251
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Axelson JC, Gonzalez MI, Meihaus KR, Chang CJ, Long JR. Synthesis and Characterization of a Tetrapodal NO4(4-) Ligand and Its Transition Metal Complexes. Inorg Chem 2016; 55:7527-34. [PMID: 27404805 DOI: 10.1021/acs.inorgchem.6b00908] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
We present the synthesis and characterization of alkali metal salts of the new tetraanionic, tetrapodal ligand 2,2'-(pyridine-2,6-diyl)bis(2-methylmalonate) (A4[PY(CO2)4], A = Li(+), Na(+), K(+), and Cs(+)), via deprotection of the neutral tetrapodal ligand tetraethyl 2,2'-(pyridine-2,6-diyl)bis(2-methylmalonate) (PY(CO2Et)4). The [PY(CO2)4](4-) ligand is composed of an axial pyridine and four equatorial carboxylate groups and must be kept at or below 0 °C to prevent decomposition. Exposing it to a number of divalent first-row transition metals cleanly forms complexes to give the series K2[(PY(CO2)4)M(H2O)] (M = Mn(2+), Fe(2+), Co(2+), Ni(2+), Zn(2+)). The metal complexes were comprehensively characterized via single-crystal X-ray diffraction, (1)H NMR and UV-vis absorption spectroscopy, and cyclic voltammetry. Crystal structures reveal that [PY(CO2)4](4-) coordinates in a pentadentate fashion to allow for a nearly ideal octahedral coordination geometry upon binding an exogenous water ligand. Additionally, depending on the nature of the charge-balancing countercation (Li(+), Na(+), or K(+)), the [(PY(CO2)4)M(H2O)](2-) complexes can assemble in the solid state to form one-dimensional channels filled with water molecules. Aqueous electrochemistry performed on [(PY(CO2)4)M(H2O)](2-) suggested accessible trivalent oxidation states for the Fe, Co, and Ni complexes, and the trivalent Co(3+) species [(PY(CO2)4)Co(OH)](2-) could be isolated via chemical oxidation. The successful synthesis of the [PY(CO2)4](4-) ligand and its transition metal complexes illustrates the still-untapped versatility within the tetrapodal ligand family, which may yet hold promise for the isolation of more reactive and higher-valent metal complexes.
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Affiliation(s)
- Jordan C Axelson
- Departments of Chemistry, ‡Molecular and Cell Biology, and #Chemical and Biomolecular Engineering and the §Howard Hughes Medical Institute, University of California , Berkeley, California 94720, United States.,Chemical Sciences Division and &Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
| | - Miguel I Gonzalez
- Departments of Chemistry, ‡Molecular and Cell Biology, and #Chemical and Biomolecular Engineering and the §Howard Hughes Medical Institute, University of California , Berkeley, California 94720, United States.,Chemical Sciences Division and &Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
| | - Katie R Meihaus
- Departments of Chemistry, ‡Molecular and Cell Biology, and #Chemical and Biomolecular Engineering and the §Howard Hughes Medical Institute, University of California , Berkeley, California 94720, United States.,Chemical Sciences Division and &Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
| | - Christopher J Chang
- Departments of Chemistry, ‡Molecular and Cell Biology, and #Chemical and Biomolecular Engineering and the §Howard Hughes Medical Institute, University of California , Berkeley, California 94720, United States.,Chemical Sciences Division and &Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
| | - Jeffrey R Long
- Departments of Chemistry, ‡Molecular and Cell Biology, and #Chemical and Biomolecular Engineering and the §Howard Hughes Medical Institute, University of California , Berkeley, California 94720, United States.,Chemical Sciences Division and &Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
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252
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Chen G, Zhao Y, Shang L, Waterhouse GIN, Kang X, Wu LZ, Tung CH, Zhang T. Recent Advances in the Synthesis, Characterization and Application of Zn +-containing Heterogeneous Catalysts. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2016; 3:1500424. [PMID: 27818902 PMCID: PMC5072390 DOI: 10.1002/advs.201500424] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 01/09/2016] [Indexed: 06/06/2023]
Abstract
Monovalent Zn+ (3d104s1) systems possess a special electronic structure that can be exploited in heterogeneous catalysis and photocatalysis, though it remains challenge to synthesize Zn+-containing materials. By careful design, Zn+-related species can be synthesized in zeolite and layered double hydroxide systems, which in turn exhibit excellent catalytic potential in methane, CO and CO2 activation. Furthermore, by utilizing advanced characterization tools, including electron spin resonance, X-ray absorption fine structure and density functional theory calculations, the formation mechanism of the Zn+ species and their structure-performance relationships can be understood. Such advanced characterization tools guide the rational design of high-performance Zn+-containing catalysts for efficient energy conversion.
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Affiliation(s)
- Guangbo Chen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry and Materials Science Northwest University Xi'an 710069 P.R. China; Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 P.R. China
| | - Yufei Zhao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 P.R. China
| | - Lu Shang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 P.R. China
| | | | - Xiaofeng Kang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry and Materials Science Northwest University Xi'an 710069 P.R. China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 P.R. China
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 P.R. China
| | - Tierui Zhang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 P.R. China
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253
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Lu XF, Liao PQ, Wang JW, Wu JX, Chen XW, He CT, Zhang JP, Li GR, Chen XM. An Alkaline-Stable, Metal Hydroxide Mimicking Metal–Organic Framework for Efficient Electrocatalytic Oxygen Evolution. J Am Chem Soc 2016; 138:8336-9. [DOI: 10.1021/jacs.6b03125] [Citation(s) in RCA: 389] [Impact Index Per Article: 48.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Xue-Feng Lu
- MOE Key
Laboratory of Bioinorganic
and Synthetic Chemistry, KLGHEI of Environment and Energy Chemistry,
School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Pei-Qin Liao
- MOE Key
Laboratory of Bioinorganic
and Synthetic Chemistry, KLGHEI of Environment and Energy Chemistry,
School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Jia-Wei Wang
- MOE Key
Laboratory of Bioinorganic
and Synthetic Chemistry, KLGHEI of Environment and Energy Chemistry,
School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Jun-Xi Wu
- MOE Key
Laboratory of Bioinorganic
and Synthetic Chemistry, KLGHEI of Environment and Energy Chemistry,
School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Xun-Wei Chen
- MOE Key
Laboratory of Bioinorganic
and Synthetic Chemistry, KLGHEI of Environment and Energy Chemistry,
School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Chun-Ting He
- MOE Key
Laboratory of Bioinorganic
and Synthetic Chemistry, KLGHEI of Environment and Energy Chemistry,
School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Jie-Peng Zhang
- MOE Key
Laboratory of Bioinorganic
and Synthetic Chemistry, KLGHEI of Environment and Energy Chemistry,
School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Gao-Ren Li
- MOE Key
Laboratory of Bioinorganic
and Synthetic Chemistry, KLGHEI of Environment and Energy Chemistry,
School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Xiao-Ming Chen
- MOE Key
Laboratory of Bioinorganic
and Synthetic Chemistry, KLGHEI of Environment and Energy Chemistry,
School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
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254
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Engelmann X, Monte-Pérez I, Ray K. Oxidationsreaktionen mit bioinspirierten einkernigen Nicht-Häm-Oxidometallkomplexen. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600507] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xenia Engelmann
- Institut für Chemie; Humboldt-Universität zu Berlin; Brook-Taylor-Straße 2 12489 Berlin Deutschland
| | - Inés Monte-Pérez
- Institut für Chemie; Humboldt-Universität zu Berlin; Brook-Taylor-Straße 2 12489 Berlin Deutschland
| | - Kallol Ray
- Institut für Chemie; Humboldt-Universität zu Berlin; Brook-Taylor-Straße 2 12489 Berlin Deutschland
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255
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Engelmann X, Monte-Pérez I, Ray K. Oxidation Reactions with Bioinspired Mononuclear Non-Heme Metal-Oxo Complexes. Angew Chem Int Ed Engl 2016; 55:7632-49. [DOI: 10.1002/anie.201600507] [Citation(s) in RCA: 207] [Impact Index Per Article: 25.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2016] [Revised: 03/15/2016] [Indexed: 12/22/2022]
Affiliation(s)
- Xenia Engelmann
- Department of Chemistry; Humboldt-Universität zu Berlin; Brook-Taylor-Strasse 2 12489 Berlin Germany
| | - Inés Monte-Pérez
- Department of Chemistry; Humboldt-Universität zu Berlin; Brook-Taylor-Strasse 2 12489 Berlin Germany
| | - Kallol Ray
- Department of Chemistry; Humboldt-Universität zu Berlin; Brook-Taylor-Strasse 2 12489 Berlin Germany
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256
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Xiao D, Gonzalez MI, Darago LE, Vogiatzis KD, Haldoupis E, Gagliardi L, Long JR. Selective, Tunable O2 Binding in Cobalt(II)-Triazolate/Pyrazolate Metal-Organic Frameworks. J Am Chem Soc 2016; 138:7161-70. [PMID: 27180991 PMCID: PMC4901364 DOI: 10.1021/jacs.6b03680] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2016] [Indexed: 11/30/2022]
Abstract
The air-free reaction of CoCl2 with 1,3,5-tri(1H-1,2,3-triazol-5-yl)benzene (H3BTTri) in N,N-dimethylformamide (DMF) and methanol leads to the formation of Co-BTTri (Co3[(Co4Cl)3(BTTri)8]2·DMF), a sodalite-type metal-organic framework. Desolvation of this material generates coordinatively unsaturated low-spin cobalt(II) centers that exhibit a strong preference for binding O2 over N2, with isosteric heats of adsorption (Qst) of -34(1) and -12(1) kJ/mol, respectively. The low-spin (S = 1/2) electronic configuration of the metal centers in the desolvated framework is supported by structural, magnetic susceptibility, and computational studies. A single-crystal X-ray structure determination reveals that O2 binds end-on to each framework cobalt center in a 1:1 ratio with a Co-O2 bond distance of 1.973(6) Å. Replacement of one of the triazolate linkers with a more electron-donating pyrazolate group leads to the isostructural framework Co-BDTriP (Co3[(Co4Cl)3(BDTriP)8]2·DMF; H3BDTriP = 5,5'-(5-(1H-pyrazol-4-yl)-1,3-phenylene)bis(1H-1,2,3-triazole)), which demonstrates markedly higher yet still fully reversible O2 affinities (Qst = -47(1) kJ/mol at low loadings). Electronic structure calculations suggest that the O2 adducts in Co-BTTri are best described as cobalt(II)-dioxygen species with partial electron transfer, while the stronger binding sites in Co-BDTriP form cobalt(III)-superoxo moieties. The stability, selectivity, and high O2 adsorption capacity of these materials render them promising new adsorbents for air separation processes.
