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Börner M, Klose J, Gutierrez Suburu ME, Strassert CA, Yang F, Monakhov KY, Abel B, Kersting B. Synthesis and Characterisation of Luminescent [Cr III 2 L(μ-carboxylato)] 3+ Complexes with High-Spin S=3 Ground States (L=N 6 S 2 donor ligand). Chemistry 2021; 27:14899-14910. [PMID: 34490947 PMCID: PMC8596867 DOI: 10.1002/chem.202102079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Indexed: 01/02/2023]
Abstract
The synthesis, structure, magnetic, and photophysical properties of two dinuclear, luminescent, mixed-ligand [CrIII 2 L(O2 CR)]3+ complexes (R=CH3 (1), Ph (2)) of a 24-membered binucleating hexa-aza-dithiophenolate macrocycle (L)2- are presented. X-ray crystallographic analysis reveals an edge-sharing bioctahedral N3 Cr(μ-SR)2 (μ1,3 -O2 CR)CrN3 core structure with μ1,3 -bridging carboxylate groups. A ferromagnetic superexchange interaction between the electron spins of the Cr3+ ions leads to a high-spin (S=3) ground state. The coupling constants (J=+24.2(1) cm-1 (1), +34.8(4) cm-1 (2), H=-2JS1 S2 ) are significantly larger than in related bis-μ-alkoxido-μ-carboxylato structures. DFT calculations performed on both complexes reproduce both the sign and strength of the exchange interactions found experimentally. Frozen methanol-dichloromethane 1 : 1 solutions of 1 and 2 luminesce at 750 nm when excited into the 4 LMCT state on the 4 A2 → 2 T1 (ν2 ) bands (λexc =405 nm). The absolute quantum yields (ΦL ) for 1 and 2 were found to be strongly temperature dependent. At 77 K in frozen MeOH/CH2 Cl2 glasses, ΦL =0.44±0.02 (for 1), ΦL =0.45±0.02 (for 2).
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Affiliation(s)
- Martin Börner
- Institut für Anorganische ChemieUniversität LeipzigJohannisallee 2904103LeipzigGermany
- Leibniz Institut für OberflächenmodifizierungPermoserstraße 1504318LeipzigGermany
| | - Jennifer Klose
- Institut für Anorganische ChemieUniversität LeipzigJohannisallee 2904103LeipzigGermany
| | - Matias E. Gutierrez Suburu
- Institut für Anorganische und Analytische ChemieCiMICSoNWestfälische Wilhelms-Universität MünsterCorrensstraße 28/3048149MünsterGermany
- CeNTechWestfälische Wilhelms-Universität MünsterHeisenbergstraße 1148149MünsterGermany
| | - Cristian A. Strassert
- Institut für Anorganische und Analytische ChemieCiMICSoNWestfälische Wilhelms-Universität MünsterCorrensstraße 28/3048149MünsterGermany
- CeNTechWestfälische Wilhelms-Universität MünsterHeisenbergstraße 1148149MünsterGermany
| | - Fangshun Yang
- Leibniz Institut für OberflächenmodifizierungPermoserstraße 1504318LeipzigGermany
| | - Kirill Yu. Monakhov
- Leibniz Institut für OberflächenmodifizierungPermoserstraße 1504318LeipzigGermany
| | - Bernd Abel
- Leibniz Institut für OberflächenmodifizierungPermoserstraße 1504318LeipzigGermany
- Wilhelm-Ostwald-Institut für Physikalische und Theoretische ChemieUniversität LeipzigLinnéstrasse 204103LeipzigGermany
| | - Berthold Kersting
- Institut für Anorganische ChemieUniversität LeipzigJohannisallee 2904103LeipzigGermany
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Das A, Ganguly T, Majumdar A. Thiolate Coordination vs C-S Bond Cleavage of Thiolates in Dinickel(II) Complexes. Inorg Chem 2021; 60:944-958. [PMID: 33405907 DOI: 10.1021/acs.inorgchem.0c03068] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A detailed study for the synthesis of dinickel(II)-thiolate and dinickel(II)-hydrosulfide complexes and the complete characterization of the relevant intermediates involved in the C-S bond cleavage of thiolates are presented. Hydrated Ni(II) salts mediate the hydrolytic C-S bond cleavage of thiolates (NaSR/RSH; R = Me, Et, nBu, tBu), albeit inefficiently, to yield a mixture of a dinickel(II)-hydrosulfide complex, [Ni2(BPMP)(μ-SH)(DMF)2]2+ (1), and the corresponding dinickel(II)-thiolate complexes, such as [Ni2(BPMP)(μ-SEt)(ClO4)]1+ (2) (HBPMP is 2,6-bis[[bis(2-pyridylmethyl)amino]methyl]-4-methylphenol). A systematic study for the reactivity of thiolates with Ni(II) was therefore pursued which finally yielded 1 as a pure product which has been characterized in comparison with the dinickel(II)-dichloride complex, [Ni2(BPMP)(Cl)2(MeOH)2]1+ (3). While the reaction of thiolates with anhydrous Ni(OTf)2 