core moieties have been developed. For instance, with the introduction of electron‐donating groups (EDGs), important bathochromic shifts are observed pushing absorptions towards or in the near‐infrared (NIR) spectral domain while emissive properties disappear essentially completely. Herein, to upset this drawback, acetylene derivatives of cationic diazaoxa triangulenes (DAOTA) and [4]helicenes are prepared (16 examples). Contrary to other EDG‐functionalized derivatives, C≡C− functionalized products remain broadly fluorescent, with red‐shifted absorptions (Δλabs up to 25 nm) and emissions (Δλem up to 73 nm, ΦPL up to 51 %). Quite interestingly, a general dynamic stereoisomerism phenomenon is evidenced for the compounds derived from achiral DAOTA cores. At low temperature in 1H NMR spectroscopy (218 K), N−CH2 protons become diastereotopic with chemical shifts differences (Δδ) as high as +1.64 ppm. The signal coalescence occurs around 273 K with a barrier of ∼12 kcal mol−1. This phenomenon is due to planar chiral conformations (Sp and Rp configurations), induced by the geometry of the alkyl (n‐propyl) side‐chains next to the acetylenic substituents. Ion pairing studies with Δ‐TRISPHAT anion not only confirm the occurrence of the chiral conformations but evidence a moderate but definite asymmetric induction from the chiral anion onto the cations. Finally, DFT calculations offer a valuable insight on the geometries, the corresponding stereodynamics and also on the very large difference in NMR for some of the diastereotopic protons.
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Affiliation(s)
- Pavol Ondrisek
- Department of Organic Chemistry University of Geneva Quai Ernest Ansermet 30 1211 Geneva 4 Switzerland
| | - Margaux Elie
- Department of Organic Chemistry University of Geneva Quai Ernest Ansermet 30 1211 Geneva 4 Switzerland
| | - Marion Pupier
- Department of Organic Chemistry University of Geneva Quai Ernest Ansermet 30 1211 Geneva 4 Switzerland
| | - Adiran de Aguirre
- Department of Organic Chemistry University of Geneva Quai Ernest Ansermet 30 1211 Geneva 4 Switzerland
| | | | - Céline Besnard
- Laboratoire de Cristallographie University of Geneva Quai Ernest Ansermet 24 1211 Geneva 4 Switzerland
| | - Jérôme Lacour
- Department of Organic Chemistry University of Geneva Quai Ernest Ansermet 30 1211 Geneva 4 Switzerland
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3
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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...
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Voci S, Zinna F, Arrico L, Grass S, Bouffier L, Lacour J, Di Bari L, Sojic N. Chiroptical detection of a model ruthenium dye in water by circularly polarized-electrochemiluminescence. Chem Commun (Camb) 2020; 56:5989-5992. [DOI: 10.1039/d0cc01571g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We demonstrate the possibility to detect selectively the two single enantiomers of a model [Ru(bpy)3]2+-based dye by circularly polarized-electrochemiluminescence (CP-ECL).