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Affiliation(s)
- Dianne
J. Xiao
- Department of Chemistry and Department of Chemical
and Biomolecular Engineering, University
of California, Berkeley, California 94720, United States
| | - Miguel I. Gonzalez
- Department of Chemistry and Department of Chemical
and Biomolecular Engineering, University
of California, Berkeley, California 94720, United States
| | - Lucy E. Darago
- Department of Chemistry and Department of Chemical
and Biomolecular Engineering, University
of California, Berkeley, California 94720, United States
| | - Konstantinos D. Vogiatzis
- Department
of Chemistry, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Emmanuel Haldoupis
- Department
of Chemistry, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Laura Gagliardi
- Department
of Chemistry, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Jeffrey R. Long
- Department of Chemistry and Department of Chemical
and Biomolecular Engineering, University
of California, Berkeley, California 94720, United States
- Materials
Sciences Division, Lawrence Berkeley National
Laboratory, Berkeley, California 94720, United States
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257
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Bae SH, Seo MS, Lee YM, Cho KB, Kim WS, Nam W. Mononuclear Nonheme High-Spin (S
=2) versus Intermediate-Spin (S
=1) Iron(IV)-Oxo Complexes in Oxidation Reactions. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201603978] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Seong Hee Bae
- Department of Chemistry and Nano Science; Ewha Womans University; Seoul 03760 Korea
| | - Mi Sook Seo
- Department of Chemistry and Nano Science; Ewha Womans University; Seoul 03760 Korea
| | - Yong-Min Lee
- Department of Chemistry and Nano Science; Ewha Womans University; Seoul 03760 Korea
| | - Kyung-Bin Cho
- Department of Chemistry and Nano Science; Ewha Womans University; Seoul 03760 Korea
| | - Won-Suk Kim
- Department of Chemistry and Nano Science; Ewha Womans University; Seoul 03760 Korea
| | - Wonwoo Nam
- Department of Chemistry and Nano Science; Ewha Womans University; Seoul 03760 Korea
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258
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Bae SH, Seo MS, Lee YM, Cho KB, Kim WS, Nam W. Mononuclear Nonheme High-Spin (S=2) versus Intermediate-Spin (S=1) Iron(IV)-Oxo Complexes in Oxidation Reactions. Angew Chem Int Ed Engl 2016; 55:8027-31. [PMID: 27273456 DOI: 10.1002/anie.201603978] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Indexed: 12/18/2022]
Abstract
Mononuclear nonheme high-spin (S=2) iron(IV)-oxo species have been identified as the key intermediates responsible for the C-H bond activation of organic substrates in nonheme iron enzymatic reactions. Herein we report that the C-H bond activation of hydrocarbons by a synthetic mononuclear nonheme high-spin (S=2) iron(IV)-oxo complex occurs through an oxygen non-rebound mechanism, as previously demonstrated in the C-H bond activation by nonheme intermediate (S=1) iron(IV)-oxo complexes. We also report that C-H bond activation is preferred over C=C epoxidation in the oxidation of cyclohexene by the nonheme high-spin (HS) and intermediate-spin (IS) iron(IV)-oxo complexes, whereas the C=C double bond epoxidation becomes a preferred pathway in the oxidation of deuterated cyclohexene by the nonheme HS and IS iron(IV)-oxo complexes. In the epoxidation of styrene derivatives, the HS and IS iron(IV) oxo complexes are found to have similar electrophilic characters.
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Affiliation(s)
- Seong Hee Bae
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul, 03760, Korea
| | - Mi Sook Seo
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul, 03760, Korea
| | - Yong-Min Lee
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul, 03760, Korea
| | - Kyung-Bin Cho
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul, 03760, Korea
| | - Won-Suk Kim
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul, 03760, Korea
| | - Wonwoo Nam
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul, 03760, Korea.
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259
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Madsen SR, Moggach SA, Overgaard J, Brummerstedt Iversen B. Anisotropic compressibility of the coordination polymer emim[Mn(btc)]. ACTA CRYSTALLOGRAPHICA SECTION B, STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS 2016; 72:389-394. [PMID: 27240770 DOI: 10.1107/s2052520616005515] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 04/02/2016] [Indexed: 06/05/2023]
Abstract
The effect of pressure on the crystal structure of a coordination polymer, emim[Mn(II)(btc)] (emim = 1-ethyl,3-methyl imidazolium cation, btc = 1,3,5-benzene-tricarboxylate), was investigated with single-crystal X-ray diffraction. At 4.3 GPa the unit-cell volume had decreased by 14% compared with ambient conditions. The unit-cell contraction is highly anisotropic, with the a- and b-axes decreasing by 5.5 and 9.5%, respectively, and the c-axis compressing a mere 0.25% up to 1.7 GPa followed by a 0.2% expansion between 1.7 and 4.3 GPa. The 0.2% increase in length of the c-axis in this interval happens above the quasi-hydrostatic limit of the pressure-transmitting medium and therefore it might be a consequence of strain gradients. Under ambient conditions, two MnO6 units are connected by two carboxylate ligands to form dimeric units. On increasing pressure, a non-bonded O atom from a bridging carboxylate group approaches the Mn atom, with the Mn-O distance decreasing from 2.866 (1) Å at 0.3 GPa to 2.482 (6) Å at 4.3 GPa, increasing the coordination environment of the Mn ion from six- to seven-coordinated.
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Affiliation(s)
- Solveig R Madsen
- Center for Materials Crystallography, Department of Chemistry and iNANO, DK-8000 Aarhus C, Denmark
| | - Stephen A Moggach
- School of Chemistry, University of Edinburgh, West Mains Road, Edinburgh EH9 3JJ, Scotland
| | - Jacob Overgaard
- Center for Materials Crystallography, Department of Chemistry and iNANO, DK-8000 Aarhus C, Denmark
| | - Bo Brummerstedt Iversen
- Center for Materials Crystallography, Department of Chemistry and iNANO, DK-8000 Aarhus C, Denmark
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260
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An Overview of Recent Advances of the Catalytic Selective Oxidation of Ethane to Oxygenates. Catalysts 2016. [DOI: 10.3390/catal6050071] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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261
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Borycz J, Paier J, Verma P, Darago LE, Xiao DJ, Truhlar DG, Long JR, Gagliardi L. Structural and Electronic Effects on the Properties of Fe2(dobdc) upon Oxidation with N2O. Inorg Chem 2016; 55:4924-34. [DOI: 10.1021/acs.inorgchem.6b00467] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Joshua Borycz
- Department of Chemistry, Minnesota Supercomputing Institute,
and Chemical Theory Center, University of Minnesota, 207 Pleasant
Street SE, Minneapolis, Minnesota 55455-0431, United States
- Nanoporous Materials Genome Center, University of Minnesota, 207 Pleasant
Street SE, Minneapolis, Minnesota 55455-0431, United States
| | - Joachim Paier
- Institut für Chemie, Humboldt-Universität zu Berlin, Unter den
Linden 6, 10099 Berlin, Germany
| | - Pragya Verma
- Department of Chemistry, Minnesota Supercomputing Institute,
and Chemical Theory Center, University of Minnesota, 207 Pleasant
Street SE, Minneapolis, Minnesota 55455-0431, United States
- Nanoporous Materials Genome Center, University of Minnesota, 207 Pleasant
Street SE, Minneapolis, Minnesota 55455-0431, United States
| | - Lucy E. Darago
- Nanoporous Materials Genome Center, University of Minnesota, 207 Pleasant
Street SE, Minneapolis, Minnesota 55455-0431, United States
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States
| | - Dianne J. Xiao
- Nanoporous Materials Genome Center, University of Minnesota, 207 Pleasant
Street SE, Minneapolis, Minnesota 55455-0431, United States
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States
| | - Donald G. Truhlar
- Department of Chemistry, Minnesota Supercomputing Institute,
and Chemical Theory Center, University of Minnesota, 207 Pleasant
Street SE, Minneapolis, Minnesota 55455-0431, United States
- Nanoporous Materials Genome Center, University of Minnesota, 207 Pleasant
Street SE, Minneapolis, Minnesota 55455-0431, United States
| | - Jeffrey R. Long
- Nanoporous Materials Genome Center, University of Minnesota, 207 Pleasant
Street SE, Minneapolis, Minnesota 55455-0431, United States
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States
- Department
of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720-1462, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Laura Gagliardi
- Department of Chemistry, Minnesota Supercomputing Institute,
and Chemical Theory Center, University of Minnesota, 207 Pleasant
Street SE, Minneapolis, Minnesota 55455-0431, United States
- Nanoporous Materials Genome Center, University of Minnesota, 207 Pleasant
Street SE, Minneapolis, Minnesota 55455-0431, United States
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262
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Holmberg RJ, Burns T, Greer SM, Kobera L, Stoian SA, Korobkov I, Hill S, Bryce DL, Woo TK, Murugesu M. Intercalation of Coordinatively Unsaturated Fe(III) Ion within Interpenetrated Metal-Organic Framework MOF-5. Chemistry 2016; 22:7711-5. [PMID: 27061210 DOI: 10.1002/chem.201600566] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Indexed: 11/10/2022]
Abstract
Coordinatively unsaturated Fe(III) metal sites were successfully incorporated into the iconic MOF-5 framework. This new structure, Fe(III) -iMOF-5, is the first example of an interpenetrated MOF linked through intercalated metal ions. Structural characterization was performed with single-crystal and powder XRD, followed by extensive analysis by spectroscopic methods and solid-state NMR, which reveals the paramagnetic ion through its interaction with the framework. EPR and Mössbauer spectroscopy confirmed that the intercalated ions were indeed Fe(III) , whereas DFT calculations were employed to ascertain the unique pentacoordinate architecture around the Fe(III) ion. Interestingly, this is also the first crystallographic evidence of pentacoordinate Zn(II) within the MOF-5 SBU. This new MOF structure displays the potential for metal-site addition as a framework connector, thus creating further opportunity for the innovative development of new MOF materials.
