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Tapangpan P, Chiangraeng N, Boer SA, Semakul N, Nimmanpipug P, Rujiwatra A. Mercury removal efficiency of disulfide- and thiol-functionalized lanthanide coordination polymers. CHEMOSPHERE 2022; 305:135330. [PMID: 35724718 DOI: 10.1016/j.chemosphere.2022.135330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 05/24/2022] [Accepted: 06/10/2022] [Indexed: 06/15/2023]
Abstract
To compare efficiency of disulfide and thiol groups in removing mercury from aqueous medium without noteworthy influence from structural differences, a series of new [LnIII(dtba)1.5(H2O)2] (LnIII = EuIII (I), GdIII (II) and TbIII (III), H2dtba = 4,4'-dithiobenzoic acid) were synthesized and characterized. The single crystal structure of I was elucidated and is described. Reaction of II with hydrazine gave IISH containing disulfide and thiol groups. Experimental data confirmed the preserved framework structure and the co-existing of disulfide and thiol groups in IISH. Robustness of II and IISH over a wide range of pH (2-10) was confirmed and their mercury removal performances at different pH were evaluated in terms of removal efficiencies (%R), equilibrium uptake capacities (qe) and distribution constant (Kd). The dependence of these parameters on pH is reported. The best values of %R, qe and Kd could be achieved at pH 10 at which surfaces of the adsorbents were negatively charged; 86%R, 429 mg g-1, and 6.04 × 103 mL g-1 (II), and 98%R, 490 mg g-1 and 5.08 × 104 mL g-1 (IISH). At pH 7, influences of the initial concentration of mercury on performances of the adsorbents as well as the adsorption isotherms and kinetics were examined from which the better performance of IISH has been concluded. The characterization of the adsorptions by the Langmuir model and the pseudo-second-order kinetic as well as their excellent consistency with the experimental data are included. At neutral pH, selectivity to the adsorption of mercury and tolerance to common anions were illustrated. The better affinity between mercury and thiol group and therefore its contribution to the better performance of IISH was then ascertained by a computational study.
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Affiliation(s)
- Pimchanok Tapangpan
- Department of Chemistry, Faculty of Science, Chiang Mai University, 239 Houy Kaew Road, Chiang Mai, 50200, Thailand
| | - Natthiti Chiangraeng
- Department of Chemistry, Faculty of Science, Chiang Mai University, 239 Houy Kaew Road, Chiang Mai, 50200, Thailand
| | - Stephanie A Boer
- ANSTO Australian Synchrotron, 800 Blackburn Road, Clayton, VIC, 3168, Australia
| | - Natthawat Semakul
- Department of Chemistry, Faculty of Science, Chiang Mai University, 239 Houy Kaew Road, Chiang Mai, 50200, Thailand; Materials Science Research Center, Faculty of Science, Chiang Mai University, 239 Houy Kaew Road, Chiang Mai, 50200, Thailand
| | - Piyarat Nimmanpipug
- Department of Chemistry, Faculty of Science, Chiang Mai University, 239 Houy Kaew Road, Chiang Mai, 50200, Thailand; Materials Science Research Center, Faculty of Science, Chiang Mai University, 239 Houy Kaew Road, Chiang Mai, 50200, Thailand
| | - Apinpus Rujiwatra
- Department of Chemistry, Faculty of Science, Chiang Mai University, 239 Houy Kaew Road, Chiang Mai, 50200, Thailand; Materials Science Research Center, Faculty of Science, Chiang Mai University, 239 Houy Kaew Road, Chiang Mai, 50200, Thailand.
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Pal N, Naskar T, Majumdar A. Synthesis, structural diversity and redox reactions in 1, 2- Bis(diphenylphopshinoethane)Nickel(II)-Thiolate complexes. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2021.120738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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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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Klose J, Severin T, Hahn P, Jeremies A, Bergmann J, Fuhrmann D, Griebel J, Abel B, Kersting B. Coordination chemistry and photoswitching of dinuclear macrocyclic cadmium-, nickel-, and zinc complexes containing azobenzene carboxylato co-ligands. Beilstein J Org Chem 2019; 15:840-851. [PMID: 31019576 PMCID: PMC6466696 DOI: 10.3762/bjoc.15.81] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 03/15/2019] [Indexed: 11/23/2022] Open
Abstract
The synthesis of mixed-ligand complexes of the type [M2L(μ-L')]+, where L represents a 24-membered macrocyclic hexaaza-dithiophenolate ligand, L' is an azobenzene carboxylate co-ligand, and M = Cd(II), Ni(II) or Zn(II), is reported. A series of new complexes were synthesized, namely [M2L(μ-L')]+ (L' = azo-H, M = Cd (1), Ni (2); L' = azo-OH, M = Zn (3), Ni (4); L' = azo-NMe2, M = Zn (5), Cd (6), Ni (7); L' = azo-CO2Me, M = Cd (8), Ni (9)), and characterized by elemental analysis, electrospray ionization mass spectrometry (ESIMS), IR, UV-vis and NMR spectroscopy (for diamagnetic Zn and Cd complexes) and X-ray single crystal structure analysis. The crystal structures of 3' and 5-8 display an isostructural series of compounds with bridging azobenzene carboxylates in the trans form. The paramagnetic Ni complexes 2, 4 and 7 reveal a weak ferromagnetic exchange interaction with magnetic exchange coupling constant values between 21 and 23 cm-1 (H = -2JS1S2). Irradiation of 1 with λ = 365 nm reveals a photoisomerization of the co-ligand from the trans to the cis form.
