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Motaln K, Gurung K, Brázda P, Kokalj A, Radan K, Dragomir M, Žemva B, Palatinus L, Lozinšek M. Reactive Noble-Gas Compounds Explored by 3D Electron Diffraction: XeF 2-MnF 4 Adducts and a Facile Sample Handling Procedure. ACS CENTRAL SCIENCE 2024; 10:1733-1741. [PMID: 39345812 PMCID: PMC11428288 DOI: 10.1021/acscentsci.4c00815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Revised: 07/08/2024] [Accepted: 07/17/2024] [Indexed: 10/01/2024]
Abstract
Recent advances in 3D electron diffraction (3D ED) have succeeded in matching the capabilities of single-crystal X-ray diffraction (SCXRD), while requiring only submicron crystals for successful structural investigations. One of the many diverse areas to benefit from the 3D ED structural analysis is main-group chemistry, where compounds are often poorly crystalline or single-crystal growth is challenging. A facile method for loading and transferring highly air-sensitive and strongly oxidizing samples at low temperatures to a transmission electron microscope (TEM) for 3D ED analysis was successfully developed and tested on xenon(II) compounds from the XeF2-MnF4 system. The crystal structures determined on nanometer-sized crystallites by dynamical refinement of the 3D ED data are in complete agreement with the results obtained by SCXRD on micrometer-sized crystals and by periodic density-functional theory (DFT) calculations, demonstrating the applicability of this approach for structural studies of noble-gas compounds and highly reactive species in general. The compounds 3XeF2·2MnF4, XeF2·MnF4, and XeF2·2MnF4 are rare examples of structurally fully characterized xenon difluoride-metal tetrafluoride adducts and thus advance our knowledge of the diverse structural chemistry of these systems, which also includes the hitherto poorly characterized first noble-gas compound, "XePtF6".
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Affiliation(s)
- Klemen Motaln
- Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia
- Jožef Stefan International Postgraduate School, Jamova cesta 39, 1000 Ljubljana, Slovenia
| | - Kshitij Gurung
- Department of Structure Analysis, Institute of Physics of the Czech Academy of Sciences, Na Slovance 1999/2, Prague 8, 18221, Czech Republic
| | - Petr Brázda
- Department of Structure Analysis, Institute of Physics of the Czech Academy of Sciences, Na Slovance 1999/2, Prague 8, 18221, Czech Republic
| | - Anton Kokalj
- Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia
- Jožef Stefan International Postgraduate School, Jamova cesta 39, 1000 Ljubljana, Slovenia
| | - Kristian Radan
- Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia
| | - Mirela Dragomir
- Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia
- Jožef Stefan International Postgraduate School, Jamova cesta 39, 1000 Ljubljana, Slovenia
| | - Boris Žemva
- Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia
- Jožef Stefan International Postgraduate School, Jamova cesta 39, 1000 Ljubljana, Slovenia
| | - Lukáš Palatinus
- Department of Structure Analysis, Institute of Physics of the Czech Academy of Sciences, Na Slovance 1999/2, Prague 8, 18221, Czech Republic
| | - Matic Lozinšek
- Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia
- Jožef Stefan International Postgraduate School, Jamova cesta 39, 1000 Ljubljana, Slovenia
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2
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Ismael F, Fleming CL, Christopher TD, Söhnel T, Zhou Y, Krenske EH, Gahan LR, Blackman AG. Co(III) complexes of the pentadentate NHC ligand PY4Im: carbene-induced trans influences and the non-disappearing 13C NMR peak. Dalton Trans 2024; 53:12688-12697. [PMID: 39015102 DOI: 10.1039/d4dt01579g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2024]
Abstract
Co(III) complexes of the N-heterocyclic carbene ligand PY4Im (PY4Im = (1,3-bis(bis(2-pyridyl)methyl)imidazol-2-ylidene)) having the general formula [(PY4Im)Co(X)](ClO4)n (X = NCMe; n = 3: OH-, N3-, NCS-, ONO-, F-; n = 2: O2CO2-, n = 1; (N3-)3, n = 0) were prepared and structurally characterised. X-ray structural data are consistent with the presence of a trans influence due to the coordinated carbene carbon, and this is also supported by computational results. 13C NMR spectra of the complexes did not display peaks corresponding to the carbene carbon, except in the case of the [(PY4Im)Co(O2CO)]+ cation, where a peak at δ = 170.21 ppm was observed. However, HMBC spectra allowed indirect determination of the chemical shifts of the carbene carbon in the remaining complexes, owing to the geometry of the PY4Im ligand. Calculated 13C chemical shifts for the complexes showed very good agreement with the experimental values for all but the carbene carbon atoms in all cases.
