1
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Hoefler JC, Jackson D, Blümel J. Surface-Assisted Selective Air Oxidation of Phosphines Adsorbed on Activated Carbon. Inorg Chem 2024; 63:9275-9287. [PMID: 38722182 PMCID: PMC11110008 DOI: 10.1021/acs.inorgchem.4c01027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 04/24/2024] [Accepted: 04/25/2024] [Indexed: 05/21/2024]
Abstract
Trialkyl- and triarylphosphines readily adsorb onto the surface of porous activated carbon (AC) even in the absence of solvents through van der Waals interactions between the lone electron pair and the AC surface. This process has been proven by solid-state NMR techniques. Subsequently, it is demonstrated that the AC enables the fast and selective oxidation of adsorbed phosphines to phosphine oxides at ambient temperature in air. In solution, trialkylphosphines are oxidized to a variety of P(V) species when exposed to the atmosphere, while neat or dissolved triarylphosphines cannot be oxidized with air. When the trialkyl- and triarylphosphines PnBu3 (1), PEt3, (2), PnOct3 (3), PMetBu2 (4), PCy3 (5), and PPh3 (6) are adsorbed in a mono- or submonolayer on the surface of AC, in the absence of a solvent and at ambient temperature, they are quantitatively oxidized to the adsorbed phosphine oxides, 1ox-6ox, once air is admitted. No formation of any unwanted P(V) side products or water adducts is observed. The phosphine oxides can then be recovered in good yields by washing them off of the AC. The oxidation is likely facilitated by a radical activation of molecular oxygen due to delocalized electrons on the aromatic surface coating of AC, as proven by ESR. This easy and inexpensive oxidation method renders hydrogen peroxide or other oxidizers unnecessary and is broadly applicable to sterically hindered and even to air-stable triarylphosphines. Phosphines adsorbed at lower surface coverages on AC oxidize at a faster rate. All oxidation reactions were monitored by solution- and solid-state NMR spectroscopy.
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Affiliation(s)
- John C. Hoefler
- Department of Chemistry, Texas
A&M University, College Station, Texas 77845-3012, United States
| | - Devin Jackson
- Department of Chemistry, Texas
A&M University, College Station, Texas 77845-3012, United States
| | - Janet Blümel
- Department of Chemistry, Texas
A&M University, College Station, Texas 77845-3012, United States
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2
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Dey Baksi S, Aggrey JO, Bhuvanesh N, Gladysz JA. Reactions of Platinum Terminal Polyynyl Complexes trans-(C 6F 5)( p-tol 3P) 2Pt(C≡C) nH ( n = 2-4) and n-BuLi, Generation of Functional Equivalents of Pt(C≡C) nLi Species, and Derivatization with Organic and Inorganic Electrophiles. Organometallics 2024; 43:1041-1050. [PMID: 38756992 PMCID: PMC11094795 DOI: 10.1021/acs.organomet.4c00098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2024] [Revised: 04/01/2024] [Accepted: 04/09/2024] [Indexed: 05/18/2024]
Abstract
Reactions of the title complexes and n-BuLi (1.5 equiv, -45 °C) afford functional equivalents of the deprotonated species trans-(C6F5)(p-tol3P)2Pt(C≡C)nLi (n = 2-4), as assayed by subsequent additions of MeI or Me3SiCl to give trans-(C6F5)(p-tol3P)2Pt(C≡C)nMe (66-52%) or trans-(C6F5)(p-tol3P)2Pt(C≡C)nSiMe3 (63-49%). However, 31P NMR data suggest more complicated mechanistic scenarios, and small amounts of the hydride complex trans-(C6F5)(p-tol3P)2PtH (independently synthesized from the chloride complex, AgClO4, and NaBH4) are detected in most cases. Analogous sequences involving trans-(C6F5)(p-tol3P)2Pt(C≡C)2H and benzyl bromide, D2O, or W(CO)6/Me3O+ BF4- similarly afford products with Pt(C≡C)2Bn, Pt(C≡C)2D, or Pt(C≡C)2C(OCH3)=W(CO)5 linkages. The crystal structures of the tungsten and corresponding SiMe3 adduct, the three Pt(C≡C)nMe species, and hydride complex are determined.
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Affiliation(s)
- Sourajit Dey Baksi
- Department
of Chemistry, Texas A&M University, PO Box 30012, College Station, Texas 77842-3012, United States
| | - Joshua O. Aggrey
- Department
of Chemistry, East Tennessee State University, 1276 Gilbreath Drive, Johnson City, Tennessee 37614, United States
| | - Nattamai Bhuvanesh
- Department
of Chemistry, Texas A&M University, PO Box 30012, College Station, Texas 77842-3012, United States
| | - John A. Gladysz
- Department
of Chemistry, Texas A&M University, PO Box 30012, College Station, Texas 77842-3012, United States
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3
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A Lima D, Bispo-Jr AG, Galico DA, Coelho SFN, Araujo Neto JH, Ellena JA, Petiote L, Mazali IO, Sigoli FA. Tuning the Thermometric Features in 1D Luminescent Eu III and Tb III Coordination Polymers through Different Bridge Phosphine Oxide Ligands. Inorg Chem 2023; 62:6808-6816. [PMID: 37125414 DOI: 10.1021/acs.inorgchem.3c00555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
TbIII and EuIII systems have been investigated as ratiometric luminescent temperature probes in luminescent coordination polymers due to TbIII → EuIII energy transfer (ET). To help understand how ion-ion separation, chain conformation as well as excitation channel impact their thermometric properties, herein, [Eu(tfaa)3(μ-L)Tb(tfaa)3]n one-dimensional (1D) coordination polymers (tfaa- = trifluoroacetylacetonate, and L = [(diphenylphosphoryl)R](diphenyl)phosphine oxide, R = ethyl - dppeo - or butyl - dppbo) were synthesized. The short μ-dppeo bridge ligand leads to a more linear 1D polymeric chain, while the longer μ-dppbo bridge leads to tighter packed chains. As the temperature rises from 80 K, upon direct TbIII excitation at 488 nm, the TbIII emission intensity decreases, while the EuIII emission intensity increases after 160 and 200 K when L = dppeo or dppbo, respectively. The temperature-dependent emission intensities, due to TbIII → EuIII ET, enable the development of ratiometric luminescent temperature probes featuring maximum relative thermal sensitivity up to 3.8% K-1 (250 K, L = dppbo, excitation at 488 nm). On the other hand, the same system displays maximum thermal sensitivity up to 3.5% K-1 (323 K) upon ligand excitation at 300 nm. Thus, by changing the excitation channel and bridge ligand that leads to modification of the polymer conformations, the maximum relative thermal sensitivity can be tuned.
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Affiliation(s)
- Deborah A Lima
- Institute of Chemistry, State University of Campinas, Campinas, São Paulo 13083-970, Brazil
| | - Airton G Bispo-Jr
- Institute of Chemistry, State University of Campinas, Campinas, São Paulo 13083-970, Brazil
| | - Diogo A Galico
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Sergio F N Coelho
- Institute of Chemistry, State University of Campinas, Campinas, São Paulo 13083-970, Brazil
| | - João H Araujo Neto
- Institute of Physics, University of São Paulo, São Carlos, São Paulo 13566-590, Brazil
| | - Javier A Ellena
- Institute of Physics, University of São Paulo, São Carlos, São Paulo 13566-590, Brazil
| | - Lanousse Petiote
- Institute of Chemistry, State University of Campinas, Campinas, São Paulo 13083-970, Brazil
| | - Italo O Mazali
- Institute of Chemistry, State University of Campinas, Campinas, São Paulo 13083-970, Brazil
| | - Fernando A Sigoli
- Institute of Chemistry, State University of Campinas, Campinas, São Paulo 13083-970, Brazil
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4
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Feng H, Luo SXL, Croy RG, Essigmann JM, Swager TM. Interaction of N-nitrosamines with binuclear copper complexes for luminescent detection. Dalton Trans 2023; 52:3219-3233. [PMID: 36799554 PMCID: PMC9990372 DOI: 10.1039/d2dt03848j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Cu(I) from tetrakis(acetonitrile)copper(I) hexafluorophosphate ([Cu(MeCN)4]PF6) was complexed with five structurally related phosphines containing N-heterocycles. The interactions between the resulting complexes and some N-nitrosamines were studied using X-ray crystallography as well as emission spectroscopy. Upon complexation, three phosphine ligands bridge two Cu(I) centers to give paddlewheel type structures that displayed a range of emission wavelengths spanning the visible region. N-Nitrosodimethylamine (NDMA) was shown to coordinate to one of the two copper centers in some of the paddlewheel complexes in the solid state and this interaction also quenches their emissions in solution. The influence of the weakly coordinating anion on crystal and spectroscopic properties of one of the paddlewheel complexes was also examined using tetrakis(acetonitrile)copper(I) perchlorate ([Cu(MeCN)4]ClO4) as an alternative Cu(I) source. Similarly, copper(II) perchlorate hexahydrate (Cu(ClO4)2·6H2O) was used for complexation to observe the impact of metal oxidation state on the two aforementioned properties. Lastly, the spectroscopic properties of the complex between Ph2P(1-Isoquinoline) and Cu(I) was shown to exhibit solvent dependence when the counterion is ClO4-. These Cu(I) complexes are bench stable solids and may be useful materials for developing a fluorescence based detection method for N-nitrosamines.
