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Harry SA, Kazim M, Nguyen PM, Zhu A, Xiang MR, Catazaro J, Siegler M, Lectka T. The Close Interaction of a C-F Bond with an Amide Carbonyl: Crystallographic and Spectroscopic Characterization. Angew Chem Int Ed Engl 2022; 61:e202207966. [PMID: 35716396 PMCID: PMC9544880 DOI: 10.1002/anie.202207966] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Indexed: 11/26/2022]
Abstract
The putative interaction of a C-F bond with an amide carbonyl has been an intriguing topic of interest in this century for reasons spanning basic physical organic chemistry to biochemistry. However, to date, there exist no examples of a close, well-defined interaction in which its unique aspects can be identified and exploited. Herein, we finally present an engineered system possessing an exceptionally tight C-F-amide interaction, allowing us to obtain spectroscopic, crystallographic, and kinetic details of a distinctive, biochemically relevant chemical system for the first time. In turn, we also explore Lewis acid coordination, C-F bond promotion of amide isomerization, enantiomerization, and ion protonation processes.
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Affiliation(s)
- Stefan Andrew Harry
- Department of ChemistryJohns Hopkins University3400 N. Charles St.BaltimoreMD 21218USA
| | - Muhammad Kazim
- Department of ChemistryJohns Hopkins University3400 N. Charles St.BaltimoreMD 21218USA
| | - Phuong Minh Nguyen
- Department of ChemistryJohns Hopkins University3400 N. Charles St.BaltimoreMD 21218USA
| | | | - Michael Richard Xiang
- Department of ChemistryJohns Hopkins University3400 N. Charles St.BaltimoreMD 21218USA
| | - Jonathan Catazaro
- Department of ChemistryJohns Hopkins University3400 N. Charles St.BaltimoreMD 21218USA
| | - Maxime Siegler
- Department of ChemistryJohns Hopkins University3400 N. Charles St.BaltimoreMD 21218USA
| | - Thomas Lectka
- Department of ChemistryJohns Hopkins University3400 N. Charles St.BaltimoreMD 21218USA
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Harry SA, Kazim M, Nguyen PM, Zhu A, Xiang MR, Catazaro J, Siegler M, Lectka T. The Close Interaction of a C‐F Bond with an Amide Carbonyl: Crystallographic and Spectroscopic Characterization. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Stefan Andrew Harry
- Johns Hopkins University Chemistry 3400 n Charles 21212 Baltimore UNITED STATES
| | | | | | - Andrea Zhu
- Johns Hopkins University chemistry UNITED STATES
| | | | | | | | - Thomas Lectka
- Johns Hopkins University Chemistry 3400 N. Charles Street 21218-2685 Baltimore UNITED STATES
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Fujiki M, Wang L, Ogata N, Asanoma F, Okubo A, Okazaki S, Kamite H, Jalilah AJ. Chirogenesis and Pfeiffer Effect in Optically Inactive Eu III and Tb III Tris(β-diketonate) Upon Intermolecular Chirality Transfer From Poly- and Monosaccharide Alkyl Esters and α-Pinene: Emerging Circularly Polarized Luminescence (CPL) and Circular Dichroism (CD). Front Chem 2020; 8:685. [PMID: 32903703 PMCID: PMC7438854 DOI: 10.3389/fchem.2020.00685] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Accepted: 06/30/2020] [Indexed: 11/30/2022] Open
Abstract
We report emerging circularly polarized luminescence (CPL) at 4f-4f transitions when lanthanide (EuIII and TbIII) tris(β-diketonate) embedded to cellulose triacetate (CTA), cellulose acetate butyrate (CABu), D-/L-glucose pentamethyl esters (D-/L-Glu), and D-/L-arabinose tetramethyl esters (D-/L-Ara) are in film states. Herein, 6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5-octanedionate (fod) and 2,2,6,6-tetramethyl-3,5-heptanedione (dpm) were chosen as the β-diketonates. The glum value of Eu(fod)3 in CABu are +0.0671 at 593 nm (5D0→7F1) and −0.0059 at 613 nm (5D0→7F2), respectively, while those in CTA are +0.0463 and −0.0040 at these transitions, respectively. The glum value of Tb(fod)3 in CABu are −0.0029 at 490 nm (5D4→7F6), +0.0078 at 540 nm (5D4→7F5), and −0.0018 at 552 nm (5D4→7F5), respectively, while those in CTA are −0.0053, +0.0037, and −0.0059 at these transitions, respectively. D-/L-Glu and D-/L-Ara induced weaker glum values at 4f-4f transitions of Eu(fod)3, Tb(fod)3, and Tb(dpm)3. For comparison, Tb(dpm)3 in α-pinene showed clear CPL characteristics, though Eu(dpm)3 did not. A surplus charge neutralization hypothesis was applied to the origin of attractive intermolecular interactions between the ligands and saccharides. This idea was supported from the concomitant opposite tendency in upfield 19F-NMR and downfield 1H-NMR chemical shifts of Eu(fod)3 and the opposite Mulliken charges between F-C bonds (fod) and H-C bonds (CTA and D-/L-Glu). An analysis of CPL excitation (CPLE) and CPL spectra suggests that (+)- and (–)-sign CPL signals of EuIII and TbIII at different 4f-4f transitions in the visible region are the same with the (+)-and (–)-sign exhibited by CPLE bands at high energy levels of EuIII and TbIII in the near-UV region.
