1
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Kormschikov ID, Polovkova MA, Kirakosyan GA, Martynov AG, Gorbunova YG, Tsivadze AY. Magnetic Anisotropy of Homo- and Heteronuclear Terbium(III) and Dysprosium(III) Trisphthalocyaninates Derived from Paramagnetic 1H-NMR Investigation. Molecules 2024; 29:510. [PMID: 38276588 PMCID: PMC11154240 DOI: 10.3390/molecules29020510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 01/13/2024] [Accepted: 01/18/2024] [Indexed: 01/27/2024] Open
Abstract
1H-NMR spectroscopy of lanthanide complexes is a powerful tool for deriving spectral-structural correlations, which provide a clear link between the symmetry of the coordination environment of paramagnetic metal centers and their magnetic properties. In this work, we have first synthesized a series of homo- (M = M* = Dy) and heteronuclear (M ≠ M* = Dy/Y and Dy/Tb) triple-decker complexes [(BuO)8Pc]M[(BuO)8Pc]M*[(15C5)4Pc], where BuO- and 15C5- are, respectively, butoxy and 15-crown-5 substituents on phthalocyanine (Pc) ligands. We provide an algorithmic approach to assigning the 1H-NMR spectra of these complexes and extracting the axial component of the magnetic susceptibility tensor, χax. We show how this term is related to the nature of the lanthanide ion and the shape of its coordination polyhedron, providing an experimental basis for further theoretical interpretation of the revealed correlations.
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Affiliation(s)
- Ilya D. Kormschikov
- Faculty of Chemistry, Lomonosov Moscow State University, GSP-1, Leninskie Gory, 119991 Moscow, Russia;
| | - Marina A. Polovkova
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr., 31, Building 4, 119071 Moscow, Russia; (M.A.P.); (G.A.K.); (Y.G.G.); (A.Y.T.)
| | - Gayane A. Kirakosyan
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr., 31, Building 4, 119071 Moscow, Russia; (M.A.P.); (G.A.K.); (Y.G.G.); (A.Y.T.)
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky pr., 31, 119991 Moscow, Russia
| | - Alexander G. Martynov
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr., 31, Building 4, 119071 Moscow, Russia; (M.A.P.); (G.A.K.); (Y.G.G.); (A.Y.T.)
| | - Yulia G. Gorbunova
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr., 31, Building 4, 119071 Moscow, Russia; (M.A.P.); (G.A.K.); (Y.G.G.); (A.Y.T.)
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky pr., 31, 119991 Moscow, Russia
| | - Aslan Yu. Tsivadze
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr., 31, Building 4, 119071 Moscow, Russia; (M.A.P.); (G.A.K.); (Y.G.G.); (A.Y.T.)
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky pr., 31, 119991 Moscow, Russia
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2
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Goren E, Iron MA, Diskin-Posner Y, Falkovich A, Avram L, Bar-Shir A. NMR exchange dynamics studies of metal-capped cyclodextrins reveal multiple populations of host-guest complexes in solution. Chem Sci 2023; 14:11351-11358. [PMID: 37886095 PMCID: PMC10599603 DOI: 10.1039/d3sc03630h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 09/04/2023] [Indexed: 10/28/2023] Open
Abstract
Metal-capped molecular hosts are unique in supramolecular chemistry, benefitting from the inner cavity's hydrophobic nature and the metal center's electrochemical properties. It is shown here that the paramagnetic properties of the metals in lanthanide-capped cyclodextrins (Ln-α-CDs and Ln-β-CDs) are a convenient NMR indicator for different populations of host-guest complexes in a given solution. The paramagnetic guest exchange saturation transfer (paraGEST) method was used to study the exchange dynamics in systems composed of Ln-α-CDs or Ln-β-CDs with fluorinated guests, revealing multiple co-existing populations of host-guest complexes exclusively in solutions containing Ln-β-CDs. The enhanced spectral resolution of paraGEST, achieved by a strong pseudo contact shift induction, revealed that different molecular guests can adopt multiple orientations within Ln-β-CDs' cavities and, in contrast, only a single orientation inside Ln-α-CDs. Thus, paraGEST, which can significantly improve NMR detectability and spectral resolution of host-guest systems that experience fast exchange dynamics, is a convenient tool for studying supramolecular systems of metal-capped molecular hosts.
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Affiliation(s)
- Elad Goren
- Department of Molecular Chemistry and Materials Science, Weizmann Institute of Science Rehovot 7610001 Israel
| | - Mark A Iron
- Department of Chemical Research Support, Weizmann Institute of Science Rehovot 7610001 Israel
| | - Yael Diskin-Posner
- Department of Chemical Research Support, Weizmann Institute of Science Rehovot 7610001 Israel
| | - Alla Falkovich
- Department of Chemical Research Support, Weizmann Institute of Science Rehovot 7610001 Israel
| | - Liat Avram
- Department of Chemical Research Support, Weizmann Institute of Science Rehovot 7610001 Israel
| | - Amnon Bar-Shir
- Department of Molecular Chemistry and Materials Science, Weizmann Institute of Science Rehovot 7610001 Israel
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3
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Islam MA, Berthon C, Jung J, Bolvin H. Bonding and Magnetic Trends in the [An III(DPA) 3] 3- Series Compared to the Ln(III) and An(IV) Analogues. Inorg Chem 2023; 62:17254-17264. [PMID: 37818639 DOI: 10.1021/acs.inorgchem.3c02482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/12/2023]
Abstract
The crystal field parameters are determined from first-principles calculations in the [AnIII(DPA)3]3- series, completing previous work on the [LnIII(DPA)3]3- and [AnIV(DPA)3]2- series. The crystal field strength parameter follows the Ln(III) < An(III) < An(IV) trend. The parameters deduced at the orbital level decrease along the series, while J-mixing strongly impacts the many-electron parameters, especially for the Pu(III) complex. We further compile the available data for the three series. In some aspects, An(III) complexes are closer to Ln(III) than to An(IV) complexes with regard to the geometrical structure and bonding descriptors. At the beginning of the series, up to Pu(III), there is a quantitative departure from the free ion, especially for the Pa(III) complex. The magnetic properties of the actinides keep the trends of the lanthanides; in particular, the axial magnetic susceptibility follows Bleaney's theory qualitatively.
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Affiliation(s)
- Md Ashraful Islam
- Laboratoire de Chimie et Physique Quantiques, CNRS, Université Toulouse III, 118 Route de Narbonne, 31062 Toulouse, France
| | - Claude Berthon
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, 30207 Bagnols-sur-Cèze, France
| | - Julie Jung
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Hélène Bolvin
- Laboratoire de Chimie et Physique Quantiques, CNRS, Université Toulouse III, 118 Route de Narbonne, 31062 Toulouse, France
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4
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Regincós Martí E, Canaj AB, Sharma T, Celmina A, Wilson C, Rajaraman G, Murrie M. Importance of an Axial Ln III-F Bond across the Lanthanide Series and Single-Molecule Magnet Behavior in the Ce and Nd Analogues. Inorg Chem 2022; 61:9906-9917. [PMID: 35727882 PMCID: PMC9275778 DOI: 10.1021/acs.inorgchem.2c00556] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
The recently reported
compound [DyIIILF](CF3SO3)2·H2O (L = 1,4,7,10-tetrakis(2-pyridylmethyl)-1,4,7,10-tetraaza-cyclododecane)
displays a strong axial magnetic anisotropy, due to the short axial
Dy–F bond, and single-molecule magnet (SMM) behavior. Following
our earlier [DyIIILF]2+ work, herein we report
the systematic structural and magnetic study of a family of [LnIIILF](CF3SO3)2·H2O compounds (Ln(III) = 1-Ce, 2-Pr, 3-Nd, 4-Eu, 5-Tb, 6-Ho, 7-Er, 8-Tm, and 9-Yb).
