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Semakin AN, Nelyubina YV, Ioffe SL, Sukhorukov AY. 2,4,9‐Triazaadamantanes with “Clickable” Groups: Synthesis, Structure and Applications as Tripodal Platforms. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000832] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Artem N. Semakin
- Laboratory of organic and metal‐organic nitrogen‐oxygen systems N. D. Zelinsky Institute of Organic Chemistry Leninsky prospect, 47 119991 Moscow Russia
| | - Yulia V. Nelyubina
- Center for molecular composition studies A. N. Nesmeyanov Institute of Organoelement Compounds Vavilov str. 28 119991 Moscow Russia
| | - Sema L. Ioffe
- Laboratory of organic and metal‐organic nitrogen‐oxygen systems N. D. Zelinsky Institute of Organic Chemistry Leninsky prospect, 47 119991 Moscow Russia
| | - Alexey Yu. Sukhorukov
- Laboratory of organic and metal‐organic nitrogen‐oxygen systems N. D. Zelinsky Institute of Organic Chemistry Leninsky prospect, 47 119991 Moscow Russia
- Department of Innovational Materials and Technologies Chemistry Plekhanov Russian University of Economics Stremyanny per. 36 117997 Moscow Russia
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2
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Putting the Squeeze on Molecule-Based Magnets: Exploiting Pressure to Develop Magneto-Structural Correlations in Paramagnetic Coordination Compounds. MAGNETOCHEMISTRY 2020. [DOI: 10.3390/magnetochemistry6030032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The cornerstone of molecular magnetism is a detailed understanding of the relationship between structure and magnetic behaviour, i.e., the development of magneto-structural correlations. Traditionally, the synthetic chemist approaches this challenge by making multiple compounds that share a similar magnetic core but differ in peripheral ligation. Changes in the ligand framework induce changes in the bond angles and distances around the metal ions, which are manifested in changes to magnetic susceptibility and magnetisation data. This approach requires the synthesis of a series of different ligands and assumes that the chemical/electronic nature of the ligands and their coordination to the metal, the nature and number of counter ions and how they are positioned in the crystal lattice, and the molecular and crystallographic symmetry have no effect on the measured magnetic properties. In short, the assumption is that everything outwith the magnetic core is inconsequential, which is a huge oversimplification. The ideal scenario would be to have the same complex available in multiple structural conformations, and this is something that can be achieved through the application of external hydrostatic pressure, correlating structural changes observed through high-pressure single crystal X-ray crystallography with changes observed in high-pressure magnetometry, in tandem with high-pressure inelastic neutron scattering (INS), high-pressure electron paramagnetic resonance (EPR) spectroscopy, and high-pressure absorption/emission/Raman spectroscopy. In this review, which summarises our work in this area over the last 15 years, we show that the application of pressure to molecule-based magnets can (reversibly) (1) lead to changes in bond angles, distances, and Jahn–Teller orientations; (2) break and form bonds; (3) induce polymerisation/depolymerisation; (4) enforce multiple phase transitions; (5) instigate piezochromism; (6) change the magnitude and sign of pairwise exchange interactions and magnetic anisotropy, and (7) lead to significant increases in magnetic ordering temperatures.
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3
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Gupta T, Rajaraman G. Modelling spin Hamiltonian parameters of molecular nanomagnets. Chem Commun (Camb) 2018; 52:8972-9008. [PMID: 27366794 DOI: 10.1039/c6cc01251e] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Molecular nanomagnets encompass a wide range of coordination complexes possessing several potential applications. A formidable challenge in realizing these potential applications lies in controlling the magnetic properties of these clusters. Microscopic spin Hamiltonian (SH) parameters describe the magnetic properties of these clusters, and viable ways to control these SH parameters are highly desirable. Computational tools play a proactive role in this area, where SH parameters such as isotropic exchange interaction (J), anisotropic exchange interaction (Jx, Jy, Jz), double exchange interaction (B), zero-field splitting parameters (D, E) and g-tensors can be computed reliably using X-ray structures. In this feature article, we have attempted to provide a holistic view of the modelling of these SH parameters of molecular magnets. The determination of J includes various class of molecules, from di- and polynuclear Mn complexes to the {3d-Gd}, {Gd-Gd} and {Gd-2p} class of complexes. The estimation of anisotropic exchange coupling includes the exchange between an isotropic metal ion and an orbitally degenerate 3d/4d/5d metal ion. The double-exchange section contains some illustrative examples of mixed valance systems, and the section on the estimation of zfs parameters covers some mononuclear transition metal complexes possessing very large axial zfs parameters. The section on the computation of g-anisotropy exclusively covers studies on mononuclear Dy(III) and Er(III) single-ion magnets. The examples depicted in this article clearly illustrate that computational tools not only aid in interpreting and rationalizing the observed magnetic properties but possess the potential to predict new generation MNMs.
