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Barnes J, Borgeaud dit Avocat DP, Simmen E, Yang H, Yoder BL, Signorell R. Comparison of Magnetic Deflection among Neutral Sodium-Doped Clusters: Na(H 2O) n, Na(NH 3) n, Na(MeOH) n, and Na(DME) n. J Phys Chem A 2023; 127:8544-8555. [PMID: 37794760 PMCID: PMC10591511 DOI: 10.1021/acs.jpca.3c03820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 09/06/2023] [Indexed: 10/06/2023]
Abstract
Using a pulsed Stern-Gerlach deflection experiment, we present the results of a comparative study on the magnetic properties of neutral sodium-doped solvent clusters Na(Sol)n with n = 1-4 (Sol: H2O, NH3, CH3OH, CH3OCH3). Experimental deflection ratios are compared with values calculated from molecular dynamics simulations. NaNH3 and NaH2O are deflected as a spin 1/2 system, consistent with spin transitions occurring on a time scale significantly longer than 100 μs. For all other clusters, reduced deflection is observed. The observed magnetic deflection behavior is correlated to the number of thermally populated rotational states in the clusters. We discuss that spin-rotational couplings allow for avoided crossings and a reduction in the effective magnetic moment of the cluster. This work attempts to understand the evolution of magnetic properties in isolated weakly bound clusters and is relevant to diamagnetic and paramagnetic species expected to exist in solvated electron systems.
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Affiliation(s)
- Jonathan
V. Barnes
- Department of Chemistry and
Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, Zürich 8093, Switzerland
| | | | - Edith Simmen
- Department of Chemistry and
Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, Zürich 8093, Switzerland
| | - Huanyu Yang
- Department of Chemistry and
Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, Zürich 8093, Switzerland
| | - Bruce L. Yoder
- Department of Chemistry and
Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, Zürich 8093, Switzerland
| | - Ruth Signorell
- Department of Chemistry and
Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, Zürich 8093, Switzerland
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2
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Barnes JV, Beck M, Hartweg S, Luski A, Yoder BL, Narevicius J, Narevicius E, Signorell R. Magnetic deflection of neutral sodium-doped ammonia clusters. Phys Chem Chem Phys 2021; 23:846-858. [DOI: 10.1039/d0cp04647g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new Stern–Gerlach setup elucidates the spin relaxation dynamics of small weakly-bound Na(NH3)n clusters.
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Affiliation(s)
- J. V. Barnes
- Department of Chemistry and Applied Biosciences, ETH Zürich
- Zürich
- Switzerland
| | - M. Beck
- Department of Chemistry and Applied Biosciences, ETH Zürich
- Zürich
- Switzerland
| | - S. Hartweg
- Department of Chemistry and Applied Biosciences, ETH Zürich
- Zürich
- Switzerland
| | - A. Luski
- Department of Chemical Physics, Weizmann Institute of Science
- Rehovot
- Israel
| | - B. L. Yoder
- Department of Chemistry and Applied Biosciences, ETH Zürich
- Zürich
- Switzerland
| | - J. Narevicius
- Department of Chemical Physics, Weizmann Institute of Science
- Rehovot
- Israel
| | - E. Narevicius
- Department of Chemical Physics, Weizmann Institute of Science
- Rehovot
- Israel
| | - R. Signorell
- Department of Chemistry and Applied Biosciences, ETH Zürich
- Zürich
- Switzerland
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3
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Gao W, Yao X, Sun Y, Sun W, Liu H, Liu J, Liu Y, Zhang X. Theoretical Study on Sandwich-Like Transition-Metal-Cyclooctatetraene Clusters and One-Dimensional Infinite Molecular Wires. ACS OMEGA 2019; 4:9739-9744. [PMID: 31460064 PMCID: PMC6648966 DOI: 10.1021/acsomega.9b00637] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 05/09/2019] [Indexed: 06/10/2023]
Abstract
Using density functional theory calculations, we investigated the structure and electronic properties of cyclooctatetraene (C8H8, COT)-ligand mono- or bi-transition-metal (M) sandwich clusters, M n (COT) n+1 (M = Sc, Ti, Cr, Mn, n = 1, 2) or (COT)M1(COT)M2(COT), as well as their one-dimensional infinite molecular wires. All the sandwich M-COT clusters and molecular wires are rather stable with their binding energies ranging from 3.20 to 7.48 eV per transition-metal atom. Superior to M n Bz n+1 complexes, most sandwich M-COT complexes are in their high spin states with ultrahigh magnetic moments. Moreover, one-dimensional infinite molecular wires, [Cr(COT)]∞, [(COT)V(COT)Ti]∞ and [(COT)Sc(COT)Cr]∞, are predicted to be ferromagnetic half-metals. Our findings suggest that such M-COT sandwich complexes may be potential candidates for applications in spintronics.