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Affiliation(s)
- Rebecca J Holmberg
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - Thomas Burns
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - Samuel M Greer
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida, 32306, USA.,National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida, 32310, USA
| | - Libor Kobera
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - Sebastian A Stoian
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida, 32310, USA
| | - Ilia Korobkov
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - Stephen Hill
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida, 32310, USA.,Department of Physics, Florida State University, Tallahassee, Florida, 32306, USA
| | - David L Bryce
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - Tom K Woo
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada.
| | - Muralee Murugesu
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada.
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263
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Dhakshinamoorthy A, Asiri AM, Garcia H. Metal-Organic Frameworks as Catalysts for Oxidation Reactions. Chemistry 2016; 22:8012-24. [PMID: 27113486 DOI: 10.1002/chem.201505141] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 03/21/2016] [Indexed: 01/08/2023]
Abstract
This Concept is aimed at describing the current state of the art in metal-organic frameworks (MOFs) as heterogeneous catalysts for liquid-phase oxidations, focusing on three important substrates, namely, alkenes, alkanes and alcohols. Emphases are on the nature of active sites that have been incorporated within MOFs and on future targets to be set in this area. Thus, selective alkene epoxidation with peroxides or oxygen catalyzed by constitutional metal nodes of MOFs as active sites are still to be developed. Moreover, no noble metal-free MOF has been reported to date that can act as a general catalyst for the aerobic oxidation of primary and secondary aliphatic alcohols. In contrast, in the case of alkanes, a target should be to tune the polarity of MOF internal pores to control the outcome of the autooxidation process, resulting in the selective formation of alcohol/ketone mixtures at high conversion.
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Affiliation(s)
- Amarajothi Dhakshinamoorthy
- School of Chemistry, Madurai Kamaraj University, Tamil Nadu, 625 021, India. .,Instituto Universitario de Tecnología Química CSIC-UPV, Av. De los Naranjos s/n, 46022, Valencia, Spain.
| | - Abdullah M Asiri
- Centre of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Hermenegildo Garcia
- Instituto Universitario de Tecnología Química CSIC-UPV, Av. De los Naranjos s/n, 46022, Valencia, Spain. .,Centre of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
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264
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Luo F, Yan C, Dang L, Krishna R, Zhou W, Wu H, Dong X, Han Y, Hu TL, O’Keeffe M, Wang L, Luo M, Lin RB, Chen B. UTSA-74: A MOF-74 Isomer with Two Accessible Binding Sites per Metal Center for Highly Selective Gas Separation. J Am Chem Soc 2016; 138:5678-84. [DOI: 10.1021/jacs.6b02030] [Citation(s) in RCA: 391] [Impact Index Per Article: 48.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Feng Luo
- School
of Biology, Chemistry and Material Science, East China University of Technology, Fuzhou, Jiangxi 344000, China
| | - Changsheng Yan
- School
of Biology, Chemistry and Material Science, East China University of Technology, Fuzhou, Jiangxi 344000, China
| | - Lilong Dang
- School
of Biology, Chemistry and Material Science, East China University of Technology, Fuzhou, Jiangxi 344000, China
| | - Rajamani Krishna
- Van’t
Hoff Institute for Molecular Sciences, University of Amsterdam, Science
Park 904, 1098 XH Amsterdam, The Netherlands
| | - Wei Zhou
- Center
for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-6102, United States
| | - Hui Wu
- Center
for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-6102, United States
| | - Xinglong Dong
- Advanced
Membranes and Porous Materials Center, Physical Sciences and Engineering
Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Yu Han
- Advanced
Membranes and Porous Materials Center, Physical Sciences and Engineering
Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Tong-Liang Hu
- School
of Materials Science and Engineering, National Institute for Advanced
Materials, Collaborative Innovation Center of Chemical Science and
Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Michael O’Keeffe
- School of
Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
| | - Lingling Wang
- School
of Biology, Chemistry and Material Science, East China University of Technology, Fuzhou, Jiangxi 344000, China
| | - Mingbiao Luo
- School
of Biology, Chemistry and Material Science, East China University of Technology, Fuzhou, Jiangxi 344000, China
| | - Rui-Biao Lin
- Department
of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, United States
| | - Banglin Chen
- Department
of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, United States
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265
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Yoo GY, Lee WR, Jo H, Park J, Song JH, Lim KS, Moon D, Jung H, Lim J, Han SS, Jung Y, Hong CS. Adsorption of Carbon Dioxide on Unsaturated Metal Sites in M
2
(dobpdc) Frameworks with Exceptional Structural Stability and Relation between Lewis Acidity and Adsorption Enthalpy. Chemistry 2016; 22:7444-51. [DOI: 10.1002/chem.201600189] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Ga Young Yoo
- Department of Chemistry Korea University Seoul 136-713 Republic of Korea
| | - Woo Ram Lee
- Department of Chemistry Korea University Seoul 136-713 Republic of Korea
| | - Hyuna Jo
- Department of Chemistry Korea University Seoul 136-713 Republic of Korea
| | - Joonho Park
- Graduate School of Energy, Environment, Water and Sustainability (EEWS) Korea Advanced Institute of Science and Technology Daejeon 305-701 Republic of Korea
| | - Jeong Hwa Song
- Department of Chemistry Korea University Seoul 136-713 Republic of Korea
| | - Kwang Soo Lim
- Department of Chemistry Korea University Seoul 136-713 Republic of Korea
| | - Dohyun Moon
- Beamline Division Pohang Accelerator Laboratory Pohang Kyungbuk 790-784 Republic of Korea
| | - Hyun Jung
- Center for Computational Science Korea Institute of Science and Technology (KIST) Seoul 136-791 Republic of Korea
| | - Juhyung Lim
- Graduate School of Energy, Environment, Water and Sustainability (EEWS) Korea Advanced Institute of Science and Technology Daejeon 305-701 Republic of Korea
| | - Sang Soo Han
- Center for Computational Science Korea Institute of Science and Technology (KIST) Seoul 136-791 Republic of Korea
| | - Yousung Jung
- Graduate School of Energy, Environment, Water and Sustainability (EEWS) Korea Advanced Institute of Science and Technology Daejeon 305-701 Republic of Korea
| | - Chang Seop Hong
- Department of Chemistry Korea University Seoul 136-713 Republic of Korea
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266
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Olivos-Suarez AI, Szécsényi À, Hensen EJM, Ruiz-Martinez J, Pidko EA, Gascon J. Strategies for the Direct Catalytic Valorization of Methane Using Heterogeneous Catalysis: Challenges and Opportunities. ACS Catal 2016. [DOI: 10.1021/acscatal.6b00428] [Citation(s) in RCA: 336] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Alma I. Olivos-Suarez
- Catalysis
Engineering, Chemical Engineering Department Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands
| | - Àgnes Szécsényi
- Catalysis
Engineering, Chemical Engineering Department Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands
- Inorganic
Materials Chemistry group, Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Emiel J. M. Hensen
- Inorganic
Materials Chemistry group, Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Javier Ruiz-Martinez
- AkzoNobel - Supply Chain, Research & Development, Process Technology SRG, 7418 AJ Deventer, The Netherlands
- Inorganic
Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Evgeny A. Pidko
- Inorganic
Materials Chemistry group, Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
- Institute
for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Jorge Gascon
- Catalysis
Engineering, Chemical Engineering Department Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands
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267
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Reisi-Vanani A, Hamadanian M, Kokhdan SN. Functionalization of the sumanene by nitrous oxide: A mechanistic study. COMPUT THEOR CHEM 2016. [DOI: 10.1016/j.comptc.2016.03.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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268
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Tsivion E, Mason JA, Gonzalez MI, Long JR, Head-Gordon M. A computational study of CH 4 storage in porous framework materials with metalated linkers: connecting the atomistic character of CH 4 binding sites to usable capacity. Chem Sci 2016; 7:4503-4518. [PMID: 30155097 PMCID: PMC6016331 DOI: 10.1039/c6sc00529b] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 03/22/2016] [Indexed: 01/26/2023] Open
Abstract
Open-metal sites are shown to significantly increase the CH4 storage capacity of porous materials. It is shown that the capacity is not determined solely by their CH4 affinity, but also by their geometry as well as by guest molecules.
