1
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Wilson LRB, Coletta M, Singh MK, Teat SJ, Brookfield A, Shanmugam M, McInnes EJL, Piligkos S, Dalgarno SJ, Brechin EK. A bis-calix[4]arene-supported [CuII16] cage. Dalton Trans 2023. [PMID: 37325815 DOI: 10.1039/d3dt01448g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Reaction of 2,2'-bis-p-tBu-calix[4]arene (H8L) with Cu(NO3)2·3H2O and N-methyldiethanolamine (Me-deaH2) in a basic dmf/MeOH mixture affords [CuII16(L)2(Me-dea)4(μ4-NO3)2(μ-OH)4(dmf)3.5(MeOH)0.5(H2O)2](H6L)·16dmf·4H2O (4), following slow evaporation of the mother liquor. The central core of the metallic skeleton describes a tetracapped square prism, [Cu12], in which the four capping metal ions are the CuII ions housed in the calix[4]arene polyphenolic pockets. The [CuII8] square prism is held together "internally" by a combination of hydroxide and nitrate anions, with the N-methyldiethanolamine co-ligands forming dimeric [CuII2] units which edge-cap above and below the upper and lower square faces of the prism. Charge balance is maintained through the presence of one doubly deprotonated H6L2- ligand per [Cu16] cluster. Magnetic susceptibility measurements reveal the predominance of strong antiferromagnetic exchange interactions and an S = 1 ground state, while EPR is consistent with a large zero-field splitting.
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Affiliation(s)
- Lucinda R B Wilson
- EastCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, Scotland, EH9 3FJ, UK.
| | - Marco Coletta
- EastCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, Scotland, EH9 3FJ, UK.
| | - Mukesh K Singh
- EastCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, Scotland, EH9 3FJ, UK.
| | - Simon J Teat
- Station 11.3.1, Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
| | - Adam Brookfield
- School of Chemistry, The University of Manchester, Oxford Road, Manchester, England, M13 9PL, UK.
| | - Muralidharan Shanmugam
- School of Chemistry, The University of Manchester, Oxford Road, Manchester, England, M13 9PL, UK.
| | - Eric J L McInnes
- School of Chemistry, The University of Manchester, Oxford Road, Manchester, England, M13 9PL, UK.
| | - Stergios Piligkos
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100, Copenhagen, Denmark.
| | - Scott J Dalgarno
- Institute of Chemical Sciences, Heriot-Watt University, Riccarton, Edinburgh, Scotland, EH14 4AS, UK.
| | - Euan K Brechin
- EastCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, Scotland, EH9 3FJ, UK.
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2
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Hosseinzadeh M, Sanz S, van Leusen J, Izarova NV, Brechin EK, Dalgarno SJ, Kögerler P. Controlled Hydrolysis of Phosphate Esters: A Route to Calixarene-Supported Rare-Earth Clusters. Chemistry 2023; 29:e202203525. [PMID: 36453613 DOI: 10.1002/chem.202203525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 11/30/2022] [Accepted: 12/01/2022] [Indexed: 12/05/2022]
Abstract
Phosphate ester bonds are widely present in nature (e. g. DNA/RNA) and can be extremely stable against hydrolysis without the help of catalysts. Previously, we showed how the combination of phosphoryl and calix[4]arene moieties in the same organic framework (LPO ) allows isolation of single lanthanide (Ln) metal ions as [LnIII (LPO )2 ](O3 SCF3 )3 . Here we report how by controlling the reaction conditions a new hydrolyzed phosphoryl-calix[4]arene ligand (H3 LHPO ) is formed as a result of LnIII -mediated P-OEt bond cleavage in three out of the eight possible sites in LPO . The chelating nature of H3 LHPO traps the LnIII species in the form of [LnIII (LHPO )((EtO)2 P(O)OH)]2 dimers (Ln=La, Dy, Tb, Gd), where the Dy derivative shows slow magnetization relaxation. The strategy presented herein could be extended to access a broader library of hydrolyzed platforms (Hx LHPO ; x=1-8) that may represent mimics of nuclease enzymes.