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Affiliation(s)
- Tulika Gupta
- Department of Chemistry, IIT Powai, Mumbai-400076, India.
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4
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Wang K, Tang S, Hu ZB, Zou HH, Wang XL, Li Y, Zhang SH, Chen ZL, Liang FP. A family of 3d metal clusters based on N–N single bonds bridged quasi-linear trinuclear cores: the Mn analogue displaying single-molecule magnet behavior. RSC Adv 2018; 8:6218-6224. [PMID: 35540381 PMCID: PMC9078267 DOI: 10.1039/c7ra12844d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 01/31/2018] [Indexed: 12/26/2022] Open
Abstract
The reactions of the diacylhydrazine ligands N,N′-bisalicyl-2,6-pyridine dicarbohydrazide (H6sphz) and N,N′-bis(3-methoxysalicyl)-2,6-pyridine dicarbohydrazide (H6msphz) with various 3d metal salts, afforded a series of coordination clusters, namely, [MnIII2MnII(sphz)(acac)2(CH3OH)4] (1, acac− = acetylacetone anions), [NiII3(msphz)(Py)4] (2, Py = pyridine), [CuII6(sphz)2(Py)4] (3) and [CuII6(msphz)2(Py)4]·2DMF·2H2O (4). Cluster 1 and 2 are single ligand assembled quasi-linear trinuclear structures. Both 3 and 4 consist a pair of quasi-linear {Cu3} cores, which are linked together by two crossed ligands. The adjacent 3d metal ions in all trinuclear cores of 1–4 are bridged by N–N single bonds of ligands, which convey ferromagnetic (FM) interactions between 3d metal centers of 1, and antiferromagnetic (AFM) interactions between those of 2–4. In particular, the FM interactions and linear arrangement of mixed-valence Mn centers in 1 result in a large spin ground states value (ST) of 13/2, as well as single-molecule magnet (SMM) behavior of slow relaxation and hysteresis of magnetization. A family of 3d metal clusters featuring N–N single bonds bridged quasi-linear trinuclear cores were designed and synthesized. The Mn analogue represents a very rare case of quasi-linear 3d SMM using N–N single bonds as magnetic coupling pathways.![]()
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Affiliation(s)
- Kai Wang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials
- College of Chemistry and Bioengineering
- Guilin University of Technology
- Guilin
- China
| | - Shen Tang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials
- College of Chemistry and Bioengineering
- Guilin University of Technology
- Guilin
- China
| | - Zhao-Bo Hu
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmacy
- Guangxi Normal University
- Guilin
- China
| | - Hua-Hong Zou
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmacy
- Guangxi Normal University
- Guilin
- China
| | - Xiao-Lu Wang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmacy
- Guangxi Normal University
- Guilin
- China
| | - Yan Li
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials
- College of Chemistry and Bioengineering
- Guilin University of Technology
- Guilin
- China
| | - Shu-Hua Zhang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials
- College of Chemistry and Bioengineering
- Guilin University of Technology
- Guilin
- China
| | - Zi-Lu Chen
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- School of Chemistry and Pharmacy
- Guangxi Normal University
- Guilin
- China
| | - Fu-Pei Liang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials
- College of Chemistry and Bioengineering
- Guilin University of Technology
- Guilin
- China
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5
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Singh SK, Vignesh KR, Archana V, Rajaraman G. Theoretical insights into the origin of magnetic exchange and magnetic anisotropy in {Re(IV)-M(II)} (M = Mn, Fe, Co, Ni and Cu) single chain magnets. Dalton Trans 2017; 45:8201-14. [PMID: 27096553 DOI: 10.1039/c5dt04928h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Density functional calculations have been performed on a series of {Re(IV)-M(II)} (M = Mn(), Fe(), Co(), Ni(), Cu()) complexes to compute the magnetic exchange interaction between the Re(IV) and M(II) ions, and understand the mechanism of magnetic coupling in this series. DFT calculations yield J values of -5.54 cm(-1), +0.44 cm(-1), +10.5 cm(-1), +4.54 cm(-1) and +19 cm(-1) for complexes respectively, and these estimates are in general agreement with the experimental reports. Using molecular orbital (MO) and overlap integral analysis, we have established a mechanism of coupling for a {3d-5d} pair