From this series, the Ce(III) and Nd(III) analogues show slow relaxation
of the magnetization under an applied direct current magnetic field,
which is modeled using a Raman process. Complete active space self-consistent
field theoretical calculations are employed to understand the relaxation
pathways in 1-Ce and 3-Nd and also reveal
a large tunnel splitting for 5-Tb. Additional computational
studies on model compounds where we remove the axial F– ligand, or replace F– with I–, highlight the importance of the F– ligand in
creating a strong axial crystal field for 1-Ce and 3-Nd and for promoting the SMM behavior. Importantly, this
systematic study provides insight into the magnetic properties of
these lighter lanthanide ions. The
structural and magnetic properties of a family of [LnIIILF](CF3SO3)2·H2O
(L = 1,4,7,10-tetrakis(2-pyridylmethyl)-1,4,7,10-tetraaza-cyclododecane)
compounds are reported. In addition to the previously reported Dy(III)
analogue, we find that the Ce(III) and Nd(III) analogues show slow
relaxation of the magnetization due to the strong axial magnetic anisotropy
created by the axial F− ligand. AC magnetic susceptibility
data and CASSCF theoretical calculations are employed to understand
the single-molecule magnet behavior of 1-Ce and 3-Nd.
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Affiliation(s)
- Emma Regincós Martí
- School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ, U.K
| | - Angelos B Canaj
- School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ, U.K
| | - Tanu Sharma
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra 400076, India
| | - Anna Celmina
- School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ, U.K
| | - Claire Wilson
- School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ, U.K
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra 400076, India
| | - Mark Murrie
- School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ, U.K
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5
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Bodman SE, Breen C, Plasser F, Butler SJ. Impact of Varying the Phenylboronic Acid Position in Macrocyclic Eu(III) Complexes on the Recognition of Adenosine Monophosphate. Org Chem Front 2022. [DOI: 10.1039/d2qo01067d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The selective recognition of anions in water by artificial receptors remains a significant research challenge. The creation of a receptor selective for adenosine monophosphate (AMP) is particularly difficult due to...
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6
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Ślepokura K, Cabreros TA, Muller G, Lisowski J. Sorting Phenomena and Chirality Transfer in Fluoride-Bridged Macrocyclic Rare Earth Complexes. Inorg Chem 2021; 60:18442-18454. [PMID: 34784708 PMCID: PMC8653217 DOI: 10.1021/acs.inorgchem.1c03034] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Indexed: 11/28/2022]
Abstract
The reaction of fluoride anions with mononuclear lanthanide(III) and yttrium(III) hexaaza-macrocyclic complexes results in the formation of dinuclear fluoride-bridged complexes. As indicated by X-ray crystal structures, in these complexes two metal ions bound by the macrocycles are linked by two or three bridging fluoride anions, depending on the type of the macrocycle. In the case of the chiral hexaaza-macrocycle L1 derived from trans-1,2-diaminocyclohexane, the formation of these μ2-fluorido dinuclear complexes is accompanied by enantiomeric self-recognition of macrocyclic units. In contrast, this kind of recognition is not observed in the case of complexes of the chiral macrocycle L2 derived from 1,2-diphenylethylenediamine. The reaction of fluoride with a mixture of mononuclear complexes of L1 and L2, containing two different Ln(III) ions, results in narcissistic sorting of macrocyclic units. Conversely, a similar reaction involving mononuclear complexes of L1 and complexes of achiral macrocycle L3 based on ethylenediamine results in sociable sorting of macrocyclic units and preferable formation of heterodinuclear complexes. In addition, formation of these heterodinuclear complexes is accompanied by chirality transfer from the chiral macrocycle L1 to the achiral macrocycle L3 as indicated by CPL and CD spectra.
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Affiliation(s)
- Katarzyna Ślepokura
- Department
of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland
| | - Trevor A. Cabreros
- Department
of Chemistry, San José State University, One Washington Square, San José, California 95192-0101, United States
| | - Gilles Muller
- Department
of Chemistry, San José State University, One Washington Square, San José, California 95192-0101, United States
| | - Jerzy Lisowski
- Department
of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland
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7
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Novikov VV, Nelyubina YV. Modern physical methods for the molecular design of single-molecule magnets. RUSSIAN CHEMICAL REVIEWS 2021. [DOI: 10.1070/rcr5002] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Abstract
Many paramagnetic metal complexes have emerged as unique magnetic materials (single-molecule magnets), which behave as conventional magnets at the single-molecule level, thereby making it possible to use them in modern devices for data storage and processing. The rational design of these complexes, however, requires a deep understanding of the physical laws behind a single-molecule magnet behaviour, the mechanisms of magnetic relaxation that determines the magnetic properties and the relationship of these properties with the structure of single-molecule magnets. This review focuses on the physical methods providing such understanding, including different versions and various combinations of magnetometry, electron paramagnetic and nuclear magnetic resonance spectroscopy, optical spectroscopy and X-ray diffraction. Many of these methods are traditionally used to determine the composition and structure of new chemical compounds. However, they are rarely applied to study molecular magnetism.
The bibliography includes 224 references.
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8
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Parker D, Suturina EA, Kuprov I, Chilton NF. How the Ligand Field in Lanthanide Coordination Complexes Determines Magnetic Susceptibility Anisotropy, Paramagnetic NMR Shift, and Relaxation Behavior. Acc Chem Res 2020; 53:1520-1534. [PMID: 32667187 PMCID: PMC7467575 DOI: 10.1021/acs.accounts.0c00275] [Citation(s) in RCA: 85] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Indexed: 01/27/2023]
Abstract
Complexes of lanthanide(III) ions are being actively studied because of their unique ground and excited state properties and the associated optical and magnetic behavior. In particular, they are used as emissive probes in optical spectroscopy and microscopy and as contrast agents in magnetic resonance imaging (MRI). However, the design of new complexes with specific optical and magnetic properties requires a thorough understanding of the correlation between molecular structure and electric and magnetic susceptibilities, as well as their anisotropies. The traditional Judd-Ofelt-Mason theory has failed to offer useful guidelines for systematic design of emissive lanthanide optical probes. Similarly, Bleaney's theory of magnetic anisotropy and its modifications fail to provide accurate detail that permits new paramagnetic shift reagents to be designed rather than discovered.A key determinant of optical and magnetic behavior in f-element compounds is the ligand field, often considered as an electrostatic field at the lanthanide created by the ligands. The resulting energy level splitting is a sensitive function of several factors: the nature and polarizability of the whole ligand and its donor atoms; the geometric details of the coordination polyhedron; the presence and extent of solvent interactions; specific hydrogen bonding effects on donor atoms and the degree of supramolecular order in the system. The relative importance of these factors can vary widely for different lanthanide ions and ligands. For nuclear magnetic properties, it is both the ligand field splitting and the magnetic susceptibility tensor, notably its anisotropy, that determine paramagnetic shifts and nuclear relaxation enhancement.We review the factors that control the ligand field in lanthanide complexes and link these to aspects of their utility in magnetic resonance and optical emission spectroscopy and imaging. We examine recent progress in this area particularly in the theory of paramagnetic chemical shift and relaxation enhancement, where some long-neglected effects of zero-field splitting, magnetic susceptibility anisotropy, and spatial distribution of lanthanide tags have been accommodated in an elegant way.
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Affiliation(s)
- David Parker
- Department
of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K.
| | | | - Ilya Kuprov
- School
of Chemistry, University of Southampton, Southampton SO17 1BJ, U.K.
| | - Nicholas F. Chilton
- Department
of Chemistry, School of Natural Sciences, The University of Manchester, Manchester M13 9PL, U.K.
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9
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Xu YK, Li H, He BG, Cheng ZP, Zhang WB. Electronic Structure and Magnetic Anisotropy of Single-Layer Rare-Earth Oxybromide. ACS OMEGA 2020; 5:14194-14201. [PMID: 32566888 PMCID: PMC7301551 DOI: 10.1021/acsomega.0c02265] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 05/21/2020] [Indexed: 05/21/2023]
Abstract
The discovery of intrinsic magnetism in two-dimensional (2D) limit has triggered increasing investigations in layered magnetic materials. However, most of the available candidates involves 3d transition metals, while the layered rare-earth magnetic materials are largely unexplored at present. Here, we proposed a series of 2D rare-earth magnetic semiconductors REOBr (RE = Tb, Dy, Ho, Er and Tm) with large magnetic moments and magnetic anisotropy energies using the PBE + U method. Our calculations indicate a half-metallic meta-stable state and a low-energy semi-conducting ground state in these 4f single-layers, which can be characterized by the location of the two-fold degenerate x(x 2 - 3y 2) orbital. The dynamical stability of single-layer REOBr is further confirmed using phonon dispersions. The predicted energy gaps ranging from 2.47 to 4.26 eV decrease with the atomic number of the rare-earth element. Meanwhile, very large spin moments and orbital moments up to 6.018 and 2.872 μB are found, which seem to be insensitive to the magnetic state. Furthermore, the magnetic anisotropy energies are evaluated and understood by a fourth-order non-uniaxial anisotropy mode. Diverse anisotropy energy landscapes including easy cone, easy plane, and easy axis are found, and an extremely high magnetic anisotropy energy of about 8 meV per RE atom is found in the single-layer DyOBr. Our investigations provide a unique insight into layered rare-earth magnetic materials and suggest the single-layer REOBr as competing candidates for low-dimensional data storage applications.