in dry conditions could only yield [Ni2(BPMP)(OTf)2]1+ (5) instead of the expected dinickel(II)-thiolate compound, the C-S bond cleavage could be suppressed by the use of a chelating thiol, such as PhCOSH, to yield [Ni2(BPMP)(SCOPh)2]1+ (6). Finally, with the suitable choice of a monodentate thiol, a dinickel(II)-monothiolate complex, [Ni2(BPMP)(SPh)(DMF)(MeOH)(H2O)]2+ (7), was isolated as a pure product within 1 h of reaction, which after a longer time of reaction yielded 1 and PhOH. Complex 7 may thus be regarded as the intermediate that precedes the C-S bond cleavage and is generated by the reaction of a thiolate with an initially formed dinickel(II)-solvento complex, [Ni2(BPMP)(MeOH)2(H2O)2]3+(4). Selected dinickel(II) complexes were explored further for the scope of substitution reactions, and the results include the isolation of a dinickel(II)-bis(thiolate) complex, [Ni2(BPMP)(μ-SPh)2]1+ (8).
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Affiliation(s)
- Ayan Das
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India
| | - Tuhin Ganguly
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India
| | - Amit Majumdar
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India
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Pluth MD, Tonzetich ZJ. Hydrosulfide complexes of the transition elements: diverse roles in bioinorganic, cluster, coordination, and organometallic chemistry. Chem Soc Rev 2020; 49:4070-4134. [DOI: 10.1039/c9cs00570f] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Molecules containing transition metal hydrosulfide linkages are diverse, spanning a variety of elements, coordination environments, and redox states, and carrying out multiple roles across several fields of chemistry.
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Affiliation(s)
- Michael D. Pluth
- Department of Chemistry and Biochemistry
- Materials Science Institute
- Knight Campus for Accelerating Scientific Impact
- Institute of Molecular Biology
- University of Oregon
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4
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Börner M, Blömer L, Kischel M, Richter P, Salvan G, Zahn DRT, Siles PF, Fuentes MEN, Bufon CCB, Grimm D, Schmidt OG, Breite D, Abel B, Kersting B. Deposition of exchange-coupled dinickel complexes on gold substrates utilizing ambidentate mercapto-carboxylato ligands. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2017; 8:1375-1387. [PMID: 28900593 PMCID: PMC5530607 DOI: 10.3762/bjnano.8.139] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 06/07/2017] [Indexed: 06/07/2023]
Abstract
The chemisorption of magnetically bistable transition metal complexes on planar surfaces has recently attracted increased scientific interest due to its potential application in various fields, including molecular spintronics. In this work, the synthesis of mixed-ligand complexes of the type [NiII2L(L')](ClO4), where L represents a 24-membered macrocyclic hexaazadithiophenolate ligand and L' is a ω-mercapto-carboxylato ligand (L' = HS(CH2)5CO2- (6), HS(CH2)10CO2- (7), or HS(C6H4)2CO2- (8)), and their ability to adsorb on gold surfaces is reported. Besides elemental analysis, IR spectroscopy, electrospray ionization mass spectrometry (ESIMS), UV-vis spectroscopy, and X-ray crystallography (for 6 and 7), the compounds were also studied by temperature-dependent magnetic susceptibility measurements (for 7 and 8) and (broken symmetry) density functional theory (DFT) calculations. An S = 2 ground state is demonstrated by temperature-dependent susceptibility and magnetization measurements, achieved by ferromagnetic coupling between the spins of the Ni(II) ions in 7 (J = +22.3 cm-1) and 8 (J = +20.8 cm-1; H = -2JS1S2). The reactivity of complexes 6-8 is reminiscent of that of pure thiolato ligands, which readily chemisorb on Au surfaces as verified by contact angle, atomic force microscopy (AFM) and spectroscopic ellipsometry measurements. The large [Ni2L] tail groups, however, prevent the packing and self-assembly of the hydrocarbon chains. The smaller film thickness of 7 is attributed to the specific coordination mode of the coligand. Results of preliminary transport measurements utilizing rolled-up devices are also reported.