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Affiliation(s)
- Michiya Fujiki
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Japan
| | - Laibing Wang
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Japan
| | - Nanami Ogata
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Japan
| | - Fumio Asanoma
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Japan
| | - Asuka Okubo
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Japan
| | - Shun Okazaki
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Japan
| | - Hiroki Kamite
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Japan
| | - Abd Jalil Jalilah
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Japan.,School of Materials Engineering, Universiti Malaysia Perlis, Jejawi, Malaysia.,Centre of Excellence Frontier Materials Research, Universiti Malaysia Perlis, Kangar, Malaysia
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Sign control of circularly polarized luminescence by substituent domino effect in binaphthyl-Eu(III) organometallic luminophores. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Hara N, Okazaki M, Shizuma M, Marumoto S, Tajima N, Fujiki M, Imai Y. Swapping Circularly Polarised Luminescence of Eu(III)-Binaphthyl Hybridized Luminophore with and without Oxymethylene Spacer. ChemistrySelect 2017. [DOI: 10.1002/slct.201701460] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Nobuyuki Hara
- Department of Applied Chemistry; Faculty of Science and Engineering; Kindai University, 3-4-1 Kowakae, Higashi-Osaka; Osaka 577-8502 Japan
| | - Mamoru Okazaki
- Department of Applied Chemistry; Faculty of Science and Engineering; Kindai University, 3-4-1 Kowakae, Higashi-Osaka; Osaka 577-8502 Japan
| | - Motohiro Shizuma
- Department of Biochemistry; Osaka Research Institute of Industrial Science and Technology, 1-6-50 Morinomiya, Joto-ku; Osaka 536-8553 Japan
| | - Shinsuke Marumoto
- Department of Applied Chemistry; Faculty of Science and Engineering; Kindai University, 3-4-1 Kowakae, Higashi-Osaka; Osaka 577-8502 Japan
| | - Nobuo Tajima
- Computational Materials Science Center; National Institute for Materials Science, 1-2-1 Sengen, Tsukuba; Ibaraki 305-0047 Japan
| | - Michiya Fujiki
- Graduate School of Materials Science; Nara Institute of Science and Technology, Takayama, Ikoma; Nara 630-0192 Japan
| | - Yoshitane Imai
- Department of Applied Chemistry; Faculty of Science and Engineering; Kindai University, 3-4-1 Kowakae, Higashi-Osaka; Osaka 577-8502 Japan
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Carr R, Evans NH, Parker D. Lanthanide complexes as chiral probes exploiting circularly polarized luminescence. Chem Soc Rev 2012; 41:7673-86. [DOI: 10.1039/c2cs35242g] [Citation(s) in RCA: 516] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Victory Devi C, Rajmuhon Singh N. Comparative absorption spectroscopy involving 4f-4f transitions to explore the kinetics of simultaneous coordination of uracil with Nd(III) and Zn(II) and its associated thermodynamics. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 81:296-303. [PMID: 21752705 DOI: 10.1016/j.saa.2011.06.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2011] [Revised: 06/02/2011] [Accepted: 06/13/2011] [Indexed: 05/31/2023]
Abstract
The interaction of uracil with Nd(III) has been explored in presence and absence of Zn(II) using the comparative absorption spectroscopy involving the 4f-4f transitions in different solvents. The complexation of uracil with Nd(III) is indicated by the change in intensity of 4f-4f bands expressing in terms of significant change in oscillator strength and Judd-Ofelt parameters. Intensification of this bands became more prominent in presence of Zn(II) suggesting the stimulative effect of Zn(II) towards the complexation of Nd(III) with uracil. Other spectral parameters namely Slator-Condon (F(k)'s), nephelauxetic effect (β), bonding (b(1/2)) and percent covalency (δ) parameters are computed to correlate their simultaneous binding of metal ions with uracil. The sensitivities of the observed 4f-4f transitions towards the minor coordination changes around Nd(III) has been used to monitor the simultaneous coordination of uracil with Nd(III) and Zn(II). The variation of intensities (oscillator strengths and Judd-Ofelt parameters) of 4f-4f bands during the complexation has helped in following the heterobimetallic complexation of uracil. Rate of complexation with respect to hypersensitive transition was evaluated. Energy of activation and thermodynamic parameters for the complexation reaction were also determined.