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Affiliation(s)
- Yuan-Kai Xu
- Hunan Provincial Key Laboratory of
Flexible Electronic Materials Genome Engineering, School of Physics
and Electronic Sciences, Changsha University
of Science and Technology, Changsha 410114, People’s Republic of China
| | - Hongxing Li
- Hunan Provincial Key Laboratory of
Flexible Electronic Materials Genome Engineering, School of Physics
and Electronic Sciences, Changsha University
of Science and Technology, Changsha 410114, People’s Republic of China
| | - Bin-Guang He
- Hunan Provincial Key Laboratory of
Flexible Electronic Materials Genome Engineering, School of Physics
and Electronic Sciences, Changsha University
of Science and Technology, Changsha 410114, People’s Republic of China
| | - Zi-Peng Cheng
- Hunan Provincial Key Laboratory of
Flexible Electronic Materials Genome Engineering, School of Physics
and Electronic Sciences, Changsha University
of Science and Technology, Changsha 410114, People’s Republic of China
| | - Wei-Bing Zhang
- Hunan Provincial Key Laboratory of
Flexible Electronic Materials Genome Engineering, School of Physics
and Electronic Sciences, Changsha University
of Science and Technology, Changsha 410114, People’s Republic of China
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10
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Wydra K, Kobyłka MJ, Lis T, Ślepokura K, Lisowski J. Versatile Binding Modes of Chiral Macrocyclic Amine towards Rare Earth Ions. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000247] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Karol Wydra
- Department of Chemistry University of Wrocław 14 F. Joliot‐Curie 50‐383 Wrocław Poland
| | - Michał J. Kobyłka
- Department of Chemistry University of Wrocław 14 F. Joliot‐Curie 50‐383 Wrocław Poland
| | - Tadeusz Lis
- Department of Chemistry University of Wrocław 14 F. Joliot‐Curie 50‐383 Wrocław Poland
| | - Katarzyna Ślepokura
- Department of Chemistry University of Wrocław 14 F. Joliot‐Curie 50‐383 Wrocław Poland
| | - Jerzy Lisowski
- Department of Chemistry University of Wrocław 14 F. Joliot‐Curie 50‐383 Wrocław Poland
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11
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Ramakrishnam Raju MV, Wilharm RK, Dresel MJ, McGreal ME, Mansergh JP, Marting ST, Goodpaster JD, Pierre VC. The Stability of the Complex and the Basicity of the Anion Impact the Selectivity and Affinity of Tripodal Gadolinium Complexes for Anions. Inorg Chem 2019; 58:15189-15201. [DOI: 10.1021/acs.inorgchem.9b02133] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
| | - Randall K. Wilharm
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Mark J. Dresel
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Meghan E. McGreal
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Jarrett P. Mansergh
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Spenser T. Marting
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Jason D. Goodpaster
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Valérie C. Pierre
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
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12
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Harnden AC, Suturina EA, Batsanov AS, Senanayake PK, Fox MA, Mason K, Vonci M, McInnes EJL, Chilton NF, Parker D. Unravelling the Complexities of Pseudocontact Shift Analysis in Lanthanide Coordination Complexes of Differing Symmetry. Angew Chem Int Ed Engl 2019; 58:10290-10294. [DOI: 10.1002/anie.201906031] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Alice C. Harnden
- Department of ChemistryDurham University South Road Durham DH1 3LE UK
| | | | | | | | - Mark A. Fox
- Department of ChemistryDurham University South Road Durham DH1 3LE UK
| | - Kevin Mason
- Department of ChemistryDurham University South Road Durham DH1 3LE UK
| | - Michele Vonci
- School of Chemistry and Photon Science InstituteThe University of Manchester Oxford Road Manchester M13 9PL UK
| | - Eric J. L. McInnes
- School of Chemistry and Photon Science InstituteThe University of Manchester Oxford Road Manchester M13 9PL UK
| | - Nicholas F. Chilton
- School of Chemistry and Photon Science InstituteThe University of Manchester Oxford Road Manchester M13 9PL UK
| | - David Parker
- Department of ChemistryDurham University South Road Durham DH1 3LE UK
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13
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Harnden AC, Suturina EA, Batsanov AS, Senanayake PK, Fox MA, Mason K, Vonci M, McInnes EJL, Chilton NF, Parker D. Unravelling the Complexities of Pseudocontact Shift Analysis in Lanthanide Coordination Complexes of Differing Symmetry. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201906031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Alice C. Harnden
- Department of ChemistryDurham University South Road Durham DH1 3LE UK
| | | | | | | | - Mark A. Fox
- Department of ChemistryDurham University South Road Durham DH1 3LE UK
| | - Kevin Mason
- Department of ChemistryDurham University South Road Durham DH1 3LE UK
| | - Michele Vonci
- School of Chemistry and Photon Science InstituteThe University of Manchester Oxford Road Manchester M13 9PL UK
| | - Eric J. L. McInnes
- School of Chemistry and Photon Science InstituteThe University of Manchester Oxford Road Manchester M13 9PL UK
| | - Nicholas F. Chilton
- School of Chemistry and Photon Science InstituteThe University of Manchester Oxford Road Manchester M13 9PL UK
| | - David Parker
- Department of ChemistryDurham University South Road Durham DH1 3LE UK
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14
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Lumpe H, Daumann LJ. Studies of Redox Cofactor Pyrroloquinoline Quinone and Its Interaction with Lanthanides(III) and Calcium(II). Inorg Chem 2019; 58:8432-8441. [DOI: 10.1021/acs.inorgchem.9b00568] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Henning Lumpe
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377 Munich, Germany
| | - Lena J. Daumann
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377 Munich, Germany
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15
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Götzke L, Schaper G, März J, Kaden P, Huittinen N, Stumpf T, Kammerlander KK, Brunner E, Hahn P, Mehnert A, Kersting B, Henle T, Lindoy LF, Zanoni G, Weigand JJ. Coordination chemistry of f-block metal ions with ligands bearing bio-relevant functional groups. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.01.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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16
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17
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Autillo M, Guerin L, Dumas T, Grigoriev MS, Fedoseev AM, Cammelli S, Solari PL, Guillaumont D, Guilbaud P, Moisy P, Bolvin H, Berthon C. Insight of the Metal-Ligand Interaction in f-Element Complexes by Paramagnetic NMR Spectroscopy. Chemistry 2019; 25:4435-4451. [PMID: 30815930 DOI: 10.1002/chem.201805858] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 01/14/2019] [Indexed: 02/05/2023]
Abstract
The magnetic properties of LnIII and AnIII complexes formed with dipicolinate ligands have been studied by NMR spectroscopy. To know precisely the geometries of these complexes, a crystallographic study by single-crystal X-ray diffraction (XRD) and extended X-ray absorption fine structure (EXAFS) in solution was performed. Several methods to separate the paramagnetic shifts observed in the NMR spectra were applied to these complexes. Methods using a number of nuclei of the dipicolinate ligands revealed an abrupt change in the geometries of the complexes and a metal-ligand interaction in the middle of the lanthanide series. A study of the variation of the paramagnetic shifts with temperature demonstrated that higher-order terms of the dipolar and contact contributions are required, especially for the lightest LnIII and almost all the studied AnIII . Bleaney's parameters <Sz >a and C a D relating to the contact and dipolar terms, respectively, were deduced from experimental data and compared with the results of ab initio calculations. Quite a good agreement was found for the temperature dependencies of <Sz >a and C a D . However, the C a D values obtained from cation magnetic anisotropy calculations showed some discrepancies with the values derived from Bleaney's equation defined for LnIII . Other parameters, such as the crystal field parameter and the hyperfine constants Fi obtained from the experimental data of the [An(ethyl-dpa)3 ]3- complexes (ethyl-dpa=4-ethyl-2,6-dipicolinic acid), are at odds with the assumptions underlying Bleaney's theory.