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Affiliation(s)
- Marjan Hosseinzadeh
- Institute of Inorganic Chemistry, RWTH Aachen University, 52056, Aachen, Germany
| | - Sergio Sanz
- Peter Grünberg Institute, Electronic Properties (PGI-6) Forschungszentrum Jülich, 52425, Jülich, Germany
| | - Jan van Leusen
- Institute of Inorganic Chemistry, RWTH Aachen University, 52056, Aachen, Germany
| | - Natalya V Izarova
- Institute of Inorganic Chemistry, RWTH Aachen University, 52056, Aachen, Germany
| | - Euan K Brechin
- EaStCHEM School of Chemistry, The University of Edinburgh, EH9 3FJ, Edinburgh, UK
| | - Scott J Dalgarno
- Institute of Chemical Sciences, Heriot-Watt University, EH14 4AS, Edinburgh, UK
| | - Paul Kögerler
- Institute of Inorganic Chemistry, RWTH Aachen University, 52056, Aachen, Germany.,Peter Grünberg Institute, Electronic Properties (PGI-6) Forschungszentrum Jülich, 52425, Jülich, Germany
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3
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Petrus R, Kowaliński A, Utko J, Matuszak K, Lis T, Sobota P. Heterometallic 3d-4f Alkoxide Precursors for the Synthesis of Binary Oxide Nanomaterials. Inorg Chem 2023; 62:2197-2212. [PMID: 36696546 PMCID: PMC9906784 DOI: 10.1021/acs.inorgchem.2c03872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
In this study, a new method for the synthesis of heterometallic 3d-4f alkoxides by the direct reaction of metallic lanthanides (La, Pr, Nd, Gd) with MCl2 (M = Mn, Ni, Co) in 2-methoxyethanol was developed. The method was applied to the synthesis of the heterometallic oxo-alkoxide clusters [Ln4Mn2(μ6-O)(μ3-OR)8(HOR)xCl6] (Ln = La (1), Nd (2), Gd (3); x = 0, 2, 4); [Pr4M2(μ6-O)(μ3-OR)8(HOR)xCl6] (M = Co (4), Ni (5); x = 2, 4); and [Ln4Mn2(μ3-OH)2(μ3-OR)4(μ-OR)4(μ-Cl)2(HOR)4Cl6] (Ln = La (11) and Pr (12)). Mechanistic investigation led to the isolation of the homo- and heterometallic intermediates [Pr(μ-OR)(μ-Cl)(HOR)Cl]n (6), [Co4(μ3-OR)4(HOR)4Cl4] (7), [Ni4(μ3-OR)4(HOEt)4Cl4] (8), [Mn4(μ3-OR)4(HOR)2(HOEt)2Cl4] (9), and [Nd(HOR)4Cl][CoCl4] (10). In the presence of an external M(II) source at 1100 °C, 1-4 and 12 were selectively converted into binary metal oxide nanomaterials with trigonal or orthorhombic perovskite structures, i.e., LaMnO3, GdMnO3, NdMnO3, Pr0.9MnO3, and PrCoO3. Compound 5 decomposed into a mixture of homo- and heterometallic oxides. The method presented provides a valuable platform for the preparation of advanced heterometallic oxide materials with promising magnetic, luminescence, and/or catalytic applications.
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Affiliation(s)
- Rafał Petrus
- Faculty
of Chemistry, Wrocław University of
Science and Technology, 23 Smoluchowskiego, 50-370 Wrocław, Poland,
| | - Adrian Kowaliński
- Faculty
of Chemistry, Wrocław University of
Science and Technology, 23 Smoluchowskiego, 50-370 Wrocław, Poland
| | - Józef Utko
- Faculty
of Chemistry, Wrocław University of
Science and Technology, 23 Smoluchowskiego, 50-370 Wrocław, Poland
| | - Karolina Matuszak
- Faculty
of Chemistry, Wrocław University of
Science and Technology, 23 Smoluchowskiego, 50-370 Wrocław, Poland
| | - Tadeusz Lis
- Faculty
of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland
| | - Piotr Sobota
- Faculty
of Chemistry, Wrocław University of
Science and Technology, 23 Smoluchowskiego, 50-370 Wrocław, Poland,
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4
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Moutzouris N, Moushi EE, Tziotzi TG, Tarlas GD, Tasiopoulos AJ, Escuer A, Papaefstathiou GS. Metallo‐ligand based 3d/4f coordination polymers: Synthesis, structure and magnetic properties. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Nikolaos Moutzouris
- National and Kapodistrian University of Athens Department of Chemistry: Ethniko kai Kapodistriako Panepistemio Athenon Tmema Chemeias chemistry GREECE
| | | | - Thomais G. Tziotzi
- University of Crete Department of Chemistry: Panepistemio Kretes Tmema Chemeias chemistry GREECE
| | - Georgios D. Tarlas
- National and Kapodistrian University of Athens Department of Chemistry: Ethniko kai Kapodistriako Panepistemio Athenon Tmema Chemeias chemistry GREECE
| | | | - Albert Escuer
- University of Barcelona: Universitat de Barcelona chemistry SPAIN
| | - Giannis S Papaefstathiou
- National and Kapodistrian University of Athens Department of Chemistry: Ethniko kai Kapodistriako Panepistemio Athenon Tmema Chemeias Department of Chemistry Panepistimiopolis 157 71 Zografou GREECE
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5
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Brechin EK, Dalgarno S, Wilson L, Coletta M, Evangelisti M, Piligkos S. The coordination chemistry of p-tert-butylcalix[4]arene with paramagnetic transition and lanthanide metal ions: an Edinburgh Perspective. Dalton Trans 2022; 51:4213-4226. [DOI: 10.1039/d2dt00152g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The calix[4]arene scaffold is an extremely versatile supramolecular platform that has found widespread use across many research areas due to its synthetic versatility, controllable conformation, and the presence of cavities...
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6
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Wilson LRB, Coletta M, Jose R, Rajaraman G, Dalgarno SJ, Brechin EK. Oxidation state variation in bis-calix[4]arene supported decametallic Mn clusters. Dalton Trans 2021; 50:17566-17572. [PMID: 34816846 DOI: 10.1039/d1dt03410c] [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 reaction of MnCl2·4H2O, H8L (2,2'-bis-p-tBu-calix[4]arene) and NEt3 in a dmf/MeOH solvent mixture results in the formation of a mixed valent decametallic cluster of formula [MnII6MnIII4(L)2(μ3-OH)4(μ-OH)4(MeOH)4(dmf)4(MeCN)2]·MeCN (3). Complex 3 crystallises in the monoclinic space group P21/n with the asymmetric unit comprising half of the compound. Structure solution reveals that the bis-calix[4]arene ligands are arranged such that one TBC[4] moiety in each has undergone inversion in order to accommodate a [MnIII4MnII6] metallic skeleton that describes three vertex-sharing [MnIII2MnII2] butterflies. The structure is closely related to the species [MnIII6MnII4(L)2(μ3-O)2(μ3-OH)2(μ-OMe)4(H2O)4(dmf)8]·4dmf (4), the major difference being the oxidation level of the Mn ions in the core of the compound. DFT calculations on the full structures reveal that replacing the MnIII ions in 4 for MnII ions in 3 results in a significant decrease in the magnitude of some antiferromagnetic exchange contributions, a switch from ferromagnetic to antiferromagnetic in others, and the loss of significant spin frustration.