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Affiliation(s)
- Haosheng Feng
- Institute for Soldier Nanotechnologies and Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA.
| | - Shao-Xiong Lennon Luo
- Institute for Soldier Nanotechnologies and Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA.
| | - Robert G Croy
- Department of Chemistry, Department of Biological Engineering and Center for Environmental Health Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
| | - John M Essigmann
- Department of Chemistry, Department of Biological Engineering and Center for Environmental Health Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
| | - Timothy M Swager
- Institute for Soldier Nanotechnologies and Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA.
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5
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Hersh WH, Chan TY. Improving the accuracy of 31P NMR chemical shift calculations by use of scaling methods. Beilstein J Org Chem 2023; 19:36-56. [PMID: 36726479 PMCID: PMC9843238 DOI: 10.3762/bjoc.19.4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 12/14/2022] [Indexed: 01/12/2023] Open
Abstract
Calculation of 31P NMR chemical shifts for a series of tri- and tetracoordinate phosphorus compounds using several basis sets and density functional theory (DFT) functionals gave a modest fit to experimental chemical shifts, but an excellent linear fit when plotted against the experimental values. The resultant scaling methods were then applied to a variety of "large" compounds previously selected by Latypov et al. and a set of stereoisomeric and unusual compounds selected here. No one method was best for all structural types. For compounds that contain P-P bonds and P-C multiple bonds, the Latypov et al. method using the PBE0 functional was best (mean absolute deviation/root mean square deviation (MAD/RMSD) = 6.9/8.5 ppm and 6.6/8.2 ppm, respectively), but for the full set of compounds gave higher deviations (MAD/RMSD = 8.2/12.3 ppm), and failed by over 60 ppm for a three-membered phosphorus heterocycle. Use of the M06-2X functional for both the structural optimization and NMR chemical shift calculation was best overall for the compounds without P-C multiple bonds (MAD/RMSD = 5.4/7.1 ppm), but failed by 30-49 ppm for compounds having any P-C multiple-bond character. Failures of these magnitudes have not been reported previously for these widely used functionals. These failures were then used to screen a variety of recommended functionals, leading to better overall methods for calculation of these chemical shifts: optimization with the M06-2X functional and NMR calculation with the PBE0 or ωB97x-D functionals gave values for MAD/RMSD = 6.9/8.5 ppm and 6.8/9.1 ppm, respectively, over an experimental chemical shift range of -181 to 356 ppm. Due to the unexplained failures observed, we recommend use of more than one method when looking at novel structures.
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Affiliation(s)
- William H Hersh
- Department of Chemistry and Biochemistry, Queens College, Queens, NY 11367-1597, USA,Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, New York, NY 10016, USA
| | - Tsz-Yeung Chan
- Department of Chemistry and Biochemistry, Queens College, Queens, NY 11367-1597, USA,Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, New York, NY 10016, USA
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6
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Benzie JW, Harmon-Welch GE, Hoefler JC, Bakhmutov VI, Blümel J. Molecular Dynamics and Surface Interactions of Nickelocene Adsorbed on Silica: A Paramagnetic Solid-State NMR Study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:7422-7432. [PMID: 35675156 DOI: 10.1021/acs.langmuir.2c00301] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
When grinding nickelocene with silica in the absence of a solvent at room temperature, it adsorbs on the surface within the pores. This has also been demonstrated visually by adsorbing green nickelocene in the pores of a large colorless silica gel specimen. While this dry adsorption and translational mobility of nickelocene within the pores is proven visually, the site-to-site mobility of the nickelocene molecules and their orientation toward the surface are not yet understood. In this contribution, mesoporous silica is used as the support material for a systematic solid-state NMR study of these issues. Paramagnetic 1H VT solid-state NMR and T1 relaxation times have been powerful tools for studying the dynamics of nickelocene on the silica surface. Herewith, the mobility of the surface-adsorbed nickelocene molecules in the pores could be quantified on the molecular scale. According to the obtained data, the nickelocene molecules move like a liquid on the surface. Isotropically moving molecules exchange places rapidly with surface-attached molecular states of nickelocene in a sample with submonolayer surface coverage. This finding is corroborated by a macroscopic visualization experiment. The states of the surface-attached horizontally oriented nickelocene molecules that are prevalent at temperatures below 200 K have been quantified. The temperature dependencies of the rate k in coordinates of ln(k) versus 1/T and ln(k/T) versus 1/T form ideal straight lines that allow the determination of the kinetic parameters Eact = 5.5 kcal/mol, A = 1.1 × 1010, ΔH‡ = 5.0 kcal/mol, and ΔS‡ = -15 eu. Investigating a sample with equal amounts of nickelocene and ferrocene in a submonolayer amount of 80% overall surface coverage shows that the different metallocenes mix on the molecular level on the silica surface.
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Affiliation(s)
- Jordon W Benzie
- Department of Chemistry, Texas A&M University, College Station, Texas 77845-3012, United States
| | | | - John C Hoefler
- Department of Chemistry, Texas A&M University, College Station, Texas 77845-3012, United States
| | - Vladimir I Bakhmutov
- Department of Chemistry, Texas A&M University, College Station, Texas 77845-3012, United States
| | - Janet Blümel
- Department of Chemistry, Texas A&M University, College Station, Texas 77845-3012, United States
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7
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Copper complex featuring Cation-Excess alternation counterion catalyzing Mukaiyama-Aldol reaction of ketene silyl acetals and ketones. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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8
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Vener MV, Churakov AV, Voronin AP, Parashchuk OD, Artobolevskii SV, Alatortsev OA, Makhrov DE, Medvedev AG, Filarowski A. Comparison of Proton Acceptor and Proton Donor Properties of H 2O and H 2O 2 in Organic Crystals of Drug-like Compounds: Peroxosolvates vs. Crystallohydrates. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27030717. [PMID: 35163982 PMCID: PMC8838768 DOI: 10.3390/molecules27030717] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 01/16/2022] [Accepted: 01/19/2022] [Indexed: 01/01/2023]
Abstract
Two new peroxosolvates of drug-like compounds were synthesized and studied by a combination of X-ray crystallographic, Raman spectroscopic methods, and periodic DFT computations. The enthalpies of H-bonds formed by hydrogen peroxide (H2O2) as a donor and an acceptor of protons were compared with the enthalpies of analogous H-bonds formed by water (H2O) in isomorphic (isostructural) hydrates. The enthalpies of H-bonds formed by H2O2 as a proton donor turned out to be higher than the values of the corresponding H-bonds formed by H2O. In the case of H2O2 as a proton acceptor in H-bonds, the ratio appeared reversed. The neutral O∙∙∙H-O/O∙∙∙H-N bonds formed by the lone electron pair of the oxygen atom of water were the strongest H-bonds in the considered crystals. In the paper, it was found out that the low-frequency Raman spectra of isomorphous crystalline hydrate and peroxosolvate of N-(5-Nitro-2-furfurylidene)-1-aminohydantoin are similar. As for the isostructural hydrate and peroxosolvate of the salt of protonated 2-amino-nicotinic acid and maleic acid monoanion, the Raman spectra are different.
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Affiliation(s)
- Mikhail V. Vener
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii Prosp. 31, 119991 Moscow, Russia; (A.V.C.); (A.G.M.)
- Correspondence: (M.V.V.); (A.F.)
| | - Andrei V. Churakov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii Prosp. 31, 119991 Moscow, Russia; (A.V.C.); (A.G.M.)
| | | | - Olga D. Parashchuk
- Faculty of Physics, Lomonosov Moscow State University, 119991 Moscow, Russia;
| | - Sergei V. Artobolevskii
- Faculty of Natural Science, Mendeleev University of Chemical Technology, Miusskaya Square 9, 125047 Moscow, Russia; (S.V.A.); (O.A.A.); (D.E.M.)
| | - Oleg A. Alatortsev
- Faculty of Natural Science, Mendeleev University of Chemical Technology, Miusskaya Square 9, 125047 Moscow, Russia; (S.V.A.); (O.A.A.); (D.E.M.)
| | - Denis E. Makhrov
- Faculty of Natural Science, Mendeleev University of Chemical Technology, Miusskaya Square 9, 125047 Moscow, Russia; (S.V.A.); (O.A.A.); (D.E.M.)
| | - Alexander G. Medvedev
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii Prosp. 31, 119991 Moscow, Russia; (A.V.C.); (A.G.M.)
| | - Aleksander Filarowski
- Faculty of Chemistry, University of Wrocław 14 F. Joliot-Curie Str., 50-383 Wrocław, Poland
- Correspondence: (M.V.V.); (A.F.)