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Affiliation(s)
- Matthieu Autillo
- CEA, Nuclear Energy Division, Research Department of Mining, and Fuel Recycling Processes, BP 17171, F-30207, Bagnols sur Cèze, France
| | - Laetitia Guerin
- CEA, Nuclear Energy Division, Research Department of Mining, and Fuel Recycling Processes, BP 17171, F-30207, Bagnols sur Cèze, France
| | - Thomas Dumas
- CEA, Nuclear Energy Division, Research Department of Mining, and Fuel Recycling Processes, BP 17171, F-30207, Bagnols sur Cèze, France
| | - Mikhail S Grigoriev
- A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow, 119071, Russia
| | - Alexandre M Fedoseev
- A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow, 119071, Russia
| | - Sebastiano Cammelli
- Synchrotron SOLEIL, L'orme des Merisiers, Saint Aubins, BP 48, F-91192, Gif sur Yvette cedex, France
| | - Pier Lorenzo Solari
- Synchrotron SOLEIL, L'orme des Merisiers, Saint Aubins, BP 48, F-91192, Gif sur Yvette cedex, France
| | - Dominique Guillaumont
- CEA, Nuclear Energy Division, Research Department of Mining, and Fuel Recycling Processes, BP 17171, F-30207, Bagnols sur Cèze, France
| | - Philippe Guilbaud
- CEA, Nuclear Energy Division, Research Department of Mining, and Fuel Recycling Processes, BP 17171, F-30207, Bagnols sur Cèze, France
| | - Philippe Moisy
- CEA, Nuclear Energy Division, Research Department of Mining, and Fuel Recycling Processes, BP 17171, F-30207, Bagnols sur Cèze, France
| | - Hélène Bolvin
- Laboratoire de Physique et de Chimie Quantiques, Université Toulouse 3, 118 Route de Narbonne, 31062, Toulouse, France
| | - Claude Berthon
- CEA, Nuclear Energy Division, Research Department of Mining, and Fuel Recycling Processes, BP 17171, F-30207, Bagnols sur Cèze, France
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18
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Li M, Ren G, Wang F, Li Z, Yang W, Gu D, Wang Y, Zhu G, Pan Q. Two metal–organic zeolites for highly sensitive and selective sensing of Tb3+. Inorg Chem Front 2019. [DOI: 10.1039/c8qi01406j] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Two metal–organic zeolites can sensitize the luminescence of the Tb3+ ion by energy transfer between the host frameworks and the guest Tb3+ ion, thus serving as Tb3+ ion sensors.
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Affiliation(s)
- Meiling Li
- Key Laboratory of Advanced Materials of Tropical Island Resources
- Ministry of Education
- College of Materials and Chemical Engineering
- Hainan University
- Haikou
| | - Guojian Ren
- Key Laboratory of Advanced Materials of Tropical Island Resources
- Ministry of Education
- College of Materials and Chemical Engineering
- Hainan University
- Haikou
| | - Fuxiang Wang
- Key Laboratory of Advanced Materials of Tropical Island Resources
- Ministry of Education
- College of Materials and Chemical Engineering
- Hainan University
- Haikou
| | - Zhimeng Li
- Key Laboratory of Advanced Materials of Tropical Island Resources
- Ministry of Education
- College of Materials and Chemical Engineering
- Hainan University
- Haikou
| | - Weiting Yang
- Key Laboratory of Advanced Materials of Tropical Island Resources
- Ministry of Education
- College of Materials and Chemical Engineering
- Hainan University
- Haikou
| | - Dongxu Gu
- Key Laboratory of Advanced Materials of Tropical Island Resources
- Ministry of Education
- College of Materials and Chemical Engineering
- Hainan University
- Haikou
| | - Yinghui Wang
- A State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Guangshan Zhu
- College of Chemistry
- Northeast Normal University
- Changchun
- PR China
| | - Qinhe Pan
- Key Laboratory of Advanced Materials of Tropical Island Resources
- Ministry of Education
- College of Materials and Chemical Engineering
- Hainan University
- Haikou
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19
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Abstract
The hypersensitive2F5/2to2F7/2transition of Yb3+can be used to monitor perturbations of the coordination sphere in ytterbium(iii) complexes.
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Affiliation(s)
| | - David Parker
- Department of Chemistry
- Durham University
- Durham
- UK
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20
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Su QQ, Fan K, Jin XX, Huang XD, Cheng SC, Luo LJ, Li YJ, Xiang J, Ko CC, Zheng LM, Lau TC. Syntheses, crystal structures and magnetic properties of a series of luminescent lanthanide complexes containing neutral tetradentate phenanthroline-amide ligands. Inorg Chem Front 2019. [DOI: 10.1039/c9qi00238c] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Six lanthanide compounds have been prepared from a neutral tetra-dentate ligand. Their luminescent and magnetic properties were investigated in detail.
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21
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Sørensen TJ, Faulkner S. Multimetallic Lanthanide Complexes: Using Kinetic Control To Define Complex Multimetallic Arrays. Acc Chem Res 2018; 51:2493-2501. [PMID: 30222311 DOI: 10.1021/acs.accounts.8b00205] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Kinetically inert lanthanide complexes are proving to be highly effective building blocks for the preparation of complex heterometallic architectures, allowing complete control of metal ion domains, which cannot be achieved under thermodynamic control. Kinetic stability may render perceivable labile coordination bonds more durable than several types of covalent interactions. For complexes in clinical use, the significance of kinetic stability cannot be overstated, and this Account treats the topic accordingly. Kinetically inert complexes can be used as building blocks for elaborate synthesis. For instance, it is now possible to prepare heterometallic lanthanide complexes containing two or more different lanthanide ions by linking kinetically robust complexes together. This approach can yield bimetallic (f-f' or d-f) and trimetallic (f-f'-f″) lanthanide complexes. In this Account, we describe our studies exploiting the slow dissociation of lanthanide complexes derived from 1,4,7,10-tetraazadodecane-1,4,7,10-tetraacetic acid (DOTA) related ligands to link complexes together through synthetic manipulation of pendent groups on the ligand skeleton or through coordination of bridging donor groups to a d-block metal center. In the course of this work, we have developed a variety of such methods, ranging from peptide coupling and diazotization to Ugi and click chemistry and have also explored the use of alternative strategies that combine orthogonal protecting group chemistry with sequential complexation of different lanthanide ions or that use self-assembly to deliver well-defined multimetallic systems. These well-defined bimetallic systems also have considerable scope for exploitation. Since the earliest studies, it has been clear that there is potential for application in the burgeoning field of molecular imaging. Heterometallic lanthanide complexes can be used as single-molecule bimodal imaging agents through incorporation of MRI active and luminescent components. Alternatively, conventional luminescence methods can be exploited in conjunction with lanthanide luminescence. In the simplest cases, a single lanthanide can be used to achieve a switchable response in combination with a transition metal complex. Bimetallic f-f' complexes allow the full potential of the approach to be realized in systems in which one lanthanide responds to changes in the concentration of an analyte, while a second lanthanide center can be used to define the concentration of the probe itself. This offers a new solution to the old dichotomy of ratiometric imaging that can potentially be applied widely.