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Affiliation(s)
- Fouad Ismael
- Department of Chemistry, Auckland University of Technology, Private Bag 92006, Auckland 1142, New Zealand.
| | - Cassandra L Fleming
- Department of Chemistry, Auckland University of Technology, Private Bag 92006, Auckland 1142, New Zealand.
- The University of Sydney, Chemistry Building, Eastern Ave, Camperdown, NSW 2050, Australia
| | - Timothy D Christopher
- School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Tilo Söhnel
- School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, PO Box 600, Wellington 6140, New Zealand
| | - Yuchen Zhou
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Elizabeth H Krenske
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Lawrence R Gahan
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Allan G Blackman
- Department of Chemistry, Auckland University of Technology, Private Bag 92006, Auckland 1142, New Zealand.
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3
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Gruden E, Prinčič GG, Hočevar J, Iskra J, Kvíčala J, Tavčar G. From cyclic (alkyl)(amino)carbene (CAAC) precursors to fluorinating reagents. Experimental and theoretical study. Dalton Trans 2023. [PMID: 37368434 DOI: 10.1039/d3dt01476b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
Addition of anhydrous HF to the hydrochloride [MeCAACH][Cl(HCl)0.5] resulted in the formation of salts with high HF content. By stepwise removal of HF in vacuo, we selectively prepared [MeCAACH][F(HF)2] (3) and [MeCAACH][F(HF)3] (4). We also characterised a salt with [F(HF)4]- anions within the structure of [MeCAACH][F(HF)3.5] (5). Compounds with a lower content of HF were not accessible under vacuum conditions. MeCAAC(H)F (1) was selectively prepared by abstraction of HF from 3 with CsF or KF, while [MeCAACH][F(HF)] (2) was prepared by mixing 3 and 1 in a 1 : 1 ratio. Compound 2 proved to be quite unstable as it tends to disproportionate into 1 and 3. This observation triggered our computational study, in which the structural relationships between CAAC-based fluoropyrrolidines and dihydropyrrolium fluorides were investigated using different DFT methods. The study showed that the results were very sensitive to the computational method used. For a correct description, the quality of the triple-ζ basis set was crucial. Surprisingly, the isodesmic reaction of [MeCAACH][F] + [MeCAACH][F(HF)2] → [MeCAACH][F(HF)] + [MeCAACH][F(HF)] did not confirm the low thermodynamic stability of 2. Furthermore, the use of 3 as a nucleophilic fluorinating reagent was tested on a range of organic substrates, as it is the most stable compound in this series. It was found to have the potential to fluorinate benzyl bromides, 1- and 2-alkyl bromides, silanes and sulfonyls with good to excellent yields of the target fluorides.
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Affiliation(s)
- Evelin Gruden
- Department of Inorganic Chemistry and Technology, "Jožef Stefan" Institute, Jamova cesta 39, Ljubljana, Slovenia.
| | - Griša Grigorij Prinčič
- Department of Chemistry and Biochemistry, University of Ljubljana, Faculty of Chemistry and Chemical Technology, Večna pot 113, 1000 Ljubljana, Slovenia
| | - Jan Hočevar
- Department of Chemistry and Biochemistry, University of Ljubljana, Faculty of Chemistry and Chemical Technology, Večna pot 113, 1000 Ljubljana, Slovenia
| | - Jernej Iskra
- Department of Chemistry and Biochemistry, University of Ljubljana, Faculty of Chemistry and Chemical Technology, Večna pot 113, 1000 Ljubljana, Slovenia
| | - Jaroslav Kvíčala
- Department of Organic Chemistry, University of Chemistry and Technology, Technická 5, 166 28 Prague 6, Prague, Czech Republic
| | - Gašper Tavčar
- Department of Inorganic Chemistry and Technology, "Jožef Stefan" Institute, Jamova cesta 39, Ljubljana, Slovenia.