To store natural gas (NG) inexpensively at adequate densities for use as a fuel in the transportation sector, new porous materials are being developed. This work uses computational methods to explore strategies for improving the usable methane storage capacity of adsorbents, including metal–organic frameworks (MOFs), that feature open-metal sites incorporated into their structure by postsynthetic modification. The adsorption of CH4 on several open-metal sites is studied by calculating geometries and adsorption energies and analyzing the relevant interaction factors. Approximate site-specific adsorption isotherms are obtained, and the open-metal site contribution to the overall CH4 usable capacity is evaluated. It is found that sufficient ionic character is required, as exemplified by the strong CH4 affinities of 2,2′-bipyridine-CaCl2 and Mg, Ca-catecholate. In addition, it is found that the capacity of a single metal site depends not only on its affinity but also on its geometry, where trigonal or “bent” low-coordinate exposed sites can accommodate three or four methane molecules, as exemplified by Ca-decorated nitrilotriacetic acid. The effect of residual solvent molecules at the open-metal site is also explored, with some positive conclusions. Not only can residual solvent stabilize the open-metal site, surprisingly, solvent molecules do not necessarily reduce CH4 affinity, but can contribute to increased usable capacity by modifying adsorption interactions.
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Affiliation(s)
- Ehud Tsivion
- Materials Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , USA.,Department of Chemistry , University of California , Berkeley , California 94720 , USA .
| | - Jarad A Mason
- Department of Chemistry , University of California , Berkeley , California 94720 , USA .
| | - Miguel I Gonzalez
- Department of Chemistry , University of California , Berkeley , California 94720 , USA .
| | - Jeffrey R Long
- Materials Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , USA.,Department of Chemistry , University of California , Berkeley , California 94720 , USA . .,Department of Chemical and Biomolecular Engineering , University of California , Berkeley , California 94720 , USA
| | - Martin Head-Gordon
- Chemical Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , USA.,Department of Chemistry , University of California , Berkeley , California 94720 , USA .
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269
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Metzger ED, Brozek CK, Comito RJ, Dincă M. Selective Dimerization of Ethylene to 1-Butene with a Porous Catalyst. ACS CENTRAL SCIENCE 2016; 2:148-53. [PMID: 27163041 PMCID: PMC4827558 DOI: 10.1021/acscentsci.6b00012] [Citation(s) in RCA: 144] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Indexed: 05/19/2023]
Abstract
Current heterogeneous catalysts lack the fine steric and electronic tuning required for catalyzing the selective dimerization of ethylene to 1-butene, which remains one of the largest industrial processes still catalyzed by homogeneous catalysts. Here, we report that a metal-organic framework catalyzes ethylene dimerization with a combination of activity and selectivity for 1-butene that is premier among heterogeneous catalysts. The capacity for mild cation exchange in the material MFU-4l (MFU-4l = Zn5Cl4(BTDD)3, H2BTDD = bis(1H-1,2,3-triazolo[4,5-b],[4',5'-i])dibenzo[1,4]dioxin) was leveraged to create a well-defined and site-isolated Ni(II) active site bearing close structural homology to molecular tris-pyrazolylborate complexes. In the presence of ethylene and methylaluminoxane, the material consumes ethylene at a rate of 41,500 mol per mole of Ni per hour with a selectivity for 1-butene of up to 96.2%, exceeding the selectivity reported for the current industrial dimerization process.
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270
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Cao L, Lin Z, Peng F, Wang W, Huang R, Wang C, Yan J, Liang J, Zhang Z, Zhang T, Long L, Sun J, Lin W. Self‐Supporting Metal–Organic Layers as Single‐Site Solid Catalysts. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201512054] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Lingyun Cao
- College of Chemistry and Chemical Engineering, iCHEM, PCOSS Xiamen University Xiamen 361005 China
| | - Zekai Lin
- Department of Chemistry University of Chicago Chicago IL 60637 USA
| | - Fei Peng
- Berzelii Center EXCELLENT on Porous Materials Department of Materials and Environmental Chemistry Stockholm University 10691 Stockholm Sweden
| | - Weiwei Wang
- College of Chemistry and Chemical Engineering, iCHEM, PCOSS Xiamen University Xiamen 361005 China
| | - Ruiyun Huang
- College of Chemistry and Chemical Engineering, iCHEM, PCOSS Xiamen University Xiamen 361005 China
| | - Cheng Wang
- College of Chemistry and Chemical Engineering, iCHEM, PCOSS Xiamen University Xiamen 361005 China
| | - Jiawei Yan
- College of Chemistry and Chemical Engineering, iCHEM, PCOSS Xiamen University Xiamen 361005 China
| | - Jie Liang
- Berzelii Center EXCELLENT on Porous Materials Department of Materials and Environmental Chemistry Stockholm University 10691 Stockholm Sweden
| | - Zhiming Zhang
- College of Chemistry and Chemical Engineering, iCHEM, PCOSS Xiamen University Xiamen 361005 China
| | - Teng Zhang
- Department of Chemistry University of Chicago Chicago IL 60637 USA
| | - Lasheng Long
- College of Chemistry and Chemical Engineering, iCHEM, PCOSS Xiamen University Xiamen 361005 China
| | - Junliang Sun
- Berzelii Center EXCELLENT on Porous Materials Department of Materials and Environmental Chemistry Stockholm University 10691 Stockholm Sweden
- College of Chemistry and Molecular Engineering Peking University 100871 Beijing China
| | - Wenbin Lin
- College of Chemistry and Chemical Engineering, iCHEM, PCOSS Xiamen University Xiamen 361005 China
- Department of Chemistry University of Chicago Chicago IL 60637 USA
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271
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Cao L, Lin Z, Peng F, Wang W, Huang R, Wang C, Yan J, Liang J, Zhang Z, Zhang T, Long L, Sun J, Lin W. Self‐Supporting Metal–Organic Layers as Single‐Site Solid Catalysts. Angew Chem Int Ed Engl 2016; 55:4962-6. [DOI: 10.1002/anie.201512054] [Citation(s) in RCA: 249] [Impact Index Per Article: 31.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 02/09/2016] [Indexed: 01/07/2023]
Affiliation(s)
- Lingyun Cao
- College of Chemistry and Chemical Engineering, iCHEM, PCOSS Xiamen University Xiamen 361005 China
| | - Zekai Lin
- Department of Chemistry University of Chicago Chicago IL 60637 USA
| | - Fei Peng
- Berzelii Center EXCELLENT on Porous Materials Department of Materials and Environmental Chemistry Stockholm University 10691 Stockholm Sweden
| | - Weiwei Wang
- College of Chemistry and Chemical Engineering, iCHEM, PCOSS Xiamen University Xiamen 361005 China
| | - Ruiyun Huang
- College of Chemistry and Chemical Engineering, iCHEM, PCOSS Xiamen University Xiamen 361005 China
| | - Cheng Wang
- College of Chemistry and Chemical Engineering, iCHEM, PCOSS Xiamen University Xiamen 361005 China
| | - Jiawei Yan
- College of Chemistry and Chemical Engineering, iCHEM, PCOSS Xiamen University Xiamen 361005 China
| | - Jie Liang
- Berzelii Center EXCELLENT on Porous Materials Department of Materials and Environmental Chemistry Stockholm University 10691 Stockholm Sweden
| | - Zhiming Zhang
- College of Chemistry and Chemical Engineering, iCHEM, PCOSS Xiamen University Xiamen 361005 China
| | - Teng Zhang
- Department of Chemistry University of Chicago Chicago IL 60637 USA
| | - Lasheng Long
- College of Chemistry and Chemical Engineering, iCHEM, PCOSS Xiamen University Xiamen 361005 China
| | - Junliang Sun
- Berzelii Center EXCELLENT on Porous Materials Department of Materials and Environmental Chemistry Stockholm University 10691 Stockholm Sweden
- College of Chemistry and Molecular Engineering Peking University 100871 Beijing China
| | - Wenbin Lin
- College of Chemistry and Chemical Engineering, iCHEM, PCOSS Xiamen University Xiamen 361005 China
- Department of Chemistry University of Chicago Chicago IL 60637 USA
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272
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Xiao Z, Yang X, Zhao S, Wang D, Yang Y, Wang L. Metal–organic hybrid materials built with tetrachlorophthalate acid and different N-donor coligands: Structure diversity and photoluminescence. J SOLID STATE CHEM 2016. [DOI: 10.1016/j.jssc.2015.11.034] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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273
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Zheng H, Zhang Y, Liu L, Wan W, Guo P, Nyström AM, Zou X. One-pot Synthesis of Metal-Organic Frameworks with Encapsulated Target Molecules and Their Applications for Controlled Drug Delivery. J Am Chem Soc 2016; 138:962-8. [PMID: 26710234 DOI: 10.1021/jacs.5b11720] [Citation(s) in RCA: 791] [Impact Index Per Article: 98.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Many medical and chemical applications require target molecules to be delivered in a controlled manner at precise locations. Metal-organic frameworks (MOFs) have high porosity, large surface area, and tunable functionality and are promising carriers for such purposes. Current approaches for incorporating target molecules are based on multistep postfunctionalization. Here, we report a novel approach that combines MOF synthesis and molecule encapsulation in a one-pot process. We demonstrate that large drug and dye molecules can be encapsulated in zeolitic imidazolate framework (ZIF) crystals. The molecules are homogeneously distributed within the crystals, and their loadings can be tuned. We show that ZIF-8 crystals loaded with the anticancer drug doxorubicin (DOX) are efficient drug delivery vehicles in cancer therapy using pH-responsive release. Their efficacy on breast cancer cell lines is higher than that of free DOX. Our one-pot process opens new possibilities to construct multifunctional delivery systems for a wide range of applications.
