51
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Mereacre V, Klöwer F, Lan Y, Clérac R, Wolny JA, Schünemann V, Anson CE, Powell AK. Spin relaxation in antiferromagnetic Fe-Fe dimers slowed down by anisotropic Dy(III) ions. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2013; 4:807-814. [PMID: 24367750 PMCID: PMC3869222 DOI: 10.3762/bjnano.4.92] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Accepted: 11/14/2013] [Indexed: 06/03/2023]
Abstract
By using Mössbauer spectroscopy in combination with susceptibility measurements it was possible to identify the supertransferred hyperfine field through the oxygen bridges between Dy(III) and Fe(III) in a {Fe4Dy2} coordination cluster. The presence of the dysprosium ions provides enough magnetic anisotropy to "block" the hyperfine field that is experienced by the iron nuclei. This has resulted in magnetic spectra with internal hyperfine fields of the iron nuclei of about 23 T. The set of data permitted us to conclude that the direction of the anisotropy in lanthanide nanosize molecular clusters is associated with the single ion and crystal field contributions and (57)Fe Mössbauer spectroscopy may be informative with regard to the the anisotropy not only of the studied isotope, but also of elements interacting with this isotope.
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Affiliation(s)
- Valeriu Mereacre
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstr. 15, D-76128 Karlsruhe, Germany
| | - Frederik Klöwer
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstr. 15, D-76128 Karlsruhe, Germany
| | - Yanhua Lan
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstr. 15, D-76128 Karlsruhe, Germany
| | - Rodolphe Clérac
- CNRS, CRPP, UPR 8641, F-33600 Pessac, France
- Univ Bordeaux, CRPP, UPR 8641, F-33600 Pessac, France
| | - Juliusz A Wolny
- Institute of Physics, University of Kaiserslautern, Erwin Schrödingerstr. 56, D-67653 Kaiserslautern, Germany
| | - Volker Schünemann
- Institute of Physics, University of Kaiserslautern, Erwin Schrödingerstr. 56, D-67653 Kaiserslautern, Germany
| | - Christopher E Anson
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstr. 15, D-76128 Karlsruhe, Germany
| | - Annie K Powell
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstr. 15, D-76128 Karlsruhe, Germany
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Postfach 3640, D-76021 Karlsruhe, Germany
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52
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Kizas CM, Papatriantafyllopoulou C, Pissas M, Sanakis Y, Javed A, Tasiopoulos AJ, Lampropoulos C. Synthesis, magnetic and spectroscopic characterization of a new Fe7 cluster with a six-pointed star topology. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.05.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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53
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Papatriantafyllopoulou C, Kizas CM, Manos MJ, Boudalis A, Sanakis Y, Tasiopoulos AJ. Hexanuclear complexes from the use of a series of amino-alcohol ligands in Fe chemistry. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.04.035] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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54
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Hazra S, Bhattacharya S, Singh MK, Carrella L, Rentschler E, Weyhermueller T, Rajaraman G, Mohanta S. Syntheses, Structures, Magnetic Properties, and Density Functional Theory Magneto-Structural Correlations of Bis(μ-phenoxo) and Bis(μ-phenoxo)-μ-acetate/Bis(μ-phenoxo)-bis(μ-acetate) Dinuclear FeIIINiII Compounds. Inorg Chem 2013; 52:12881-92. [DOI: 10.1021/ic400345w] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Susanta Hazra
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700 009, India
| | - Sagarika Bhattacharya
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700 009, India
| | - Mukesh Kumar Singh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Luca Carrella
- Institut für
Anorganische Chemie und Analytische Chemie, Johannes-Gutenberg Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Eva Rentschler
- Institut für
Anorganische Chemie und Analytische Chemie, Johannes-Gutenberg Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Thomas Weyhermueller
- Max-Planck-Institut für Chemische Energiekonversion, Stiftstr 34-36, 45470 Mülheim an der Ruhr, Germany
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Sasankasekhar Mohanta
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Kolkata 700 009, India
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55
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Abbas G, Lan Y, Mereacre V, Buth G, Sougrati MT, Grandjean F, Long GJ, Anson CE, Powell AK. Synthesis, Magnetism, and 57Fe Mössbauer Spectroscopic Study of a Family of [Ln3Fe7] Coordination Clusters (Ln = Gd, Tb, and Er). Inorg Chem 2013; 52:11767-77. [DOI: 10.1021/ic401011d] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Ghulam Abbas