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Affiliation(s)
- Martin Börner
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany
| | - Laura Blömer
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany
| | - Marcus Kischel
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany
| | - Peter Richter
- Semiconductor Physics, Chemnitz University of Technology, D-09107 Chemnitz, Germany
| | - Georgeta Salvan
- Semiconductor Physics, Chemnitz University of Technology, D-09107 Chemnitz, Germany
| | - Dietrich R T Zahn
- Semiconductor Physics, Chemnitz University of Technology, D-09107 Chemnitz, Germany
| | - Pablo F Siles
- Material Systems for Nanoelectronics, Chemnitz University of Technology, Reichenhainer Str. 70, 09107 Chemnitz, Germany
- Institute for Integrative Nanosciences, IFW Dresden, Helmholtz Str. 20, 01069 Dresden, Germany
| | - Maria E N Fuentes
- Institute for Integrative Nanosciences, IFW Dresden, Helmholtz Str. 20, 01069 Dresden, Germany
| | - Carlos C B Bufon
- Institute for Integrative Nanosciences, IFW Dresden, Helmholtz Str. 20, 01069 Dresden, Germany
| | - Daniel Grimm
- Institute for Integrative Nanosciences, IFW Dresden, Helmholtz Str. 20, 01069 Dresden, Germany
| | - Oliver G Schmidt
- Institute for Integrative Nanosciences, IFW Dresden, Helmholtz Str. 20, 01069 Dresden, Germany
| | - Daniel Breite
- Leibniz-Institute of Surface Modification (IOM), Permoser Str. 15, D-04318 Leipzig, Germany
| | - Bernd Abel
- Leibniz-Institute of Surface Modification (IOM), Permoser Str. 15, D-04318 Leipzig, Germany
| | - Berthold Kersting
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany
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5
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Jeremies A, Lehmann U, Gruschinski S, Matulis V, Ivashkevich OA, Jäschke A, Kersting B. Synthesis, structure, electrochemistry, and magnetic properties of face-sharing bioctahedral nickel complexes containing a N 3 Ni( μ -S 2 )( μ -X)NiN 3 core (X = F − , Cl − , Br − , N 3 − , OH − ). J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.04.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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6
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Chakraborty U, Urban F, Mühldorf B, Rebreyend C, de Bruin B, van Velzen N, Harder S, Wolf R. Accessing the CpArNi(I) Synthon: Reactions with N-Heterocyclic Carbenes, TEMPO, Sulfur, and Selenium. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00084] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Uttam Chakraborty
- Institute
of Inorganic Chemistry, University of Regensburg, D-93040 Regensburg, Germany
| | - Franziska Urban
- Institute
of Inorganic Chemistry, University of Regensburg, D-93040 Regensburg, Germany
| | - Bernd Mühldorf
- Institute
of Inorganic Chemistry, University of Regensburg, D-93040 Regensburg, Germany
| | - Christophe Rebreyend
- Van’t
Hoff Institute for Molecular Sciences, University of Amsterdam, Science
Park 904, 1098 XH Amsterdam, The Netherlands
| | - Bas de Bruin
- Van’t
Hoff Institute for Molecular Sciences, University of Amsterdam, Science
Park 904, 1098 XH Amsterdam, The Netherlands
| | - Niels van Velzen
- Stratingh Institute for Chemistry Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Sjoerd Harder
- Stratingh Institute for Chemistry Nijenborgh 4, 9747 AG Groningen, The Netherlands
- Chair
of Inorganic and Organometallic Chemistry University of Erlangen-Nürnberg, D-91058 Erlangen, Germany
| | - Robert Wolf
- Institute
of Inorganic Chemistry, University of Regensburg, D-93040 Regensburg, Germany
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7