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Affiliation(s)
- Lucinda R B Wilson
- EastCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, Scotland, EH9 3FJ, UK.
| | - Marco Coletta
- EastCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, Scotland, EH9 3FJ, UK.
| | - Reshma Jose
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, India.
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, India.
| | - Scott J Dalgarno
- Institute of Chemical Sciences, Heriot-Watt University, Riccarton, Edinburgh, Scotland, EH14 4AS, UK.
| | - Euan K Brechin
- EastCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, Scotland, EH9 3FJ, UK.
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7
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Jiao Y, Sarwar S, Sanz S, van Leusen J, Izarova NV, Campbell CL, Brechin EK, Dalgarno SJ, Kögerler P. Exploiting complementary ligands for the construction of square antiprismatic monometallic lanthanide SMMs. Dalton Trans 2021; 50:9648-9654. [PMID: 34160497 DOI: 10.1039/d1dt00359c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The methylation of p-tert-butylcalix[4]arene in the distal 1,3-phenolic sites provides the ligand H2L = {p-tert-butylcalix[4](OMe)2(OH)2arene} that enables construction of heteroleptic mononuclear lanthanide complexes. The reaction of (N(nBu)4)(acac) (Hacac = acetylacetone), MIIICl3 and H2L under Schlenk conditions results in the formation of a family of (N(nBu)4)[MIIIL(acac)2] complexes where M = Y (1), Gd (2), Tb (3) and Dy (4). The metal ions are eight-coordinate in distorted square-antiprismatic coordination geometries, resulting in slow relaxation of the magnetisation for the Tb derivative.
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Affiliation(s)
- Yushu Jiao
- Institute of Inorganic Chemistry, RWTH Aachen University, 52056 Aachen, Germany.
| | - Sidra Sarwar
- Institute of Inorganic Chemistry, RWTH Aachen University, 52056 Aachen, Germany. and Peter Grünberg Institute, Electronic Properties (PGI-6), Forschungszentrum Jülich, 52425 Jülich, Germany.
| | - Sergio Sanz
- Peter Grünberg Institute, Electronic Properties (PGI-6), Forschungszentrum Jülich, 52425 Jülich, Germany. and Jülich-Aachen Research Alliance, Fundamentals for Future Information Technology (JARA-FIT), Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Jan van Leusen
- Institute of Inorganic Chemistry, RWTH Aachen University, 52056 Aachen, Germany.
| | - Natalya V Izarova
- Institute of Inorganic Chemistry, RWTH Aachen University, 52056 Aachen, Germany. and Peter Grünberg Institute, Electronic Properties (PGI-6), Forschungszentrum Jülich, 52425 Jülich, Germany.
| | - Cameron L Campbell
- Institute of Chemical Sciences, Heriot-Watt University, Riccarton, Edinburgh, EH14 4AS, UK.
| | - Euan K Brechin
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, EH9 3FJ, UK.
| | - Scott J Dalgarno
- Institute of Chemical Sciences, Heriot-Watt University, Riccarton, Edinburgh, EH14 4AS, UK.
| | - Paul Kögerler
- Institute of Inorganic Chemistry, RWTH Aachen University, 52056 Aachen, Germany. and Peter Grünberg Institute, Electronic Properties (PGI-6), Forschungszentrum Jülich, 52425 Jülich, Germany. and Jülich-Aachen Research Alliance, Fundamentals for Future Information Technology (JARA-FIT), Forschungszentrum Jülich, 52425 Jülich, Germany
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8
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Hosseinzadeh M, Sanz S, van Leusen J, Izarova NV, Brechin EK, Dalgarno SJ, Kögerler P. Phosphorylated-calix[4]arene double-deckers of single rare earth metal ions. Chem Commun (Camb) 2021; 57:8087-8090. [PMID: 34304255 DOI: 10.1039/d1cc02910j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Combination of phosphoryl and calix[4]arene moieties in the same organic framework (LPO) directs the formation of homoleptic double-decker complexes [LnIII(LPO)2](OTf)3 for Ln = Tb and Dy, with the latter displaying slow relaxation of the magnetisation.