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9
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Kinetic Resolution in Transannular Morita-Baylis-Hillman Reaction: An Approximation to the Synthesis of Sesquiterpenes from Guaiane Family. Catalysts 2022. [DOI: 10.3390/catal12010067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
An approximation to the synthesis of several sesquiterpenes from the Guaiane family is described in which the core structure was obtained through a transannular Morita-Baylis-Hillman reaction performed under kinetic resolution. Several manipulations of the obtained MBH adduct have been carried out directed towards the total synthesis of γ-Gurjunene, to the formal synthesis of Clavukerin A, to the synthesis of a non-natural isomer of isoguaiane and to the synthesis of an advanced intermediate in the total synthesis of Palustrol.
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10
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Kostin MA, Pylaeva S, Tolstoy P. Phosphine oxides as NMR and IR spectroscopic probes for geometry and energy of PO···H–A hydrogen bonds. Phys Chem Chem Phys 2022; 24:7121-7133. [DOI: 10.1039/d1cp05939d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work we evaluate the possibility to use the NMR and IR spectral properties of P=O group to estimate the geometry and strength of hydrogen bonds which it forms...
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11
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Zhang Y, Duan W, Yang Y, Jian T, Qiao Y, Ren G, Zhang N, Zheng L, Yan W, Wang J, Chen J, Minasian SG, Sun T. Involvement of 5f Orbitals in the Covalent Bonding between the Uranyl Ion and Trialkyl Phosphine Oxide: Unraveled by Oxygen K-Edge X-ray Absorption Spectroscopy and Density Functional Theory. Inorg Chem 2021; 61:92-104. [PMID: 34817979 DOI: 10.1021/acs.inorgchem.1c02236] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Monodentate organophosphorus ligands have been used for the extraction of the uranyl ion (UO22+) for over half a century and have exhibited exceptional extractability and selectivity toward the uranyl ion due to the presence of the phosphoryl group (O═P). Tributyl phosphate (TBP) is the extractant of the world-renowned PUREX process, which selectively recovers uranium from spent nuclear fuel. Trialkyl phosphine oxide (TRPO) shows extractability toward the uranyl ion that far exceeds that for other metal ions, and it has been used in the TRPO process. To date, however, the mechanism of the high affinity of the phosphoryl group for UO22+ remains elusive. We herein investigate the bonding covalency in a series of complexes of UO22+ with TRPO by oxygen K-edge X-ray absorption spectroscopy (XAS) in combination with density functional theory (DFT) calculations. Four TRPO ligands with different R substituents are examined in this work, for which both the ligands and their uranyl complexes are crystallized and investigated. The study of the electronic structure of the TRPO ligands reveals that the two TRPO molecules, irrespective of their substituents, can engage in σ- and π-type interactions with U 5f and 6d orbitals in the UO2Cl2(TRPO)2 complexes. Although both the axial (Oyl) and equatorial (Oeq) oxygen atoms in the UO2Cl2(TRPO)2 complexes contribute to the X-ray absorption, the first pre-edge feature in the O K-edge XAS with a small intensity is exclusively contributed by Oeq and is assigned to the transition from Oeq 1s orbitals to the unoccupied molecular orbitals of 1b1u + 1b2u + 1b3u symmetries resulting from the σ- and π-type mixing between U 5f and Oeq 2p orbitals. The small intensity in the experimental spectra is consistent with the small amount of Oeq 2p character in these orbitals for the four UO2Cl2(TRPO)2 complexes as obtained by Mulliken population analysis. The DFT calculations demonstrate that the U 6d orbitals are also involved in the U-TRPO bonding interactions in the UO2Cl2(TRPO)2 complexes. The covalent bonding interactions between TRPO and UO22+, especially the contributions from U 5f orbitals, while appearing to be small, are sufficiently responsible for the exceptional extractability and selectivity of monodentate organophosphorus ligands for the uranyl ion. Our results provide valuable insight into the fundamental actinide chemistry and are expected to directly guide actinide separation schemes needed for the development of advanced nuclear fuel cycle technologies.
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Affiliation(s)
- Yusheng Zhang
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
| | - Wuhua Duan
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
| | - Yuning Yang
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
| | - Tian Jian
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Yusen Qiao
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Guoxi Ren
- Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China
| | - Nian Zhang
- Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China
| | - Lei Zheng
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Wensheng Yan
- University of Science and Technology of China, National Synchrotron Radiation Laboratory, Hefei 230029, China
| | - Jianchen Wang
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
| | - Jing Chen
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
| | - Stefan G Minasian
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Taoxiang Sun
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
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12
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Arp FF, Ashirov R, Bhuvanesh N, Blümel J. Di(hydroperoxy)adamantane adducts: synthesis, characterization and application as oxidizers for the direct esterification of aldehydes. Dalton Trans 2021; 50:15296-15309. [PMID: 34636381 DOI: 10.1039/d1dt03243g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The di(hydroperoxy)adamantane adducts of water (1) and phosphine oxides p-Tol3PO·(HOO)2C(C9H14) (2), o-Tol3PO·(HOO)2C(C9H14) (3), and Cy3PO·(HOO)2C(C9H14) (4), as well as a CH2Cl2 adduct of a phosphole oxide dimer (8), have been created and investigated by multinuclear NMR spectroscopy, and by Raman and IR spectroscopy. The single crystal X-ray structures for 1-4 and 8 are reported. The IR and 31P NMR data are in accordance with strong hydrogen bonding of the di(hydroperoxy)adamantane adducts. The Raman ν(O-O) stretching bands of 1-4 prove that the peroxo groups are present in the solids. Selected di(hydroperoxy)alkane adducts, in combination with AlCl3 as catalyst, have been applied for the direct oxidative esterification of n-nonyl aldehyde, benzaldehyde, p-methylbenzaldehyde, p-bromobenzaldehyde, and o-hydroxybenzaldehyde to the corresponding methyl esters. The esterification takes place in an inert atmosphere, under anhydrous and oxygen-free conditions, within a time frame of 45 minutes to 5 hours at room temperature. Hereby, two oxygen atoms per adduct assembly are active with respect to the quantitative transformation of the aldehyde into the ester.
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Affiliation(s)
- Fabian F Arp
- Department of Chemistry, Texas A&M University, College Station, TX, 77842-3012, USA.
| | - Rahym Ashirov
- Department of Chemistry, Texas A&M University, College Station, TX, 77842-3012, USA.
| | - Nattamai Bhuvanesh
- Department of Chemistry, Texas A&M University, College Station, TX, 77842-3012, USA.
| | - Janet Blümel
- Department of Chemistry, Texas A&M University, College Station, TX, 77842-3012, USA.