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Lach J, Jeremies A, Breite D, Abel B, Mahns B, Knupfer M, Matulis V, Ivashkevich OA, Kersting B. Encapsulation of the 4-Mercaptobenzoate Ligand by Macrocyclic Metal Complexes: Conversion of a Metallocavitand to a Metalloligand. Inorg Chem 2014; 53:10825-34. [DOI: 10.1021/ic500683f] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jochen Lach
- Institut für Anorganische Chemie, Universität Leipzig, D-04103 Leipzig, Germany
| | - Alexander Jeremies
- Institut für Anorganische Chemie, Universität Leipzig, D-04103 Leipzig, Germany
| | - Daniel Breite
- Chemische Abteilung, Leibniz Institut für Oberflächenmodifizierung eV, D-04318 Leipzig, Germany
| | - Bernd Abel
- Chemische Abteilung, Leibniz Institut für Oberflächenmodifizierung eV, D-04318 Leipzig, Germany
| | - Benjamin Mahns
- Leibniz Institute for Solid State and Materials
Research, IFW Dresden, D-01171 Dresden, Germany
| | - Martin Knupfer
- Leibniz Institute for Solid State and Materials
Research, IFW Dresden, D-01171 Dresden, Germany
| | - Vitaly Matulis
- Research Institute for Physical Chemical Problems of Belarusian State University, Leningradskaya 14, 220030 Minsk, Belarus
| | | | - Berthold Kersting
- Institut für Anorganische Chemie, Universität Leipzig, D-04103 Leipzig, Germany
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8
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Schnitter R, Gallego D, Kersting B. Selective complexation of α-amino acids and simple peptides via their carboxylate groups. Dalton Trans 2014; 43:13637-48. [DOI: 10.1039/c4dt02007c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Golecki M, Lach J, Jeremies A, Lungwitz F, Fronk M, Salvan G, Zahn DRT, Park J, Krupskaya Y, Kataev V, Klingeler R, Büchner B, Mahns B, Knupfer M, Siles PF, Grimm D, Schmidt OG, Reis A, Thiel WR, Breite D, Abel B, Kersting B. Chemisorption of exchange-coupled [Ni2L(dppba)]+ complexes on gold by using ambidentate 4-(diphenylphosphino)benzoate co-ligands. Chemistry 2013; 19:7787-801. [PMID: 23595564 DOI: 10.1002/chem.201300496] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Indexed: 11/09/2022]
Abstract
A new strategy for the fixation of redox-active dinickel(II) complexes with high-spin ground states to gold surfaces was developed. The dinickel(II) complex [Ni2L(Cl)]ClO4 (1ClO4), in which L(2-) represents a 24-membered macrocyclic hexaaza-dithiophenolate ligand, reacts with ambidentate 4-(diphenylphosphino)benzoate (dppba) to form the carboxylato-bridged complex [Ni2L(dppba)](+), which can be isolated as an air-stable perchlorate [Ni2L(dppba)]ClO4 (2ClO4) or tetraphenylborate [Ni2L(dppba)]BPh4 (2BPh4) salt. The auration of 2ClO4 was probed on a molecular level, by reaction with AuCl, which leads to the monoaurated Ni(II)2Au(I) complex [Ni(II)2L(dppba)Au(I)Cl]ClO4 (3ClO4). Metathesis of 3ClO4 with NaBPh4 produces [Ni(II)2L(dppba)Au(I)Ph]BPh4 (4BPh4), in which the Cl(-) is replaced by a Ph(-) group. The complexes were fully characterized by ESI mass spectrometry, IR and UV/Vis spectroscopy, X-ray crystallography (2BPh4 and 4BPh4), cyclic voltammetry, SQUID magnetometry and HF-ESR spectroscopy. Temperature-dependent magnetic susceptibility measurements reveal a ferromagnetic coupling J = +15.9 and +17.9 cm(-1) between the two Ni(II) ions in 2ClO4 and 4BPh4 (H = -2 JS1S2). HF-ESR measurements yield a negative axial magnetic anisotropy (D<0), which implies a bistable (easy axis) magnetic ground state. The binding of the [Ni2L(dppba)]ClO4 complex to gold was ascertained by four complementary surface analytical methods: contact angle measurements, atomic-force microscopy, X-ray photoelectron spectroscopy, and spectroscopic ellipsometry. The results indicate that the complexes are attached to the Au surface through coordinative Au-P bonds in a monolayer.