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Affiliation(s)
- Thomas Just Sørensen
- Nano-Science Center & Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 København Ø, Denmark
| | - Stephen Faulkner
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
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22
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Poh AWJ, Aguilar JA, Kenwright AM, Mason K, Parker D. Aggregation of Rare Earth Coordination Complexes in Solution Studied by Paramagnetic and DOSY NMR. Chemistry 2018; 24:16170-16175. [DOI: 10.1002/chem.201803766] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Adeline W. J. Poh
- Department of Chemistry; Durham University; South Road Durham DH1 3LE UK
| | - Juan A. Aguilar
- Department of Chemistry; Durham University; South Road Durham DH1 3LE UK
| | - Alan M. Kenwright
- Department of Chemistry; Durham University; South Road Durham DH1 3LE UK
| | - Kevin Mason
- Department of Chemistry; Durham University; South Road Durham DH1 3LE UK
| | - David Parker
- Department of Chemistry; Durham University; South Road Durham DH1 3LE UK
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23
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Kreidt E, Arrico L, Zinna F, Di Bari L, Seitz M. Circularly Polarised Luminescence in Enantiopure Samarium and Europium Cryptates. Chemistry 2018; 24:13556-13564. [DOI: 10.1002/chem.201802196] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 06/15/2018] [Indexed: 01/04/2023]
Affiliation(s)
- Elisabeth Kreidt
- Institute of Inorganic Chemistry; University of Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Lorenzo Arrico
- Dipartimento di Chimica e Chimica Industriale; Università di Pisa; Via Moruzzi 13 56124 Pisa Italy
| | - Francesco Zinna
- Department of Organic Chemistry; University of Geneva; 30 quai Ernest Ansermet 1211 Geneva 4 Switzerland
| | - Lorenzo Di Bari
- Dipartimento di Chimica e Chimica Industriale; Università di Pisa; Via Moruzzi 13 56124 Pisa Italy
| | - Michael Seitz
- Institute of Inorganic Chemistry; University of Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
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24
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Wang Z, Zhou LP, Zhao TH, Cai LX, Guo XQ, Duan PF, Sun QF. Hierarchical Self-Assembly and Chiroptical Studies of Luminescent 4d–4f Cages. Inorg Chem 2018; 57:7982-7992. [DOI: 10.1021/acs.inorgchem.8b01152] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Zhuo Wang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, PR China
- University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Li-Peng Zhou
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, PR China
| | - Tong-Han Zhao
- CAS Center for Excellence in Nanoscience, Division of Nanophotonic, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology (NCNST), No. 11 ZhongGuanCun BeiYiTiao, Beijing 100190, PR China
| | - Li-Xuan Cai
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, PR China
| | - Xiao-Qing Guo
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, PR China
| | - Peng-Fei Duan
- CAS Center for Excellence in Nanoscience, Division of Nanophotonic, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology (NCNST), No. 11 ZhongGuanCun BeiYiTiao, Beijing 100190, PR China
| | - Qing-Fu Sun
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, PR China
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25
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Horii Y, Kishiue S, Damjanović M, Katoh K, Breedlove BK, Enders M, Yamashita M. Supramolecular Approach for Enhancing Single-Molecule Magnet Properties of Terbium(III)-Phthalocyaninato Double-Decker Complexes with Crown Moieties. Chemistry 2018; 24:4320-4327. [PMID: 29265595 DOI: 10.1002/chem.201705378] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Indexed: 11/10/2022]
Abstract
A TbIII -phthalocyaninato double-decker ([1]0 ) single-molecule magnet (SMM) having four 15-crown-5 moieties in one of the ligands was synthesized, and its dimerization and magnetic properties were studied in an attempt to utilize the supramolecular aggregation for enhancing the SMM properties. Aggregation of [1]0 to form [12 K4 ]4+ in the presence of K+ ions was studied by using UV/Vis-NIR absorption and NMR spectroscopies. For the magnetic measurements, [1]0 and [12 K4 ]4+ were dispersed in poly(methyl methacrylate) (PMMA). UV/Vis-NIR absorption measurements on the PMMA dispersed samples were used to track the formation of [12 K4 ]4+ . Direct current (DC) magnetic susceptibility measurements revealed that there were ferromagnetic Tb-Tb interactions in [12 K4 ]4+ , whereas there was no indication of ferromagnetic interactions in [1]0 . Upon the formation of [12 K4 ]4+ from [1]0 and K+ ions, the temperature at which the magnetic hysteresis occurred increased from 7 to 15 K. In addition, the area of magnetic hysteresis became larger for [12 K4 ]4+ , meaning that SMM properties of [12 K4 ]4+ are superior to those of [1]0 . Alternating current (AC) magnetic measurements were used to confirm this observation. Magnetic relaxation times at 2 K increased 1000-fold upon dimerization of [1]0 to [12 K4 ]4+ , demonstrating the effectiveness of using K+ ions to induce dimer formation for the improvement of the SMM properties.
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Affiliation(s)
- Yoji Horii
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3, Aramaki-Aza-Aoba, Aoba-ku, Sendai, 980-8578, Japan
| | - Shuhei Kishiue
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3, Aramaki-Aza-Aoba, Aoba-ku, Sendai, 980-8578, Japan
| | - Marko Damjanović
- Physikalisches Institut and Institute of Nanotechnology, Karlsruhe Institute of Technology, Wolfgang-Gaede-Strasse 1, Karlsruhe, 76131, Germany.,Institute of Inorganic Chemistry, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Keiichi Katoh
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3, Aramaki-Aza-Aoba, Aoba-ku, Sendai, 980-8578, Japan
| | - Brian K Breedlove
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3, Aramaki-Aza-Aoba, Aoba-ku, Sendai, 980-8578, Japan
| | - Markus Enders
- Institute of Inorganic Chemistry, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Masahiro Yamashita
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3, Aramaki-Aza-Aoba, Aoba-ku, Sendai, 980-8578, Japan.,WPI Research Center, Advanced Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan.,School of Materials Science and Engineering, Nankai University, Tianjin, 300350, China
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26
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Nielsen LG, Junker AKR, Sørensen TJ. Composed in the f-block: solution structure and function of kinetically inert lanthanide(iii) complexes. Dalton Trans 2018; 47:10360-10376. [DOI: 10.1039/c8dt01501e] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
An induction to the wonders of lanthanides, and a call for standardised methods for characterisation of lanthanide complexes in solution.
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Affiliation(s)
- Lea Gundorff Nielsen
- Nano-Science Center & Department of Chemistry
- University of Copenhagen
- 2100 København Ø
- Denmark
| | - Anne Kathrine R. Junker
- Nano-Science Center & Department of Chemistry
- University of Copenhagen
- 2100 København Ø
- Denmark
| | - Thomas Just Sørensen
- Nano-Science Center & Department of Chemistry
- University of Copenhagen
- 2100 København Ø
- Denmark
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27
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Mason K, Harnden AC, Patrick CW, Poh AWJ, Batsanov AS, Suturina EA, Vonci M, McInnes EJL, Chilton NF, Parker D. Exquisite sensitivity of the ligand field to solvation and donor polarisability in coordinatively saturated lanthanide complexes. Chem Commun (Camb) 2018; 54:8486-8489. [DOI: 10.1039/c8cc04995e] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The second coordination sphere determines ligand field in lanthanide coordination complexes.
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Affiliation(s)
- Kevin Mason
- Department of Chemistry
- Durham University
- Durham
- UK
| | | | | | | | | | | | - Michele Vonci
- School of Chemistry
- The University of Manchester
- Manchester
- UK
| | | | | | - David Parker
- Department of Chemistry
- Durham University
- Durham
- UK
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28
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Junker AKR, Deblonde GJP, Abergel RJ, Sørensen TJ. Investigating subtle 4f vs. 5f coordination differences using kinetically inert Eu(iii), Tb(iii), and Cm(iii) complexes of a coumarin-appended 1,4,7,10-tetraazacyclododecane-1,4,7-triacetate (DO3A) ligand. Dalton Trans 2018; 47:7362-7369. [DOI: 10.1039/c8dt01547c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Coumarin appended DO3A complexes of Cm(iii), Eu(iii), and Tb(iii) show that more than ionic radius determines the coordination chemistry of the f-elements.
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Affiliation(s)
- Anne Kathrine R. Junker
- Nano-Science Center & Department of Chemistry
- University of Copenhagen
- 2100 København Ø
- Denmark
| | | | - Rebecca J. Abergel
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
- Department of Nuclear Engineering
| | - Thomas Just Sørensen
- Nano-Science Center & Department of Chemistry
- University of Copenhagen
- 2100 København Ø
- Denmark
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29
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Aletti AB, Gillen DM, Gunnlaugsson T. Luminescent/colorimetric probes and (chemo-) sensors for detecting anions based on transition and lanthanide ion receptor/binding complexes. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2017.06.020] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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30
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Jennings LB, Shuvaev S, Fox MA, Pal R, Parker D. Selective signalling of glyphosate in water using europium luminescence. Dalton Trans 2018; 47:16145-16154. [DOI: 10.1039/c8dt03823f] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Selective sensing of glyphosate in the micromolar regime in water.