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Affiliation(s)
- Haoquan Zheng
- Berzelii Center EXSELENT on Porous Materials, Department of Materials and Environmental Chemistry, Stockholm University , SE-106 91 Stockholm, Sweden
| | - Yuning Zhang
- Institute of Environmental Medicine, Karolinska Institutet , SE-171 77 Stockholm, Sweden
| | - Leifeng Liu
- Berzelii Center EXSELENT on Porous Materials, Department of Materials and Environmental Chemistry, Stockholm University , SE-106 91 Stockholm, Sweden
| | - Wei Wan
- Berzelii Center EXSELENT on Porous Materials, Department of Materials and Environmental Chemistry, Stockholm University , SE-106 91 Stockholm, Sweden
| | - Peng Guo
- Berzelii Center EXSELENT on Porous Materials, Department of Materials and Environmental Chemistry, Stockholm University , SE-106 91 Stockholm, Sweden
| | - Andreas M Nyström
- Institute of Environmental Medicine, Karolinska Institutet , SE-171 77 Stockholm, Sweden
| | - Xiaodong Zou
- Berzelii Center EXSELENT on Porous Materials, Department of Materials and Environmental Chemistry, Stockholm University , SE-106 91 Stockholm, Sweden
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274
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Krap CP, Newby R, Dhakshinamoorthy A, García H, Cebula I, Easun TL, Savage M, Eyley JE, Gao S, Blake AJ, Lewis W, Beton PH, Warren MR, Allan DR, Frogley MD, Tang CC, Cinque G, Yang S, Schröder M. Enhancement of CO2 Adsorption and Catalytic Properties by Fe-Doping of [Ga2(OH)2(L)] (H4L = Biphenyl-3,3',5,5'-tetracarboxylic Acid), MFM-300(Ga2). Inorg Chem 2016; 55:1076-88. [PMID: 26757137 PMCID: PMC4805307 DOI: 10.1021/acs.inorgchem.5b02108] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Metal-organic frameworks (MOFs) are usually synthesized using a single type of metal ion, and MOFs containing mixtures of different metal ions are of great interest and represent a methodology to enhance and tune materials properties. We report the synthesis of [Ga2(OH)2(L)] (H4L = biphenyl-3,3',5,5'-tetracarboxylic acid), designated as MFM-300(Ga2), (MFM = Manchester Framework Material replacing NOTT designation), by solvothermal reaction of Ga(NO3)3 and H4L in a mixture of DMF, THF, and water containing HCl for 3 days. MFM-300(Ga2) crystallizes in the tetragonal space group I4122, a = b = 15.0174(7) Å and c = 11.9111(11) Å and is isostructural with the Al(III) analogue MFM-300(Al2) with pores decorated with -OH groups bridging Ga(III) centers. The isostructural Fe-doped material [Ga(1.87)Fe(0.13)(OH)2(L)], MFM-300(Ga(1.87)Fe(0.13)), can be prepared under similar conditions to MFM-300(Ga2) via reaction of a homogeneous mixture of Fe(NO3)3 and Ga(NO3)3 with biphenyl-3,3',5,5'-tetracarboxylic acid. An Fe(III)-based material [Fe3O(1.5)(OH)(HL)(L)(0.5)(H2O)(3.5)], MFM-310(Fe), was synthesized with Fe(NO3)3 and the same ligand via hydrothermal methods. [MFM-310(Fe)] crystallizes in the orthorhombic space group Pmn21 with a = 10.560(4) Å, b = 19.451(8) Å, and c = 11.773(5) Å and incorporates μ3-oxo-centered trinuclear iron cluster nodes connected by ligands to give a 3D nonporous framework that has a different structure to the MFM-300 series. Thus, Fe-doping can be used to monitor the effects of the heteroatom center within a parent Ga(III) framework without the requirement of synthesizing the isostructural Fe(III) analogue [Fe2(OH)2(L)], MFM-300(Fe2), which we have thus far been unable to prepare. Fe-doping of MFM-300(Ga2) affords positive effects on gas adsorption capacities, particularly for CO2 adsorption, whereby MFM-300(Ga(1.87)Fe(0.13)) shows a 49% enhancement of CO2 adsorption capacity in comparison to the homometallic parent material. We thus report herein the highest CO2 uptake (2.86 mmol g(-1) at 273 K at 1 bar) for a Ga-based MOF. The single-crystal X-ray structures of MFM-300(Ga2)-solv, MFM-300(Ga2), MFM-300(Ga2)·2.35CO2, MFM-300(Ga(1.87)Fe(0.13))-solv, MFM-300(Ga(1.87)Fe(0.13)), and MFM-300(Ga(1.87)Fe(0.13))·2.0CO2 have been determined. Most notably, in situ single-crystal diffraction studies of gas-loaded materials have revealed that Fe-doping has a significant impact on the molecular details for CO2 binding in the pore, with the bridging M-OH hydroxyl groups being preferred binding sites for CO2 within these framework materials. In situ synchrotron IR spectroscopic measurements on CO2 binding with respect to the -OH groups in the pore are consistent with the above structural analyses. In addition, we found that, compared to MFM-300(Ga2), Fe-doped MFM-300(Ga(1.87)Fe(0.13)) shows improved catalytic properties for the ring-opening reaction of styrene oxide, but similar activity for the room-temperature acetylation of benzaldehyde by methanol. The role of Fe-doping in these systems is discussed as a mechanism for enhancing porosity and the structural integrity of the parent material.
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Affiliation(s)
- Cristina P Krap
- School of Chemistry, University of Nottingham , University Park, Nottingham, NG7 2RD, U.K
| | - Ruth Newby
- School of Chemistry, University of Nottingham , University Park, Nottingham, NG7 2RD, U.K
| | - Amarajothi Dhakshinamoorthy
- Instituto de Technologia Quimica (UPV-CSIC), Universidad Politecnica de Valencia , Avenida de los Naranjos s/n, Valencia, 46022, Spain
| | - Hermenegildo García
- Instituto de Technologia Quimica (UPV-CSIC), Universidad Politecnica de Valencia , Avenida de los Naranjos s/n, Valencia, 46022, Spain
| | - Izabela Cebula
- School of Physics, University of Nottingham , University Park, Nottingham, NG7 2RD, U.K.,Department of Chemical and Process Engineering, University of Strathclyde , James Weir Building, 75 Montrose Street, Glasgow G1 1XJ, U.K
| | - Timothy L Easun
- School of Chemistry, University of Nottingham , University Park, Nottingham, NG7 2RD, U.K.,School of Chemistry, Cardiff University , Main Building, Park Place, Cardiff, CF10 3AT, U.K
| | - Mathew Savage
- School of Chemistry, University of Nottingham , University Park, Nottingham, NG7 2RD, U.K
| | - Jennifer E Eyley
- School of Chemistry, University of Nottingham , University Park, Nottingham, NG7 2RD, U.K
| | - Shan Gao
- School of Chemistry, University of Nottingham , University Park, Nottingham, NG7 2RD, U.K
| | - Alexander J Blake
- School of Chemistry, University of Nottingham , University Park, Nottingham, NG7 2RD, U.K
| | - William Lewis
- School of Chemistry, University of Nottingham , University Park, Nottingham, NG7 2RD, U.K
| | - Peter H Beton
- Instituto de Technologia Quimica (UPV-CSIC), Universidad Politecnica de Valencia , Avenida de los Naranjos s/n, Valencia, 46022, Spain
| | - Mark R Warren
- Diamond Light Source , Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, U.K
| | - David R Allan
- Diamond Light Source , Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, U.K
| | - Mark D Frogley
- Diamond Light Source , Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, U.K
| | - Chiu C Tang
- Diamond Light Source , Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, U.K
| | - Gianfelice Cinque
- Diamond Light Source , Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, U.K
| | - Sihai Yang
- School of Chemistry, University of Manchester , Oxford Road, Manchester, M13 9PL, U.K
| | - Martin Schröder
- School of Chemistry, University of Manchester , Oxford Road, Manchester, M13 9PL, U.K
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275
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D'Alessandro DM. Exploiting redox activity in metal–organic frameworks: concepts, trends and perspectives. Chem Commun (Camb) 2016; 52:8957-71. [DOI: 10.1039/c6cc00805d] [Citation(s) in RCA: 238] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This feature article highlights latest developments in experimental, theoretical and computational concepts relevant to redox-active metal–organic Frameworks.
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276
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Terranova ZL, Paesani F. The effects of framework dynamics on the behavior of water adsorbed in the [Zn(l-L)(Cl)] and Co-MOF-74 metal–organic frameworks. Phys Chem Chem Phys 2016; 18:8196-204. [DOI: 10.1039/c5cp07681a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Density distributions of water molecules in the pores of the [Zn(l-L)(Cl)] metal–organic framework.
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Affiliation(s)
| | - Francesco Paesani
- Department of Chemistry and Biochemistry
- University of California
- La Jolla
- USA
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277
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Wang Y, Yi JM, Zhang MY, Xu P, Zhao XJ. I2-induced SC–SC transformation within two-dimensional Zn(ii)-triazole framework: an ideal detector of cyano-containing molecules. Chem Commun (Camb) 2016; 52:3099-102. [DOI: 10.1039/c5cc09279e] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A SC–SC transformation process driven by I2 has been shown to generate a 2D + 1D → 2D interpenetrated architecture from a 2D + 2D → 2D network. For the first time we demonstrate a selective sensor toward cyano-containing molecules.
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Affiliation(s)
- Ying Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education
- College of Chemistry
- Tianjin Normal University
| | - Jin-Min Yi
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education
- College of Chemistry
- Tianjin Normal University
| | - Meng-Yuan Zhang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education
- College of Chemistry
- Tianjin Normal University
| | - Ping Xu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education
- College of Chemistry
- Tianjin Normal University
| | - Xiao-Jun Zhao
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education
- College of Chemistry
- Tianjin Normal University
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278
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Sun Q, Liu M, Li K, Han Y, Zuo Y, Wang J, Song C, Zhang G, Guo X. Controlled synthesis of mixed-valent Fe-containing metal organic frameworks for the degradation of phenol under mild conditions. Dalton Trans 2016; 45:7952-9. [DOI: 10.1039/c5dt05002b] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The amount of Fe2+ in the iron-containing MOFs can be controlled by using varied ratios of n(FeCl3)/n(FeCl2) in the feed. The morphology of the crystal transforms from a small irregular shape to a large triangular prism.