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Affiliation(s)
- Marjan Hosseinzadeh
- Institute of Inorganic Chemistry, RWTH Aachen University, Aachen 52056, Germany.
| | - Sergio Sanz
- Peter Grünberg Institute, Electronic Properties (PGI-6), Forschungszentrum Jülich, Jülich 52425, Germany and Jülich-Aachen Research Alliance, Fundamentals for Future Information Technology (JARA-FIT), Forschungszentrum Jülich, Jülich 52425, Germany
| | - Jan van Leusen
- Institute of Inorganic Chemistry, RWTH Aachen University, Aachen 52056, Germany.
| | - Natalya V Izarova
- Institute of Inorganic Chemistry, RWTH Aachen University, Aachen 52056, Germany. and Peter Grünberg Institute, Electronic Properties (PGI-6), Forschungszentrum Jülich, Jülich 52425, Germany
| | - Euan K Brechin
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, EH9 3FJ, UK.
| | - Scott J Dalgarno
- Institute of Chemical Sciences, Heriot-Watt University, Riccarton, Edinburgh, EH144AS, UK.
| | - Paul Kögerler
- Institute of Inorganic Chemistry, RWTH Aachen University, Aachen 52056, Germany. and Peter Grünberg Institute, Electronic Properties (PGI-6), Forschungszentrum Jülich, Jülich 52425, Germany and Jülich-Aachen Research Alliance, Fundamentals for Future Information Technology (JARA-FIT), Forschungszentrum Jülich, Jülich 52425, Germany
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9
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Coletta M, Sanz S, Cutler DJ, Teat SJ, Gagnon KJ, Singh MK, Brechin EK, Dalgarno SJ. Magneto-structural studies of an unusual [Mn IIIMn IIGd III(OR) 4] 4- partial cubane from 2,2'-bis- p- tBu-calix[4]arene. Dalton Trans 2020; 49:14790-14797. [PMID: 33052369 DOI: 10.1039/d0dt02731f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Reaction of 2,2'-bis-p-tBu-calix[4]arene (H8L) with MnCl2·4H2O, GdCl3·6H2O and 2,6-pyridinedimethanol (H2pdm) affords [MnIIIMnIIGdIII(H3L)(pdmH)(pdm)(MeOH)2(dmf)]·3MeCN·dmf (3·3MeCN·dmf) upon vapour diffusion of MeCN into the basic dmf/MeOH mother liquor. 3 crystallises in the tetragonal space group P41212 with the asymmetric unit comprising the entire cluster. The highly unusual core contains a triangular arrangement of MnIIIMnIIGdIII ions housed within a [MnIIIMnIIGdIII(OR)4]4- partial cubane. Magnetic susceptibility and magnetisation data reveal best fit parameters JMn(II)-Mn(III) = +0.415 cm-1, JMn(III)-Gd(III) = +0.221 cm-1, JMn(II)-Gd(III) = -0.258 cm-1 and DMn(III) = -4.139 cm-1. Theoretically derived magnetic exchange interactions, anisotropy parameters, and magneto-structural correlations for 3 are in excellent agreement with the experimental data.
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Affiliation(s)
- Marco Coletta
- Institute of Chemical Sciences, Heriot-Watt University, Riccarton, Edinburgh, Scotland EH14 4AS, UK.
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10
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Fuller RO, Koutsantonis GA, Ogden MI. Magnetic properties of calixarene-supported metal coordination clusters. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2019.213066] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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11
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Rajeshkumar T, Jose R, Remya PR, Rajaraman G. Theoretical Studies on Trinuclear {MnIII2GdIII} and Tetranuclear {MnIII2GdIII2} Clusters: Magnetic Exchange, Mechanism of Magnetic Coupling, Magnetocaloric Effect, and Magneto–Structural Correlations. Inorg Chem 2019; 58:11927-11940. [DOI: 10.1021/acs.inorgchem.9b01503] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thayalan Rajeshkumar
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Reshma Jose
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Premaja R. Remya
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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12
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Ge JY, Duan X, Ma JP, Huang S, Du J, Wang P. Thiacalix[4]arene-Supported Tetranuclear Tb III
and Eu III
Compounds: Synthesis, Structure, Luminescence, and Magnetism. Z Anorg Allg Chem 2019. [DOI: 10.1002/zaac.201800356] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Jing-Yuan Ge
- College of Materials and Environmental Engineering; Hangzhou Dianzi University; 310018 Hangzhou P. R. China
| | - Xing Duan
- College of Materials and Environmental Engineering; Hangzhou Dianzi University; 310018 Hangzhou P. R. China
| | - Jian-Ping Ma
- School of Chemistry; Chemical Engineering and Materials Science; Shandong Normal University; 250014 Jinan P. R. China
| | - Shuai Huang
- College of Materials and Environmental Engineering; Hangzhou Dianzi University; 310018 Hangzhou P. R. China
| | - Jia Du
- College of Materials and Environmental Engineering; Hangzhou Dianzi University; 310018 Hangzhou P. R. China