- Institut für
Anorganische Chemie, Karlsruhe Institute of Technology, Engesserstrasse
15, D-76131 Karlsruhe, Germany
| | - Yanhua Lan
- Institut für
Anorganische Chemie, Karlsruhe Institute of Technology, Engesserstrasse
15, D-76131 Karlsruhe, Germany
| | - Valeriu Mereacre
- Institut für
Anorganische Chemie, Karlsruhe Institute of Technology, Engesserstrasse
15, D-76131 Karlsruhe, Germany
| | | | | | | | - Gary J. Long
- Department of Chemistry, Missouri University of Science
and Technology, University of Missouri, Rolla, Missouri 65409-0010, United States
| | - Christopher E. Anson
- Institut für
Anorganische Chemie, Karlsruhe Institute of Technology, Engesserstrasse
15, D-76131 Karlsruhe, Germany
| | - Annie K. Powell
- Institut für
Anorganische Chemie, Karlsruhe Institute of Technology, Engesserstrasse
15, D-76131 Karlsruhe, Germany
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56
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Zhang D, Wang C, Li S, Liu J, Ma P, Wang J, Niu J. Syntheses, characterization and magnetic properties of two novel inorganic–organic tungstoferrites, [FeIII4(H2O)2(B-α-FeIIIW9O34)2]10−. J SOLID STATE CHEM 2013. [DOI: 10.1016/j.jssc.2012.09.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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57
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Xiang H, Mereacre V, Lan Y, Lu TB, Anson CE, Powell AK. Direct observation of the role of lanthanides in stabilizing a ferromagnetic spin orientation in a weak FeIII–FeIII antiferromagnet. Chem Commun (Camb) 2013; 49:7385-7. [PMID: 23703636 DOI: 10.1039/c3cc42416b] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Hua Xiang
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstrasse 15, 76128 Karlsruhe, Germany
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58
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Russell ME, Hawes CS, Ferguson A, Polson MIJ, Chilton NF, Moubaraki B, Murray KS, Kruger PE. Synthesis, structural and magnetic characterisation of iron(ii/iii), cobalt(ii) and copper(ii) cluster complexes of the polytopic ligand: N-(2-pyridyl)-3-carboxypropanamide. Dalton Trans 2013; 42:13576-83. [DOI: 10.1039/c3dt51301g] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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59
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Ako AM, Lan Y, Mereacre V, Ruiz E, Aravena D, Anson CE, Powell AK. Spins on a curved surface: an FeIII14 ferracalixarene. Dalton Trans 2013; 42:9606-12. [DOI: 10.1039/c3dt50345c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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60
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Zhou Q, Yang F, Liu D, Peng Y, Li G, Shi Z, Feng S. Synthesis, structures, and magnetic properties of a family of 3d–4f [Na2Fe6Ln2] complexes (Ln = Y, Gd and Dy): effect of ligands on the connection of inorganic subunits. Dalton Trans 2013; 42:1039-46. [DOI: 10.1039/c2dt31050c] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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61
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62
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Sameera WMC, Piñero DM, Herchel R, Sanakis Y, McGrady JE, Raptis RG, Zueva EM. A Combined Experimental and Computational Study of the Magnetic Superexchange within a Triangular (μ3-O)-Pyrazolato-FeIII3 Complex. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200206] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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63
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Mason K, Chang J, Prescimone A, Garlatti E, Carretta S, Tasker PA, Brechin EK. Linking [M(III)3] triangles with "double-headed" phenolic oximes. Dalton Trans 2012; 41:8777-85. [PMID: 22488421 DOI: 10.1039/c2dt30189j] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Strapping two salicylaldoxime units together with aliphatic α,Ω-aminomethyl links in the 3-position gives ligands which allow the assembly of the polynuclear complexes [Fe(7)O(2)(OH)(6)(H(2)L1)(3)(py)(6)](BF(4))(5)·6H(2)O·14MeOH (1·6H(2)O·14MeOH), [Fe(6)O(OH)(7)(H(2)L2)(3)](BF(4))(3)·4H(2)O·9MeOH (2·4H(2)O·9MeOH) and [Mn(6)O(2)(OH)(2)(H(2)L1)(3)(py)(4)(MeCN)(2)](BF(4))(5)(NO(3))·3MeCN·H(2)O·5py (3·3MeCN·H(2)O·5py). In each case the metallic skeleton of the cluster is based on a trigonal prism in which two [M(III)(3)O] triangles are tethered together via three helically twisted double-headed oximes. The latter are present as H(2)L(2-) in which the oximic and phenolic O-atoms are deprotonated and the amino N-atoms protonated, with the oxime moieties bridging across the edges of the metal triangles. Both the identity of the metal ion and the length of the straps connecting the salicylaldoxime units have a major impact on the nuclearity and topology of the resultant cluster, with, perhaps counter-intuitively, the longer straps producing the "smallest" molecules.