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13
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Ebeid K, Ebnou F, M'haiham M, Carpenter-Warren C, Slawin A, Woollins J, Ben Dhia M, Barry A, Sanhoury M. Synthesis and structural characterization of Zn2+, Cd2+ and Hg2+ complexes with tripyrrolidinophosphine chalcogenides. J COORD CHEM 2021. [DOI: 10.1080/00958972.2021.1984436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Khaled Ebeid
- Materials Chemistry Research Unit, Faculty of Sciences and Techniques, UNA, Nouakchott, Mauritania
| | - F. Ebnou
- Materials Chemistry Research Unit, Faculty of Sciences and Techniques, UNA, Nouakchott, Mauritania
| | - M. M'haiham
- Materials Chemistry Research Unit, Faculty of Sciences and Techniques, UNA, Nouakchott, Mauritania
| | | | - A.M.Z. Slawin
- EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews, UK
| | - J.D. Woollins
- EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews, UK
- Department of Chemistry, Khalifa University, Abu Dhabi, United Arab Emirates
| | - M.T. Ben Dhia
- Department of Chemistry, Laboratory of Structural Organic Chemistry: Synthesis and Physicochemical Studies, Coordination Chemistry Group, Faculty of Sciences of Tunis, El Manar University, Tunis, Tunisia
| | - A.H. Barry
- Materials Chemistry Research Unit, Faculty of Sciences and Techniques, UNA, Nouakchott, Mauritania
| | - M.A.K. Sanhoury
- Materials Chemistry Research Unit, Faculty of Sciences and Techniques, UNA, Nouakchott, Mauritania
- Department of Chemistry, Laboratory of Structural Organic Chemistry: Synthesis and Physicochemical Studies, Coordination Chemistry Group, Faculty of Sciences of Tunis, El Manar University, Tunis, Tunisia
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14
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Almazahreh LR, Arrigoni F, Abul-Futouh H, El-khateeb M, Görls H, Elleouet C, Schollhammer P, Bertini L, De Gioia L, Rudolph M, Zampella G, Weigand W. Proton Shuttle Mediated by (SCH 2) 2P═O Moiety in [FeFe]-Hydrogenase Mimics: Electrochemical and DFT Studies. ACS Catal 2021. [DOI: 10.1021/acscatal.0c05563] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Laith R. Almazahreh
- ERCOSPLAN Ingenieurbüro Anlagentechnik GmbH Arnstädter Straße 28, 99096 Erfurt, Germany
- Institut für Anorganische und Analytische Chemie, Friedrich-Schiller-Universität Jena, Humboldt Str. 8, 07743 Jena, Germany
| | - Federica Arrigoni
- Department of Biotechnology and Biosciences, University of Milano - Bicocca, Piazza della Scienza 2, 20126 Milan, Italy
| | - Hassan Abul-Futouh
- Department of Pharmacy, Al-Zaytoonah University of Jordan, P.O. Box 130 Amman 11733 Jordan
| | - Mohammad El-khateeb
- Chemistry Department, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Helmar Görls
- Institut für Anorganische und Analytische Chemie, Friedrich-Schiller-Universität Jena, Humboldt Str. 8, 07743 Jena, Germany
| | - Catherine Elleouet
- UMR CNRS 6521, Chimie, Electrochimie Moléculaires et Chimie Analytique, Université de Bretagne Occidentale, UFR Sciences et Techniques, Cs 93837, 29238 CEDEX 3 Brest, France
| | - Philippe Schollhammer
- UMR CNRS 6521, Chimie, Electrochimie Moléculaires et Chimie Analytique, Université de Bretagne Occidentale, UFR Sciences et Techniques, Cs 93837, 29238 CEDEX 3 Brest, France
| | - Luca Bertini
- Department of Biotechnology and Biosciences, University of Milano - Bicocca, Piazza della Scienza 2, 20126 Milan, Italy
| | - Luca De Gioia
- Department of Biotechnology and Biosciences, University of Milano - Bicocca, Piazza della Scienza 2, 20126 Milan, Italy
| | - Manfred Rudolph
- Institut für Anorganische und Analytische Chemie, Friedrich-Schiller-Universität Jena, Humboldt Str. 8, 07743 Jena, Germany
| | - Giuseppe Zampella
- Department of Biotechnology and Biosciences, University of Milano - Bicocca, Piazza della Scienza 2, 20126 Milan, Italy
| | - Wolfgang Weigand
- Institut für Anorganische und Analytische Chemie, Friedrich-Schiller-Universität Jena, Humboldt Str. 8, 07743 Jena, Germany
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15
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Łastawiecka E, Frynas S, Pietrusiewicz KM. Desymmetrization Approach to the Synthesis of Optically Active P-Stereogenic Phosphin-2-en-4-ones. J Org Chem 2021; 86:6195-6206. [PMID: 33900770 PMCID: PMC8279496 DOI: 10.1021/acs.joc.0c03055] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Two synthetic protocols for the conversion of 1-phenylphosphinan-4-ones to novel P-stereogenic 1-phenylphosphin-2-en-4-ones by enantioselective deprotonation followed by oxidation and by asymmetric organocatalytic halogenation accompanied by elimination have been developed. These two-step one-pot transformations provide convenient access to optically active 1-phenylphosphin-2-en-4-one 1-sulfide and 1-phenylphosphin-2-en-4-one 1-oxide of 96 and 55% enantiomeric purities, respectively.
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Affiliation(s)
- Elżbieta Łastawiecka
- Department of Organic Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Marie Curie-Sklodowska University, Gliniana 33 St., 20-614 Lublin, Poland
| | - Sławomir Frynas
- Department of Organic Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Marie Curie-Sklodowska University, Gliniana 33 St., 20-614 Lublin, Poland
| | - K Michał Pietrusiewicz
- Department of Organic Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Marie Curie-Sklodowska University, Gliniana 33 St., 20-614 Lublin, Poland
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16
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Actual Symmetry of Symmetric Molecular Adducts in the Gas Phase, Solution and in the Solid State. Symmetry (Basel) 2021. [DOI: 10.3390/sym13050756] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
This review discusses molecular adducts, whose composition allows a symmetric structure. Such adducts are popular model systems, as they are useful for analyzing the effect of structure on the property selected for study since they allow one to reduce the number of parameters. The main objectives of this discussion are to evaluate the influence of the surroundings on the symmetry of these adducts, steric hindrances within the adducts, competition between different noncovalent interactions responsible for stabilizing the adducts, and experimental methods that can be used to study the symmetry at different time scales. This review considers the following central binding units: hydrogen (proton), halogen (anion), metal (cation), water (hydrogen peroxide).
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17
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Yamaguchi R, Tanaka R, Maetani M, Tabe H, Yamada Y. Efficient capturing of hydrogen peroxide in dilute aqueous solution by co-crystallization with amino acids. CrystEngComm 2021. [DOI: 10.1039/d1ce00688f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
X-ray structure analyses of co-crystals of H2O2 and l-Phe, dl-Phe, or dl-Asp prepared in a dilute aqueous solution (30 wt%) indicated that multi-layer motifs including water molecule is important for highly efficient H2O2 capture in dilute solutions.
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Affiliation(s)
- Ryota Yamaguchi
- Department of Applied Chemistry and Bioengineering, Graduate School of Engineering, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
| | - Rika Tanaka
- Department of Applied Chemistry and Bioengineering, Graduate School of Engineering, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
- Analytical Center of Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
| | - Mayu Maetani
- Department of Applied Chemistry and Bioengineering, Graduate School of Engineering, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
| | - Hiroyasu Tabe
- Department of Applied Chemistry and Bioengineering, Graduate School of Engineering, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
- Research Center for Artificial Photosynthesis (ReCAP), Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
| | - Yusuke Yamada
- Department of Applied Chemistry and Bioengineering, Graduate School of Engineering, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
- Research Center for Artificial Photosynthesis (ReCAP), Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
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18
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Medvedev AG, Churakov AV, Prikhodchenko PV, Lev O, Vener MV. Crystalline Peroxosolvates: Nature of the Coformer, Hydrogen-Bonded Networks and Clusters, Intermolecular Interactions. Molecules 2020; 26:E26. [PMID: 33374602 PMCID: PMC7793138 DOI: 10.3390/molecules26010026] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 12/19/2020] [Accepted: 12/19/2020] [Indexed: 01/22/2023] Open
Abstract
Despite the technological importance of urea perhydrate (percarbamide) and sodium percarbonate, and the growing technological attention to solid forms of peroxide, fewer than 45 peroxosolvates were known by 2000. However, recent advances in X-ray diffractometers more than tripled the number of structurally characterized peroxosolvates over the last 20 years, and even more so, allowed energetic interpretation and gleaning deeper insight into peroxosolvate stability. To date, 134 crystalline peroxosolvates have been structurally resolved providing sufficient insight to justify a first review article on the subject. In the first chapter of the review, a comprehensive analysis of the structural databases is carried out revealing the nature of the co-former in crystalline peroxosolvates. In the majority of cases, the coformers can be classified into three groups: (1) salts of inorganic and carboxylic acids; (2) amino acids, peptides, and related zwitterions; and (3) molecular compounds with a lone electron pair on nitrogen and/or oxygen atoms. The second chapter of the review is devoted to H-bonding in peroxosolvates. The database search and energy statistics revealed the importance of intermolecular hydrogen bonds (H-bonds) which play a structure-directing role in the considered crystals. H2O2 always forms two H-bonds as a proton donor, the energy of which is higher than the energy of analogous H-bonds existing in isostructural crystalline hydrates. This phenomenon is due to the higher acidity of H2O2 compared to water and the conformational mobility of H2O2. The dihedral angle H-O-O-H varies from 20 to 180° in crystalline peroxosolvates. As a result, infinite H-bonded 1D chain clusters are formed, consisting of H2O2 molecules, H2O2 and water molecules, and H2O2 and halogen anions. H2O2 can form up to four H-bonds as a proton acceptor. The third chapter of the review is devoted to energetic computations and in particular density functional theory with periodic boundary conditions. The approaches are considered in detail, allowing one to obtain the H-bond energies in crystals. DFT computations provide deeper insight into the stability of peroxosolvates and explain why percarbamide and sodium percarbonate are stable to H2O2/H2O isomorphic transformations. The review ends with a description of the main modern trends in the synthesis of crystalline peroxosolvates, in particular, the production of peroxosolvates of high-energy compounds and mixed pharmaceutical forms with antiseptic and analgesic effects.
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Affiliation(s)
- Alexander G. Medvedev
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii Prosp. 31, 119991 Moscow, Russia; (A.G.M.); (A.V.C.); (P.V.P.)
| | - Andrei V. Churakov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii Prosp. 31, 119991 Moscow, Russia; (A.G.M.); (A.V.C.); (P.V.P.)
| | - Petr V. Prikhodchenko
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii Prosp. 31, 119991 Moscow, Russia; (A.G.M.); (A.V.C.); (P.V.P.)
| | - Ovadia Lev
- The Casali Center of Applied Chemistry, The Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Mikhail V. Vener
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii Prosp. 31, 119991 Moscow, Russia; (A.G.M.); (A.V.C.); (P.V.P.)