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Affiliation(s)
- Qiao Sun
- State Key Laboratory of Fine Chemicals
- PSU-DUT Joint Center for Energy Research
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
| | - Min Liu
- State Key Laboratory of Fine Chemicals
- PSU-DUT Joint Center for Energy Research
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
| | - Keyan Li
- State Key Laboratory of Fine Chemicals
- PSU-DUT Joint Center for Energy Research
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
| | - Yitong Han
- State Key Laboratory of Fine Chemicals
- PSU-DUT Joint Center for Energy Research
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
| | - Yi Zuo
- State Key Laboratory of Fine Chemicals
- PSU-DUT Joint Center for Energy Research
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
| | - Junhu Wang
- Mössbauer Effect Data Center
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian
- People's Republic of China
| | - Chunshan Song
- State Key Laboratory of Fine Chemicals
- PSU-DUT Joint Center for Energy Research
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
| | - Guoliang Zhang
- College of Biological and Environmental Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- People's Republic of China
| | - Xinwen Guo
- State Key Laboratory of Fine Chemicals
- PSU-DUT Joint Center for Energy Research
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
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279
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Corona T, Company A. Nitrous oxide activation by a cobalt(ii) complex for aldehyde oxidation under mild conditions. Dalton Trans 2016; 45:14530-3. [DOI: 10.1039/c6dt01704e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new cobalt(ii) complex reacts with N2O under mild conditions and it catalytically performs the oxidation of aldehydes.
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Affiliation(s)
- Teresa Corona
- Grup de Química Bioinspirada
- Supramolecular i Catàlisi (QBIS-CAT)
- Institut de Química Computacional i Catàlisi (IQCC)
- Departament de Química
- Universitat de Girona
| | - Anna Company
- Grup de Química Bioinspirada
- Supramolecular i Catàlisi (QBIS-CAT)
- Institut de Química Computacional i Catàlisi (IQCC)
- Departament de Química
- Universitat de Girona
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280
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Otroshchenko T, Sokolov S, Stoyanova M, Kondratenko VA, Rodemerck U, Linke D, Kondratenko EV. Ein unkonventionelles Katalysatorsystem auf der Basis von ZrO
2
für die Propandehydrierung: Konzept, Synthese und aktive Zentren. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201508731] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Tatyana Otroshchenko
- Leibniz‐Institut für Katalyse e. V. an der Universität Rostock, Albert‐Einstein‐Straße 29A, 18059 Rostock (Deutschland)
| | - Sergey Sokolov
- Leibniz‐Institut für Katalyse e. V. an der Universität Rostock, Albert‐Einstein‐Straße 29A, 18059 Rostock (Deutschland)
| | - Mariana Stoyanova
- Leibniz‐Institut für Katalyse e. V. an der Universität Rostock, Albert‐Einstein‐Straße 29A, 18059 Rostock (Deutschland)
| | - Vita A. Kondratenko
- Leibniz‐Institut für Katalyse e. V. an der Universität Rostock, Albert‐Einstein‐Straße 29A, 18059 Rostock (Deutschland)
| | - Uwe Rodemerck
- Leibniz‐Institut für Katalyse e. V. an der Universität Rostock, Albert‐Einstein‐Straße 29A, 18059 Rostock (Deutschland)
| | - David Linke
- Leibniz‐Institut für Katalyse e. V. an der Universität Rostock, Albert‐Einstein‐Straße 29A, 18059 Rostock (Deutschland)
| | - Evgenii V. Kondratenko
- Leibniz‐Institut für Katalyse e. V. an der Universität Rostock, Albert‐Einstein‐Straße 29A, 18059 Rostock (Deutschland)
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281
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Otroshchenko T, Sokolov S, Stoyanova M, Kondratenko VA, Rodemerck U, Linke D, Kondratenko EV. ZrO
2
‐Based Alternatives to Conventional Propane Dehydrogenation Catalysts: Active Sites, Design, and Performance. Angew Chem Int Ed Engl 2015; 54:15880-3. [DOI: 10.1002/anie.201508731] [Citation(s) in RCA: 126] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 10/13/2015] [Indexed: 11/05/2022]
Affiliation(s)
- Tatyana Otroshchenko
- Leibniz‐Institut für Katalyse e. V. an der Universität Rostock, Albert‐Einstein‐Strasse 29A, 18059 Rostock (Germany)
| | - Sergey Sokolov
- Leibniz‐Institut für Katalyse e. V. an der Universität Rostock, Albert‐Einstein‐Strasse 29A, 18059 Rostock (Germany)
| | - Mariana Stoyanova
- Leibniz‐Institut für Katalyse e. V. an der Universität Rostock, Albert‐Einstein‐Strasse 29A, 18059 Rostock (Germany)
| | - Vita A. Kondratenko
- Leibniz‐Institut für Katalyse e. V. an der Universität Rostock, Albert‐Einstein‐Strasse 29A, 18059 Rostock (Germany)
| | - Uwe Rodemerck
- Leibniz‐Institut für Katalyse e. V. an der Universität Rostock, Albert‐Einstein‐Strasse 29A, 18059 Rostock (Germany)
| | - David Linke
- Leibniz‐Institut für Katalyse e. V. an der Universität Rostock, Albert‐Einstein‐Strasse 29A, 18059 Rostock (Germany)
| | - Evgenii V. Kondratenko
- Leibniz‐Institut für Katalyse e. V. an der Universität Rostock, Albert‐Einstein‐Strasse 29A, 18059 Rostock (Germany)
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282
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Lee JS, Vlaisavljevich B, Britt DK, Brown CM, Haranczyk M, Neaton JB, Smit B, Long JR, Queen WL. Understanding Small-Molecule Interactions in Metal-Organic Frameworks: Coupling Experiment with Theory. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:5785-5796. [PMID: 26033176 DOI: 10.1002/adma.201500966] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 04/29/2015] [Indexed: 06/04/2023]
Abstract
Metal-organic frameworks (MOFs) have gained much attention as next-generation porous media for various applications, especially gas separation/storage, and catalysis. New MOFs are regularly reported; however, to develop better materials in a timely manner for specific applications, the interactions between guest molecules and the internal surface of the framework must first be understood. A combined experimental and theoretical approach is presented, which proves essential for the elucidation of small-molecule interactions in a model MOF system known as M2 (dobdc) (dobdc(4-) = 2,5-dioxido-1,4-benzenedicarboxylate; M = Mg, Mn, Fe, Co, Ni, Cu, or Zn), a material whose adsorption properties can be readily tuned via chemical substitution. It is additionally shown that the study of extensive families like this one can provide a platform to test the efficacy and accuracy of developing computational methodologies in slightly varying chemical environments, a task that is necessary for their evolution into viable, robust tools for screening large numbers of materials.
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Affiliation(s)
- Jason S Lee
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA, 94720, USA
| | - Bess Vlaisavljevich
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA, 94720, USA
| | - David K Britt
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Craig M Brown
- National Institute of Standards and Technology, Center for Neutron Research, Gaithersburg, MD, 20899, USA
- Department of Chemical Engineering, University of Delaware, Newark, DE, 19716, USA
| | - Maciej Haranczyk
- Computational Research Division Lawrence, Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Jeffrey B Neaton
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- Department of Physics, University of California, Berkeley, CA, 94720, USA
| | - Berend Smit
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA, 94720, USA
- Department Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, CH, Lausanne, Switzerland
| | - Jeffrey R Long
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA
- Division of Materials Sciences, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Wendy L Queen
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- Department Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, CH, Lausanne, Switzerland
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283
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Alvarez LX, Sorokin AB. Mild oxidation of ethane to acetic acid by H2O2 catalyzed by supported μ-nitrido diiron phthalocyanines. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.02.045] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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284
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Lin S, Diercks CS, Zhang YB, Kornienko N, Nichols EM, Zhao Y, Paris AR, Kim D, Yang P, Yaghi OM, Chang CJ. Covalent organic frameworks comprising cobalt porphyrins for catalytic CO₂ reduction in water. Science 2015; 349:1208-13. [PMID: 26292706 DOI: 10.1126/science.aac8343] [Citation(s) in RCA: 1325] [Impact Index Per Article: 147.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 08/05/2015] [Indexed: 12/12/2022]
Abstract
Conversion of carbon dioxide (CO2) to carbon monoxide (CO) and other value-added carbon products is an important challenge for clean energy research. Here we report modular optimization of covalent organic frameworks (COFs), in which the building units are cobalt porphyrin catalysts linked by organic struts through imine bonds, to prepare a catalytic material for aqueous electrochemical reduction of CO2 to CO. The catalysts exhibit high Faradaic efficiency (90%) and turnover numbers (up to 290,000, with initial turnover frequency of 9400 hour(-1)) at pH 7 with an overpotential of -0.55 volts, equivalent to a 26-fold improvement in activity compared with the molecular cobalt complex, with no degradation over 24 hours. X-ray absorption data reveal the influence of the COF environment on the electronic structure of the catalytic cobalt centers.