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Affiliation(s)
- Jennifer Klose
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany, Fax: +49(0)341-97-36199
| | - Tobias Severin
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany, Fax: +49(0)341-97-36199
| | - Peter Hahn
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany, Fax: +49(0)341-97-36199
| | - Alexander Jeremies
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany, Fax: +49(0)341-97-36199
| | - Jens Bergmann
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany, Fax: +49(0)341-97-36199
| | - Daniel Fuhrmann
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany, Fax: +49(0)341-97-36199
| | - Jan Griebel
- Leibniz-Institut für Oberflächenmodifizierung e. V., Abteilung Funktionale Oberflächen, D-04318 Leipzig, Germany
- Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie, Universität Leipzig, Linnéstraße 2, D-04103 Leipzig, Germany
| | - Bernd Abel
- Leibniz-Institut für Oberflächenmodifizierung e. V., Abteilung Funktionale Oberflächen, D-04318 Leipzig, Germany
- Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie, Universität Leipzig, Linnéstraße 2, D-04103 Leipzig, Germany
| | - Berthold Kersting
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany, Fax: +49(0)341-97-36199
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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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Tiekink ER, Henderson W. Coordination chemistry of 3- and 4-mercaptobenzoate ligands: Versatile hydrogen-bonding isomers of the thiosalicylate (2-mercaptobenzoate) ligand. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.03.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Salazar C, Lach J, Rückerl F, Baumann D, Schimmel S, Knupfer M, Kersting B, Büchner B, Hess C. STM Study of Au(111) Surface-Grafted Paramagnetic Macrocyclic Complexes [Ni2L(Hmba)](+) via Ambidentate Coligands. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:4464-4471. [PMID: 27093097 DOI: 10.1021/acs.langmuir.6b00772] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Molecular anchoring and electronic properties of macrocyclic complexes fixed on gold surfaces have been investigated mainly by using scanning tunnelling microscopy (STM) and complemented with X-ray photoelectron spectroscopy (XPS). Exchange-coupled macrocyclic complexes [Ni2L(Hmba)](+) were deposited via 4-mercaptobenzoate ligands on the surface of a Au(111) single crystal from a mM solution of the perchlorate salt [Ni2L(Hmba)]ClO4 in dichloromethane. The combined results from STM and XPS show the formation of large monolayers anchored via Au-S bonds with a height of about 1.5 nm. Two apparent granular structures are visible: one related to the dinickel molecular complexes (cationic structures) and a second one related to the counterions ClO4(-) which stabilize the monolayer. No type of short and long-range order is observed. STM tip-interaction with the monolayer reveals higher degradation after 8 h of measurement. Spectroscopy measurements suggest a gap of about 2.5 eV between HOMO and LUMO of the cationic structures and smaller gap in the areas related to the anionic structures.
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Affiliation(s)
- Christian Salazar
- Leibniz Institute for Solid State and Materials Research (IFW-Dresden) , Helmholtzstrasse 20, 01171 Dresden, Germany
| | - Jochen Lach
- Institut für Anorganische Chemie, Universität Leipzig , 04103 Leipzig, Germany
| | - Florian Rückerl
- Leibniz Institute for Solid State and Materials Research (IFW-Dresden) , Helmholtzstrasse 20, 01171 Dresden, Germany
| | - Danny Baumann
- Leibniz Institute for Solid State and Materials Research (IFW-Dresden) , Helmholtzstrasse 20, 01171 Dresden, Germany
| | - Sebastian Schimmel
- Leibniz Institute for Solid State and Materials Research (IFW-Dresden) , Helmholtzstrasse 20, 01171 Dresden, Germany
| | - Martin Knupfer
- Leibniz Institute for Solid State and Materials Research (IFW-Dresden) , Helmholtzstrasse 20, 01171 Dresden, Germany
| | - Berthold Kersting
- Institut für Anorganische Chemie, Universität Leipzig , 04103 Leipzig, Germany
| | - Bernd Büchner
- Leibniz Institute for Solid State and Materials Research (IFW-Dresden) , Helmholtzstrasse 20, 01171 Dresden, Germany
- Center for Transport and Devices, Technische Universität Dresden , 01069 Dresden, Germany
| | - Christian Hess
- Leibniz Institute for Solid State and Materials Research (IFW-Dresden) , Helmholtzstrasse 20, 01171 Dresden, Germany
- Center for Transport and Devices, Technische Universität Dresden , 01069 Dresden, Germany
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