| | - Peng Wang
- College of Chemical and Environmental Engineering; Shandong University of Science and Technology; 266590 Qingdao P. R. China
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13
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Boutar M, Desroches C, Mattoussi N, Habib Noamane M, Bois L, Gautier-Luneau I, Abidi R, Luneau D. Coordination polymers of zinc(II) and manganese(II) made by complexation of calix[4]arene functionalized with carboxylates afford alveolar materials. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.11.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Photogeneration of Manganese(III) from Luminescent Manganese(II) Complexes with Thiacalixarene Ligands: Synthesis, Structures and Photophysical Properties. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201801104] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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15
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Vignesh KR, Langley SK, Moubaraki B, Murray KS, Rajaraman G. Understanding the Mechanism of Magnetic Relaxation in Pentanuclear {Mn IVMn III2Ln III2} Single-Molecule Magnets. Inorg Chem 2018; 57:1158-1170. [PMID: 29308893 DOI: 10.1021/acs.inorgchem.7b02608] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A new family of heterometallic pentanuclear complexes of formulas [MnIVMnIII2LnIII2O2(benz)4(mdea)3(NO3)2(MeOH)] (Ln = Dy (1-Dy), Tb (2-Tb), Gd (3-Gd), Eu (4-Eu), Sm (5-Sm), Nd (6-Nd), Pr (7-Pr); benz(H) = benzoic acid; mdeaH2= N-methyldiethanolamine) and [MnIVMnIII2LnIII2O2(o-tol)4(mdea)3(NO3)2(MeOH)] (Ln = Gd (8-Gd), Eu (9-Eu); o-tol(H) = o-toluic acid) have been isolated and structurally, magnetically, and theoretically characterized. dc magnetic susceptibility measurements reveal dominant antiferromagnetic magnetic interactions for each complex, except for 2-Tb and 3-Gd, which reveal an upturn in the χMT product at low temperatures. The magnetic interactions between the spin centers in the Gd derivatives, 3-Gd and 8-Gd, which display markedly different χMT vs T profiles, were found to be due to the interactions of the GdIII-GdIII ions which change from ferromagnetic (3-Gd) to antiferromagnetic (8-Gd) due to structural differences. ac magnetic susceptibility measurements reveal a nonzero out-of-phase component for 1-Dy and 7-Pr, but no maxima were observed above 2 K (Hdc = 0 Oe), which suggests single-molecule magnet (SMM) behavior. Out-of-phase signals were observed for complexes 2-Tb, 4-Eu, 8-Gd, and 9-Eu, in the presence of a static dc field (Hdc = 2000, 3000 Oe). The anisotropic nature of the lanthanide ions in the benzoate series (1-Dy, 2-Tb, 5-Sm, 6-Nd, and 7-Pr) were thoroughly investigated using ab initio methods. CASSCF calculations predict that the origin of SMM behavior in 1-Dy and 7-Pr and the applied field SMM behavior in 2-Tb does not solely originate from the single-ion anisotropy of the lanthanide ions. To fully understand the relaxation mechanism, we have employed the Lines model to fit the susceptibility data using the POLY_ANISO program, which suggests that the zero-field SMM behavior observed in complexes 1-Dy and 7-Pr is due to weak MnIII/IV-LnIII and LnIII-LnIII couplings and an unfavorable LnIII/MnIII/MnIV anisotropy. In complexes 4-Eu, 8-Gd, and 9-Eu ab initio calculations indicate that the anisotropy of the MnIII ions solely gives rise to the possibility of SMM behavior. Complex 7-Pr is a Pr(III)-containing complex that displays zero-field SMM behavior, which is rare, and our study suggests the possibility of coupling weak SOC lanthanide metal ions to anisotropic transition-metal ions to derive SMM characteristics; however, enhancing the exchange coupling in {3d-4f} complexes is still a stubborn hurdle in harnessing new generation {3d-4f} SMMs.
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Affiliation(s)
| | - Stuart K Langley
- School of Science and the Environment, Division of Chemistry, Manchester Metropolitan University , Manchester, U.K
| | - Boujemaa Moubaraki
- School of Chemistry, 17 Rainforest Walk, Monash University , Clayton, Victoria 3800, Australia
| | - Keith S Murray
- School of Chemistry, 17 Rainforest Walk, Monash University , Clayton, Victoria 3800, Australia
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16
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Kobayashi F, Ohtani R, Kusumoto S, Lindoy LF, Hayami S, Nakamura M. Wheel-type heterometallic ferromagnetic clusters: [Ni 7−xM x(HL) 6(μ 3-OMe) 4(μ 3-OH) 2]Cl 2 (M = Zn, Co, Mn; x = 1, 3). Dalton Trans 2018; 47:16422-16428. [DOI: 10.1039/c8dt03275k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Wheel-type heptanuclear heterometallic clusters display metal ion dependent ferromagnetic properties and express single molecule magnet behavior based on the magnetic anisotropy.