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Affiliation(s)
- Kevin Mason
- EaStCHEM School of Chemistry, The University of Edinburgh, West Mains Road, Edinburgh, EH9 3JJ, UK
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64
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Fischer S, Demeshko S, Dechert S, Meyer F. A Pyrazole-Expanded EDTA Ligand and its Pentanuclear Iron(III) Complex. Z Anorg Allg Chem 2012. [DOI: 10.1002/zaac.201100534] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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65
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Dong X, Zhang Y, Liu B, Zhen Y, Hu H, Xue G. Double Sandwich Polyoxometalate and Its Fe(III) Substituted Derivative, [As2Fe5Mo21O82]17– and [As2Fe6Mo20O80(H2O)2]16–. Inorg Chem 2012; 51:2318-24. [DOI: 10.1021/ic202314g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Xiangqian Dong
- Key Laboratory
of Synthetic and Natural Functional
Molecule Chemistry (Ministry of Education), Department of Chemistry, Northwest University, Xìan, 710069, China
| | - Yanping Zhang
- Key Laboratory
of Synthetic and Natural Functional
Molecule Chemistry (Ministry of Education), Department of Chemistry, Northwest University, Xìan, 710069, China
| | - Bin Liu
- Key Laboratory
of Synthetic and Natural Functional
Molecule Chemistry (Ministry of Education), Department of Chemistry, Northwest University, Xìan, 710069, China
| | - Yanzhong Zhen
- Key Laboratory
of Synthetic and Natural Functional
Molecule Chemistry (Ministry of Education), Department of Chemistry, Northwest University, Xìan, 710069, China
| | - Huaiming Hu
- Key Laboratory
of Synthetic and Natural Functional
Molecule Chemistry (Ministry of Education), Department of Chemistry, Northwest University, Xìan, 710069, China
| | - Ganglin Xue
- Key Laboratory
of Synthetic and Natural Functional
Molecule Chemistry (Ministry of Education), Department of Chemistry, Northwest University, Xìan, 710069, China
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66
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Kizas CM, Manos MJ, Nastopoulos V, Boudalis AK, Sanakis Y, Tasiopoulos AJ. Pentanuclear complexes with unusual structural topologies from the initial use of two aliphatic amino-alcoholligands in Fe chemistry. Dalton Trans 2012; 41:1544-52. [DOI: 10.1039/c1dt11487e] [Citation(s) in RCA: 11] [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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67
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Piga F, Moro F, Krivokapic I, Blake AJ, Edge R, McInnes EJL, Evans DJ, McMaster J, Slageren JV. Magnetic properties of a novel family of ferrous cubanes. Chem Commun (Camb) 2012; 48:2430-2. [DOI: 10.1039/c2cc16853g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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68
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Stepwise acetylide ligand substitution for the assembly of ethynylbenzene-linked Co(III) complexes. Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2011.08.051] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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69
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Chygorin EN, Nesterova OV, Rusanova JA, Kokozay VN, Bon VV, Boča R, Ozarowski A. Novel Heterometallic Schiff Base Complexes Featuring Unusual Tetranuclear {CoIII2FeIII2(μ-O)6} and Octanuclear {CoIII4FeIII4(μ-O)14} Cores: Direct Synthesis, Crystal Structures, and Magnetic Properties. Inorg Chem 2011; 51:386-96. [PMID: 22129107 DOI: 10.1021/ic2017962] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Eduard N. Chygorin
- Department of Inorganic
Chemistry, National Taras Shevchenko University, Volodymyrska street 64, Kyiv 01601, Ukraine
| | - Oksana V. Nesterova
- Department of Inorganic
Chemistry, National Taras Shevchenko University, Volodymyrska street 64, Kyiv 01601, Ukraine
| | - Julia A. Rusanova
- Department of Inorganic
Chemistry, National Taras Shevchenko University, Volodymyrska street 64, Kyiv 01601, Ukraine
| | - Vladimir N. Kokozay
- Department of Inorganic
Chemistry, National Taras Shevchenko University, Volodymyrska street 64, Kyiv 01601, Ukraine
| | - Volodymyr V. Bon
- Department of Chemistry
of Complex Compounds, V. I. Vernadsky Institute of General
and Inorganic Chemistry, National Academy of Sciences of Ukraine, 32/34 Palladin Avenue, Kyiv 03680, Ukraine
| | - Roman Boča
- Department of Chemistry, FPV, University of SS Cyril and Methodius, Trnava, Slovakia
- Institute
of Inorganic Chemistry,
FCHPT, Slovak University of Technology,
Radlinskeho 9, 81237 Bratislava, Slovakia
| | - Andrew Ozarowski
- National High Magnetic Field Laboratory, Florida State University, 1800 E. Paul Dirac Drive,
Tallahassee, Florida 32310, United States
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70
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Zhao J, Han Q, Shi D, Chen L, Ma P, Wang J, Niu J. Synthesis, structure and magnetism of a S-shaped multi-iron substituted arsenotungstate containing a trivacant Keggin [B-α-AsVW9O34]9− and a hexavacant Keggin [α-AsVW6O26]11− fragments. J SOLID STATE CHEM 2011. [DOI: 10.1016/j.jssc.2011.08.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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71