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Affiliation(s)
- Silvia Voci
- Univ. Bordeaux
- Bordeaux INP
- CNRS
- Institut des Sciences Moléculaires
- UMR 5255
| | - Francesco Zinna
- Dipartimento di Chimica e Chimica Industriale
- University of Pisa
- via G. Moruzzi 13
- Pisa
- Italy
| | - Lorenzo Arrico
- Dipartimento di Chimica e Chimica Industriale
- University of Pisa
- via G. Moruzzi 13
- Pisa
- Italy
| | - Stéphane Grass
- Department of Organic Chemistry
- University of Geneva
- Quai Ernest Ansermet 30
- 1211 Geneva 4
- Switzerland
| | - Laurent Bouffier
- Univ. Bordeaux
- Bordeaux INP
- CNRS
- Institut des Sciences Moléculaires
- UMR 5255
| | - Jérôme Lacour
- Department of Organic Chemistry
- University of Geneva
- Quai Ernest Ansermet 30
- 1211 Geneva 4
- Switzerland
| | - Lorenzo Di Bari
- Dipartimento di Chimica e Chimica Industriale
- University of Pisa
- via G. Moruzzi 13
- Pisa
- Italy
| | - Neso Sojic
- Univ. Bordeaux
- Bordeaux INP
- CNRS
- Institut des Sciences Moléculaires
- UMR 5255
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Yang J, Chatelet B, Hérault D, Dufaud V, Robert V, Grass S, Lacour J, Vanthuyne N, Jean M, Albalat M, Dutasta J, Martinez A. Enantiopure encaged Verkade's superbases: Synthesis, chiroptical properties, and use as chiral derivatizing agent. Chirality 2019; 32:139-146. [DOI: 10.1002/chir.23156] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 10/14/2019] [Accepted: 11/04/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Jian Yang
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Bastien Chatelet
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Damien Hérault
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Véronique Dufaud
- Laboratoire de Chimie, Catalyse, Polymères, Procédés CNRS, UMR 5265Université Claude Bernard Lyon1 Villeurbanne cedex France
| | - Vincent Robert
- Laboratoire de Chimie Quantique Institut de Chimie, UMR CNRS 7177Université de Strasbourg Strasbourg France
| | - Stéphane Grass
- Department of Organic Chemistry, Quai Ernest Ansermet 30University of Geneva Geneva Switzerland
| | - Jérôme Lacour
- Department of Organic Chemistry, Quai Ernest Ansermet 30University of Geneva Geneva Switzerland
| | | | - Marion Jean
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Muriel Albalat
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Jean‐Pierre Dutasta
- Laboratoire de Chimie École Normale Supérieure de Lyon CNRS, UCBL, 46 Allée d'Italie Lyon F‐69364 France
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6
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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
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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
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Song JF, Li Y, Zhou RS, Shao J, Wang L, Cui XB. Five metal imidazole dicarboxylate-based compounds comprising M3(MIDC)2 entities (M = Zn2+, Co2+, Mn2+): syntheses, structures and properties. J COORD CHEM 2015. [DOI: 10.1080/00958972.2015.1071483] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Jiang-Feng Song
- Department of Chemistry, North University of China, Taiyuan, PR China
| | - Yang Li
- Department of Chemistry, North University of China, Taiyuan, PR China
| | - Rui-Sha Zhou
- Department of Chemistry, North University of China, Taiyuan, PR China
| | - Jia Shao
- Department of Chemistry, North University of China, Taiyuan, PR China
| | - Lu Wang
- Department of Chemistry, North University of China, Taiyuan, PR China
| | - Xiao-Bing Cui
- College of Chemistry and State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun, PR China
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9
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Sun Y, Wang L, Yu D, Tang N, Wu J. Zinc/magnesium–sodium/lithium heterobimetallic triphenolates: Synthesis, characterization, and application as catalysts in the ring-opening polymerization of l-lactide and CO2/epoxide coupling. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcata.2014.06.017] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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10
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Sun L, Song JF, Zhou RS, Zhang J, Wang L, Cui KL, Xu XY. Homochiral imidazole-based dicarboxylate metal complexes with SrSi2 topology: synthesis, crystal structures, and properties. J COORD CHEM 2014. [DOI: 10.1080/00958972.2014.902448] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Li Sun
- Department of Chemistry, North University of China, Taiyuan, PR China
| | - Jiang-Feng Song
- Department of Chemistry, North University of China, Taiyuan, PR China
| | - Rui-Sha Zhou
- Department of Chemistry, North University of China, Taiyuan, PR China
| | - Jia Zhang
- Department of Chemistry, North University of China, Taiyuan, PR China
| | - Lu Wang
- Department of Chemistry, North University of China, Taiyuan, PR China
| | - Kun-Li Cui
- Department of Chemistry, North University of China, Taiyuan, PR China
| | - Xiao-Yu Xu
- Department of Public Security of Jilin Province, Changchun, PR China
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11
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Cámara V, Masciocchi N, Gil-Rubio J, Vicente J. Triple Helicates with Golden Strands: Self-Assembly of M2Au6Complexes from Gold(I) Metallaligands and Iron(II), Cobalt(II) or Zinc(II) Cations. Chemistry 2013; 20:1389-402. [DOI: 10.1002/chem.201303744] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Indexed: 11/05/2022]