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Affiliation(s)
- Ch Victory Devi
- Department of Chemistry, Manipur University, Canchipur-795003, Imphal, India
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Li J, Hu HS, Lyon J, Andrews L. Chirality, Agostic Interactions, and Pyramidality in Actinide Methylidene Complexes. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200702771] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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9
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Li J, Hu HS, Lyon J, Andrews L. Chirality, Agostic Interactions, and Pyramidality in Actinide Methylidene Complexes. Angew Chem Int Ed Engl 2007; 46:9045-9. [DOI: 10.1002/anie.200702771] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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10
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Alekseev YE, Garnovskii AD, Zhdanov YA. Complexes of natural carbohydrates with metal cations. RUSSIAN CHEMICAL REVIEWS 2007. [DOI: 10.1070/rc1998v067n08abeh000343] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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11
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Lama M, Mamula O, Kottas GS, Rizzo F, De Cola L, Nakamura A, Kuroda R, Stoeckli-Evans H. Lanthanide Class of a Trinuclear Enantiopure Helical Architecture Containing Chiral Ligands: Synthesis, Structure, and Properties. Chemistry 2007; 13:7358-73. [PMID: 17623292 DOI: 10.1002/chem.200700324] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The pinene-bipyridine carboxylic derivatives (+)- and (-)-HL, designed to form configurationally stable lanthanide complexes, proved their effectiveness as chiral building blocks for the synthesis of lanthanide-containing superstructures. Indeed a self-assembly process takes place with complete diastereoselectivity between the enantiomerically pure ligand L(-) and Ln(III) ions (La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er), thus leading to the quantitative formation of a trinuclear supramolecular architecture with the general formula [Ln(3)(L)(6)(mu(3)-OH)(H(2)O)(3)](ClO(4))(2) (abbreviated as tris(Ln[L](2))). This class of C(3)-symmetrical compounds was structurally characterized in the solid state and solution. Electrospray (ES) mass spectrometric and (1)H NMR spectroscopic analyses indicated that the trinuclear species are maintained in solution (CH(2)Cl(2)) and are stable in the investigated concentration range (10(-2)-10(-6) m). The photophysical properties of the ligand HL and its tris(Ln[L](2)) complexes were studied at room temperature and 77 K, thus demonstrating that the metal-centered luminescence is well sensitized both for the visible and near-IR emitters. The chiroptical properties of tris(Ln[L](2)) complexes were investigated by means of circular dichroism (CD) and circularly polarized luminescence (CPL). A high CD activity is displayed in the region of pi-pi* transitions of bipyridine. CPL spectra of tris(Eu[(+)-L](2)) and tris(Tb[(+)-L](2)) present large dissymmetry factors g(em) for the sensitive transitions of Eu(III) ((5)D(0)-->(7)F(1), g(em)=-0.088) and Tb(III) ((5)D(4)-->(7)F(5), g(em)=-0.0806). The self-recognition capabilities of the system were tested in the presence of artificial enantiomeric mixtures of the ligand. (1)H NMR spectra identical to those of the enantiomerically pure complexes and investigations by CD spectroscopic analysis reveal an almost complete chiral self-recognition in the self-assembly process, thus leading to mixtures of homochiral trinuclear structures.