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Guo YN, Chen XH, Xue S, Tang J. Modulating Magnetic Dynamics of Three Dy2 Complexes through Keto–Enol Tautomerism of the o-Vanillin Picolinoylhydrazone Ligand. Inorg Chem 2011; 50:9705-13. [PMID: 21902183 DOI: 10.1021/ic2014978] [Citation(s) in RCA: 170] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yun-Nan Guo
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
- Graduate School of the Chinese Academy of Sciences, Beijing 100039, People's Republic of China
| | - Xiao-Hua Chen
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, 350007, People's Republic of China
| | - Shufang Xue
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
- Graduate School of the Chinese Academy of Sciences, Beijing 100039, People's Republic of China
| | - Jinkui Tang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
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72
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Liu B, Li L, Zhang Y, Ma Y, Hu H, Xue G. Three Banana-Shaped Arsenomolybdates Encapsulating a Hexanuclear Transition-Metal Central Magnetic Cluster: [AsIII2FeIII5MMo22O85(H2O)]n− (M = Fe3+, n = 14; M = Ni2+ and Mn2+, n = 15). Inorg Chem 2011; 50:9172-7. [DOI: 10.1021/ic201418q] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bin Liu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry (Ministry of Education), Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Department of Chemistry, Northwest University, Xi’an 710069, China
| | - Lili Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry (Ministry of Education), Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Department of Chemistry, Northwest University, Xi’an 710069, China
| | - Yanping Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry (Ministry of Education), Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Department of Chemistry, Northwest University, Xi’an 710069, China
| | - Ying Ma
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry (Ministry of Education), Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Department of Chemistry, Northwest University, Xi’an 710069, China
| | - Huaiming Hu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry (Ministry of Education), Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Department of Chemistry, Northwest University, Xi’an 710069, China
| | - Ganglin Xue
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry (Ministry of Education), Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Department of Chemistry, Northwest University, Xi’an 710069, China
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73
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Weyhermüller T, Wagner R, Biswas B, Chaudhuri P. A non-linear (2,2,2) alkoxo-bridging in a FeIII4O6 core potentially relevant to iron-tunicates. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.01.107] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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74
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Arizaga L, Cerdá M, Faccio R, Mombrú A, Novak M, González R, Kremer C, Chiozzone R. Synthesis, crystal structures, electrochemical and magnetic properties of polynuclear {Fe4} and {Fe8Na4} carboxylate/picolinate clusters. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.02.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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75
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Ruipérez F, Aquilante F, Ugalde JM, Infante I. Complete vs Restricted Active Space Perturbation Theory Calculation of the Cr2 Potential Energy Surface. J Chem Theory Comput 2011; 7:1640-6. [PMID: 26596430 DOI: 10.1021/ct200048z] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
In this paper, we calculate the potential energy surface (PES) and the spectroscopic constants of the chromium dimer using the recently developed restricted active space second-order perturbation (RASPT2) method. This approach is benchmarked against available experimental measurements and the complete active space second-order perturbation theory (CASPT2), which is nowadays established as one of the most accurate theoretical models available. Dissociation energies, vibrational frequencies, and bond distances are computed at the RASPT2 level using several reference spaces. The major advantage of the RASPT2 method is that with a limited number of configuration state functions, it can reproduce well the equilibrium bond length and the vibrational frequency of the Cr dimer. On the other hand, the PES is well described only at short distances, while at large distances, it compares very poorly with the CASPT2. The dissociation energy is also ill-behaved, but its value can be largely improved using a simple workaround that we explain in the text. In the paper, we also address the effect of the Ionization Potential Electron Affinity (IPEA) shift (a parameter introduced in the zeroth-order Hamiltonian in the CASPT2 method to include the effect of two-electron terms) and show how its default value of 0.25 is not suitable for a proper description of the PES and of the spectroscopic parameters and must be changed to a more sound value of 0.45.