and the proposed mechanism rationalises both the sign and the magnitude of J values observed in this series. Our proposed mechanism of coupling has five contributing factors: (i) (Re)dyz-dyz(3d) overlap, (ii) (Re)dxz-dxz(3d) overlap, (iii) (Re)dxy-dxy(3d) overlap, (iv) (Re)eg-t2g(3d) overlaps and (v) (Re)eg-eg(3d) overlaps. Here, the first two terms are found to contribute to the antiferromagnetic part of the exchange, while the other three contribute to the ferromagnetic part. The last two terms correspond to the cross-interactions and also contribute to the ferromagnetic part of the exchange. A record high ferromagnetic J value observed for the {Re(IV)-Cu(II)} pair in complex is found to be due to a significant cross interaction between the dz(2) orbital of the Re(IV) ion and the dx(2)-y(2) orbital of the Cu(ii) ion. Magneto-structural correlations are developed for Re-C and M-N bond lengths and Re-C-N and M-N-C bond angles. Among the developed correlations, the M-N-C bond angle is found to be the most sensitive parameter which influences the sign and strength of J values in this series. The J values are found to be more positive (or less negative) as the angle increases, indicating stronger ferromagnetic coupling at linear M-N-C angles. Apart from the magnetic exchange interaction, we have also estimated the magnetic anisotropy of [ReCl4(CN)2](2-) and [(DMF)4(CN)M(II)(CN)] (M(II)-Fe(II), Co(II) and Ni(II)) units using the state-of-the-art ab initio CASSCF/PT2/RASSI-SO/SINGLE_ANISO approach. The calculated D and E values for these building units are found to be in agreement with the available experimental results. Particularly a large positive D computed for the [ReCl4(CN)2](2-) unit was found to arise from dxz/dyz → dxy excitations corresponding to the low-lying doublet states. Similarly, a very large positive D value computed for Fe(II) and Co(II) units are also rationalised based on the corresponding ground state electronic configurations computed. The non-collinearity of the Re(IV) ion and the M(II) ion axial anisotropy (DZZ) axis are found to diminish the anisotropy of the building unit, leading to the observation of moderate relaxation barriers for these molecules.
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Affiliation(s)
- Saurabh Kumar Singh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Kuduva R Vignesh
- IITB-Monash Research Academy, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India
| | - Velloth Archana
- 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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6
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Mukherjee S, Lu J, Velmurugan G, Singh S, Rajaraman G, Tang J, Ghosh SK. Influence of Tuned Linker Functionality on Modulation of Magnetic Properties and Relaxation Dynamics in a Family of Six Isotypic Ln2 (Ln = Dy and Gd) Complexes. Inorg Chem 2016; 55:11283-11298. [DOI: 10.1021/acs.inorgchem.6b01863] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Soumya Mukherjee
- Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pashan, Pune 411008, India
| | - Jingjing Lu
- State Key Laboratory of Rare Earth Resource Utilization,
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Gunasekaran Velmurugan
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra 400076, India
| | - Shweta Singh
- Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pashan, Pune 411008, India
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra 400076, India
| | - Jinkui Tang
- State Key Laboratory of Rare Earth Resource Utilization,
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Sujit K. Ghosh
- Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pashan, Pune 411008, India
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7
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Papatriantafyllopoulou C, Zartilas S, Manos MJ, Pichon C, Clérac R, Tasiopoulos AJ. A single-chain magnet based on linear [Mn(III)2Mn(II)] units. Chem Commun (Camb) 2015; 50:14873-6. [PMID: 25325676 DOI: 10.1039/c4cc05687f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The synthesis, structural characterization and magnetic properties of a 1D coordination polymer based on a linear mixed valent [Mn(III)2Mn(II)] repeating unit are described. It displays single-chain magnet (SCM) behaviour with an energy barrier of ∼38 K and represents the first example of a mixed valent Mn-carboxylate SCM with a linear architecture.