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Affiliation(s)
- Song Lin
- Department of Chemistry, University of California, Berkeley, CA 94720, USA. Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Christian S Diercks
- Department of Chemistry, University of California, Berkeley, CA 94720, USA. Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Yue-Biao Zhang
- Department of Chemistry, University of California, Berkeley, CA 94720, USA. Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA. School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Nikolay Kornienko
- Department of Chemistry, University of California, Berkeley, CA 94720, USA
| | - Eva M Nichols
- Department of Chemistry, University of California, Berkeley, CA 94720, USA. Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Yingbo Zhao
- Department of Chemistry, University of California, Berkeley, CA 94720, USA
| | - Aubrey R Paris
- Department of Chemistry, University of California, Berkeley, CA 94720, USA
| | - Dohyung Kim
- Department of Materials Science and Engineering, University of California, Berkeley, CA 94720, USA
| | - Peidong Yang
- Department of Chemistry, University of California, Berkeley, CA 94720, USA. Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA. Department of Materials Science and Engineering, University of California, Berkeley, CA 94720, USA. Kavli Energy Nanoscience Institute, Berkeley, CA 94720, USA
| | - Omar M Yaghi
- Department of Chemistry, University of California, Berkeley, CA 94720, USA. Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA. Kavli Energy Nanoscience Institute, Berkeley, CA 94720, USA. King Fahd University of Petroleum and Minerals, Dhahran 34464, Saudi Arabia.
| | - Christopher J Chang
- Department of Chemistry, University of California, Berkeley, CA 94720, USA. Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA. Howard Hughes Medical Institute, University of California, Berkeley, CA 94720, USA. Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720, USA.
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285
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Abstract
![]()
2003 marked a banner year in the bioinorganic chemistry of mononuclear
non-heme iron enzymes. The first non-heme oxoiron(IV) intermediate
(called J) was trapped and characterized
by Bollinger and Krebs in the catalytic cycle of taurine dioxygenase
(TauD), and the first crystal structure of a synthetic non-heme oxoiron(IV)
complex was reported by Münck, Nam, and Que. These results
stimulated inorganic chemists to synthesize related oxoiron(IV) complexes
to shed light on the electronic structures and spectroscopic properties
of these novel intermediates and gain mechanistic insights into their
function in biology. All of the biological oxoiron(IV) intermediates
discovered since 2003 have an S = 2 ground spin state,
while over 90% of the 60 or so synthetic oxoiron(IV) complexes reported
to date have an S = 1 ground spin state. This difference
in electronic structure has fueled an interest to more accurately
model these enzymatic intermediates and synthesize S = 2 oxoiron(IV) complexes. This Account follows up on a previous
Account (Acc. Chem.
Res. 2007, 40, 493) that provided
a perspective on the early developments in this field up to 2007 and
details our group’s efforts in the development of synthetic
strategies to obtain oxoiron(IV) complexes with an S = 2 ground state. Upon inspection of a qualitative d-orbital splitting
diagram for a d4 metal–oxo center, it becomes evident
that the key to achieving an S = 2 ground state is
to decrease the energy gap between the dx2–y2 and
dxy orbitals. Described below are two
different synthetic strategies we used to accomplish this goal. The first strategy took advantage of the realization that the dx2–y2 and dxy orbitals become
degenerate in a C3-symmetric ligand environment.
Thus, by employing bulky tripodal ligands, trigonal-bipyramidal S = 2 oxoiron(IV) complexes were obtained. However, substrate
access to the oxoiron(IV) center was hindered by the bulky ligands,
and the complexes showed limited ability to cleave substrate C–H
bonds. The second strategy entailed introducing weaker-field equatorial
ligands in six-coordinate oxoiron(IV) complexes to decrease the dx2–y2/dxy energy gap to
the point where the S = 2 ground state is favored.
These pseudo-octahedral S = 2 oxoiron(IV) complexes
exhibit high H-atom transfer reactivity relative to their S = 1 counterparts and shed light on the role that the spin
state may play in these reactions. Among these complexes is a highly
reactive species that to date represents the closest electronic and
functional model of the enzymatic intermediate, TauD-J.
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Affiliation(s)
- Mayank Puri
- Department
of Chemistry and
Center for Metals in Biocatalysis, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Lawrence Que
- Department
of Chemistry and
Center for Metals in Biocatalysis, University of Minnesota, Minneapolis, Minnesota 55455, United States
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286
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Hu H, Hu H, Zhao B, Cui P, Cheng P, Li J. Metal–Organic Frameworks (MOFs) of a Cubic Metal Cluster with Multicentered Mn
I
Mn
I
Bonds. Angew Chem Int Ed Engl 2015; 54:11681-5. [DOI: 10.1002/anie.201504758] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Revised: 07/10/2015] [Indexed: 10/23/2022]
Affiliation(s)
- Huan‐Cheng Hu
- Department of Chemistry, Key Laboratory of Advanced Energy Material Chemistry, Nankai University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071 (China)
| | - Han‐Shi Hu
- Department of Chemistry, Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084 (China)
| | - Bin Zhao
- Department of Chemistry, Key Laboratory of Advanced Energy Material Chemistry, Nankai University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071 (China)
| | - Ping Cui
- Department of Chemistry, Key Laboratory of Advanced Energy Material Chemistry, Nankai University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071 (China)
| | - Peng Cheng
- Department of Chemistry, Key Laboratory of Advanced Energy Material Chemistry, Nankai University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071 (China)
| | - Jun Li
- Department of Chemistry, Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084 (China)
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287
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Hu HC, Hu HS, Zhao B, Cui P, Cheng P, Li J. Metal-Organic Frameworks (MOFs) of a Cubic Metal Cluster with Multicentered MnIMnIBonds. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504758] [Citation(s) in RCA: 11] [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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288
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Hendon CH, Walsh A. Chemical principles underpinning the performance of the metal-organic framework HKUST-1. Chem Sci 2015; 6:3674-3683. [PMID: 28706713 PMCID: PMC5496192 DOI: 10.1039/c5sc01489a] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Accepted: 05/04/2015] [Indexed: 12/22/2022] Open
Abstract
A common feature of multi-functional metal-organic frameworks is a metal dimer in the form of a paddlewheel, as found in the structure of Cu3(btc)2 (HKUST-1). The HKUST-1 framework demonstrates exceptional gas storage, sensing and separation, catalytic activity and, in recent studies, unprecedented ionic and electrical conductivity. These results are a promising step towards the real-world application of metal-organic materials. In this perspective, we discuss progress in the understanding of the electronic, magnetic and physical properties of HKUST-1, representative of the larger family of Cu···Cu containing metal-organic frameworks. We highlight the chemical interactions that give rise to its favourable properties, and which make this material well suited to a range of technological applications. From this analysis, we postulate key design principles for tailoring novel high-performance hybrid frameworks.
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Affiliation(s)
- Christopher H Hendon
- Department of Chemistry , University of Bath , Claverton Down , Bath , BA2 7AY , UK . ; Tel: +44 (0)1225 384913
| | - Aron Walsh
- Department of Chemistry , University of Bath , Claverton Down , Bath , BA2 7AY , UK . ; Tel: +44 (0)1225 384913
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289
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Brozek CK, Miller JT, Stoian SA, Dincă M. NO Disproportionation at a Mononuclear Site-Isolated Fe2+ Center in Fe2+-MOF-5. J Am Chem Soc 2015; 137:7495-501. [DOI: 10.1021/jacs.5b03761] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Carl K. Brozek
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Jeffrey T. Miller
- Chemical
Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
- Department
of Chemical Engineering, Purdue University, 480 Stadium Mall Dr., West Lafayette, Indiana 47907, United States
| | - Sebastian A. Stoian
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, United States
| | - Mircea Dincă
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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290
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Landaeta VR, Rodríguez-Lugo RE. Catalytic oxygenation of organic substrates: Toward greener ways for incorporating oxygen. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2015.01.030] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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291
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Verma P, Vogiatzis KD, Planas N, Borycz J, Xiao DJ, Long JR, Gagliardi L, Truhlar DG. Mechanism of Oxidation of Ethane to Ethanol at Iron(IV)-Oxo Sites in Magnesium-Diluted Fe2(dobdc). J Am Chem Soc 2015; 137:5770-81. [PMID: 25882096 DOI: 10.1021/jacs.5b00382] [Citation(s) in RCA: 126] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The catalytic properties of the metal-organic framework Fe2(dobdc), containing open Fe(II) sites, include hydroxylation of phenol by pure Fe2(dobdc) and hydroxylation of ethane by its magnesium-diluted analogue, Fe0.1Mg1.9(dobdc). In earlier work, the latter reaction was proposed to occur through a redox mechanism involving the generation of an iron(IV)-oxo species, which is an intermediate that is also observed or postulated (depending on the case) in some heme and nonheme enzymes and their model complexes. In the present work, we present a detailed mechanism by which the catalytic material, Fe0.1Mg1.9(dobdc), activates the strong C-H bonds of ethane. Kohn-Sham density functional and multireference wave function calculations have been performed to characterize the electronic structure of key species. We show that the catalytic nonheme-Fe hydroxylation of the strong C-H bond of ethane proceeds by a quintet single-state σ-attack pathway after the formation of highly reactive iron-oxo intermediate. The mechanistic pathway involves three key transition states, with the highest activation barrier for the transfer of oxygen from N2O to the Fe(II) center. The uncatalyzed reaction, where nitrous oxide directly oxidizes ethane to ethanol is found to have an activation barrier of 280 kJ/mol, in contrast to 82 kJ/mol for the slowest step in the iron(IV)-oxo catalytic mechanism. The energetics of the C-H bond activation steps of ethane and methane are also compared. Dehydrogenation and dissociation pathways that can compete with the formation of ethanol were shown to involve higher barriers than the hydroxylation pathway.