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Affiliation(s)
- Weicheng Gao
- College of Physics
Science and Technology, Yangzhou University, No.180 Siwangting Road, Yangzhou 225002, China
| | - Xiaojing Yao
- College of Physics Science and Information Engineering, Hebei Normal University, No. 20 Road East. 2nd Ring South, Yuhua District, Shijiazhuang 050024, China
| | - Yi Sun
- College of Physics
Science and Technology, Yangzhou University, No.180 Siwangting Road, Yangzhou 225002, China
| | - Weikang Sun
- College of Physics
Science and Technology, Yangzhou University, No.180 Siwangting Road, Yangzhou 225002, China
| | - Hongfei Liu
- College of Physics
Science and Technology, Yangzhou University, No.180 Siwangting Road, Yangzhou 225002, China
| | - Jianshuang Liu
- College of Physics
Science and Technology, Yangzhou University, No.180 Siwangting Road, Yangzhou 225002, China
| | - Yongjun Liu
- College of Physics
Science and Technology, Yangzhou University, No.180 Siwangting Road, Yangzhou 225002, China
| | - Xiuyun Zhang
- College of Physics
Science and Technology, Yangzhou University, No.180 Siwangting Road, Yangzhou 225002, China
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4
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Nakajo E, Masuda T, Yabushita S. Theoretical Study on the Photoelectron Spectra of Ln(COT) 2-: Lanthanide Dependence of the Metal-Ligand Interaction. J Phys Chem A 2016; 120:9529-9544. [PMID: 27933909 DOI: 10.1021/acs.jpca.6b10930] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
We have performed a theoretical analysis of the recently reported photoelectron (PE) spectra of the series of sandwich complex anions Ln(COT)2- (Ln = La-Lu, COT = 1,3,5,7-cyclooctatetraene), focusing on the Ln dependence of the vertical detachment energies. For most Ln, the π molecular orbitals, largely localized on the COT ligands, have the energy order of e1g < e1u < e2g < e2u as in the actinide analogues, reflecting the substantial orbital interaction with the Ln 5d and 5p orbitals. Thus, it would be expected that the lanthanide contraction would increase the orbital interaction so that the overlaps between the COT π and Ln atomic orbitals tend to increase across the series. However, the PE spectra and theoretical calculations were not consistent with this expectation, and the details have been clarified in this study. Furthermore, the energy level splitting patterns of the anion and neutral complexes have been studied by multireference ab initio methods, and the X peak splittings observed in the PE spectra only for the middle-range Ln complexes were found to be due to the specific interaction between the Ln 4f and ligand π orbitals of the neutral complexes in e2u symmetry. Because the magnitude of this 4f-ligand interaction depends critically on the final state 4f electron configuration and the spin state, a significant Ln dependence in the PE spectra is explained.