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8
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Jiang Y, Qin L, Li G, Abbas G, Cao Y, Wu G, Han T, Zheng YZ, Qiu S. Self-assembly of linear [Mn(II)2Mn(III)] units with end-on azido bridges: the construction of a ferromagnetic chain using ST = 7 high-spin trimers. Dalton Trans 2015; 44:5205-10. [PMID: 25686866 DOI: 10.1039/c4dt02533d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The controlled organization of high-spin complexes into 1D coordination polymers is a challenge in molecular magnetism. In this work, we report a ferromagnetic Mn trimer Mn3(HL)2(CH3OH)6(Br)4·Br·(CH3OH)2 1 (H2L = 2-[(9H-fluoren-9-yl)amino]propane-1,3-diol) with the ground spin state of ST = 7 that can be assembled into a one-dimensional coordination chain [Mn3(HL)2(CH3OH)2(Br)4(N3)(H2O)·CH3OH]∞ 2 using azido bridging ligands. Interestingly, the ferromagnetic nature of 1 is well retained in 2. However, due to the negligible magnetic anisotropy in 1, both 1 and 2 do not show slow-relaxation of magnetization, which indicates that during the process of molecular assembly not only the intratrimer magnetic interaction but also the magnetic anisotropy of the trimer can be reserved.
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Affiliation(s)
- Yuan Jiang
- State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China.
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9
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Pait M, Shatruk M, Ray D. Anion coordination selective [Mn3] and [Mn4] assemblies: synthesis, structural diversity, magnetic properties and catechol oxidase activity. Dalton Trans 2015; 44:11741-54. [DOI: 10.1039/c5dt01157d] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The present manuscript reports the detail synthesis, characterization, magnetic property and catechol oxidation study of a family of mixed valent (MnIIMnIII) and trivalent (MnIII) manganese complexes from a Schiff base ligand.
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Affiliation(s)
- Moumita Pait
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721 302
- India
| | - Michael Shatruk
- Department of Chemistry & Biochemistry
- Florida State University
- Tallahassee
- USA
| | - Debashis Ray
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721 302
- India
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10
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Vignesh KR, Langley SK, Murray KS, Rajaraman G. What controls the magnetic exchange interaction in mixed- and homo-valent Mn7 disc-like clusters? A theoretical perspective. Chemistry 2014; 21:2881-92. [PMID: 25524418 DOI: 10.1002/chem.201405679] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Indexed: 11/09/2022]
Abstract
Density functional theory (DFT) studies have been undertaken to compute the magnetic exchange and to probe the origin of the magnetic interactions in two hetero- and two homo-valent heptanuclear manganese disc-like clusters, of formula [Mn(II) 4 Mn(IV) 3 (tea)(teaH2 )3 (peolH)4 ] (1), [Mn(II) 4 Mn(III) 3 F3 (tea)(teaH)(teaH2 )2 (piv)4 (Hpiv)(chp)3 ] (2), [Mn(II) 7 (pppd)6 (tea)(OH)3 ] (3) and [Mn(II) 7 (paa)6 (OMe)6 ] (4) (teaH3 =triethanolamine, peolH4 =pentaerythritol, Hpiv=pivalic acid, Hchp=6-chloro-2-hydroxypyridine, pppd=1-phenyl-3-(2-pyridyl) propane-1,3-dione; paaH=N-(2-pyridinyl)acetoacetamide). DFT calculations yield J values, which reproduce the magnetic susceptibility data very well for all four complexes; these studies are also highlighting the likely ageing/stability problems in two of the complexes. It is found that the spin ground states, S, for complexes 1-4 are drastically different, varying from S=29/2 to S=1/2. These values are found to be controlled by the nature of the oxidation state of the metal ions and minor differences present in the structures. Extensive magneto-structural correlations are developed for the seven building unit dimers present in the complexes, with the correlations unlocking the reasons behind the differences in the magnetic properties observed. Independent of the oxidation state of the metal ions, the Mn-O-Mn/Mn-F-Mn angles are found to be the key parameters, which significantly influence the sign as well as the magnitude of the J values. The magneto-structural correlations developed here, have broad applicability and can be utilised to understand the magnetic properties of other Mn clusters.