- Department of Quantum Chemistry, Mendeleev University of Chemical Technology, Miusskaya Square 9, 125047 Moscow, Russia
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19
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Sinclair MJ, Chaplin AB. Oxidative ring expansion of a low-coordinate palladacycle: Synthesis of a robust T-shaped alkylpalladium(II) complex. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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20
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Zimmerman AN, Xu RS, Reynolds SC, Shipp CA, Marshall DJ, Wang G, Blank NF, Gibbons SK, Hughes RP, Glueck DS, Balaich GJ, Rheingold AL. Diastereoselective Synthesis of P-Stereogenic Secondary Phosphine Oxides (SPOs) Bearing a Chiral Substituent by Ring Opening of (+)-Limonene Oxide with Primary Phosphido Nucleophiles. J Org Chem 2020; 85:14516-14526. [PMID: 32627554 DOI: 10.1021/acs.joc.0c00974] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Kinetic separation of the commercially available cis/trans-(+)-limonene oxide mixture by ring opening with primary phosphido nucleophiles LiPHR (R = ferrocenyl, Ph, Cy, t-Bu, Mes* (Mes* = 2,4,6-(t-Bu)3C6H2)), followed by treatment with aqueous NH4Cl and H2O2, gave unreacted cis-(+)-limonene oxide and diastereoenriched mixtures of the secondary phosphine oxides (SPOs) PHR(trans-(+)-Lim-OH)(O), which could be separated by chromatography and/or recrystallization. This one-pot synthesis uses a cheap chiral material and commercially available primary phosphines to control the configuration of the new P-stereogenic SPOs, which are potentially useful as ligands for metal complexes in asymmetric catalysis.
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Affiliation(s)
- Amber N Zimmerman
- 6128 Burke Laboratory, Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Rebecca S Xu
- 6128 Burke Laboratory, Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Samantha C Reynolds
- 6128 Burke Laboratory, Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Chase A Shipp
- 6128 Burke Laboratory, Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Derrick J Marshall
- 6128 Burke Laboratory, Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Ge Wang
- 6128 Burke Laboratory, Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Natalia F Blank
- 6128 Burke Laboratory, Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, United States.,Department of Chemistry, Norwich University, 158 Harmon Drive, Northfield, Vermont 05663, United States
| | - Sarah K Gibbons
- 6128 Burke Laboratory, Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Russell P Hughes
- 6128 Burke Laboratory, Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - David S Glueck
- 6128 Burke Laboratory, Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Gary J Balaich
- Department of Chemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Arnold L Rheingold
- Department of Chemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
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21
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Shenderovich IG. For Whom a Puddle Is the Sea? Adsorption of Organic Guests on Hydrated MCM-41 Silica. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:11383-11392. [PMID: 32900200 DOI: 10.1021/acs.langmuir.0c02327] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Thermal and hydration effects on the mobility of compact and branched organic molecules and a bulky pharmaceutical substance loaded in submonolayer amounts onto mesoporous silica have been elucidated using 1H and 31P solid-state NMR. In all cases, the ambient hydration has a stronger effect than an increase in temperature to 370 K for water-free silica. The effect of hydration depends on the guest and ranges from complete solvation to a silica-water-guest sandwich structure to a silica-guest/silica-water pattern. The mobility of the guests under different conditions has been described. The specific structure of the MCM-41 surface allows one to study very slow surface diffusion, a diffusivity of about 10-15-10-16 m2/s. The data reported are relevant to any nonfunctionalized silica, while the method used is applicable to any phosphor-containing guest on any host.
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Affiliation(s)
- Ilya G Shenderovich
- Institute of Organic Chemistry, University of Regensburg, Universitaetstrasse 31, 93053 Regensburg, Germany
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22
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Arp FF, Bhuvanesh N, Blümel J. Di(hydroperoxy)cycloalkane Adducts of Triarylphosphine Oxides: A Comprehensive Study Including Solid-State Structures and Association in Solution. Inorg Chem 2020; 59:13719-13732. [PMID: 32866378 DOI: 10.1021/acs.inorgchem.0c02087] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Four new di(hydroperoxy)cycloalkane adducts (Ahn adducts) of p-Tol3PO (1) and o-Tol3PO (2), namely, p-Tol3PO·(HOO)2C(CH2)5 (3), o-Tol3PO·(HOO)2C(CH2)5 (4), p-Tol3PO·(HOO)2C(CH2)6 (5), and o-Tol3PO·(HOO)2C(CH2)6 (6), have been synthesized and fully characterized. Their single crystal X-ray structures have been determined and analyzed. The 31P NMR data are in accordance with hydrogen bonding of the di(hydroperoxy)alkanes to the P═O groups of the phosphine oxides. Due to their high solubility in organic solvents, natural abundance 17O NMR spectra of 1-6 could be recorded, providing the signals for the P═O groups and additionally the two different oxygen nuclei in the O-OH groups in the adducts 3-6. The association and mobility of 3-6 were explored by 1H DOSY (diffusion ordered spectroscopy) NMR, which indicated persistent hydrogen bonding of the adducts in solution. Competition experiments with phosphine oxides allowed ranking of the affinities of the di(hydroperoxy)cycloalkanes for the different phosphine oxide carriers. On the basis of variable temperature 31P NMR investigations, the Gibbs energies of activation ΔG‡ for the adduct dissociation processes of 3-6 at different temperatures, as well as the enthalpy ΔH‡ and entropy ΔS‡ of activation, have been determined. IR spectroscopy of 3-6 corroborated the hydrogen bonding, and in the Raman spectra, the ν(O-O) stretching bands have been identified, confirming the presence of peroxy groups in the solid materials. The high solubilities in selected organic solvents have been quantified.
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Affiliation(s)
- Fabian F Arp
- Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012, United States
| | - Nattamai Bhuvanesh
- Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012, United States
| | - Janet Blümel
- Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012, United States
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23
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Hubbard PJ, Benzie JW, Bakhmutov VI, Blümel J. Ferrocene Adsorbed on Silica and Activated Carbon Surfaces: A Solid-State NMR Study of Molecular Dynamics and Surface Interactions. Organometallics 2020. [DOI: 10.1021/acs.organomet.9b00800] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Patrick J. Hubbard
- Department of Chemistry, Texas A&M University, College Station, Texas 77845-3012, United States
| | - Jordon W. Benzie
- Department of Chemistry, Texas A&M University, College Station, Texas 77845-3012, United States
| | - Vladimir I. Bakhmutov
- Department of Chemistry, Texas A&M University, College Station, Texas 77845-3012, United States
| | - Janet Blümel
- Department of Chemistry, Texas A&M University, College Station, Texas 77845-3012, United States
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24
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Leforestier B, Gyton MR, Chaplin AB. Synthesis and group 9 complexes of macrocyclic PCP and POCOP pincer ligands. Dalton Trans 2020; 49:2087-2101. [PMID: 32031194 DOI: 10.1039/c9dt04835a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The synthesis of macrocyclic variants of commonly employed phosphine-based pincer (pro)ligands derived from meta-xylene (PCP-14) and resorcinol (POCOP-14) is described, where the P-donors are trans-substituted with a tetradecamethylene linker. The former was accomplished using a seven-step asymmetric procedure involving (-)-cis-1-amino-2-indanol as a chiral auxiliary and ring-closing olefin metathesis. A related, but non-diastereoselective route was employed for the latter, which consequently necessitated chromatographic separation from the cis-substituted by-product. The proligands are readily metalated and homologous series of MI(CO) and MIIICl2(CO) derivatives (M = Rh, Ir) have been isolated and fully characterised in solution and the solid state. Metal hydride complexes are generated during the synthesis of the former and have been characterised in situ using NMR spectroscopy.
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Affiliation(s)
- Baptiste Leforestier
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK.
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25
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Hubbard PJ, Benzie JW, Bakhmutov VI, Blümel J. Disentangling different modes of mobility for triphenylphosphine oxide adsorbed on alumina. J Chem Phys 2020; 152:054718. [PMID: 32035468 DOI: 10.1063/1.5142568] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Triphenylphosphine oxide (TPPO, 1) has been adsorbed on neutral alumina by dry grinding of the components in the absence of a solvent. The adsorption proves translational mobility of 1 on the surface of alumina. Different surface coverages from a densely packed monolayer (99% coverage) to a dilute sub-monolayer (25%) have been produced. The samples have been studied by diverse multinuclear 1H, 13C, and 31P variable temperature solid-state nuclear magnetic resonance (NMR) techniques. The interactions of 1 with the surface are determined by hydrogen bonding of the P=O group to OH groups on the surface. The 31P solid-state NMR spectra prove that even at low temperatures, the molecules of 1 are highly mobile on the surface. Using T1 and T2 relaxation time analyses of the 31P resonance in the solid state at variable temperatures allowed the identification and quantification of two different modes of mobility. Besides the translational mobility that consists of jumps from one hydrogen-bonding OH site on the surface to an adjacent one, a rotational movement around the axis defined by the P=O group of 1 occurs.