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Affiliation(s)
- Erika Nakajo
- Department of Chemistry, Faculty of Science and Technology, Keio University , 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Tomohide Masuda
- Department of Chemistry, Faculty of Science and Technology, Keio University , 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Satoshi Yabushita
- Department of Chemistry, Faculty of Science and Technology, Keio University , 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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5
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Hosoya N, Yada K, Masuda T, Nakajo E, Yabushita S, Nakajima A. Investigation of the Electronic Structures of Organolanthanide Sandwich Complex Anions by Photoelectron Spectroscopy: 4f Orbital Contribution in the Metal–Ligand Interaction. J Phys Chem A 2014; 118:3051-60. [PMID: 24742246 DOI: 10.1021/jp411660e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Natsuki Hosoya
- Department
of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1
Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Keizo Yada
- Department
of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1
Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Tomohide Masuda
- Department
of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1
Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Erika Nakajo
- Department
of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1
Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Satoshi Yabushita
- Department
of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1
Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Atsushi Nakajima
- Department
of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1
Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
- JST-ERATO,
Nakajima Designer Nanocluster Assembly Project, 3-2-1 Sakado, Takatsu-ku,
Kawasaki 213-0012, Japan
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6
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Zhang T, Tian Z, Zhu L, Zhang X, Chen Q, Wang J. Theoretical investigations on structural, electronic, and magnetic properties of TM2Np2 (Np=Naphthalene, TM=Sc–Ni) sandwich clusters. COMPUT THEOR CHEM 2013. [DOI: 10.1016/j.comptc.2013.02.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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7
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Kumari S, Roudjane M, Hewage D, Liu Y, Yang DS. High-resolution electron spectroscopy of lanthanide (Ce, Pr, and Nd) complexes of cyclooctatetraene: The role of 4f electrons. J Chem Phys 2013; 138:164307. [DOI: 10.1063/1.4801787] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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8
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Wang SJ, Li Y, Wu D, Wang YF, Li ZR. Quantum Mechanical Design and Structures of Hexanuclear Sandwich Complex and Its Multidecker Sandwich Clusters (Li6)n([18]Annulene)n+1 (n = 1–3). J Phys Chem A 2012; 116:9189-96. [DOI: 10.1021/jp306749a] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shu-Jian Wang
- Institute of Theoretical Chemistry, State Key Laboratory of Theoretical
and Computational Chemistry, Jilin University, Changchun 130023, P. R. China
| | - Ying Li
- Institute of Theoretical Chemistry, State Key Laboratory of Theoretical
and Computational Chemistry, Jilin University, Changchun 130023, P. R. China
| | - Di Wu
- Institute of Theoretical Chemistry, State Key Laboratory of Theoretical
and Computational Chemistry, Jilin University, Changchun 130023, P. R. China
| | - Yin-Feng Wang
- Jiangxi Province Key Laboratory of Coordination Chemistry, Institute
of Applied Chemistry, School of Chemistry and Chemical Engineering, Jinggangshan University, Ji’an, Jiangxi 343009,
China
| | - Zhi-Ru Li
- Institute of Theoretical Chemistry, State Key Laboratory of Theoretical
and Computational Chemistry, Jilin University, Changchun 130023, P. R. China
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9
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Li Y, Zhou Z, Chen Z. From Vanadium Naphthalene (Vn–1Npn) Sandwich Clusters to VNp Sandwich Nanowire: Structural, Energetic, Electronic, and Magnetic Properties. J Phys Chem A 2012; 116:1648-54. [DOI: 10.1021/jp2099398] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Yafei Li
- Department of Chemistry, Institute
for Functional Nanomaterials, University of Puerto Rico, Rio Piedras Campus, San Juan 00931, Puerto Rico
- Institute of New Energy Material
Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (Ministry
of Education), Computational Center for Molecular Science, Nankai University, Tianjin 300071, P. R. China
| | - Zhen Zhou
- Institute of New Energy Material
Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (Ministry
of Education), Computational Center for Molecular Science, Nankai University, Tianjin 300071, P. R. China
| | - Zhongfang Chen
- Department of Chemistry, Institute
for Functional Nanomaterials, University of Puerto Rico, Rio Piedras Campus, San Juan 00931, Puerto Rico
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10
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Roudjane M, Kumari S, Yang DS. Electronic States and Metal–Ligand Bonding of Gadolinium Complexes of Benzene and Cyclooctatetraene. J Phys Chem A 2012; 116:839-45. [DOI: 10.1021/jp208798h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Mourad Roudjane