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Affiliation(s)
- Kuduva R Vignesh
- IITB-Monash Research Academy, IIT Bombay, Mumbai, 400076 (India)
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11
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Huang J, Wu G, Bai J, Jiang Y, Li G, Qiu S, Clérac R. Synthesis of an S(T) = 7 [Mn3] mixed-valence complex based on 1,3-propanediol ligand derivatives and its one-dimensional assemblies. Inorg Chem 2013; 52:11051-9. [PMID: 24028384 DOI: 10.1021/ic401269p] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Controlled organization of high-spin complexes and single-molecule magnets is a great challenge in molecular magnetism in order to study the effect of the intercomplex magnetic interactions on the intrinsic properties of a given magnetic object. In this work, a new S(T) = 7 trinuclear mixed-valence Mn complex, [Mn(III)Mn(II)2(LA)2(Br)4(CH3OH)6] ·Br·(CH3OH)(1.5)·(H2O)(0.5) (1), is reported using a pyridinium-functionalized 1,3-propanediol ligand (H2L(A)Br = 1-(3-bromo-2,2-bis(hydroxymethyl)propyl)pyridinium bromide). Using azido anions as bridging ligands and different pyridinium-functionalized 1,3-propanediol ligands (H2L(B)Br = 1-(3-bromo-2,2-bis(hydroxymethyl)propyl)-4-picolinium bromide; H2L(C)Br = 1-(3-bromo-2,2-bis(hydroxymethyl)propyl)-3,5-lutidinium bromide), the linear [Mn(III)Mn(II)2L2X4](+) building block has been assembled into one-dimensional coordination networks: [Mn(III)Mn(II)2(LA)2(Br)4(CH3OH)4(N3)]·((C2H5)2O)1.25 (2∞), [Mn(III)Mn(II)2(L(B))2(Br)4(C2H5OH)(CH3OH)(H2O)2(N3)]·(H2O)0.25 (3∞), and [Mn(III)Mn(II)2(L(C))2(Cl)(3.8)(Br)(0.2)(C2H5OH)3(CH3OH)(N3)] (4∞). The syntheses, characterization, crystal structures, and magnetic properties of these new [Mn3]-based materials are reported.
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Affiliation(s)
- Jian Huang
- State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, Jilin University , 2699 Qianjin Street, 130012 Changchun, P. R. China
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12
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Hänninen MM, Välivaara J, Mota AJ, Colacio E, Lloret F, Sillanpää R. Ferromagnetic dinuclear mixed-valence Mn(II)/Mn(III) complexes: building blocks for the higher nuclearity complexes. structure, magnetic properties, and density functional theory calculations. Inorg Chem 2013; 52:2228-41. [PMID: 23363337 DOI: 10.1021/ic302731z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of six mixed-valence Mn(II)/Mn(III) dinuclear complexes were synthesized and characterized by X-ray diffraction. The reactivity of the complexes was surveyed, and structures of three additional trinuclear mixed-valence Mn(III)/Mn(II)/Mn(III) species were resolved. The magnetic properties of the complexes were studied in detail both experimentally and theoretically. All dinuclear complexes show ferromagnetic intramolecular interactions, which were justified on the basis of the electronic structures of the Mn(II) and Mn(III) ions. The large Mn(II)-O-Mn(III) bond angle and small distortion of the Mn(II) cation from the ideal square pyramidal geometry were shown to enhance the ferromagnetic interactions since these geometrical conditions seem to favor the orthogonal arrangement of the magnetic orbitals.