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12
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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]
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13
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Safont-Sempere MM, Fernández G, Würthner F. Self-sorting phenomena in complex supramolecular systems. Chem Rev 2011; 111:5784-814. [PMID: 21846150 DOI: 10.1021/cr100357h] [Citation(s) in RCA: 645] [Impact Index Per Article: 49.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marina M Safont-Sempere
- Universität Würzburg, Institut für Organische Chemie and Center for Nanosystems Chemistry, Am Hubland, 97074 Würzburg, Germany
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14
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Safont-Sempere M, Osswald P, Radacki K, Würthner F. Chiral Self-Recognition and Self-Discrimination of Strapped Perylene Bisimides by π-Stacking Dimerization. Chemistry 2010; 16:7380-4. [DOI: 10.1002/chem.201001137] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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15
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Sharma S, Lombeck F, Eriksson L, Johansson O. Resolution of Conformationally Chiralmer-[Ru(dqp)2]2+and Crystallographic Analysis of [δ,δ-Ru(dqp)2][Δ-TRISPHAT]2(dqp=2,6-Di(quinolin-8-yl)pyridine; TRISPHAT=Tris(tetrachlorocatecholate)phosphate). Chemistry 2010; 16:7078-81. [DOI: 10.1002/chem.201000570] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Bonnot C, Aubert E, Banerji N, Lacour J, Espinosa E, Chambron JC. Kinetic Control in the Chiral Recognition of Three-Bladed Propellers. Chemistry 2010; 16:5706-11. [DOI: 10.1002/chem.200903058] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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17
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Chmel NP, Howson SE, Allan LEN, Barker J, Clarkson GJ, Turner SS, Scott P. Organic-soluble optically pure anionic metal complexes PPh4[MIII(S,S-EDDS)]·2H2O (M = Fe, Co, Cr). Dalton Trans 2010; 39:2919-27. [DOI: 10.1039/b924787d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Villani C, Gasparrini F, Pierini M, Mortera SL, D'Acquarica I, Ciogli A, Zappia G. Dynamic HPLC of stereolabile iron(II) complexes on chiral stationary phases. Chirality 2009; 21:97-103. [DOI: 10.1002/chir.20612] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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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]
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21
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Bouit PA, Aronica C, Guy L, Martinez A, Andraud C, Maury O. Diastereoselective supramolecular ion-pairing between the TRISPHAT anion and pro-chiral heptamethine cyanine dyes. Org Biomol Chem 2009. [DOI: 10.1039/b905366b] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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22
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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.
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Affiliation(s)
- Céline Pérollier
- Department of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, CH-1211 Geneva 4, Switzerland
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23
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Pazderski L, Tousek J, Sitkowski J, Kozerski L, Szłyk E. Experimental and quantum-chemical studies of 1H, 13C and 15N NMR coordination shifts in Pd(II) and Pt(II) chloride complexes with methyl and phenyl derivatives of 2,2'-bipyridine and 1,10-phenanthroline. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2007; 45:1045-1058. [PMID: 18044804 DOI: 10.1002/mrc.2104] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
1H, 13C and 15N NMR studies of platinide(II) (M=Pd, Pt) chloride complexes with methyl and phenyl derivatives of 2,2'-bipyridine and 1,10-phenanthroline [LL=4,4'-dimethyl-2,2'-bipyridine (dmbpy); 4,4'-diphenyl-2,2'-bipyridine (dpbpy); 4,7-dimethyl-1,10-phenanthroline (dmphen); 4,7-diphenyl-1,10-phenanthroline (dpphen)] having a general [M(LL)Cl2] formula were performed and the respective chemical shifts (delta1H, delta13C, delta15N) reported. 1H high-frequency coordination shifts (Delta1Hcoord=delta1Hcomplex-delta1Hligand) were discussed in relation to the changes of diamagnetic contribution in the relevant 1H shielding constants. The comparison to literature data for similar [M(LL)(XX)], [M(LL)X2] and [M(LL)XY] coordination or organometallic compounds containing various auxiliary ligands revealed a large dependence of delta1H parameters on inductive and anisotropic effects. 15N low-frequency coordination shifts (Delta15Ncoord=delta 15Ncomplex-delta15Nligand) of ca 88-96 ppm for M=Pd and ca 103-111 ppm for M=Pt were attributed to both the decrease of the absolute value of paramagnetic contribution and the increase of the diamagnetic term in the expression for 15N shielding constants. The absolute magnitude of Delta15Ncoord parameter increased by ca 15 ppm upon Pd(II)-->Pt(II) transition and by ca 6-7 ppm following dmbpy-->dmphen or dpbpy-->dpphen ligand replacement; variations between analogous complexes containing methyl and phenyl ligands (dmbpy vs dpbpy; dmphen vs dpphen) did not exceed+/-1.5 ppm. Experimental 1H, 13C, 15N NMR chemical shifts were compared to those quantum-chemically calculated by B3LYP/LanL2DZ+6-31G**//B3LYP/LanL2DZ+6-31G*, both in vacuo and in DMSO or DMF solution.