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Affiliation(s)
- Fernando Ruipérez
- Kimika Fakultatea, Euskal Herriko Unibertsitatea, and Donostia International Physics Center (DIPC), P. K. 1072, 20080 Donostia, Euskadi, Spain
| | - Francesco Aquilante
- Department of Physical Chemistry, University of Geneva Chemical Center , 30 Quai Ernest-Ansermet, CH-1211, Geneva, Switzerland
| | - Jesus M Ugalde
- Kimika Fakultatea, Euskal Herriko Unibertsitatea, and Donostia International Physics Center (DIPC), P. K. 1072, 20080 Donostia, Euskadi, Spain
| | - Ivan Infante
- Kimika Fakultatea, Euskal Herriko Unibertsitatea, and Donostia International Physics Center (DIPC), P. K. 1072, 20080 Donostia, Euskadi, Spain
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76
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Ako AM, Mereacre V, Lan Y, Anson CE, Powell AK. Combined Use of Magnetic Susceptibility Measurements and
57
Fe Mössbauer Spectroscopy To Determine the Magnetic Ground State of an Fe
III
16
Cluster. Chemistry 2011. [DOI: 10.5710.1002/chem.201003574] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Ayuk M. Ako
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstrasse 15, 76131 Karlsruhe (Germany), Fax: (+49) 721‐608‐8142
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Postfach 3640, 76021Karlsruhe (Germany)
| | - Valeriu Mereacre
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstrasse 15, 76131 Karlsruhe (Germany), Fax: (+49) 721‐608‐8142
| | - Yanhua Lan
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstrasse 15, 76131 Karlsruhe (Germany), Fax: (+49) 721‐608‐8142
| | - Christopher E. Anson
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstrasse 15, 76131 Karlsruhe (Germany), Fax: (+49) 721‐608‐8142
| | - Annie K. Powell
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstrasse 15, 76131 Karlsruhe (Germany), Fax: (+49) 721‐608‐8142
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Postfach 3640, 76021Karlsruhe (Germany)
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77
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Ako AM, Mereacre V, Lan Y, Anson CE, Powell AK. Combined Use of Magnetic Susceptibility Measurements and
57
Fe Mössbauer Spectroscopy To Determine the Magnetic Ground State of an Fe
III
16
Cluster. Chemistry 2011; 17:4366-70. [DOI: 10.1002/chem.201003574] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2010] [Indexed: 01/08/2023]
Affiliation(s)
- Ayuk M. Ako
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstrasse 15, 76131 Karlsruhe (Germany), Fax: (+49) 721‐608‐8142
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Postfach 3640, 76021Karlsruhe (Germany)
| | - Valeriu Mereacre
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstrasse 15, 76131 Karlsruhe (Germany), Fax: (+49) 721‐608‐8142
| | - Yanhua Lan
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstrasse 15, 76131 Karlsruhe (Germany), Fax: (+49) 721‐608‐8142
| | - Christopher E. Anson
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstrasse 15, 76131 Karlsruhe (Germany), Fax: (+49) 721‐608‐8142
| | - Annie K. Powell
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstrasse 15, 76131 Karlsruhe (Germany), Fax: (+49) 721‐608‐8142
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Postfach 3640, 76021Karlsruhe (Germany)
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78
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Baniodeh A, Hewitt IJ, Mereacre V, Lan Y, Novitchi G, Anson CE, Powell AK. Heterometallic 20-membered {Fe16Ln4} (Ln = Sm, Eu, Gd, Tb, Dy, Ho) metallo-ring aggregates. Dalton Trans 2011; 40:4080-6. [DOI: 10.1039/c0dt01742f] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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79
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Sañudo EC, Font-Bardia M, Solans X, Laye RH. Hexanuclear Fe(iii) complexes and their thermal decomposition into an undecanuclear species. NEW J CHEM 2011. [DOI: 10.1039/c0nj00621a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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80
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Baca SG, Filippova IG, Keene TD, Botezat O, Malaestean IL, Stoeckli-Evans H, Kravtsov VC, Chumacov I, Liu SX, Decurtins S. Iron(III)-Pivalate-Based Complexes with Tetranuclear {Fe4(μ3-O)2}8+ Cores and N-Donor Ligands: Formation of Cluster and Polymeric Architectures. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000838] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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81
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Murugavel R, Gogoi N, Howlader R, Clérac R. A hexanuclear iron(III) complex [Fe6O2(OH)2(PhCOO)10(hedmp)2]·3CH3CN assembled from 2-hydroxyethyl-3,5-dimethyl pyrazole. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2010.03.034] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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82
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Ke H, Gamez P, Zhao L, Xu GF, Xue S, Tang J. Magnetic Properties of Dysprosium Cubanes Dictated by the M−O−M Angles of the [Dy4(μ3-OH)4] Core. Inorg Chem 2010; 49:7549-57. [DOI: 10.1021/ic101057e] [Citation(s) in RCA: 112] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hongshan Ke
- Contribution from State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P.R. China
- Graduate School of the Chinese Academy of Sciences, Beijing, 100039, P.R. China
| | - Patrick Gamez
- Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University, PO Box 9502, 2300 RA Leiden, The Netherlands, and ICREA, Departament de Química Inorgànica, Universitat de Barcelona, Spain
| | - Lang Zhao
- Contribution from State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P.R. China
| | - Gong-Feng Xu
- Contribution from State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P.R. China
| | - Shufang Xue