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Affiliation(s)
- Mikko M Hänninen
- Department of Chemistry, University of Jyväskylä, P.O. Box 35, 40014 Jyväskylä, Finland
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13
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Boeckmann J, Näther C. Metamagnetism and long range ordering in μ-1,3 bridging transition metal thiocyanato coordination polymers. Polyhedron 2012. [DOI: 10.1016/j.poly.2011.10.013] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Zhou CL, Wang ZM, Wang BW, Gao S. A oximato-bridged linear trinuclear [MnIVMnIIIMnIV] single-molecule magnet. Dalton Trans 2012; 41:13620-5. [DOI: 10.1039/c2dt31039b] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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15
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Saha A, Abboud KA, Christou G. New Mixed-Valent Mn Clusters from the Use of N,N,N′,N′-Tetrakis(2-hydroxyethyl)ethylenediamine (edteH4): Mn3, Mn4, Mn6, and Mn10. Inorg Chem 2011; 50:12774-84. [DOI: 10.1021/ic201916d] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Arpita Saha
- Department
of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
| | - Khalil A. Abboud
- Department
of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
| | - George Christou
- Department
of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United States
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16
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Wriedt M, Näther C. Dimorphic Modifications of the Thiocyanato-Bridged Coordination Polymer [Ni(NCS)2(pyridazine)(H2O)0.5]n with Different Magnetic Properties. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000846] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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17
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Three New Iron(II) Thiocyanato Coordination Polymers Based on 4,4′-Bipyridine as Ligand and the Influence of Methanol on Their Structures. Z Anorg Allg Chem 2010. [DOI: 10.1002/zaac.200900582] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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18
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Wriedt M, Näther C. Synthesis, Crystal Structure, and Thermal, Magnetic and Spectroscopic Properties of New Thiocyanato Transition Metal Coordination Polymers Based on Pyrimidine as Ligand. Z Anorg Allg Chem 2010. [DOI: 10.1002/zaac.200900346] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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19
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Boeckmann J, Näther C. Solid-state transformation of [Co(NCS)2(pyridine)4] into [Co(NCS)2(pyridine)2]n: from Curie–Weiss paramagnetism to single chain magnetic behaviour. Dalton Trans 2010; 39:11019-26. [PMID: 20949144 DOI: 10.1039/c0dt00904k] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Jan Boeckmann
- Institut für Anorganische Chemie, Universität zu Kiel, Max-Eyth-Straße 2, 24098, Kiel, Germany
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20
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Wriedt M, Näther C. Rational design of bridging selenocyanates by thermal decomposition reactions. Chem Commun (Camb) 2010; 46:4707-9. [PMID: 20583337 DOI: 10.1039/c0cc00064g] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Mario Wriedt
- Institut für Anorganische Chemie, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Str., 2, 24118, Kiel, Germany
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21
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Wriedt M, Näther C. Synthesis, Crystal Structure, Thermal, Spectroscopic and Magnetic Properties of a 2D Grid-like Copper(II) μ-1,1 Isocyanato Coordination Polymer with Pyrazine Bridges. Z Anorg Allg Chem 2009. [DOI: 10.1002/zaac.200900069] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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22
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Wriedt M, Sellmer S, Näther C. Thermal Decomposition Reactions as Tool for the Synthesis of New Metal Thiocyanate Diazine Coordination Polymers with Cooperative Magnetic Phenomena. Inorg Chem 2009; 48:6896-903. [PMID: 20507115 DOI: 10.1021/ic9002498] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mario Wriedt
- Institut für Anorganische Chemie, Universität zu Kiel, Max-Eyth-Strasse 2, 24098 Kiel, Germany
| | - Sina Sellmer
- Institut für Anorganische Chemie, Universität zu Kiel, Max-Eyth-Strasse 2, 24098 Kiel, Germany
| | - Christian Näther
- Institut für Anorganische Chemie, Universität zu Kiel, Max-Eyth-Strasse 2, 24098 Kiel, Germany
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23
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Wriedt M, Sellmer S, Näther C. Coordination polymer changing its magnetic properties and colour by thermal decomposition: synthesis, structure and properties of new thiocyanato iron(ii) coordination polymers based on 4,4′-bipyridine as ligand. Dalton Trans 2009:7975-84. [PMID: 19771360 DOI: 10.1039/b907645j] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Mario Wriedt
- Institut für Anorganische Chemie, Universität zu Kiel, Max-Eyth-Strasse 2, 24098 Kiel, Germany
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24
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Lawrence J, Yang EC, Hendrickson DN, Hill S. Magnetic quantum tunneling: key insights from multi-dimensional high-field EPR. Phys Chem Chem Phys 2009; 11:6743-9. [DOI: 10.1039/b908460f] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Tidmarsh IS, Batchelor LJ, Scales E, Laye RH, Sorace L, Caneschi A, Schnack J, McInnes EJL. Tri-, tetra- and octa-metallic vanadium(III) clusters from new, simple starting materials: interplay of exchange and anisotropy effects. Dalton Trans 2009:9402-9. [DOI: 10.1039/b911586b] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Prescimone A, Sanchez-Benitez J, Kamenev KV, Moggach SA, Lennie AR, Warren JE, Murrie M, Parsons S, Brechin EK. High pressure effects on a trimetallic MnII/III SMM. Dalton Trans 2009:7390-5. [DOI: 10.1039/b908718d] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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