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Affiliation(s)
- Fumiya Kobayashi
- Department of Chemistry
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto 860-8555
- Japan
| | - Ryo Ohtani
- Department of Chemistry
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto 860-8555
- Japan
| | - Sotaro Kusumoto
- Department of Chemistry
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto 860-8555
- Japan
| | | | - Shinya Hayami
- Department of Chemistry
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto 860-8555
- Japan
| | - Masaaki Nakamura
- Department of Chemistry
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto 860-8555
- Japan
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17
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Coletta M, McLellan R, Sanz S, Gagnon KJ, Teat SJ, Brechin EK, Dalgarno SJ. A New Family of 3
d
–4
f
Bis‐Calix[4]arene‐Supported Clusters. Chemistry 2017; 23:14073-14079. [DOI: 10.1002/chem.201703197] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Marco Coletta
- Institute of Chemical Sciences Heriot-Watt University, Riccarton Edinburgh EH14 4AS UK
| | - Ross McLellan
- Institute of Chemical Sciences Heriot-Watt University, Riccarton Edinburgh EH14 4AS UK
| | - Sergio Sanz
- EaStCHEM School of Chemistry The University of Edinburgh David Brewster Road Edinburgh EH9 3FJ UK
| | - Kevin J. Gagnon
- Advanced Light Source Lawrence Berkeley National Laboratory Berkeley CA 947240 USA
| | - Simon J. Teat
- Advanced Light Source Lawrence Berkeley National Laboratory Berkeley CA 947240 USA
| | - Euan K. Brechin
- EaStCHEM School of Chemistry The University of Edinburgh David Brewster Road Edinburgh EH9 3FJ UK
| | - Scott J. Dalgarno
- Institute of Chemical Sciences Heriot-Watt University, Riccarton Edinburgh EH14 4AS UK
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18
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Tan XF, Zhou J, Zou HH, Fu L, Tang Q. A Series of Lanthanide-Germanate Oxo Clusters Decorated by 1,10-Phenanthroline Chromophores. Inorg Chem 2017; 56:10361-10369. [PMID: 28832126 DOI: 10.1021/acs.inorgchem.7b01271] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of lanthanide-germanate oxo clusters, [Ln8(phen)2Ge12(μ3-O)24T12(H2O)16]·2H2O [Ln = Dy (1a) and Er (1b); T = -CH2CH2COO- group; phen = 1,10-phenanthroline], [Ln8(phen)2Ge12(μ3-O)24T12(H2O)16]·2phen·16H2O [Ln = Sm (2a), Eu (2b), and Gd (2c)], and [Ho8(phen)2Ge12(μ3-O)24T12(H2O)14]·2phen·13H2O (3), have been hydrothermally synthesized from the reactions of bis(carboxyethylgermanium sesquioxide) and Ln2O3 with auxiliary phen chromophores. Compounds 1a and 1b consist of cage clusters [Ln8(phen)2Ge12(μ3-O)24T12(H2O)16] and free H2O molecules, where cage clusters are arranged in a CsCl type, while compounds 2a-2c consist of cage clusters [Ln8(phen)2Ge12(μ3-O)24T12(H2O)16], free phen, and free H2O molecules, where cage clusters are arranged in a NaCl type. Compound 3 consists of the one-dimensional neutral chain [Ho8(phen)2Ge12(μ3-O)24T12(H2O)14]n and free H2O molecules. These compounds provide the first examples of p-f heterometallic [Ge-O-Ln] oxo clusters decorated by phen chromophores. The photoluminescent and magnetic properties of all compounds have been investigated.
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Affiliation(s)
- Xiao-Feng Tan
- Chongqing Key Laboratory of Inorganic Functional Materials, College of Chemistry, Chongqing Normal University , Chongqing 401331, P. R. China
| | - Jian Zhou
- Chongqing Key Laboratory of Inorganic Functional Materials, College of Chemistry, Chongqing Normal University , Chongqing 401331, P. R. China
| | - Hua-Hong Zou
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Pharmacy, Guangxi Normal University , Guilin 541004, P. R. China
| | - Lianshe Fu
- Department of Physics and CICECO, Aveiro Institute of Materials, University of Aveiro , Aveiro 3810-193, Portugal
| | - Qiuling Tang
- Chongqing Key Laboratory of Inorganic Functional Materials, College of Chemistry, Chongqing Normal University , Chongqing 401331, P. R. China
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19
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McLellan R, Palacios MA, Sanz S, Brechin EK, Dalgarno SJ. Importance of Steric Influences in the Construction of Multicomponent Hybrid Polymetallic Clusters. Inorg Chem 2017; 56:10044-10053. [DOI: 10.1021/acs.inorgchem.7b01566] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ross McLellan
- Institute of Chemical
Sciences, School of Engineering and Physical Sciences, Heriot-Watt University, Riccarton, Edinburgh, EH14 4AS, Scotland
| | - Maria A. Palacios
- EaStCHEM School of Chemistry, University of Edinburgh, David Brewster Road, Edinburgh, EH9 3FJ, Scotland
| | - Sergio Sanz
- EaStCHEM School of Chemistry, University of Edinburgh, David Brewster Road, Edinburgh, EH9 3FJ, Scotland
| | - Euan K. Brechin
- EaStCHEM School of Chemistry, University of Edinburgh, David Brewster Road, Edinburgh, EH9 3FJ, Scotland
| | - Scott J. Dalgarno
- Institute of Chemical
Sciences, School of Engineering and Physical Sciences, Heriot-Watt University, Riccarton, Edinburgh, EH14 4AS, Scotland
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20
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Vignesh KR, Langley SK, Gartshore CJ, Moubaraki B, Murray KS, Rajaraman G. What Controls the Magnetic Exchange and Anisotropy in a Family of Tetranuclear {Mn2IIMn2III} Single-Molecule Magnets? Inorg Chem 2017; 56:1932-1949. [PMID: 28156106 DOI: 10.1021/acs.inorgchem.6b02527] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Stuart K. Langley
- School of Science and the Environment, Chemistry Division, Manchester Metropolitan University, Manchester, United Kingdom
| | | | - Boujemaa Moubaraki
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Keith S. Murray
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
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21
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Coletta M, Sanz S, McCormick LJ, Teat SJ, Brechin EK, Dalgarno SJ. The remarkable influence of N,O-ligands in the assembly of a bis-calix[4]arene-supported [MnIV2MnIII10MnII8] cluster. Dalton Trans 2017; 46:16807-16811. [DOI: 10.1039/c7dt04233g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bis-calix[4]arene is a highly versatile ligand that is capable of forming a range of polymetallic clusters. Use of an N,O-chelating co-ligand affords a very high nuclearity mixed-valence Mn cluster (shown here) that displays coordination modes relative to each ligand type.