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Affiliation(s)
- Patrick J Hubbard
- Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012, USA
| | - Jordon W Benzie
- Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012, USA
| | - Vladimir I Bakhmutov
- Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012, USA
| | - Janet Blümel
- Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012, USA
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26
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M’haiham M, Ebeid K, Ebnou F, Carpenter-Warren CL, Slawin AMZ, Woollins JD, Ben Dhia MT, Sanhoury MAK. Synthesis, characterization, and structures of zinc(II) and cadmium(II) complexes with phosphoramides bearing cyclic amino groups. J COORD CHEM 2020. [DOI: 10.1080/00958972.2020.1731485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Mohamed M’haiham
- Department of Chemistry, Research Unit in Materials Chemistry, Faculty of Sciences and Techniques, UNA, Nouakchott, Mauritania
- Laboratory of Structural Organic Chemistry: Synthesis and Physicochemical Studies, Department of Chemistry, Faculty of Sciences of Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Khaled Ebeid
- Department of Chemistry, Research Unit in Materials Chemistry, Faculty of Sciences and Techniques, UNA, Nouakchott, Mauritania
| | - Fatimetou Ebnou
- Department of Chemistry, Research Unit in Materials Chemistry, Faculty of Sciences and Techniques, UNA, Nouakchott, Mauritania
| | | | | | | | - Med Taieb Ben Dhia
- Laboratory of Structural Organic Chemistry: Synthesis and Physicochemical Studies, Department of Chemistry, Faculty of Sciences of Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Med Abderrahmane K. Sanhoury
- Department of Chemistry, Research Unit in Materials Chemistry, Faculty of Sciences and Techniques, UNA, Nouakchott, Mauritania
- Laboratory of Structural Organic Chemistry: Synthesis and Physicochemical Studies, Department of Chemistry, Faculty of Sciences of Tunis, University of Tunis El Manar, Tunis, Tunisia
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27
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Structures of the oxidized states of some common biochemical reducing agents. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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28
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Guenther J, Reibenspies J, Blümel J. Synthesis and characterization of tridentate phosphine ligands incorporating long methylene chains and ethoxysilane groups for immobilizing molecular rhodium catalysts. MOLECULAR CATALYSIS 2019. [DOI: 10.1016/j.mcat.2019.110629] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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29
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Arp FF, Bhuvanesh N, Blümel J. Hydrogen peroxide adducts of triarylphosphine oxides. Dalton Trans 2019; 48:14312-14325. [PMID: 31475705 DOI: 10.1039/c9dt03070k] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Five new hydrogen peroxide adducts of phosphine oxides (p-Tol3PO·H2O2)2 (1), (o-Tol3PO·H2O2)2 (2), (o-Tol2PhPO·H2O2)2 (3), (p-Tol3PO)2·H2O2 (4), and (o-TolPh2PO)2·H2O2 (5), and the water adduct (o-Tol2PhPO·H2O)2 (6) have been synthesized and fully characterized. Their single crystal X-ray structures have been determined and analyzed. The IR and 31P NMR data are in accordance with strong hydrogen bonding of the hydrogen peroxide. The mono- versus dimeric nature of the adduct assemblies has been investigated by DOSY NMR experiments. Raman spectroscopy of the symmetric adducts and the ν(O-O) stretching bands confirm the presence of hydrogen-bonded hydrogen peroxide in the solid materials. The solubilities in organic solvents have been quantified. Due to the high solubilities of 1-6 in organic solvents their 17O NMR spectra could be recorded in natural abundance, providing well-resolved signals for the P[double bond, length as m-dash]O and O-O groups. The adducts 1-5 have been probed regarding their stability in solution at 105 °C. The decomposition of the adduct 1 takes place by loss of the active oxygen atoms in two steps.
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Affiliation(s)
- Fabian F Arp
- Department of Chemistry, Texas A&M University, College Station, TX 77842-3012, USA.
| | - Nattamai Bhuvanesh
- Department of Chemistry, Texas A&M University, College Station, TX 77842-3012, USA.
| | - Janet Blümel
- Department of Chemistry, Texas A&M University, College Station, TX 77842-3012, USA.
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Kharel S, Cluff KJ, Bhuvanesh N, Gladysz JA, Blümel J. Structures and Dynamics of Secondary and Tertiary Alkylphosphine Oxides Adsorbed on Silica. Chem Asian J 2019; 14:2704-2711. [PMID: 31168965 DOI: 10.1002/asia.201900632] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Indexed: 11/12/2022]
Abstract
The three secondary phosphine oxides [CH2 =CH(CH2 )4 ]2 HPO (1), [CH2 =CH(CH2 )5 ]2 HPO (2), and [CH2 =CH(CH2 )6 ]2 HPO (3), and two diphosphine dioxides, {[CH2 =CH(CH2 )6 ]2 PO(CH2 )7 }2 (4) and {[CH2 =CH(CH2 )6 ]2 PO(CH2 )4 }2 (5), incorporating long methylene chains, are described. The single crystal X-ray structures of 1, 2, and 5 have been determined. The phosphine oxides 3, 4, and 5 have been adsorbed on silica in submonolayer quantities to give 3 a-5 a. The 1 H, 13 C, and 31 P solid-state NMR spectra of polycrystalline 3-5 have been analyzed and compared with those of 3 a-5 a. The changes of the solid-state NMR characteristics upon adsorption and the surface mobilities of the phosphine oxides are discussed.
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Affiliation(s)
- Sugam Kharel
- Department of Chemistry, Texas A&M University, PO Box 30012, College Station, Texas, 77842-3012, USA
| | - Kyle J Cluff
- Department of Chemistry, Texas A&M University, PO Box 30012, College Station, Texas, 77842-3012, USA
| | - Nattamai Bhuvanesh
- Department of Chemistry, Texas A&M University, PO Box 30012, College Station, Texas, 77842-3012, USA
| | - John A Gladysz
- Department of Chemistry, Texas A&M University, PO Box 30012, College Station, Texas, 77842-3012, USA
| | - Janet Blümel
- Department of Chemistry, Texas A&M University, PO Box 30012, College Station, Texas, 77842-3012, USA
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31
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van den Bruinhorst A, Raes S, Maesara SA, Kroon MC, Esteves ACC, Meuldijk J. Hydrophobic eutectic mixtures as volatile fatty acid extractants. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.12.087] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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32
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Kharel S, Bhuvanesh N, Gladysz JA, Blümel J. New hydrogen bonding motifs of phosphine oxides with a silanediol, a phenol, and chloroform. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.03.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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33
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Deferm C, Malaquias JC, Onghena B, Banerjee D, Luyten J, Oosterhof H, Fransaer J, Binnemans K. Electrodeposition of indium from the ionic liquid trihexyl(tetradecyl)phosphonium chloride. GREEN CHEMISTRY : AN INTERNATIONAL JOURNAL AND GREEN CHEMISTRY RESOURCE : GC 2019; 21:1517-1530. [PMID: 31303860 PMCID: PMC6592163 DOI: 10.1039/c8gc03389g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 01/23/2019] [Indexed: 06/10/2023]
Abstract
The electrochemical behavior of indium in the ionic liquid trihexyl(tetradecyl)phosphonium chloride (Cyphos IL 101) was studied. Cyphos IL 101 first had to be purified, as the impurities present in commercial Cyphos IL 101 interfered with the electrochemical measurements. Electrochemical deposition of indium metal from this electrolyte occurs without hydrogen evolution, increasing the cathodic current efficiency compared to deposition from water and avoiding porosity within the deposited metal. Indium(iii) is the most stable oxidation state in the ionic liquid. This ion is reduced in two steps, first from indium(iii) to indium(i) and subsequently to indium(0). The high thermal stability of Cyphos IL 101 allowed the electrodeposition of indium at 120 °C and 180 °C. At 180 °C indium was deposited as liquid indium which allows for the easy separation of the indium and the possibility to design a continuous electrowinning process. On molybdenum, indium deposits as liquid droplets even below the melting point of indium. This was explained by the combination of melting point depression and undercooling. The possibility to separate indium from iron and zinc by electrodeposition was tested. It is possible to separate indium from zinc by electrodeposition, but iron deposits together with indium.
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Affiliation(s)
- Clio Deferm
- KU Leuven , Department of Chemistry , Celestijnenlaan 200F , bus 2404 , B-3001 Heverlee , Belgium .