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Affiliation(s)
- Marco Lama
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, BCH 1403, 1015 Lausanne, Switzerland
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Gawryszewska P, Sokolnicki J, Legendziewicz J. Photophysics and structure of selected lanthanide compounds. Coord Chem Rev 2005. [DOI: 10.1016/j.ccr.2005.06.021] [Citation(s) in RCA: 124] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Dickins RS, Batsanov AS, Howard JAK, Parker D, Puschmann H, Salamano S. Structural and NMR investigations of the ternary adducts of twenty α-amino acids and selected dipeptides with a chiral, diaqua–ytterbium complex. Dalton Trans 2004:70-80. [PMID: 15356744 DOI: 10.1039/b311791j] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A detailed investigation of the nature of the binding of each of the 20 common alpha-amino acids and various selected dipeptides to a chiral, diaqua-ytterbium complex in aqueous solution has been carried out. Analysis of the dipolar 1H NMR paramagnetic shifts suggests that the alpha-amino acids form a common chelated structure within a nine-coordinate mono-capped square antiprismatic coordination environment, with the amine N axially disposed. Crystal structures of nine chelated YbL1-amino acid adducts (Gly, Ala, Ser, Thr, Met) confirm this. The ternary complexes with dipeptides (e.g. Gly-Ala, Gly-Ser, Gly-Met, Gly-Asp, Gly-Asn, Gly-His, Ser-Met, Asp-Phe, His-Gly) also favour the terminal amine as the axial donor with the proximate amide group binding to generate a five-ring chelate. Evidence for chelation through side-chain functionality was found only in the case of N-terminal Asp. The chiral environment about the ytterbium ion upon amino acid binding has also been probed using near-IR circular dichroism spectroscopy.
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Affiliation(s)
- Rachel S Dickins
- Department of Chemistry, University of Durham, South Road, Durham, UKDH1 3LE.
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Aspinall HC. Chiral lanthanide complexes: coordination chemistry and applications. Chem Rev 2002; 102:1807-50. [PMID: 12059255 DOI: 10.1021/cr010288q] [Citation(s) in RCA: 441] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Helen C Aspinall
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, U.K.
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Bünzli JCG, Piguet C. Lanthanide-containing molecular and supramolecular polymetallic functional assemblies. Chem Rev 2002; 102:1897-928. [PMID: 12059257 DOI: 10.1021/cr010299j] [Citation(s) in RCA: 753] [Impact Index Per Article: 34.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jean-Claude G Bünzli
- Institute of Molecular and Biological Chemistry, Swiss Federal Institute of Technology, BCH 1402, CH-1015 Lausanne, Switzerland.
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Subhan MA, Suzuki T, Kaizaki S. Solution NIR CD and MCD in 4f–4f transitions of a series of chiral 3d–4f dinuclear complexes: X-ray structures of (Λ-Δ)-[(acac)2CrIII(μ-ox)LnIII(HBpz3)2] (Ln = Sm, Ho and Er). ACTA ACUST UNITED AC 2002. [DOI: 10.1039/b108770c] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Di Bari L, Pintacuda G, Salvadori P. Stereochemistry and Near-Infrared Circular Dichroism of a Chiral Yb Complex. J Am Chem Soc 2000. [DOI: 10.1021/ja994290z] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lorenzo Di Bari
- Contribution from the Dipartimento di Chimica e Chimica Industriale, Centro di Studio del CNR per le Macromolecole Stereoordinate ed Otticamente Attive, Via Risorgimento 35, I-56126 Pisa, Italy, and Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa, Italy
| | - Guido Pintacuda
- Contribution from the Dipartimento di Chimica e Chimica Industriale, Centro di Studio del CNR per le Macromolecole Stereoordinate ed Otticamente Attive, Via Risorgimento 35, I-56126 Pisa, Italy, and Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa, Italy
| | - Piero Salvadori
- Contribution from the Dipartimento di Chimica e Chimica Industriale, Centro di Studio del CNR per le Macromolecole Stereoordinate ed Otticamente Attive, Via Risorgimento 35, I-56126 Pisa, Italy, and Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa, Italy
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Babailov SP, Krieger YG. NMR methods for molecular structure studies of paramagnetic lanthanide complexes in solutions. Applications to crown ether complexes. J STRUCT CHEM+ 1998. [DOI: 10.1007/bf02903634] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Hopkins TA, Bolender JP, Metcalf DH, Richardson FS. Polarized Optical Absorption and Emission Spectra and the Electronic Energy-Level Structure of Tb(dpa)33- Complexes in Na3[Yb0.95Tb0.05(dpa)3]·NaClO4·10H2O. Inorg Chem 1996. [DOI: 10.1021/ic9515259] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Todd A. Hopkins
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22901
| | - James P. Bolender
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22901
| | - David H. Metcalf
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22901
| | - F. S. Richardson
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22901