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Sudesh Kumari
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Dong-Sheng Yang
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
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11
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12
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Lorenz V, Blaurock S, Hrib CG, Edelmann FT. The First Linear, Homoleptic Triple-Decker Sandwich Complex of an f-Element: A Molecular Model for Organolanthanide Nanowires. Organometallics 2010. [DOI: 10.1021/om1004385] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Volker Lorenz
- Chemisches Institut der Otto-von-Guericke-Univerität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
| | - Steffen Blaurock
- Chemisches Institut der Otto-von-Guericke-Univerität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
| | - Cristian G. Hrib
- Chemisches Institut der Otto-von-Guericke-Univerität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
| | - Frank T. Edelmann
- Chemisches Institut der Otto-von-Guericke-Univerität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
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13
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Summerscales OT, Jones SC, Cloke FGN, Hitchcock PB. Anti-Bimetallic Complexes of Divalent Lanthanides with Silylated Pentalene and Cyclooctatetraenyl Bridging Ligands as Molecular Models for Lanthanide-Based Polymers. Organometallics 2009. [DOI: 10.1021/om900520h] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Owen T. Summerscales
- Department of Chemistry and Biochemistry, School of Life Sciences, University of Sussex, Brighton BN1 9QJ, U.K
| | - Simon C. Jones
- Department of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332
| | - F. Geoffrey N. Cloke
- Department of Chemistry and Biochemistry, School of Life Sciences, University of Sussex, Brighton BN1 9QJ, U.K
| | - Peter B. Hitchcock
- Department of Chemistry and Biochemistry, School of Life Sciences, University of Sussex, Brighton BN1 9QJ, U.K
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14
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Zhang X, Ng MF, Wang Y, Wang J, Yang SW. Theoretical studies on structural, magnetic, and spintronic characteristics of sandwiched Eu(n)COT(n+1) (n = 1-4) clusters. ACS NANO 2009; 3:2515-2522. [PMID: 19685860 DOI: 10.1021/nn900401b] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Europium (Eu)-cyclootetatrene (COT = C(8)H(8)) multidecker clusters (Eu(n)COT(n+1), n = 1-4) are studied by relativistic density functional theory calculations. These clusters are found to be thermodynamically stable with freely rotatable COT rings, and their total magnetic moments (MMs) increase linearly along with the number of Eu atoms. Each Eu atom contributes about 7 mu(B) to the cluster. Meanwhile, the internal COT rings have little MM contribution while the external COT rings have about 1 mu(B) MM aligned in opposite direction to that of the Eu atoms. The total MM of the Eu(n)COT(n+1) clusters can thus be generalized as 7n - 2 mu(B) where n is the number of Eu atoms. Besides, the ground states of these clusters are ferromagnetic and energetically competitive with the antiferromagnetic states, meaning that their spin states are very unstable, especially for larger clusters. More importantly, we uncover an interesting bonding characteristic of these clusters in which the interior ionic structure is capped by two hybrid covalent-ionic terminals. We suggest that such a characteristic makes the Eu(n)COT(n+1) clusters extremely stable. Finally, we reveal that for the positively charged clusters, the hybrid covalent-ionic terminals will tip further toward the interior part of the clusters to form deeper covalent-ionic caps. In contrast, the negatively charged clusters turn to pure ionic structures.
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Affiliation(s)
- Xiuyun Zhang
- Department of Physics, Southeast University, Nanjing 211189, PR China
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15
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Zhang X, Wang J, Gao Y, Zeng XC. Ab initio study of structural and magnetic properties of TM(n)(ferrocene)(n+1) (TM = Sc, Ti, V, Mn) sandwich clusters and nanowires (n = infinity). ACS NANO 2009; 3:537-545. [PMID: 19256546 DOI: 10.1021/nn800794c] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Structural and magnetic properties of multidecker sandwich clusters TM(n)(ferrocene)(n+1) [TM = V, Ti, Sc, Mn, ferrocene=FeCp(2), n = 1-3] and corresponding one-dimensional sandwich nanowires (n = infinity) are studied by means of gradient-corrected density functional theory. The TM(n)(FeCp(2))(n+1) clusters are highly stable polyferrocene-like sandwich structures due to strong Fe-Cp interaction. The total magnetic moment of TM(n)(FeCp(2))(n+1) (TM = V, Ti, Mn) increases linearly with the size n. More strikingly, Ti(n)(FeCp(2))(n+1) and V(n)(FeCp(2))(n+1) (n = 1-3) exhibit high magnetic moments 4, 8, 12 mu(B) and 1, 6, 11 mu(B), respectively. In contrast, Sc(n)(FeCp(2))(n+1) clusters are paramagnetic. The [TM(FeCp(2))](infinity) sandwich nanowires are ferromagnetic semiconductors whose band gap is 0.361, 0.506, 0.51, and 1.310 eV, respectively, for TM = Ti, Sc, V, and Mn. Among the four sandwich nanowires, [V(FeCp(2))](infinity) nanowire possesses the highest magnetic moment (5 mu(B)) per unit cell.