- Umicore , Group Research & Development , Competence Area Recycling and Extraction Technologies , Watertorenstraat 33 , B-2250 Olen , Belgium
| | - João C Malaquias
- KU Leuven , Department of Materials Engineering , Kasteelpark Arenberg 44 , bus 2450 , B-3001 Heverlee , Belgium
| | - Bieke Onghena
- KU Leuven , Department of Chemistry , Celestijnenlaan 200F , bus 2404 , B-3001 Heverlee , Belgium .
| | - Dipanjan Banerjee
- Dutch-Belgian Beamline (DUBBLE) , ESRF - The European Synchrotron , CS 40220 , 38043 Grenoble Cedex 9 , France
| | - Jan Luyten
- Umicore , Group Research & Development , Competence Area Recycling and Extraction Technologies , Watertorenstraat 33 , B-2250 Olen , Belgium
| | - Harald Oosterhof
- Umicore , Group Research & Development , Competence Area Recycling and Extraction Technologies , Watertorenstraat 33 , B-2250 Olen , Belgium
| | - Jan Fransaer
- KU Leuven , Department of Materials Engineering , Kasteelpark Arenberg 44 , bus 2450 , B-3001 Heverlee , Belgium
| | - Koen Binnemans
- KU Leuven , Department of Chemistry , Celestijnenlaan 200F , bus 2404 , B-3001 Heverlee , Belgium .
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Ebnou F, M'Haiham M, Ebeid K, Carpenter-Warren CL, Slawin AM, Woollins JD, Ben Dhia MT, Sanhoury MA. Synthesis, characterization, and structural properties of mercury(II), cadmium(II) and zinc(II) tripiperidinophosphine chalcogenide complexes. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.11.059] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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35
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Arp FF, Ahn SH, Bhuvanesh N, Blümel J. Selective synthesis and stabilization of peroxides via phosphine oxides. NEW J CHEM 2019. [DOI: 10.1039/c9nj04858h] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
MEKPO (methyl ethyl ketone peroxide) and other peroxides can be synthesized selectively and stabilized as hydrogen-bonded phosphine oxide adducts.
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Affiliation(s)
- Fabian F. Arp
- Department of Chemistry
- Texas A&M University
- College Station
- USA
| | - Shin Hye Ahn
- Department of Chemistry
- Texas A&M University
- College Station
- USA
| | | | - Janet Blümel
- Department of Chemistry
- Texas A&M University
- College Station
- USA
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36
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Navasardyan MA, Kuz'mina LG, Churakov AV. Unusual isomorphism in crystals of organic solvates with hydrazine and water. CrystEngComm 2019. [DOI: 10.1039/c9ce00978g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Unusual isomorphism and isomorphous substitution in crystals of organic solvates with hydrazine and water are observed for the first time.
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Affiliation(s)
- Mger A. Navasardyan
- Institute of General and Inorganic Chemistry
- Russian Academy of Sciences
- Moscow
- Russia
| | - Lyudmila G. Kuz'mina
- Institute of General and Inorganic Chemistry
- Russian Academy of Sciences
- Moscow
- Russia
| | - Andrei V. Churakov
- Institute of General and Inorganic Chemistry
- Russian Academy of Sciences
- Moscow
- Russia
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37
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Matsinha LC, Siangwata S, Smith GS, Makhubela BCE. Aqueous biphasic hydroformylation of olefins: From classical phosphine-containing systems to emerging strategies based on water-soluble nonphosphine ligands. CATALYSIS REVIEWS-SCIENCE AND ENGINEERING 2018. [DOI: 10.1080/01614940.2018.1541781] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Leah C. Matsinha
- Department of Chemistry, University of Johannesburg, Johannesburg, South Africa
| | - Shepherd Siangwata
- Department of Chemistry, University of Cape Town, Cape Town, South Africa
| | - Gregory S. Smith
- Department of Chemistry, University of Cape Town, Cape Town, South Africa
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38
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Lee YH, Jana S, Lee H, Lee SU, Lee MH. Rational design of time-resolved turn-on fluorescence sensors: exploiting delayed fluorescence for hydrogen peroxide sensing. Chem Commun (Camb) 2018; 54:12069-12072. [PMID: 30295687 DOI: 10.1039/c8cc07397j] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Weakly emissive phosphine compounds, which contain a carbazolyl donor-triarylboryl acceptor luminophore, become strongly delayed fluorescent upon changes to their oxide forms. Time-gated acquisition of the fluorescence signals of phosphine in the presence of H2O2 and a competitive fluorescence dye allow for detection of H2O2 with elimination of short-lived fluorescence noise.
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Affiliation(s)
- Young Hoon Lee
- Department of Chemistry, University of Ulsan, Ulsan 44610, Republic of Korea.
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Arumugam R, Shankar B, Shanmugam R, Arumuganathan T, Sathiyendiran M. Phosphine oxide-based tricarbonylrhenium(i) complexes from phosphine/phosphine oxide and dihydroxybenzoquinones. Dalton Trans 2018; 47:13894-13901. [PMID: 30226250 DOI: 10.1039/c8dt02985g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Neutral phosphine oxide (P[double bond, length as m-dash]O) donor-based organometallic complexes [{Re(CO)3O[double bond, length as m-dash]PCy3}{μ-DHBQ}{Re(CO)3O[double bond, length as m-dash]PCy3}] (1), [{Re(CO)3O[double bond, length as m-dash]PPh3}{μ-DHBQ}{Re(CO)3O[double bond, length as m-dash]PPh3}] (2), [{Re(CO)3O[double bond, length as m-dash]PCy3}{μ-THQ}{Re(CO)3O[double bond, length as m-dash]PCy3}] (3), [{Re(CO)3O[double bond, length as m-dash]PPh3}{μ-THQ}{Re(CO)3O[double bond, length as m-dash]PPh3}] (4), [{Re(CO)3O[double bond, length as m-dash]PCy3}{μ-CA}{Re(CO)3O[double bond, length as m-dash]PCy3}] (5), and [{Re(CO)3O[double bond, length as m-dash]PPh3}{μ-CA}{Re(CO)3O[double bond, length as m-dash]PPh3}] (6) were assembled from phosphine/phosphine oxide, a dihydroxybenzoquinone donor and Re2(CO)10via a one-pot solvothermal approach. The soft phosphine donor was transformed into a hard phosphine oxide donor during the formation of 1, 3, 4, 5, and 6. The complexes 1-6 were air and moisture stable and were soluble in polar organic solvents. The complexes were characterized by elemental analysis, FT-IR, and NMR spectroscopic methods. The molecular structures of 1, 2, 4, and 6 were analyzed by single-crystal X-ray diffraction analysis. The UV-Visible absorption studies indicated that 1-6 in THF display strong visible light absorption in the range of ∼350-700 nm.
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Affiliation(s)
- Ramar Arumugam
- Department of Chemistry, Thiagarajar College, Madurai 625 009, Tamil Nadu, India
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40
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Insights into the bonding between tributylphosphine chalcogenides and zinc(II). Theor Chem Acc 2018. [DOI: 10.1007/s00214-018-2245-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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41
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Tsuneda T, Miyake J, Miyatake K. Mechanism of H 2O 2 Decomposition by Triphenylphosphine Oxide. ACS OMEGA 2018; 3:259-265. [PMID: 31457891 PMCID: PMC6641267 DOI: 10.1021/acsomega.7b01416] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2017] [Accepted: 12/26/2017] [Indexed: 06/10/2023]
Abstract
A decomposition mechanism of H2O2 by triphenylphosphine oxide (TPPO) is presented. TPPO is often incorporated in proton-exchange membrane electrolytes as a moiety to inhibit the H2O2-induced degradation of the membranes. However, it has not been revealed how TPPO decreases the concentration of free H2O2 in the membranes. Following the experimental X-ray structures, the TPPO dimer capturing two H2O2 molecules was used as the calculation model. The vibrational spectrum calculations for various hydration numbers show that this model correctly reproduces the spectral peaks of TPPO capturing H2O2. On the basis of this model, the H2O2 decomposition mechanism by the TPPO dimer was searched. It was consequently found that this reaction proceeds through three steps: (1) Hydrogen transfer from H2O2 to the P=O bond of TPPO, (2) Hydrogen transfer from the -OOH group to the -OH group, and (3) O-O bond formation between O2 groups. The calculated vibrational spectra for the reactants and intermediates indicated that the first and second steps are activated by vibrational excitations. Moreover, the third step giving low barrier heights is considered to proceed through two reaction paths: directly producing the O2 molecule or going through an HOOOH intermediate. Interestingly, this reaction mechanism was found to use the violation of the octet rule for the P=O double bond, resulting in the strong H2O2 binding of TPPO.
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42
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Suter R, Swidan A, Zijlstra HS, Macdonald CLB, McIndoe JS, Burford N. Synthesis, characterization and mass-spectrometric analysis of [LSn(IV)F4−x]x+ salts [L = tris ((1-ethyl-benzoimidazol-2-yl)methyl)amine, x = 1–4]. Dalton Trans 2018; 47:16729-16736. [DOI: 10.1039/c8dt03908a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of cationic tin fluoride complexes has been synthesized by successive fluoride abstraction from SnF4 with TMSOTf in the presence of the tetradentate nitrogen donor BIMEt3.