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Affiliation(s)
- Leszek Pazderski
- Faculty of Chemistry, Nicholas Copernicus University, Gagarina 7, PL-87100 Toruń, Poland.
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24
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Frantz R, Guillamón E, Lacour J, Llusar R, Polo V, Vicent C. C3-Symmetric Trinuclear Molybdenum Cluster Sulfides: Configurational Stability, Supramolecular Stereocontrol, and Absolute Configuration Assignment. Inorg Chem 2007; 46:10717-23. [DOI: 10.1021/ic701522p] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Richard Frantz
- Département de Chimie Organique, Université de Genève, quai Ernest-Ansermet 30, CH-1211 Genève 4, Switzerland, and Departament de Química Física i Analítica, and Serveis Centrals d'Instrumentació Científica, Universitat Jaume I, Avda. Sos Baynat s/n, E-12080, Castelló, Spain
| | - Eva Guillamón
- Département de Chimie Organique, Université de Genève, quai Ernest-Ansermet 30, CH-1211 Genève 4, Switzerland, and Departament de Química Física i Analítica, and Serveis Centrals d'Instrumentació Científica, Universitat Jaume I, Avda. Sos Baynat s/n, E-12080, Castelló, Spain
| | - Jérôme Lacour
- Département de Chimie Organique, Université de Genève, quai Ernest-Ansermet 30, CH-1211 Genève 4, Switzerland, and Departament de Química Física i Analítica, and Serveis Centrals d'Instrumentació Científica, Universitat Jaume I, Avda. Sos Baynat s/n, E-12080, Castelló, Spain
| | - Rosa Llusar
- Département de Chimie Organique, Université de Genève, quai Ernest-Ansermet 30, CH-1211 Genève 4, Switzerland, and Departament de Química Física i Analítica, and Serveis Centrals d'Instrumentació Científica, Universitat Jaume I, Avda. Sos Baynat s/n, E-12080, Castelló, Spain
| | - Victor Polo
- Département de Chimie Organique, Université de Genève, quai Ernest-Ansermet 30, CH-1211 Genève 4, Switzerland, and Departament de Química Física i Analítica, and Serveis Centrals d'Instrumentació Científica, Universitat Jaume I, Avda. Sos Baynat s/n, E-12080, Castelló, Spain
| | - Cristian Vicent
- Département de Chimie Organique, Université de Genève, quai Ernest-Ansermet 30, CH-1211 Genève 4, Switzerland, and Departament de Química Física i Analítica, and Serveis Centrals d'Instrumentació Científica, Universitat Jaume I, Avda. Sos Baynat s/n, E-12080, Castelló, Spain
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25
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Winkelmann O, Linder D, Lacour J, Näther C, Lüning U. Chiral Concave Imidazolinium Salts as Precursors to Chiral ConcaveN-Heterocyclic Carbenes. European J Org Chem 2007. [DOI: 10.1002/ejoc.200700206] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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26
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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.
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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
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27
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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
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28
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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.