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Misra SN, Mehta SB. Ligand-Mediated Pseudohypersensitivity of Some 4f–4f Transitions in Neodymium(III) Interaction with Fluorinated Nucleic Acid Components. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1991. [DOI: 10.1246/bcsj.64.3653] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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22
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Some new aspects of lanthanide optical spectroscopy: circular dichroism and two-photon absorption. J CHEM SCI 1990. [DOI: 10.1007/bf02841940] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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23
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Coordination chemistry of f-block elements with imine acids. Part IV. Synthetic and chiroptical studies on lanthanide(III) complexes of imine acids derived from L-alanine, L-valine, L-tyrosine and L-glutamic acid. TRANSIT METAL CHEM 1990. [DOI: 10.1007/bf01032232] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Spectroscopic properties of Ho3+ complexes with dipicolinic acid in solufion and single crystals. Inorganica Chim Acta 1989. [DOI: 10.1016/s0020-1693(00)83131-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Circularly polarized luminescence spectroscopy of mixed-ligand complexes of europium(III) with 2,6-pyridine-dicarboxyclic acid and L-malic acid. Inorganica Chim Acta 1987. [DOI: 10.1016/s0020-1693(00)85914-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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28
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Dye laser circular dichroism and absorption of the optically active Na3(Nd( C4H4O5)3]·2NaClO4·6H2O single crystal. Chem Phys Lett 1987. [DOI: 10.1016/0009-2614(87)87203-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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29
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Okamoto Y. Synthesis, Characterization, and Applications of Polymers Containing Lanthanide Metals. ACTA ACUST UNITED AC 1987. [DOI: 10.1080/00222338708074461] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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30
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Okawa H, Nakamura M, Shuin Y, Kida S. High Stereoselectivity of Tris[4-(l-menthyloxy)-1-(p-tolyl)-1,3-butandionato]lanthanoid(III). BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1986. [DOI: 10.1246/bcsj.59.3657] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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31
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Carter R, Miller C, Palmer R, May P, Metcalf D, Richardson F. Circularly polarized luminescence (CPL) spectra of Samarium(III) in trigonal Na3[Sm(oxydiacetate)3]· 2NaClO4·6H2O. Chem Phys Lett 1986. [DOI: 10.1016/0009-2614(86)80513-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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32
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Rosenthal LS, Nelson DJ. 155Eu3+ as a probe of metal ion and cationic drug binding sites on native and heat-denatured DNA. Inorganica Chim Acta 1986. [DOI: 10.1016/s0020-1693(00)82093-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Spaulding L, Brittain HG. Circularly polarized luminescence studies of the ternary complexes formed by Tb(III) with (S,S)-ethylenediamine-N,N′-disuccinic acid and achiral substrate ligands. Inorganica Chim Acta 1985. [DOI: 10.1016/s0020-1693(00)82307-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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34
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Brittain HG, Chan C. Circularly polarized luminescence studies of the adducts formed with mix-ligand Eu(III) β-diketone complexes and dimethyl sulfoxide or N,N-dimethyl formamide. Polyhedron 1985. [DOI: 10.1016/s0277-5387(00)84219-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Nakamura M, Okawa H, Kida S, Misumi S. Noncovalent Interactions in Metal Complexes. VIII. Syntheses, Properties, and Stereoselectivities of Lanthanoid Complexes with 1-l-Menthyloxy-3-benzoylacetone. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1984. [DOI: 10.1246/bcsj.57.3147] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Brittain HG, Fineman RI. Circularly polarized luminescence studies of the adducts formed with Eu(III) β-diketone complexes and (—)-sparteine. Inorganica Chim Acta 1984. [DOI: 10.1016/s0020-1693(00)87471-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Brittain HG, Ransom M. Circularly polarized luminescence studies of the ternary complexes formed by Tb(III) aminopolycarboxylates and (R,R)-tartaric acid. Inorganica Chim Acta 1984. [DOI: 10.1016/s0020-1693(00)87374-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Brittain HG, Rispoli L. Studies of the pfeiffer effect induced in tris(pyridine-2,6-dicarboxylate)Tb(III) by histidine derivatives. Polyhedron 1984. [DOI: 10.1016/s0277-5387(00)88062-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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