- Contribution from State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P.R. China
- Graduate School of the Chinese Academy of Sciences, Beijing, 100039, P.R. China
| | - Jinkui Tang
- Contribution from State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P.R. China
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83
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Schlegel C, Burzurí E, Luis F, Moro F, Manoli M, Brechin E, Murrie M, van Slageren J. Magnetic Properties of Two New Fe4Single-Molecule Magnets in the Solid State and in Frozen Solution. Chemistry 2010; 16:10178-85. [DOI: 10.1002/chem.200903505] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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84
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Plaul D, Spielberg E, Plass W. 2,6-Bis(pyrazol-3-yl)pyridine as Meridional Capping Ligand: Synthesis, Characterization, and Crystal Structure of the First Corresponding Hexanuclear Iron(III) Complex. Z Anorg Allg Chem 2010. [DOI: 10.1002/zaac.201000075] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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85
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Miao YL, Liu JL, Lin ZJ, Ou YC, Leng JD, Tong ML. Synthesis, structures, adsorption behaviour and magnetic properties of a new family of polynuclear iron clusters. Dalton Trans 2010; 39:4893-902. [DOI: 10.1039/c000126k] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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86
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Nayak S, Roubeau O, Teat SJ, Beavers CM, Gamez P, Reedijk J. An S-Shaped [Fe4Dy2] Complex Exhibiting Slow Relaxation of Magnetization: Synthesis, Magnetism, and Crystal Structures of a Family of [Fe4Ln2][Ln] Coordination Compounds (Ln = Nd, Gd, Tb, Dy, and Ho). Inorg Chem 2009; 49:216-21. [DOI: 10.1021/ic901781a] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sanjit Nayak
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Olivier Roubeau
- Instituto de Ciencia de Materiales de Aragón, CSIC and Universidad de Zaragoza, Plaza San Francisco, s/n 50009 Zaragoza, Spain
| | - Simon J. Teat
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720
| | - Christine M. Beavers
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720
| | - Patrick Gamez
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Jan Reedijk
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
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87
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88
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Stamatatos TC, Foguet-Albiol D, Poole KM, Wernsdorfer W, Abboud KA, O’Brien TA, Christou G. Spin Maximization from S = 11 to S = 16 in Mn7 Disk-Like Clusters: Spin Frustration Effects and Their Computational Rationalization. Inorg Chem 2009; 48:9831-45. [DOI: 10.1021/ic901393m] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Dolos Foguet-Albiol
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200
| | - Katye M. Poole
- Department of Chemistry and Chemical Biology, Indiana University-Purdue University Indianapolis, Indianapolis, Indiana 46202-3274
| | - Wolfgang Wernsdorfer
- Institut Néel, CNRS and Université J. Fournier, BP 166, 38042 Grenoble Cedex 9, France
| | - Khalil A. Abboud
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200
| | - Ted A. O’Brien
- Department of Chemistry and Chemical Biology, Indiana University-Purdue University Indianapolis, Indianapolis, Indiana 46202-3274
| | - George Christou
- Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200
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89
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Nocton G, Horeglad P, Pécaut J, Mazzanti M. Polynuclear cation-cation complexes of pentavalent uranyl: relating stability and magnetic properties to structure. J Am Chem Soc 2009; 130:16633-45. [PMID: 19049459 DOI: 10.1021/ja804766r] [Citation(s) in RCA: 151] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Reaction of {[UO2Pys][mu-KI2Py2]}n (1) with 2 equiv of potassium dibenzoylmethanate (Kdbm) in pyridine or acetonitrile affords, respectively, the corresponding tetranuclear complexes of pentavalent uranyl ([UO2(dbm),2]2[mu-K(Py)2]2[mu8-K(Py)]}2I2 x Py2 (2) (in 70% yield) and {[UO2(dbm)2]2[mu-K(MeCN)2][mu8-K]}2 (3) (in 40% yield) in which four UO2+ are mutually coordinated (T-shaped "cation-cation" interaction). The X-ray structures of 2 and 3 show also the presence of, respectively, six and four potassium cations involved in UO2+...K+ interactions. Reaction of 2 with an excess of 18-crown-6 (18C6) affords the dimeric complex [UO2(dbm)2K(18C6)]2 (4) presenting a diamond-shaped interaction between two UO2+ groups, in 45% yield. 1H and PFGSTE diffusion NMR spectroscopy of 2 and 3 in pyridine show unambiguously the presence of UO2+...UO2+ and UO2+...K+ interactions (tetrametallic species) in solution, which leads to a rapid (7 days) disproportionation of pentavalent uranyl to afford [U(dbm)4] and [UO2(dbm)2] species. The UO2+...K+ interaction plays an important synergistic role in the stabilization of the UO2+...UO2+ interactions. Accordingly, the lower affinity of (K(18C6))+ for the uranyl(V) oxygen in complex 4 results in a lower number of coordinated K+ and therefore in a weakened UP2+...UO2+ interaction. The UO24+...UO2+ interactions is completely disrupted in dmso or in the presence of Kdbm, preventing disproportionation of pentavalent uranyl. Solid-state variable-temperature magnetic susceptibility studies showed the unambiguous presence of antiferromagnetic coupling between the two oxo-bridged uranium centers of complex 4, with the appearance of a maximum in chi versus T at approximately 5 K. The different behavior of the tetrameric complex 3, which probably involves a magnetic coupling occurring at lower temperature, can be ascribed to the different geometric arrangement of the interacting uranyl(V) groups.