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Affiliation(s)
- Marco Coletta
- Institute of Chemical Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | - Sergio Sanz
- EastCHEM School of Chemistry
- The University of Edinburgh
- Edinburgh
- UK
| | - Laura J. McCormick
- Station 11.3.1
- Advanced Light Source
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
| | - Simon J. Teat
- Station 11.3.1
- Advanced Light Source
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
| | - Euan K. Brechin
- EastCHEM School of Chemistry
- The University of Edinburgh
- Edinburgh
- UK
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22
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Chiang CH, Tzeng YW, Yang CI, Nakano M, Wan WL, Lai LL, Lee GH. The synthesis of three new Cu5, Cu8 and Cu12 clusters via the use of a semi-flexible aminotriazine-based bis-methylpyridine ligand. Dalton Trans 2017; 46:1237-1248. [DOI: 10.1039/c6dt04236h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The use of a semi-flexible aminotriazine-based bis-methylpyridine ligand afforded three new Cu5, Cu8 and Cu12 complexes.
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Affiliation(s)
| | - Yen-Wen Tzeng
- Department of Chemistry
- Tunghai University
- Taichung 407
- Taiwan
| | - Chen-I. Yang
- Department of Chemistry
- Tunghai University
- Taichung 407
- Taiwan
| | - Motohiro Nakano
- Division of Applied Chemistry
- Graduate School of Engineering
- Osaka University
- Suita
- Japan
| | - Wun-Long Wan
- Department of Applied Chemistry
- National Chi Nan University
- Nantou 545
- Taiwan
| | - Long-Li Lai
- Department of Applied Chemistry
- National Chi Nan University
- Nantou 545
- Taiwan
| | - Gene-Hsiang Lee
- Department of Chemistry
- National Taiwan University
- Taipei
- Taiwan
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23
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Wada H, Ooka S, Yamamura T, Kajiwara T. Light Lanthanide Complexes with Crown Ether and Its Aza Derivative Which Show Slow Magnetic Relaxation Behaviors. Inorg Chem 2016; 56:147-155. [DOI: 10.1021/acs.inorgchem.6b01764] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hisami Wada
- Department of Chemistry,
Faculty of Science, Nara Women’s University, Nara 630-8506, Japan
| | - Sayaka Ooka
- Department of Chemistry,
Faculty of Science, Nara Women’s University, Nara 630-8506, Japan
| | - Tomoo Yamamura
- Institute for Materials
Research, Tohoku University, Aoba-ku, Sendai 980-8577, Japan
| | - Takashi Kajiwara
- Department of Chemistry,
Faculty of Science, Nara Women’s University, Nara 630-8506, Japan
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24
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Bazhenova TA, Kovaleva NV, Shilov GV, Petrova GN, Kuznetsov DA. A Family of Titanium Complexes with Catechol Ligands: Structural Investigation and Catalytic Application. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600804] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Tamara A. Bazhenova
- Institute of Problems of Chemical Physics; Russian Academy of Sciences; 142432 Chernogolovka, Moscow region Russian Federation
| | - Nadezhda V. Kovaleva
- Institute of Problems of Chemical Physics; Russian Academy of Sciences; 142432 Chernogolovka, Moscow region Russian Federation
- Institute of Physiologically Active Compounds; Russian Academy of Sciences; 142432 Chernogolovka, Moscow region Russian Federation
| | - Gennady V. Shilov
- Institute of Problems of Chemical Physics; Russian Academy of Sciences; 142432 Chernogolovka, Moscow region Russian Federation
| | - Galina N. Petrova
- Institute of Problems of Chemical Physics; Russian Academy of Sciences; 142432 Chernogolovka, Moscow region Russian Federation
| | - Denis A. Kuznetsov
- Institute of Problems of Chemical Physics; Russian Academy of Sciences; 142432 Chernogolovka, Moscow region Russian Federation
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25
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Coletta M, McLellan R, Murphy P, Leube BT, Sanz S, Clowes R, Gagnon KJ, Teat SJ, Cooper AI, Paterson MJ, Brechin EK, Dalgarno SJ. Bis-Calix[4]arenes: From Ligand Design to the Directed Assembly of a Metal-Organic Trigonal Antiprism. Chemistry 2016; 22:8791-5. [PMID: 27166930 DOI: 10.1002/chem.201600762] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Indexed: 11/05/2022]
Abstract
Calix[4]arenes (C[4]s) are versatile platforms for the construction of polymetallic clusters containing paramagnetic metal ions. Synthetic modification at the C[4] methylene bridge allows for the design of bis-C[4]s that, depending on the linker employed, can be used to either dictate which clusters can be formed or direct the assembly of a new metal-organic polyhedron (MOP). The assembly resulting from the latter approach displays thermal stability and uptake of N2 or H2 gas, confirming that this is a viable route to the synthesis of new, functional supramolecular architectures.