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4
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Horrer G, Krummenacher I, Mann S, Braunschweig H, Radius U. N-Heterocyclic carbene and cyclic (alkyl)(amino)carbene complexes of vanadium(III) and vanadium(V). Dalton Trans 2022; 51:11054-11071. [PMID: 35796195 DOI: 10.1039/d2dt01250b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
[VCl3(THF)3] offers a convenient entrance point into the chemistry of carbene stabilized V(III) complexes. Herein we report the paramagnetic mono- and biscarbene complexes [VCl3(cAACMe)] 1, [VCl3(cAACMe)(THF)] 1(thf), [VCl3(IMes)] 2, [{VCl2(IiPrMe)(μ-Cl)}2] 3, [VCl3(IDipp)] 4, [VCl3(SIDipp)] 5, [VCl3(SIDipp)(THF)] 5(thf), [VCl3(ItBu)] 6, [VCl3(cAACMe)2] 7 and [VCl3(IiPrMe)2] 8. Reaction of 1 with MesMgCl, MesLi and LiNPh2 afforded the complexes [VCl2(Mes)(cAACMe)] 9, [cAACMeH]+[VCl2Mes2]-10 and [VCl2(NPh2)(cAACMe)] 11. The V(V) complexes [V(O)Cl3(IDipp)] 12 and [V(O)Cl3(SIDipp)] 13 were selectively prepared from oxygen oxidation of 4 and 5. [V(O)Cl3(IDipp)] 12 and [V(O)Cl3(IMes)] react with isocyanates to yield the NHC-ligated imido complexes [V(N-p-CH3C6H4)Cl3(IDipp)] 14, [V(N-p-FC6H4)Cl3(IDipp)] 15, [V(N-p-CH3C6H4)Cl3(SIDipp)] 16, [V(N-p-FC6H4)Cl3(SIDipp)] 17, [V(N-p-CH3C6H4)Cl3(IMes)] 18 and [V(N-p-FC6H4)Cl3(IMes)] 19.
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Affiliation(s)
- Günther Horrer
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
| | - Ivo Krummenacher
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany. .,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Sophie Mann
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
| | - Holger Braunschweig
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany. .,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Udo Radius
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
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Alič B, Petrovčič J, Jelen J, Tavčar G, Iskra J. Renewable Reagent for Nucleophilic Fluorination. J Org Chem 2022; 87:5987-5993. [PMID: 35438994 PMCID: PMC9087198 DOI: 10.1021/acs.joc.2c00247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Indexed: 11/28/2022]
Abstract
Herein, we report a study on the reactivity of three 1,3-diarylimidazolium-based fluoride reagents, with a general formula of [IPrH][F(HF)n] (n = 0, 1, or 2), that tackle the challenges of limited solubility, hygroscopicity, instability, and laborious preparation procedures of nucleophilic fluoride reagents. Fluorination of 4-tert-butylbenzyl bromide reveals that trifluoride [IPrH][F(HF)2] is the most selective reagent. Microwave-assisted activation coupled with the addition of sterically hindered amine DIPEA or alkali metal fluorides increases the rate of fluorination with [IPrH][F(HF)2], making it an excellent reagent for the fluorination of various organic substrates. The scope of substrates includes benzyl bromides, iodides, chlorides, aliphatic halides, tosylates, mesylates, α-haloketones, a silyl chloride, acyl and sulfuryl chlorides, and a nitroarene. The exceptional stability of the air-stable and nonhygroscopic [IPrH][F(HF)2] reagent is illustrated by its convenient synthesis and detailed experimental regeneration protocol using hydrofluoric acid without organic solvents.