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Affiliation(s)
| | | | - Mark A. Fox
- Department of Chemistry
- Durham University
- Durham
- UK
| | - Robert Pal
- Department of Chemistry
- Durham University
- Durham
- UK
| | - David Parker
- Department of Chemistry
- Durham University
- Durham
- UK
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31
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Hiller M, Krieg S, Ishikawa N, Enders M. Ligand-Field Energy Splitting in Lanthanide-Based Single-Molecule Magnets by NMR Spectroscopy. Inorg Chem 2017; 56:15285-15294. [PMID: 29200279 DOI: 10.1021/acs.inorgchem.7b02704] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A method for the experimental determination of ligand-field (LF) energy splitting in mononuclear lanthanide complexes, based purely on variable-temperature NMR spectroscopy, was developed. The application of this method in an isostructural series of anionic lanthanide bis(cyclooctatetraenide) double-decker compounds bearing large rigid substituents is demonstrated. Using the three-nuclei plot approach devised by Reilley, the isostructurality of the compound series and the identical orientation of the magnetic main axis of all Ln3+ ions in the series Tb3+ to Tm3+ are demonstrated. Measurement of the 2H NMR spectra of partially deuterated analogues of the complexes permitted determination of the axial magnetic susceptibility anisotropies χax for all five ions in the temperature range from 185 to 335 K. For this purpose, analysis of the hyperfine shifts was combined with structural models derived from density functional theory calculations. In a final step, the temperature dependence of the χax values was used for determination of the three axial LF parameters, adapting a method employed previously for phthalocyanine-based systems. The temperature dependence dictated by the LF parameters determined by this NMR-based approach is compared to the results of recently published ab initio calculations of the system, indicating reasonable agreement of both methods. For all ions except Dy3+, the NMR method determines the same mJ ground state as the calculations and the order and energies of the excited states match well. However, the sign of the magnetic anisotropy of the dysprosium complex in the temperature range evaluated here is not correctly predicted by the published calculations but can be described accurately by the NMR approach. This shows that our experimental method for determination of the LF parameters is an ideal complementation to other theoretical and experimental methods.
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Affiliation(s)
- Markus Hiller
- Institute of Inorganic Chemistry, Heidelberg University , Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Saskia Krieg
- Institute of Inorganic Chemistry, Heidelberg University , Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Naoto Ishikawa
- Department of Chemistry, Graduate School of Science, Osaka University , Toyonaka, Osaka 560-0043, Japan
| | - Markus Enders
- Institute of Inorganic Chemistry, Heidelberg University , Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
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32
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Perfetti M. Cantilever torque magnetometry on coordination compounds: from theory to experiments. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.08.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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33
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Suturina EA, Mason K, Geraldes CFGC, Kuprov I, Parker D. Beyond Bleaney's Theory: Experimental and Theoretical Analysis of Periodic Trends in Lanthanide-Induced Chemical Shift. Angew Chem Int Ed Engl 2017; 56:12215-12218. [DOI: 10.1002/anie.201706931] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 07/31/2017] [Indexed: 12/15/2022]
Affiliation(s)
- Elizaveta A. Suturina
- School of Chemistry; University of Southampton; Highfield Campus Southampton SO17 1BJ UK
| | - Kevin Mason
- Department of Chemistry; Durham University; South Road Durham DH1 3LE UK
| | - Carlos F. G. C. Geraldes
- Department of Life Sciences and Coimbra Chemistry Centre; Faculty of Science and Technology; University of Coimbra; 3000-456 Coimbra Portugal
| | - Ilya Kuprov
- School of Chemistry; University of Southampton; Highfield Campus Southampton SO17 1BJ UK
| | - David Parker
- Department of Chemistry; Durham University; South Road Durham DH1 3LE UK
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34
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Suturina EA, Mason K, Geraldes CFGC, Kuprov I, Parker D. Beyond Bleaney's Theory: Experimental and Theoretical Analysis of Periodic Trends in Lanthanide-Induced Chemical Shift. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706931] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Elizaveta A. Suturina
- School of Chemistry; University of Southampton; Highfield Campus Southampton SO17 1BJ UK
| | - Kevin Mason
- Department of Chemistry; Durham University; South Road Durham DH1 3LE UK
| | - Carlos F. G. C. Geraldes
- Department of Life Sciences and Coimbra Chemistry Centre; Faculty of Science and Technology; University of Coimbra; 3000-456 Coimbra Portugal
| | - Ilya Kuprov
- School of Chemistry; University of Southampton; Highfield Campus Southampton SO17 1BJ UK
| | - David Parker
- Department of Chemistry; Durham University; South Road Durham DH1 3LE UK
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35
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Atzeri C, Marzaroli V, Quaretti M, Travis JR, Di Bari L, Zaleski CM, Tegoni M. Elucidation of 1H NMR Paramagnetic Features of Heterotrimetallic Lanthanide(III)/Manganese(III) 12-MC-4 Complexes. Inorg Chem 2017; 56:8257-8269. [PMID: 28677961 DOI: 10.1021/acs.inorgchem.7b00970] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The paramagnetic one-dimensional 1H NMR spectra of twelve LnIIINaI(OAc)4[12-MCMnIII(N)shi-4] complexes, where LnIII is PrIII-YbIII (except PmIII) and YIII, are reported. Their solid-state isostructural nature is confirmed in methanol-d4 solution, as a similar pattern in the 1H NMR spectra is observed along the series. Notably, a relatively well-resolved spectrum is reported for the GdIII complex. The chemical shift data are analyzed using the "all lanthanides" method, and the Fermi contact and pseudo-contact contributions are calculated for the lanthanide-induced shift (LIS). For the TbIII-YbIII complexes, the pseudo-contact contributions are typically 1 order of magnitude higher than the Fermi contact contributions; however, for the GdIII complex, the Fermi contact is the main contribution to the paramagnetic chemical shift. For the methyl protons of the axial acetate (-OAc) ligands, the LIS is opposite in sign, with respect to that of the aromatic salicylhydroximate (shi3-) protons, because of structural rearrangements that occur upon dissociation of the NaI cation in solution. The calculated crystal field parameters (BLn) for the TbIII (360 cm-1), DyIII (250 cm-1), HoIII (380 cm-1), ErIII (410 cm-1), TmIII (620 cm-1), and YbIII (380 cm-1) complexes are not constant, likely as a consequence of the inaccuracy of the Bleaney's constants and, to a smaller extent, the small structural changes that occur in solution. Overall, the metallacrown scaffold retains structural integrity and similarity in solution for the entire series; however, small structural features, which do not affect the overall similarity, do likely occur.
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Affiliation(s)
- Corrado Atzeri
- Department of Chemistry, Life Sciences, and Environmental Sustainability, University of Parma , Parco Area delle Scienze 11A, 43124 Parma, Italy
| | - Vittoria Marzaroli
- Department of Chemistry, Life Sciences, and Environmental Sustainability, University of Parma , Parco Area delle Scienze 11A, 43124 Parma, Italy
| | - Martina Quaretti
- Department of Chemistry, Life Sciences, and Environmental Sustainability, University of Parma , Parco Area delle Scienze 11A, 43124 Parma, Italy
| | - Jordan R Travis
- Department of Chemistry and Biochemistry, Shippensburg University , Shippensburg, Pennsylvania 17257-2200, United States
| | - Lorenzo Di Bari
- Department of Chemistry and Industrial Chemistry, University of Pisa , Via Risorgimento 35, I-56126 Pisa, Italy
| | - Curtis M Zaleski
- Department of Chemistry and Biochemistry, Shippensburg University , Shippensburg, Pennsylvania 17257-2200, United States
| | - Matteo Tegoni
- Department of Chemistry, Life Sciences, and Environmental Sustainability, University of Parma , Parco Area delle Scienze 11A, 43124 Parma, Italy
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36
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Routledge JD, Zhang X, Connolly M, Tropiano M, Blackburn OA, Kenwright AM, Beer PD, Aldridge S, Faulkner S. Lanthanide Complexes that Respond to Changes in Cyanide Concentration in Water. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702296] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jack D. Routledge
- Inorganic Chemistry Laboratory, Department of Chemistry; University of Oxford; South Parks Road Oxford OX1 3QR UK
| | - Xuejian Zhang
- Inorganic Chemistry Laboratory, Department of Chemistry; University of Oxford; South Parks Road Oxford OX1 3QR UK
| | - Michael Connolly
- Inorganic Chemistry Laboratory, Department of Chemistry; University of Oxford; South Parks Road Oxford OX1 3QR UK
| | - Manuel Tropiano
- Inorganic Chemistry Laboratory, Department of Chemistry; University of Oxford; South Parks Road Oxford OX1 3QR UK
| | - Octavia A. Blackburn
- Inorganic Chemistry Laboratory, Department of Chemistry; University of Oxford; South Parks Road Oxford OX1 3QR UK
| | - Alan M. Kenwright
- Department of Chemistry; Durham University; Lower Mountjoy, South Road Durham DH1 3LE UK
| | - Paul D. Beer
- Inorganic Chemistry Laboratory, Department of Chemistry; University of Oxford; South Parks Road Oxford OX1 3QR UK
| | - Simon Aldridge
- Inorganic Chemistry Laboratory, Department of Chemistry; University of Oxford; South Parks Road Oxford OX1 3QR UK
| | - Stephen Faulkner
- Inorganic Chemistry Laboratory, Department of Chemistry; University of Oxford; South Parks Road Oxford OX1 3QR UK
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37
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Routledge JD, Zhang X, Connolly M, Tropiano M, Blackburn OA, Kenwright AM, Beer PD, Aldridge S, Faulkner S. Lanthanide Complexes that Respond to Changes in Cyanide Concentration in Water. Angew Chem Int Ed Engl 2017; 56:7783-7786. [PMID: 28497649 DOI: 10.1002/anie.201702296] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 04/14/2017] [Indexed: 11/08/2022]
Abstract
Cyanide ions are shown to interact with lanthanide complexes of phenacylDO3A derivatives in aqueous solution, giving rise to changes in the luminescence and NMR spectra. These changes are the consequence of cyanohydrin formation, which is favored by the coordination of the phenacyl carbonyl group to the lanthanide center. These complexes display minimal affinity for fluoride and can detect cyanide at concentrations less than 1 μm. By contrast, lanthanide complexes with DOTAM derivatives display no affinity for cyanide in water, but respond to changes in fluoride concentration.