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Affiliation(s)
- Xiuyun Zhang
- Department of Physics, Southeast University, Nanjing, 211189, PR China
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16
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Kandalam AK, Jena P, Li X, Eustis SN, Bowen KH. Photoelectron spectroscopy and theoretical studies of [Com(pyrene)n]− (m=1,2 and n=1,2) complexes. J Chem Phys 2008; 129:134308. [DOI: 10.1063/1.2982786] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
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17
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Li X, Eustis SN, Bowen KH, Kandalam A. Photoelectron spectroscopic study of the anionic transition metalorganic complexes [Fe1,2(COT)]− and [Co(COT)]−. J Chem Phys 2008; 129:124312. [DOI: 10.1063/1.2977980] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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18
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Miyajima K, Knickelbein MB, Nakajima A. Stern-gerlach study of multidecker lanthanide-cyclooctatetraene sandwich clusters. J Phys Chem A 2008; 112:366-75. [PMID: 18166028 DOI: 10.1021/jp0766196] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Multilayer lanthanide-cyclooctatetraene organometallic clusters, Lnn(C8H8)m (Ln = Eu, Tb, Ho, Tm; n = 1-7; m = n - 1, n, n + 1) were produced by a laser vaporization synthesis method. The magnetic deflections of these organometallic sandwich clusters were measured by a molecular beam magnetic deflection technique. Most of the sandwich species displayed one-sided deflection, while some of smaller Ln-C8H8 clusters showed symmetric broadening without or with only very small (or absent) net high-field deflection. In general, the total magnetic moments, calculated from the magnitude of the beams deflections, increase with the number of lanthanide atoms (i.e., with increasing sandwich layers); however for Tb-, Ho-, and Tm-C8H8 clusters with n > 3, the suppression of the magnetic moments was observed, possibly through antiferromagnetic interactions. For Eu-C8H8 clusters, we observe a linear increase of the magnetic moments with the number of Eu atoms up to n = 7, with average magnetic moment per Eu atom around 7 muB--similar to that displayed by conventionally synthesized mononuclear EuIIC8H8 complexes, indicating that Eu atoms exist as Eu2+ ions in the full sandwich Eun(C8H8)n+1 clusters. These results suggest that Eun(C8H8)n+1 is a promising candidate for a high-spin, one-dimensional building block in organometallic magnetic materials.
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Affiliation(s)
- Ken Miyajima
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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19
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Lorenz V, Edelmann A, Blaurock S, Freise F, Edelmann FT. A Surprising Solvent Effect on the Crystal Structure of an Anionic Lanthanide Sandwich Complex. Organometallics 2007. [DOI: 10.1021/om7006776] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Volker Lorenz
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
| | - Anja Edelmann
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
| | - Steffen Blaurock
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
| | - Fritjof Freise
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
| | - Frank T. Edelmann
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
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20
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Lorenz V, Edelmann A, Blaurock S, Freise F, Edelmann FT. A Unique Organolanthanide Cluster Containing Bulky Cyclooctatetraenyl Ligands. Organometallics 2007. [DOI: 10.1021/om700589r] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Volker Lorenz
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
| | - Anja Edelmann
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
| | - Steffen Blaurock
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
| | - Fritjof Freise
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
| | - Frank T. Edelmann
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
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21
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Miyajima K, Yabushita S, Knickelbein MB, Nakajima A. Stern−Gerlach Experiments of One-Dimensional Metal−Benzene Sandwich Clusters: Mn(C6H6)m (M = Al, Sc, Ti, and V). J Am Chem Soc 2007; 129:8473-80. [PMID: 17579402 DOI: 10.1021/ja070137q] [Citation(s) in RCA: 119] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A molecular beam of multilayer metal-benzene organometallic clusters Mn(C6H6)m (M = Al, Sc, Ti, and V) was produced by a laser vaporization synthesis method, and their magnetic deflections were measured. Multidecker sandwich clusters of transition-metal atoms and benzene Scn(C6H6)n+1 (n = 1, 2) and Vn(C6H6)n+1 (n = 1-4) possess magnetic moments that increase monotonously with n. The magnetic moments of Al(C6H6), Scn(C6H6)n+1, and Vn(C6H6)n+1 are smaller than that of their spin-only values as a result of intracluster spin relaxation, an effect that depends on the orbital angular momenta and bonding characters of the orbitals containing electron spin. While Ti(C6H6)2 was found to be nonmagnetic, Tin(C6H6)n+1 (n = 2, 3) possess nonzero magnetic moments. The mechanism of ferromagnetic spin ordering in M2(C6H6)3 (M = Sc, Ti, V) is discussed qualitatively in terms of molecular orbital analysis. These sandwich species represent a new class of one-dimensional molecular magnets in which the transition-metal atoms are formally zerovalent.
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Affiliation(s)
- Ken Miyajima
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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