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Affiliation(s)
- Richard Frantz
- Department of Organic Chemistry, University of Geneva, Quai E. Ansermet 30, CH-1211, Geneva 4, Switzerland
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29
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Rozas I, Alkorta I, Elguero J. Stereoisomer Discrimination in Complexes of Halogen-Substituted Difuranes and Li or Na Cations. J Phys Chem A 2006; 110:13310-6. [PMID: 17149851 DOI: 10.1021/jp064386x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The theoretical study of the stereoisomer discrimination of the 2:1 homo- and heterochiral complexes between chiral 5,5'-dihalogen bifuranes and lithium or sodium cations has been carried out using DFT methods. To understand the chiral effect produced by the introduction of a second bifurane molecule, the 1:1 complexes also have been calculated. All the 2:1 heterochiral complexes computed showed a nonplanar configuration around the metallic cation, but in the case of the homochiral complexes, the dibromo- and dichloro-bifurane systems around Na+ were quasi-planar. The nature of the interactions established between cations and bifurane systems has been analyzed by means of AIM and NBO, and correlations between the electron density topological parameters with the O...M distance and with the orbital interaction energy have been found. Stereodiscrimination is observed favoring the heterochiral complexes except for the Na+ complexes with chloro and bromo substituents in which the homochiral forms are more stable. Stereodiscrimination values correlate with the difference in electron density at the bond critical point and orbital interaction energy between homo- and heterochiral systems.
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Affiliation(s)
- Isabel Rozas
- Centre of Synthesis and Chemical Biology, School of Chemistry, Trinity College Dublin, Dublin 2, Ireland.
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30
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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).
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Affiliation(s)
- Robert M Yeh
- Department of Chemistry, University of California, Berkeley, California 94720-1460, USA
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31
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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%).
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Affiliation(s)
- Sheba D Bergman
- School of Chemistry, Tel Aviv University, Ramat Aviv, Tel Aviv 69978, Israel
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32
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Akitsu T, Einaga Y. Synthesis, crystal structures and electronic properties of Schiff base nickel (II) complexes: Towards solvatochromism induced by a photochromic solute. Polyhedron 2005. [DOI: 10.1016/j.poly.2005.06.019] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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33
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Feuvrie C, Ledoux I, Zyss J, Le Bozec H, Maury O. Supramolecular associations of anionic and cationic octupoles. CR CHIM 2005. [DOI: 10.1016/j.crci.2004.11.037] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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34
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Argent SP, Riis-Johannessen T, Jeffery JC, Harding LP, Ward MD. Diastereoselective formation and optical activity of an M4L6 cage complex. Chem Commun (Camb) 2005:4647-9. [PMID: 16175279 DOI: 10.1039/b509239f] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A chiral bridging ligand affords a single diastereoisomer of tetrahedral M4L6 cage complex in which the optical rotation of each ligand is increased by a factor of 5 on coordination.
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Affiliation(s)
- Stephen P Argent
- Department of Chemistry, University of Sheffield, Sheffield, UK S3 7HF
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35
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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.
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Affiliation(s)
- Delphine Bas
- Département de Chimie Organique, Université de Genève, Genève, Switzerland
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36
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Constable EC, Frantz R, Housecroft CE, Lacour J, Mahmood A. Chiral Induction in a Ribose-Decorated Metallostar through Intrinsic and Interionic Diastereomeric Interactions. Inorg Chem 2004; 43:4817-9. [PMID: 15285654 DOI: 10.1021/ic049392r] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A ribose-functionalized bpy ligand has been prepared and shown to give modest diastereomeric excesses of Lambda-[FeL(3)](2+) complexes; interconversion of Delta and Lambda cations is relatively fast, and in CHCl(3), the favored complexes with Delta- or Lambda-TRISPHAT counterions are homochiral, (Delta(+)Delta(-)) or (Lambda(+)Lambda(-)). In the case of the Delta-TRISPHAT salt, a single diastereomer is observed (de > or = 96%).
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Affiliation(s)
- Edwin C Constable
- Department of Chemistry, University of Basel, Spitalstrasse 51, CH 4056 Basel, Switzerland.
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