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Affiliation(s)
- Jack D Routledge
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK
| | - Xuejian Zhang
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK
| | - Michael Connolly
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK
| | - Manuel Tropiano
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK
| | - Octavia A Blackburn
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK
| | - Alan M Kenwright
- Department of Chemistry, Durham University, Lower Mountjoy, South Road, Durham, DH1 3LE, UK
| | - Paul D Beer
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK
| | - Simon Aldridge
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK
| | - Stephen Faulkner
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK
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38
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Finney KLNA, Harnden AC, Rogers NJ, Senanayake PK, Blamire AM, O'Hogain D, Parker D. Simultaneous Triple Imaging with Two PARASHIFT Probes: Encoding Anatomical, pH and Temperature Information using Magnetic Resonance Shift Imaging. Chemistry 2017; 23:7976-7989. [DOI: 10.1002/chem.201700447] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 03/10/2017] [Indexed: 01/10/2023]
Affiliation(s)
| | - Alice C. Harnden
- Department of Chemistry; Durham University; South Road Durham DH1 3LE UK
| | - Nicola J. Rogers
- Department of Chemistry; Durham University; South Road Durham DH1 3LE UK
| | | | - Andrew M. Blamire
- Institute of Cellular Medicine and Newcastle MR Centre; Newcastle University; Newcastle upon Tyne NE4 5PL UK
| | - Dara O'Hogain
- Institute of Cellular Medicine and Newcastle MR Centre; Newcastle University; Newcastle upon Tyne NE4 5PL UK
| | - David Parker
- Department of Chemistry; Durham University; South Road Durham DH1 3LE UK
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39
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Mason K, Rogers NJ, Suturina EA, Kuprov I, Aguilar JA, Batsanov AS, Yufit DS, Parker D. PARASHIFT Probes: Solution NMR and X-ray Structural Studies of Macrocyclic Ytterbium and Yttrium Complexes. Inorg Chem 2017; 56:4028-4038. [DOI: 10.1021/acs.inorgchem.6b02291] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Kevin Mason
- Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
| | - Nicola J. Rogers
- Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
| | - Elizaveta A. Suturina
- School
of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, U.K
| | - Ilya Kuprov
- School
of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, U.K
| | - Juan A. Aguilar
- Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
| | - Andrei S. Batsanov
- Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
| | - Dmitry S. Yufit
- Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
| | - David Parker
- Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
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40
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Sørensen TJ, Tropiano M, Kenwright AM, Faulkner S. Triheterometallic Lanthanide Complexes Prepared from Kinetically Inert Lanthanide Building Blocks. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700027] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Thomas Just Sørensen
- Nano-Science Center & Department of Chemistry; University of Copenhagen; Universitetsparken 5 2100 København Ø Denmark
- Chemistry Research Laboratory; Oxford University; 12 Mansfield Road OX1 3TA Oxford UK
| | - Manuel Tropiano
- Chemistry Research Laboratory; Oxford University; 12 Mansfield Road OX1 3TA Oxford UK
| | - Alan M. Kenwright
- Chemistry Department; Durham University; South Road DH1 3LE Durham UK
| | - Stephen Faulkner
- Chemistry Research Laboratory; Oxford University; 12 Mansfield Road OX1 3TA Oxford UK
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41
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Krchová T, Herynek V, Gálisová A, Blahut J, Hermann P, Kotek J. Eu(III) Complex with DO3A-amino-phosphonate Ligand as a Concentration-Independent pH-Responsive Contrast Agent for Magnetic Resonance Spectroscopy (MRS). Inorg Chem 2017; 56:2078-2091. [PMID: 28170242 DOI: 10.1021/acs.inorgchem.6b02749] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A new DOTA-like ligand H5do3aNP with a 2-[amino(methylphosphonic acid)]ethyl-coordinating pendant arm was prepared, and its coordinating properties were studied by NMR spectroscopy and potentiometry. The study revealed a rare slow exchange (on the 1H and 31P NMR time scale) between protonated and unprotonated complex species with a corresponding acidity constant pKA ∼ 8.0. This unusually slow time scale associated with protonation is caused by a significant geometric change from square-antiprismatic (SA) arrangement observed for protonated complex SA-[Eu(Hdo3aNP)]- to twisted-square-antiprismatic (TSA) arrangement found for deprotonated complex TSA-[Eu(do3aNP)]2-. This behavior results in simultaneous occurrence of the signals of both species in the 31P NMR spectra at approximately -118 and +70 ppm, respectively. Such an unprecedented difference in the chemical shifts between species differing by a proton is caused by a significant movement of the principal magnetic axis and by a change of phosphorus atom position in the coordination sphere of the central Eu(III) ion (i.e., by relative movement of the phosphorus atom with respect to the principal magnetic axis). It changes the sign of the paramagnetic contribution to the 31P NMR chemical shift. The properties discovered can be employed in the measurement of pH by MRS techniques as presented by proof-of-principle experiments on phantoms.
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Affiliation(s)
- Tereza Krchová
- Department of Inorganic Chemistry, Faculty of Science, Charles University , Hlavova 2030, Prague 2 128 43, Czech Republic
| | - Vít Herynek
- Department of Radiodiagnostic and Interventional Radiology, Magnetic Resonance Unit, Institute for Clinical and Experimental Medicine , Vídeňská 1958/9, Prague 4 140 21, Czech Republic
| | - Andrea Gálisová
- Department of Radiodiagnostic and Interventional Radiology, Magnetic Resonance Unit, Institute for Clinical and Experimental Medicine , Vídeňská 1958/9, Prague 4 140 21, Czech Republic
| | - Jan Blahut
- Department of Inorganic Chemistry, Faculty of Science, Charles University , Hlavova 2030, Prague 2 128 43, Czech Republic
| | - Petr Hermann
- Department of Inorganic Chemistry, Faculty of Science, Charles University , Hlavova 2030, Prague 2 128 43, Czech Republic
| | - Jan Kotek
- Department of Inorganic Chemistry, Faculty of Science, Charles University , Hlavova 2030, Prague 2 128 43, Czech Republic
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42
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Damjanović M, Samuel PP, Roesky HW, Enders M. NMR analysis of an Fe(i)–carbene complex with strong magnetic anisotropy. Dalton Trans 2017; 46:5159-5169. [PMID: 28352888 DOI: 10.1039/c7dt00408g] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A paramagnetic, easy-plane anisotropic FeI complex, bearing cyclic-alkyl(amino) carbene (cAAC) ligands, is studied by means of NMR and DFT.
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Affiliation(s)
- Marko Damjanović
- Institute of Inorganic Chemistry
- Heidelberg University
- D-69120 Heidelberg
- Germany
| | - Prinson P. Samuel
- Universität Göttingen
- Institut für Anorganische Chemie
- Göttingen
- Germany
| | - Herbert W. Roesky
- Universität Göttingen
- Institut für Anorganische Chemie
- Göttingen
- Germany
| | - Markus Enders
- Institute of Inorganic Chemistry
- Heidelberg University
- D-69120 Heidelberg
- Germany
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43
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Li N, García-Rodríguez R, Matthews PD, Luo HK, Wright DS. Synthesis, structure and paramagnetic NMR analysis of a series of lanthanide-containing [LnTi6O3(OiPr)9(salicylate)6] cages. Dalton Trans 2017; 46:4287-4295. [DOI: 10.1039/c7dt00049a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The influence of paramagnetic Ln3+ ions on the NMR behaviour is investigated via a series of new isostructural lanthanide-containing cages with the general formula [LnTi6O3(OiPr)9(salicylate)6] (Ln = La–Er).