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Affiliation(s)
- Matthias Golecki
- Institut für Anorganische Chemie, Universität Leipzig, 04103 Leipzig, Germany
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10
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Lehmann U, Lach J, Loose C, Hahn T, Kersting B, Kortus J. Binuclear nickel complexes with an edge sharing bis(square-pyramidal) N3Ni(μ-S2)NiN3 core: synthesis, characterization, crystal structure and magnetic properties. Dalton Trans 2013; 42:987-96. [PMID: 23108013 DOI: 10.1039/c2dt31973j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of the novel macrocyclic octadentate amino-thiophenolate ligand H(2)L2 (3,7,11,19,23,27-hexaaza-33,34-dithiol-15,31-di(tert-butyl)-tricyclo[27,3,1(13.17)]-tetratriaconta-1(32),13,15,17(34),29,30-hexane) and its ability to support binuclear nickel(II) complexes with dithiolato-bridged square-pyramidal Ni(II) ions are reported. H(2)L2 is obtained as the hexahydrobromide salt from a Schiff-base condensation reaction between 1,2-bis(4-tert-butyl-2,6-diformylphenylthio)ethane and bis(3-aminopropyl)amine followed by two successive reductions with NaBH(4) and Na/NH(3). The ligand forms a green, paramagnetic, binuclear nickel(II) complex dication [Ni(II)(2)L2](2+), which can be isolated as a ClO(4)(-) (4) or BPh(4)(-) salt (5). The binuclear nickel(II) complex contains a central N(3)Ni(μ-S)(2)NiN(3) core with two square-pyramidal coordinated Ni(II) ions. The [Ni(2)L2](2+) dication does not bind further coligands, in striking contrast to the behaviour of the parent [Ni(2)L1](2+) dication supported by the smaller (L1)(2-) macrocycle (containing diethylenetriamine in place of the dipropylenetriamine units) which readily binds a variety of other coligands (L') to form bisoctahedral [Ni(2)L1(L')](+) structures. The unusual behaviour of 4 relates to two different N configurations which leads to a steric shielding of the third bridging position by the CH(2)-groups of the dipropylenetriamine chains. An analysis of the temperature-dependent magnetic susceptibility data of 5 reveals the presence of a weak antiferromagnetic exchange interaction between the spins of the nickel(II) ions with a value for the magnetic exchange coupling constant J of -23.5 cm(-1) (H = -2JS(1)S(2)). These results are further substantiated by DFT calculations.