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Affiliation(s)
- Marco Coletta
- Institute of Chemical Sciences, Heriot-Watt University, Riccarton, Edinburgh, EH14 4AS, UK
| | - Ross McLellan
- Institute of Chemical Sciences, Heriot-Watt University, Riccarton, Edinburgh, EH14 4AS, UK
| | - Paul Murphy
- Institute of Chemical Sciences, Heriot-Watt University, Riccarton, Edinburgh, EH14 4AS, UK
| | - Bernhard T Leube
- Institute of Chemical Sciences, Heriot-Watt University, Riccarton, Edinburgh, EH14 4AS, UK
| | - Sergio Sanz
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, EH9 3FJ, UK
| | - Rob Clowes
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK
| | - Kevin J Gagnon
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 947240, USA
| | - Simon J Teat
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 947240, USA
| | - Andrew I Cooper
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK
| | - Martin J Paterson
- Institute of Chemical Sciences, Heriot-Watt University, Riccarton, Edinburgh, EH14 4AS, UK
| | - Euan K Brechin
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, EH9 3FJ, UK.
| | - Scott J Dalgarno
- Institute of Chemical Sciences, Heriot-Watt University, Riccarton, Edinburgh, EH14 4AS, UK.
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26
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Biswas S, Das S, Rogez G, Chandrasekhar V. Hydrazone-Ligand-Based Homodinuclear Lanthanide Complexes: Synthesis, Structure, and Magnetism. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600335] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sourav Biswas
- Department of Chemistry; Indian Institute of Technology Kanpur; 208016 Kanpur India
| | - Sourav Das
- Department of Chemistry; Institute of Infrastructure Technology Research and Management; Near Khokhara Circle, Maninagar East 380026 Ahmedabad India
| | - Guillaume Rogez
- Institut de Physique et Chimie des Matériaux de Strasbourg; UMR 7504 CNRS-Université de Strasbourg; 23 rue du Loess, B.P. 43 67034 Strasbourg Cedex 2 France
| | - Vadapalli Chandrasekhar
- Department of Chemistry; Indian Institute of Technology Kanpur; 208016 Kanpur India
- National Institute of Science Education and Research; Institute of Physics Campus; Sachivalaya Marg, P.O. Sainik School 751005 Bhubaneswar India
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27
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Murashima K, Karasawa S, Yoza K, Inagaki Y, Koga N. 3- and 4-(α-diazobenzyl)pyridine-N-oxides as photoresponsive magnetic couplers for 2p–4f heterospin systems: formation of carbene–TbIII and carbene–DyIII single-molecule magnets. Dalton Trans 2016; 45:7067-77. [DOI: 10.1039/c6dt00420b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dinuclear TbIII – and DyIII – D1pyO complexes were photolyzed to afford heterospin SMMs with Ueff/kB = 30 and 39 K, respectively.
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Affiliation(s)
- Kensuke Murashima
- Graduate School of Pharmaceutical Sciences
- Kyushu University
- Fukuoka
- Japan
| | - Satoru Karasawa
- Graduate School of Pharmaceutical Sciences
- Kyushu University
- Fukuoka
- Japan
- PRESTO
| | | | - Yuji Inagaki
- Department of Applied Quantum Physics
- Kyushu University
- Fukuoka
- Japan
| | - Noboru Koga
- Graduate School of Pharmaceutical Sciences
- Kyushu University
- Fukuoka
- Japan
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28
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Upadhyay A, Das C, Langley SK, Murray KS, Srivastava AK, Shanmugam M. Heteronuclear Ni(ii)–Ln(iii) (Ln = La, Pr, Tb, Dy) complexes: synthesis and single-molecule magnet behaviour. Dalton Trans 2016; 45:3616-26. [DOI: 10.1039/c5dt04102c] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The crystal structures are reported for three heterometallic Ni2Ln and a Ni2Dy2 complex, using the Schiff base ligand 2-methoxy-6-[(E)-phenyliminomethyl] phenol. Detailed dc and ac magnetic susceptibility studies were reported for all the complexes. The complexes 3 and 4 shows frequency dependent out-of-phase susceptibility signals.
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Affiliation(s)
- Apoorva Upadhyay
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai
- India
| | - Chinmoy Das
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai
- India
| | - Stuart K. Langley
- School of Science and the Environment
- Chemistry Division
- Manchester
- Metropolitan University
- Manchester
| | | | - Anant K. Srivastava
- Department of Chemistry
- Indian Institute of Science Education and Research
- Pune 411 008
- India
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29
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Coletta M, McLellan R, Waddington A, Sanz S, Gagnon KJ, Teat SJ, Brechin EK, Dalgarno SJ. Core expansion of bis-calix[4]arene-supported clusters. Chem Commun (Camb) 2016; 52:14246-14249. [DOI: 10.1039/c6cc08059f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Stoichiometric control allows for remarkable expansion of the cores of two known bis-calix[4]arene-supported clusters, with concomitant changes to the magnetic properties.
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Affiliation(s)
- Marco Coletta
- Institute of Chemical Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | - Ross McLellan
- Institute of Chemical Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | - Amy Waddington
- Institute of Chemical Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | - Sergio Sanz
- EaStCHEM School of Chemistry
- The University of Edinburgh
- Edinburgh
- UK
| | - Kevin J. Gagnon
- Station 11.3.1
- Advanced Light Source
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
| | - Simon J. Teat
- Station 11.3.1
- Advanced Light Source
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
| | - Euan K. Brechin
- EaStCHEM School of Chemistry
- The University of Edinburgh
- Edinburgh
- UK
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30
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Royal Society of Chemistry Awards 2015. Angew Chem Int Ed Engl 2015; 54:11609-10. [DOI: 10.1002/anie.201507714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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31
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Preise der Royal Society of Chemistry für 2015. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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