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Affiliation(s)
- Riccardo Suter
- Department of Chemistry
- University of Victoria
- Victoria
- Canada
| | - Ala'aeddeen Swidan
- Department of Chemistry and Biochemistry
- University of Windsor
- Windsor
- Canada
| | | | | | | | - Neil Burford
- Department of Chemistry
- University of Victoria
- Victoria
- Canada
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43
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Deferm C, Van den Bossche A, Luyten J, Oosterhof H, Fransaer J, Binnemans K. Thermal stability of trihexyl(tetradecyl)phosphonium chloride. Phys Chem Chem Phys 2018; 20:2444-2456. [DOI: 10.1039/c7cp08556g] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The thermal stability of the ionic liquid Cyphos IL 101 was investigated under various experimental conditions for possible high-temperature applications.
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Affiliation(s)
- Clio Deferm
- KU Leuven
- Department of Chemistry
- B-3001 Heverlee
- Belgium
- Umicore
| | | | - Jan Luyten
- Umicore
- Group Research & Development
- Competence Area Recycling and Extraction Technologies
- B-2250 Olen
- Belgium
| | - Harald Oosterhof
- Umicore
- Group Research & Development
- Competence Area Recycling and Extraction Technologies
- B-2250 Olen
- Belgium
| | - Jan Fransaer
- KU Leuven
- Department of Materials Engineering
- B-3001 Heverlee
- Belgium
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44
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Gouid Z, Sanhoury MAK, Ben Said R, Carpenter-Warren CL, Slawin AMZ, Ben Dhia MT, Woollins JD, Boughdiri S. Synthesis, characterization, structures, and DFT study of zinc(II) complexes with tributylphosphine chalcogenides. J COORD CHEM 2017. [DOI: 10.1080/00958972.2017.1416357] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Zied Gouid
- Laboratory of Structural Organic Chemistry: Synthesis and Physicochemical Studies, Faculty of Sciences of Tunis, Department of Chemistry, University of Tunis El Manar, Tunis, Tunisia
- Research Unit: Physico-Chimie des Matériaux à l’Etat Condensé, Faculty of Sciences of Tunis, Department of Chemistry, University Tunis El Manar, Tunis, Tunisia
| | - M. A. K. Sanhoury
- Laboratory of Structural Organic Chemistry: Synthesis and Physicochemical Studies, Faculty of Sciences of Tunis, Department of Chemistry, University of Tunis El Manar, Tunis, Tunisia
- Research Unit in Materials Chemistry, Faculty of Sciences and Techniques, UNA, Nouakchott, Mauritania
| | - R. Ben Said
- Research Unit: Physico-Chimie des Matériaux à l’Etat Condensé, Faculty of Sciences of Tunis, Department of Chemistry, University Tunis El Manar, Tunis, Tunisia
| | | | | | - M. T. Ben Dhia
- Laboratory of Structural Organic Chemistry: Synthesis and Physicochemical Studies, Faculty of Sciences of Tunis, Department of Chemistry, University of Tunis El Manar, Tunis, Tunisia
| | - J. Derek Woollins
- EaStCHEM School of Chemistry, University of St Andrews, St Andrews, UK
| | - S. Boughdiri
- Research Unit: Physico-Chimie des Matériaux à l’Etat Condensé, Faculty of Sciences of Tunis, Department of Chemistry, University Tunis El Manar, Tunis, Tunisia
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45
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Churakov AV, Prikhodchenko PV, Medvedev AG, Mikhaylov AA. Crystal structure of ( Z)- N-benzyl-idene-1-phenyl-methanamine oxide hydrogen peroxide monosolvate. ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS 2017; 73:1666-1669. [PMID: 29152346 PMCID: PMC5683486 DOI: 10.1107/s2056989017014499] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 10/07/2017] [Indexed: 11/29/2022]
Abstract
The title structure consists of a (Z)-N-benzylidene-1-phenylmethanamine oxide and a hydrogen peroxide molecule linked through both O—H groups into a one-dimensional chain structure. The title adduct, C14H13NO·H2O2, consists of (Z)-N-benzylidene-1-phenylmethanamine oxide and hydrogen peroxide molecules in a 1:1 ratio. The organic coformer adopts a skew geometry with an inter-aryl-ring dihedral angle of 81.9 (2)°. In the crystal, the organic and peroxide molecules are linked through both peroxide O—H donor groups to oxide O-atom acceptors, giving one-dimensional chains extending along the b axis. Present also are weak intermolecular C—H⋯O hydrogen-bonding interactions.
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Affiliation(s)
- Andrei V Churakov
- Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii prospekt 31, Moscow 119991, Russian Federation
| | - Petr V Prikhodchenko
- Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii prospekt 31, Moscow 119991, Russian Federation
| | - Alexander G Medvedev
- Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii prospekt 31, Moscow 119991, Russian Federation
| | - Alexey A Mikhaylov
- Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii prospekt 31, Moscow 119991, Russian Federation
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46
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Ahn SH, Bhuvanesh N, Blümel J. Di(hydroperoxy)alkane Adducts of Phosphine Oxides: Safe, Solid, Stoichiometric, and Soluble Oxidizing Agents. Chemistry 2017; 23:16998-17009. [DOI: 10.1002/chem.201703676] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Shin Hye Ahn
- Department of Chemistry Texas A&M University College Station TX 77842-3012 USA
| | - Nattamai Bhuvanesh
- Department of Chemistry Texas A&M University College Station TX 77842-3012 USA
| | - Janet Blümel
- Department of Chemistry Texas A&M University College Station TX 77842-3012 USA
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47
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Kadassery KJ, Dey SK, Cannella AF, Surendhran R, Lacy DC. Photochemical Water-Splitting with Organomanganese Complexes. Inorg Chem 2017; 56:9954-9965. [PMID: 28767229 DOI: 10.1021/acs.inorgchem.7b01483] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Certain organometallic chromophores with water-derived ligands, such as the known [Mn(CO)3(μ3-OH)]4 (1) tetramer, drew our attention as possible platforms to study water-splitting reactions. Herein, we investigate the UV irradiation of various tricarbonyl organomanganese complexes, including 1, and demonstrate that dihydrogen, CO, and hydrogen peroxide form as products in a photochemical water-splitting decomposition reaction. The organic and manganese-containing side products are also characterized. Labeling studies with 18O-1 suggest that the source of oxygen atoms in H2O2 originates from free water that interacts with 1 after photochemical dissociation of CO (1-CO) constituting the oxidative half-reaction of water splitting mediated by 1. Hydrogen production from 1 is the result of several different processes, one of which involves the protons derived from the hydroxido ligands in 1 constituting the reductive half-reaction of water splitting mediated by 1. Other processes that generate H2 are also operative and are described. Collectively the results from the photochemical decomposition of 1 provide an opportunity to propose a mechanism, and it is discussed within the context of developing new strategies for water-splitting reactions with organomanganese complexes.
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Affiliation(s)
- Karthika J Kadassery
- Department of Chemistry, University at Buffalo, State University of New York , Buffalo, New York 14260, United States
| | - Suman Kr Dey
- Department of Chemistry, University at Buffalo, State University of New York , Buffalo, New York 14260, United States
| | - Anthony F Cannella
- Department of Chemistry, University at Buffalo, State University of New York , Buffalo, New York 14260, United States
| | - Roshaan Surendhran
- Department of Chemistry, University at Buffalo, State University of New York , Buffalo, New York 14260, United States
| | - David C Lacy
- Department of Chemistry, University at Buffalo, State University of New York , Buffalo, New York 14260, United States
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48
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Reactivity of cyrhetrenylphosphines: Synthesis and characterization of oxides, boranes and selenides. INORG CHEM COMMUN 2017. [DOI: 10.1016/j.inoche.2017.01.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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49
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Campos CH, Belmar JB, Jeria SE, Urbano BF, Torres CC, Alderete JB. Rhodium(i) diphenylphosphine complexes supported on porous organic polymers as efficient and recyclable catalysts for alkene hydrogenation. RSC Adv 2017. [DOI: 10.1039/c6ra26104c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Highly stable, chemoselective and recyclable immobilized Rh(i) homogeneous catalysts for alkene hydrogenation.
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Affiliation(s)
- Cristian H. Campos
- Departamento de Físico-Química
- Facultad de Ciencias Químicas
- Universidad de Concepción
- Concepción
- Chile
| | - Julio B. Belmar
- Departamento de Química Orgánica
- Facultad de Ciencias Químicas
- Universidad de Concepción
- Concepción
- Chile
| | - Solange E. Jeria
- Departamento de Química Orgánica
- Facultad de Ciencias Químicas
- Universidad de Concepción
- Concepción
- Chile
| | - Bruno F. Urbano
- Departamento de Polímeros
- Facultad de Ciencias Químicas
- Universidad de Concepción
- Concepción
- Chile
| | - Cecilia C. Torres
- Departamento de Ciencias Químicas
- Facultad de Ciencias Exactas
- Universidad Andres Bello
- Talcahuano
- Chile
| | - Joel B. Alderete
- Departamento de Química Orgánica
- Facultad de Ciencias Químicas
- Universidad de Concepción
- Concepción
- Chile
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50
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