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Affiliation(s)
- Grégory Nocton
- Laboratoire de Reconnaissance Ionique et Chimie de Coordination, Service de Chimie Inorganique et Biologique (UMR-E 3 CEA-UJF), INAC, CEA-Grenoble, 38054 Grenoble Cedex 09, France
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90
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Stamatatos TC, Efthymiou CG, Stoumpos CC, Perlepes SP. Adventures in the Coordination Chemistry of Di‐2‐pyridyl Ketone and Related Ligands: From High‐Spin Molecules and Single‐Molecule Magnets to Coordination Polymers, and from Structural Aesthetics to an Exciting New Reactivity Chemistry of Coordinated Ligands. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900223] [Citation(s) in RCA: 103] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | | | | | - Spyros P. Perlepes
- Department of Chemistry, University of Patras, 26504 Patras, Greece, Fax: +30‐2610‐997118
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91
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Mulyana Y, Nafady A, Mukherjee A, Bircher R, Moubaraki B, Murray KS, Bond AM, Abrahams BF, Boskovic C. New Family of Ferric Spin Clusters Incorporating Redox-Active ortho-Dioxolene Ligands. Inorg Chem 2009; 48:7765-81. [DOI: 10.1021/ic900729d] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yanyan Mulyana
- School of Chemistry, University of Melbourne, Victoria, 3010, Australia
| | - Ayman Nafady
- School of Chemistry, Monash University, Clayton, Victoria, 3800, Australia
| | - Arindam Mukherjee
- School of Chemistry, University of Melbourne, Victoria, 3010, Australia
| | - Roland Bircher
- Bragg Institute, The Australian Nuclear Science and Technology Organisation, PMB 1, Menai, New South Wales 2234, Australia
| | - Boujemaa Moubaraki
- School of Chemistry, Monash University, Clayton, Victoria, 3800, Australia
| | - Keith S. Murray
- School of Chemistry, Monash University, Clayton, Victoria, 3800, Australia
| | - Alan M. Bond
- School of Chemistry, Monash University, Clayton, Victoria, 3800, Australia
| | | | - Colette Boskovic
- School of Chemistry, University of Melbourne, Victoria, 3010, Australia
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92
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Wang GM, Wei RJ, Hu LL, Sun XJ, Huang RB, Zheng LS, Tao J. Synthesis and magnetic properties of a new hexanuclear iron(III) compound. INORG CHEM COMMUN 2009. [DOI: 10.1016/j.inoche.2009.05.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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93
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Hoshino N, Ako AM, Powell AK, Oshio H. Molecular magnets containing wheel motifs. Inorg Chem 2009; 48:3396-407. [PMID: 19361241 DOI: 10.1021/ic801776w] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An overview of some compounds with structures that can be regarded as derived from an {Fe(7)(mu(3)-OR)(6)(mu-OR)(6)} motif is presented. Many of these compounds act as single-molecule magnets. In addition, the results of a comprehensive study on the single-crystal structures, magnetism, and spin structures for five new iron compounds with structural components related to this are given. This serves to illustrate the methodology that can be used to unravel the complicated magnetic behavior of such systems. Thus, the alkoxo- and phenoxo-bridged multinuclear iron complexes, [Fe(II)(7)(Hbmsae)(6)(OMe)(6)]Cl(2) x 6 H(2)O (6), [Fe(II)Fe(III)(6)(bmsae)(6)(mu(3)-OMe)(6)]Cl(2) x 23 H(2)O (7), [NaFe(III)(6)(bmsae)(6)(mu(3)-OMe)(6)]Cl x 30 H(2)O (8), [Fe(III)(3)(bmsae)(3)Cl(2)(MeOH)(OMe)] x MeOH x Et(2)O (9), and [Fe(III)(2)(Hbmsae)(2)(OMe)(2)Cl(2)][Fe(3)(bmsae)(3)(OMe)Cl(2)(MeOH)](2) x 1.5 MeOH (10), were prepared by the reactions of iron sources with Schiff base ligands (H(2)bmsae = 5-bromo-3-methoxysalicylideneaminoethanol). Heptanuclear complexes of 6 and 7 have wheel structures in which six iron(II) and six iron(III) ions locate on the rim with the central iron(II) ions, respectively, while 8 also has a wheel structure with a diamagnetic sodium ion in the center. 9 is a trinuclear ferric complex with an incomplete cubic structure. In 10, di- and trinuclear complexes exist in the crystal, where the trinuclear complex has an incomplete cubic structure similar to that of 9. Magnetic susceptibility measurements revealed that 6 has an S = 10 spin ground state, while the antiferromagnetic interactions dominate in 7-10.