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Affiliation(s)
- Ulrike Lehmann
- Universität Leipzig, Institut für Anorganische Chemie, Johannisallee 29, 04103 Leipzig, Germany
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11
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Tetranuclear complexes composed of dinickel(II) macrocyclic fragments bridged by 5,5′-(1,3-phenylene)bis-1H-tetrazolato and N,N-bis(tetrazol-5-ato)amine coligands: Synthesis, structures and magnetic properties. Polyhedron 2013. [DOI: 10.1016/j.poly.2012.09.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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12
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Vigato P, Peruzzo V, Tamburini S. Acyclic and cyclic compartmental ligands: Recent results and perspectives. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.01.009] [Citation(s) in RCA: 167] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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13
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Lozan V, Lach J, Kersting B. Synthesis, Structure, and Reactivity of Dinuclear Nickel Amino-Thiophenolate Complexes Bearing Bridging VO2(OH)2–and VO2(OR)2– Coligands. Inorg Chem 2012; 51:5213-23. [DOI: 10.1021/ic300085f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vasile Lozan
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, D-04103
Leipzig, Germany
| | - Jochen Lach
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, D-04103
Leipzig, Germany
| | - Berthold Kersting
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, D-04103
Leipzig, Germany
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14
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Käss S, Kersting B. Macrocyclic [M2L(μ-L′)]+ Complexes (M = NiII, ZnII; L′ = Cl- or RCO2-) Incorporating Thiophenolate and Phenylsulfonate Donor Units: Preparation, Reactivity, Structure, and Stability. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200036] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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15
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16
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Lehmann U, Klingele J, Lozan V, Steinfeld G, Klingele MH, Käss S, Rodenstein A, Kersting B. Dependence of the Chemical Properties of Macrocyclic [NiII2L(μ-O2CR)]+Complexes on the Basicity of the Carboxylato Coligands (L2−= macrocyclic N6S2ligand). Inorg Chem 2010; 49:11018-29. [DOI: 10.1021/ic101574a] [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)
- Ulrike Lehmann
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
| | - Julia Klingele
- Institut für Anorganische und Analytische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstr. 21, D-79104 Freiburg, Germany
| | - Vasile Lozan
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
| | - Gunther Steinfeld
- Institut für Anorganische und Analytische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstr. 21, D-79104 Freiburg, Germany
| | - Marco H. Klingele
- Institut für Anorganische und Analytische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstr. 21, D-79104 Freiburg, Germany
| | - Steffen Käss
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
| | - Axel Rodenstein
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
| | - Berthold Kersting
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
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17
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Voitekhovich SV, Syre R, Lach J, Matulis VE, Gaponik PN, Ivashkevich OA, Kersting B. A Novel N(3),N(4)-Bridging Coordination Mode of 1-R-Tetrazole-5-thiolates - Synthesis, X-ray Diffraction, Magnetic Properties and Quantum-Chemical Study of a Macrocyclic Dinickel Complex Coligated by 1-Methyltetrazole-5-thiolate. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000735] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sergei V. Voitekhovich
- Research Institute for Physical Chemical Problems, Belarusian State University, Leningradskaya 14, 220030 Minsk, Belarus
| | - Ronny Syre
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany, Fax: +49‐341‐9736199
| | - Jochen Lach
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany, Fax: +49‐341‐9736199
| | - Vadim E. Matulis
- Research Institute for Physical Chemical Problems, Belarusian State University, Leningradskaya 14, 220030 Minsk, Belarus
| | - Pavel N. Gaponik
- Research Institute for Physical Chemical Problems, Belarusian State University, Leningradskaya 14, 220030 Minsk, Belarus
| | - Oleg A. Ivashkevich
- Research Institute for Physical Chemical Problems, Belarusian State University, Leningradskaya 14, 220030 Minsk, Belarus