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Affiliation(s)
- Ning Li
- Department of Chemistry
- University of Cambridge
- UK
- Institute of Materials Research and Engineering
- Agency for Science
| | | | - Peter D. Matthews
- Department of Chemistry
- University of Cambridge
- UK
- School of Chemistry
- University of Manchester
| | - He-Kuan Luo
- Institute of Materials Research and Engineering
- Agency for Science
- Technology and Research
- Singapore
- Singapore
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44
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Junker AKR, Tropiano M, Faulkner S, Sørensen TJ. Kinetically Inert Lanthanide Complexes as Reporter Groups for Binding of Potassium by 18-crown-6. Inorg Chem 2016; 55:12299-12308. [DOI: 10.1021/acs.inorgchem.6b02063] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Anne Kathrine R Junker
- Nano-Science Center & Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 København Ø, Copenhagen, Denmark
- Chemistry
Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U. K
| | - Manuel Tropiano
- Chemistry
Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U. K
| | - Stephen Faulkner
- Chemistry
Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U. K
| | - Thomas Just Sørensen
- Nano-Science Center & Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 København Ø, Copenhagen, Denmark
- Chemistry
Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U. K
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45
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Polovkova MA, Martynov AG, Birin KP, Nefedov SE, Gorbunova YG, Tsivadze AY. Determination of the Structural Parameters of Heteronuclear (Phthalocyaninato)bis(crownphthalocyaninato)lanthanide(III) Triple-Deckers in Solution by Simultaneous Analysis of NMR and Single-Crystal X-ray Data. Inorg Chem 2016; 55:9258-69. [DOI: 10.1021/acs.inorgchem.6b01292] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Marina A. Polovkova
- Frumkin Institute of Physical Chemistry
and Electrochemistry, Russian Academy of Sciences, Leninskii pr.
31, Building 4, Moscow 119071, Russia
| | - Alexander G. Martynov
- Frumkin Institute of Physical Chemistry
and Electrochemistry, Russian Academy of Sciences, Leninskii pr.
31, Building 4, Moscow 119071, Russia
| | - Kirill P. Birin
- Frumkin Institute of Physical Chemistry
and Electrochemistry, Russian Academy of Sciences, Leninskii pr.
31, Building 4, Moscow 119071, Russia
| | - Sergey E. Nefedov
- Kurnakov Institute
of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow 119991, Russia
| | - Yulia G. Gorbunova
- Frumkin Institute of Physical Chemistry
and Electrochemistry, Russian Academy of Sciences, Leninskii pr.
31, Building 4, Moscow 119071, Russia
- Kurnakov Institute
of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow 119991, Russia
| | - Aslan Yu. Tsivadze
- Frumkin Institute of Physical Chemistry
and Electrochemistry, Russian Academy of Sciences, Leninskii pr.
31, Building 4, Moscow 119071, Russia
- Kurnakov Institute
of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow 119991, Russia
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46
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Damjanović M, Morita T, Horii Y, Katoh K, Yamashita M, Enders M. How Ions Arrange in Solution: Detailed Insight from NMR Spectroscopy of Paramagnetic Ion Pairs. Chemphyschem 2016; 17:3423-3429. [DOI: 10.1002/cphc.201600804] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Marko Damjanović
- Institute of Inorganic Chemistry Heidelberg University Im Neuenheimer Feld 270 69120 Heidelberg Germany), Tel: +49-6221-54-6247, Fax: +49-6221-54-161-6247
| | - Takaumi Morita
- Department of Chemistry Graduate School of Science Tohoku University 6-3 Aramaki-Aza-Aoba Sendai 980-8578 Japan
| | - Yoji Horii
- Department of Chemistry Graduate School of Science Tohoku University 6-3 Aramaki-Aza-Aoba Sendai 980-8578 Japan
| | - Keiichi Katoh
- Department of Chemistry Graduate School of Science Tohoku University 6-3 Aramaki-Aza-Aoba Sendai 980-8578 Japan
| | - Masahiro Yamashita
- Department of Chemistry Graduate School of Science Tohoku University 6-3 Aramaki-Aza-Aoba Sendai 980-8578 Japan
| | - Markus Enders
- Institute of Inorganic Chemistry Heidelberg University Im Neuenheimer Feld 270 69120 Heidelberg Germany), Tel: +49-6221-54-6247, Fax: +49-6221-54-161-6247
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47
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Hiller M, Maier M, Wadepohl H, Enders M. Paramagnetic NMR Analysis of Substituted Biscyclooctatetraene Lanthanide Complexes. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00241] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Markus Hiller
- Institute of Inorganic Chemistry, Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Martin Maier
- Institute of Inorganic Chemistry, Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Hubert Wadepohl
- Institute of Inorganic Chemistry, Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Markus Enders
- Institute of Inorganic Chemistry, Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
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48
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Kreidt E, Bischof C, Platas-Iglesias C, Seitz M. Magnetic Anisotropy in Functionalized Bipyridyl Cryptates. Inorg Chem 2016; 55:5549-57. [PMID: 27214575 DOI: 10.1021/acs.inorgchem.6b00591] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The magnetic properties of molecular lanthanoid complexes are very important for a variety of scientific and technological applications, with the unique magnetic anisotropy being one of the most important features. In this context, a very rigid tris(bipyridine) cryptand was synthesized with a primary amine functionality for future bioconjugation. The magnetic anisotropy was investigated for the corresponding paramagnetic ytterbium cryptate. With the use of a combination of density functional theory calculations and lanthanoid-induced NMR shift analysis, the magnetic susceptibility tensor was determined and compared to the unfunctionalized cryptate analogue. The size and orientation of the axial and rhombic tensor components show remarkably great resilience toward the decrease of local symmetry around the metal and anion exchange in the inner coordination sphere. In addition, the functionalized ytterbium cryptate also exhibits efficient near-IR luminescence.
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Affiliation(s)
- Elisabeth Kreidt
- Institute of Inorganic Chemistry, University of Tübingen , Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Caroline Bischof
- Inorganic Chemistry I, Ruhr-University Bochum , 44780 Bochum, Germany
| | - Carlos Platas-Iglesias
- Departamento de Química Fundamental, Universidade da Coruña , Campus da Zapateira-Rúa da Fraga 10, 15008 A Coruña, Spain
| | - Michael Seitz
- Institute of Inorganic Chemistry, University of Tübingen , Auf der Morgenstelle 18, 72076 Tübingen, Germany
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49
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Blackburn OA, Kenwright AM, Jupp AR, Goicoechea JM, Beer PD, Faulkner S. Fluoride Binding and Crystal-Field Analysis of Lanthanide Complexes of Tetrapicolyl-Appended Cyclen. Chemistry 2016; 22:8929-36. [PMID: 27167830 DOI: 10.1002/chem.201601170] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Indexed: 11/09/2022]
Abstract
Lanthanide complexes of tetrapicolyl cyclen displayed remarkably high affinities for fluoride (log K≈5) in water, and were shown to form 1:1 complexes. The behaviour of these systems can be rationalised by changes to the magnitude of the crystal-field parameter, B20 . However, such changes are not invariably accompanied by a change in sign of this parameter: for early lanthanides, the N8 donor set with a coordinated axial water molecule ensures that the magnetic anisotropy has the opposite sense to that observed in the analogous dehydrated lanthanide complexes.
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Affiliation(s)
- Octavia A Blackburn
- Chemistry Research Laboratory, Oxford University, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Alan M Kenwright
- Department of Chemistry, University of Durham, South Road, Durham, DH1 3LE, UK
| | - Andrew R Jupp
- Chemistry Research Laboratory, Oxford University, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Jose M Goicoechea
- Chemistry Research Laboratory, Oxford University, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Paul D Beer
- Chemistry Research Laboratory, Oxford University, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Stephen Faulkner
- Chemistry Research Laboratory, Oxford University, 12 Mansfield Road, Oxford, OX1 3TA, UK.
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50
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