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Affiliation(s)
- Norihisa Hoshino
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba 305-8571, Japan
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94
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Li B, Zhao JW, Zheng ST, Yang GY. A banana-shaped iron(III)-substituted tungstogermanate containing two types of lacunary polyoxometalate units. INORG CHEM COMMUN 2009. [DOI: 10.1016/j.inoche.2008.11.011] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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95
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O'Brien TA, Jones CM. Comparison of Semiempirical ZILSH and DFT Calculations of Exchange Constants in Fe4 Butterfly Complexes. J Chem Theory Comput 2009; 5:68-79. [PMID: 26609821 DOI: 10.1021/ct700208m] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Magnetic interactions in a series of tetranuclear Fe(3+) complexes with the butterfly core structure have been studied with semiempirical ZILSH and density functional theory (DFT) calculations (B3LYP functional). A theoretical analysis of a previously used method of estimating exchange constants from a restricted number of spin configurations reveals systematic errors arising from asymmetry in the complexes, which cause large variations in results with different choices of spin configurations. Correction factors are derived that yield the correct results obtained from full configuration space (FCS) calculations. Exchange constants obtained from DFT FCS calculations for the "body-body" interaction were large and ferromagnetic, in disagreement with values obtained from empirical fits of magnetic susceptibility data for the complexes, established magnetostructural correlations in polynuclear Fe(3+) complexes, and ZILSH calculations. DFT calculations also gave unreasonably large antiferromagnetic exchange constants for interaction between "wingtip" ions that are not directly bridged, again in disagreement with ZILSH calculations. Estimates of exchange constants for interaction of body and wingtip ions obtained with ZILSH and DFT were similar, with the ZILSH values in slightly better agreement with empirical fits. Considering all interactions, the ZILSH method provides results in better accord with experiment than DFT for these complexes. Additional comparisons of exchange constants obtained with different spin coupling schemes showed that values appropriate for two-center spin eigenfunctions gave consistently better results than values calculated with the local spin operator. The effect of basis set was found to be very small. A brief analysis of these findings is given.
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Affiliation(s)
- Ted A O'Brien
- Department of Chemistry and Chemical Biology, Indiana University-Purdue University Indianapolis, 402 North Blackford Street, Indianapolis, Indiana 46202
| | - Candace M Jones
- Department of Chemistry and Chemical Biology, Indiana University-Purdue University Indianapolis, 402 North Blackford Street, Indianapolis, Indiana 46202
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96
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Khanra S, Helliwell M, Tuna F, McInnes EJL, Winpenny REP. Synthesis, structural characterisation and magnetic studies of polymetallic iron phosphonate cages. Dalton Trans 2009:6166-74. [DOI: 10.1039/b903600h] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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97
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Isilak S, Mereacre V, Lan Y, Anson CE, Powell AK. A Three-Dimensional Hydrogen-Bonded Network of Triiron(III) and Dilanthanum(III) Pivalate Complexes. Aust J Chem 2009. [DOI: 10.1071/ch09176] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A cationic tri-nuclear iron(iii) complex and an anionic di-nuclear lanthanum(iii) complex assemble to form a three-dimensional hydrogen-bonded supramolecular 3d-4f network [Fe3(μ3-O)(μ-O2CtBu)6(im)3]2[La2(μ-O2CtBu)4(η-O2CtBu)4]·2C2H5OH (im = imidazole).
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98
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Synthesis, structural, magnetic and high frequency EPR studies on a hexametallic Fe(III) complex with a highly rhombic S=5 ground state. Inorganica Chim Acta 2008. [DOI: 10.1016/j.ica.2008.03.081] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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99
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Alborés P, Rentschler E. A T-Shaped μ3-Oxido Trinuclear Iron Cluster with High Easy-Plane Anisotropy: Structural and Magnetic Characterization. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200800327] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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100
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