| | - Berthold Kersting
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany, Fax: +49‐341‐9736199
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Lach J, Voitekhovich S, Lozan V, Gaponik P, Ivashkevich O, Lincke J, Lässig D, Kersting B. Magnetic Properties of Mixed Ligand NiII2 and NiII4 Complexes Composed of Macrocyclic Hexaamine-Dithiophenolato and Bridging Tetrazolato Ligands. Z Anorg Allg Chem 2010. [DOI: 10.1002/zaac.201000087] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Krupskaya Y, Alfonsov A, Parameswaran A, Kataev V, Klingeler R, Steinfeld G, Beyer N, Gressenbuch M, Kersting B, Büchner B. Interplay of magnetic exchange interactions and Ni-S-Ni bond angles in polynuclear nickel(II) complexes. Chemphyschem 2010; 11:1961-70. [PMID: 20408157 DOI: 10.1002/cphc.200900935] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The ability of bridging thiophenolate groups (RS(-)) to transmit magnetic exchange interactions between paramagnetic Ni(II) ions is examined. Specific attention is paid to complexes with large Ni-SR-Ni angles. For this purpose, dinuclear [Ni(2)L(1)(mu-OAc)I(2)][I(5)] (2) and trinuclear [Ni(3)L(2)(OAc)(2)][BPh(4)](2) (3), where H(2)L(1) and H(2)L(2) represent 24-membered macrocyclic amino-thiophenol ligands, are prepared and fully characterized by IR- and UV/Vis spectroscopy, X-ray crystallography, static magnetization M measurements and high-field electron spin resonance (HF-ESR). The dinuclear complex 2 has a central N(3)Ni(2)(mu-S)(2)(mu-OAc)Ni(2)N(3) core with a mean Ni-S-Ni angle of 92 degrees . The macrocycle L(2) supports a trinuclear complex 3, with distorted octahedral N(2)O(2)S(2) and N(2)O(3)S coordination environments for one central and two terminal Ni(II) ions, respectively. The Ni-S-Ni angles are at 132.8 degrees and 133.5 degrees . We find that the variation of the bond angles has a very strong impact on the magnetic properties of the Ni complexes. In the case of the Ni(2)-complex, temperature T and magnetic field B dependencies of M reveal a ferromagnetic coupling J=-29 cm(-1) between two Ni(II) ions (H=JS(1)S(2)). HF-ESR measurements yield a negative axial magnetic anisotropy (D<0) which implies a bistable (easy axis) magnetic ground state. In contrast, for the Ni(3)-complex we find an appreciable antiferromagnetic coupling J'=97 cm(-1) between the Ni(II) ions and a positive axial magnetic anisotropy (D>0) which implies an easy plane situation.
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Affiliation(s)
- Yulia Krupskaya
- Leibniz Institute for Solid State and Materials Research, IFW Dresden, 01171 Dresden, Germany.
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Lozan V. Azoligands as Bridged in Macrocyclic Dinickel Complexes. CHEMISTRY JOURNAL OF MOLDOVA 2010. [DOI: 10.19261/cjm.2010.05(1).01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The coordination chemistry of dinickel macrocyclic hexaamine-dithiophenolate complexes of Robson-type with azoligands is presented in this microreview. All complexes have been characterised by IR-,UV/Visspectroscopy, and X-ray crystallography. The bioctahedral transition metal complexes of the type [(L6)Ni2(μ-L')]+ exhibit a rich coordination chemistry since the active coordination site L' is accessible for a wide range of exogenous coligands.
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Lozan V. Stabilization of Unusual Substrate Coordination Modes in Dinuclear Macrocyclic Complexes. CHEMISTRY JOURNAL OF MOLDOVA 2010. [DOI: 10.19261/cjm.2010.05(1).02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The steric protection offered by the macrobinucleating hexaazaditiophenolateligand (L) allows for the preparation of the first stable dinuclear nickel(II) borohydride bridged complex, which reacts rapidly with elemental sulphur producing a tetranuclear nickel(II) complex [{(L)Ni2}2(μ-S6)]2+ bearing a helical μ4-hexa- sulfide ligand. The [(L)CoII 2]2+ fragment have been able to trap a monomethyl orthomolybdate in the binding pocket. Unusual coordination modes of substrate in dinuclear macrocyclic compounds was demonstrated.
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Jones MB, Newell BS, Hoffert WA, Hardcastle KI, Shores MP, MacBeth CE. Chelating tris(amidate) ligands: versatile scaffolds for nickel(ii). Dalton Trans 2010:401-10. [DOI: 10.1039/b914301g] [Citation(s) in RCA: 21] [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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Kersting B, Lehmann U. Chemistry of metalated container molecules. ADVANCES IN INORGANIC CHEMISTRY 2009. [DOI: 10.1016/s0898-8838(09)00207-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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