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Affiliation(s)
- Pragya Verma
- †Department of Chemistry, Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455, United States.,∥Nanoporous Materials Genome Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Konstantinos D Vogiatzis
- †Department of Chemistry, Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455, United States.,∥Nanoporous Materials Genome Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Nora Planas
- †Department of Chemistry, Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455, United States.,∥Nanoporous Materials Genome Center, University of Minnesota, Minneapolis, Minnesota 55455, United States.,⊥Department of Chemistry, University of Wisconsin-Eau Claire, Eau Claire, Wisconsin 54702, United States
| | - Joshua Borycz
- †Department of Chemistry, Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455, United States.,∥Nanoporous Materials Genome Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Dianne J Xiao
- ‡Department of Chemistry, University of California, Berkeley, California 94720, United States.,∥Nanoporous Materials Genome Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Jeffrey R Long
- ‡Department of Chemistry, University of California, Berkeley, California 94720, United States.,§Materials Sciences Division, Lawrence Berkeley Laboratory, Berkeley, California 94720, United States.,∥Nanoporous Materials Genome Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Laura Gagliardi
- †Department of Chemistry, Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455, United States.,∥Nanoporous Materials Genome Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Donald G Truhlar
- †Department of Chemistry, Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455, United States.,∥Nanoporous Materials Genome Center, University of Minnesota, Minneapolis, Minnesota 55455, United States
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292
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Hirao H, Ng WKH, Moeljadi AMP, Bureekaew S. Multiscale Model for a Metal–Organic Framework: High-Spin Rebound Mechanism in the Reaction of the Oxoiron(IV) Species of Fe-MOF-74. ACS Catal 2015. [DOI: 10.1021/acscatal.5b00475] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hajime Hirao
- Division of Chemistry and
Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Wilson Kwok Hung Ng
- Division of Chemistry and
Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Adhitya Mangala Putra Moeljadi
- Division of Chemistry and
Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Sareeya Bureekaew
- Division of Chemistry and
Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
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293
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Odoh SO, Cramer CJ, Truhlar DG, Gagliardi L. Quantum-Chemical Characterization of the Properties and Reactivities of Metal–Organic Frameworks. Chem Rev 2015; 115:6051-111. [DOI: 10.1021/cr500551h] [Citation(s) in RCA: 206] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Samuel O. Odoh
- Department of Chemistry,
Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Christopher J. Cramer
- Department of Chemistry,
Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Donald G. Truhlar
- Department of Chemistry,
Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Laura Gagliardi
- Department of Chemistry,
Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
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294
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Kim T, Kim DH, Kim S, Kim YD, Bae YS, Lee CY. Low-temperature CO oxidation using a metal organic framework with unsaturated Co2+ sites. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.01.031] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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295
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Bloch ED, Queen WL, Chavan S, Wheatley PS, Zadrozny JM, Morris R, Brown CM, Lamberti C, Bordiga S, Long JR. Gradual Release of Strongly Bound Nitric Oxide from Fe2(NO)2(dobdc). J Am Chem Soc 2015; 137:3466-9. [DOI: 10.1021/ja5132243] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Eric D. Bloch
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
| | - Wendy L. Queen
- Center
of Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
- The
Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Sachin Chavan
- Department
of Chemistry, NIS, CrisDi, and INSTM Centre of Reference, University of Turin, Via Quarello 15, I-10135 Torino, Italy
| | - Paul S. Wheatley
- EaStChem
School of Chemistry, University of St Andrews, Purdie Building, St Andrews KY16 9ST, U.K
| | - Joseph M. Zadrozny
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
| | - Russell Morris
- EaStChem
School of Chemistry, University of St Andrews, Purdie Building, St Andrews KY16 9ST, U.K
| | - Craig M. Brown
- Center
of Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
- Department
of Chemical Engineering, University of Delaware, Newark, Delaware 19716, United States
- The
Bragg Institute, Australian Nuclear Science and Technology Organization, PMB1 Menai, New South Wales, Australia
| | - Carlo Lamberti
- Department
of Chemistry, NIS, CrisDi, and INSTM Centre of Reference, University of Turin, Via Quarello 15, I-10135 Torino, Italy
- Southern Federal University, Zorge
Street 5, 344090 Rostov-on-Don, Russia
| | - Silvia Bordiga
- Department
of Chemistry, NIS, CrisDi, and INSTM Centre of Reference, University of Turin, Via Quarello 15, I-10135 Torino, Italy
| | - Jeffrey R. Long
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
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296
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Gonzalez MI, Bloch ED, Mason JA, Teat SJ, Long JR. Single-crystal-to-single-crystal metalation of a metal-organic framework: a route toward structurally well-defined catalysts. Inorg Chem 2015; 54:2995-3005. [PMID: 25719803 DOI: 10.1021/acs.inorgchem.5b00096] [Citation(s) in RCA: 126] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Metal-organic frameworks featuring ligands with open chelating groups are versatile platforms for the preparation of a diverse set of heterogeneous catalysts through postsynthetic metalation. The crystalline nature of these materials allows them to be characterized via X-ray diffraction, which provides valuable insight into the structure of the metal sites that facilitate catalysis. A highly porous and thermally robust zirconium-based metal-organic framework, Zr6O4(OH)4(bpydc)6 (bpydc(2-) = 2,2'-bipyridne-5,5'-dicarboxylate), bears open bipyridine sites that readily react with a variety of solution- and gas-phase metal sources to form the corresponding metalated frameworks. Remarkably, Zr6O4(OH)4(bpydc)6 undergoes a single-crystal-to-single-crystal transformation upon metalation that involves a change in space group from Fm3̅m to Pa3̅. This structural transformation leads to an ordering of the metalated linkers within the framework, allowing structural characterization of the resulting metal complexes. Furthermore, Zr6O4(OH)4(bpydc)6 yields an active heterogeneous catalyst for arene C-H borylation when metalated with [Ir(COD)2]BF4 (COD = 1,5-cyclooctadiene). These results highlight the unique potential of metal-organic frameworks as a class of heterogeneous catalysts that allow unparalleled structural characterization and control over their active sites.
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Affiliation(s)
- Miguel I Gonzalez
- Department of Chemistry, University of California , Berkeley, California 94720, United States
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297
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Biswas AN, Puri M, Meier KK, Oloo WN, Rohde GT, Bominaar EL, Münck E, Que L. Modeling TauD-J: a high-spin nonheme oxoiron(IV) complex with high reactivity toward C-H bonds. J Am Chem Soc 2015; 137:2428-31. [PMID: 25674662 DOI: 10.1021/ja511757j] [Citation(s) in RCA: 132] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
High-spin oxoiron(IV) species are often implicated in the mechanisms of nonheme iron oxygenases, their C-H bond cleaving properties being attributed to the quintet spin state. However, the few available synthetic S = 2 Fe(IV)═O complexes supported by polydentate ligands do not cleave strong C-H bonds. Herein we report the characterization of a highly reactive S = 2 complex, [Fe(IV)(O)(TQA)(NCMe)](2+) (2) (TQA = tris(2-quinolylmethyl)amine), which oxidizes both C-H and C═C bonds at -40 °C. The oxidation of cyclohexane by 2 occurs at a rate comparable to that of the oxidation of taurine by the TauD-J enzyme intermediate after adjustment for the different temperatures of measurement. Moreover, compared with other S = 2 complexes characterized to date, the spectroscopic properties of 2 most closely resemble those of TauD-J. Together these features make 2 the best electronic and functional model for TauD-J to date.
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Affiliation(s)
- Achintesh N Biswas
- Department of Chemistry and Center for Metals in Biocatalysis, University of Minnesota , Minneapolis, Minnesota 55455, United States
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298
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Wang B, Zhou X, Wang D, Yin JJ, Chen H, Gao X, Zhang J, Ibrahim K, Chai Z, Feng W, Zhao Y. Structure and catalytic activities of ferrous centers confined on the interface between carbon nanotubes and humic acid. NANOSCALE 2015; 7:2651-2658. [PMID: 25580558 DOI: 10.1039/c4nr06665k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Preparation of heterogeneous catalysts with active ferrous centers is of great significance for industrial and environmental catalytic processes. Nanostructured carbon materials (NCM), which possess free-flowing π electrons, can coordinate with transition metals, provide a confinement environment for catalysis, and act as potential supports or ligands to construct analogous complexes. However, designing such catalysts using NCM is still seldom studied to date. Herein, we synthesized a sandwich structured ternary complex via the coordination of Fe-loaded humic acid (HA) with C=C bonds in the aromatic rings of carbon nanotubes (CNTs), in which the O/N-Fe-C interface configuration provides the confinement environment for the ferrous sites. The experimental and theoretical results revealed octahedrally/tetrahedrally coordinated geometry at Fe centers, and the strong hybridization between CNT C π* and Fe 3d orbitals induces discretization of the atomic charges on aromatic rings of CNTs, which facilitates O2 adsorption and electron transfer from carbon to O2, which enhances O2 activation. The O2 activation by the novel HA/Fe-CNT complex can be applied in the oxidative degradation of phenol red (PR) and bisphenol A (BPA) in aqueous media.
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Affiliation(s)
- Bing Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Key Laboratory of Nuclear Radiation and Nuclear Energy Technology, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
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299
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Abstract
Nitrous oxide (N2O, ‘laughing gas’) is a very inert molecule. Still, it can be used as a reagent in synthetic organic and inorganic chemistry, serving as O-atom donor, as N-atom donor, or as a oxidant in metal-catalyzed reactions.
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Affiliation(s)
- Kay Severin
- Institut des Sciences et Ingénierie Chimiques
- Ecole Polytechnique Fédérale de Lausanne (EPFL)
- 1015 Lausanne
- Switzerland
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300
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Zhong DC, Guo HB, Deng JH, Chen Q, Luo XZ. Two coordination polymers of benzene-1,2,4,5-tetracarboxylic acid (H4BTC): in situ ligand syntheses, structures, and luminescent properties. CrystEngComm 2015. [DOI: 10.1039/c5ce00461f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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