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Affiliation(s)
- Blaž Alič
- Department
of Inorganic Chemistry and Technology, Jožef
Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
| | - Jan Petrovčič
- Department
of Chemistry and Biochemistry, University
of Ljubljana, Faculty of Chemistry and Chemical Technology, Večna pot 113, 1000 Ljubljana, Slovenia
| | - Jan Jelen
- Department
of Inorganic Chemistry and Technology, Jožef
Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
| | - Gašper Tavčar
- Department
of Inorganic Chemistry and Technology, Jožef
Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
| | - Jernej Iskra
- Department
of Chemistry and Biochemistry, University
of Ljubljana, Faculty of Chemistry and Chemical Technology, Večna pot 113, 1000 Ljubljana, Slovenia
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6
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Gruden E, Tramšek M, Tavčar G. Discrete Organofluoroaluminate Anions: Synthetic, Structural, and Spectroscopic Aspects. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Evelin Gruden
- Department of Inorganic Chemistry and Technology, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
- Jožef Stefan International Postgraduate School, Jamova 39, 1000 Ljubljana, Slovenia
| | - Melita Tramšek
- Department of Inorganic Chemistry and Technology, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
| | - Gašper Tavčar
- Department of Inorganic Chemistry and Technology, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
- Jožef Stefan International Postgraduate School, Jamova 39, 1000 Ljubljana, Slovenia
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7
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Kokalj A, Zupanek Ž, Tramšek M, Tavčar G. Coordination of a Neutral Ligand to a Metal Center of Oxohalido Anions: Fact or Fiction? Inorg Chem 2021; 60:11932-11947. [PMID: 34350762 PMCID: PMC8388118 DOI: 10.1021/acs.inorgchem.1c00947] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
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Can a neutral ligand
bond to a metal center of a square pyramidal
oxohalido anion at the available sixth octahedral position? Crystal
structures of some compounds indeed suggest that ligands, such as
THF, pyridine, H2O, NH3, and CH3CN,
can interact with the central metal atom, because they are oriented
with their heteroatom toward the metal center with distances being
within the bonding range. However, this assumption that is based on
chemical intuition is wrong. In-depth analysis of interactions between
ligands and oxohalido anions (e.g., VOX4–, NbOCl4–) reveals that the bonding
of a neutral ligand is almost entirely due to electrostatic interactions
between the H atoms of a ligand and halido atoms of an anion. Furthermore,
ab initio calculations indicate that the ligand–VOF4– interactions represent only about one-quarter
of the total binding of the ligand within the crystal structure, whereas
the remaining binding is due to crystal packing effects. The current
study therefore shows that relying solely on the structural aspects
of solved crystal structures, such as ligand orientation and bond
distances, can lead to the wrong interpretation of the chemical bonding. Some crystal structures suggest that
ligands interact chemically
with the metal center of oxohalido anions. However, analysis shows
that the attraction between the heteroatom of the ligand and the metal
center is counteracted by the repulsion between the heteroatom and
the electronegative F atoms, making electrostatic F···H
interactions and crystal packing effects the dominant force holding
the ligand and anion together. This is the reason why some ligands
rotate with their heteroatom away from the metal center.
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Affiliation(s)
- Anton Kokalj
- Department of Physical and Organic Chemistry, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia.,Jožef Stefan International Postgraduate School, Jamova 39, 1000 Ljubljana, Slovenia
| | - Žiga Zupanek
- Department of Inorganic Chemistry and Technology, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia.,Jožef Stefan International Postgraduate School, Jamova 39, 1000 Ljubljana, Slovenia
| | - Melita Tramšek
- Department of Inorganic Chemistry and Technology, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
| | - Gašper Tavčar
- Department of Inorganic Chemistry and Technology, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia.,Jožef Stefan International Postgraduate School, Jamova 39, 1000 Ljubljana, Slovenia
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Suresh L, Finnstad J, Törnroos KW, Le Roux E. Bis(phenolate)-functionalized N-heterocyclic carbene complexes of oxo- and imido-vanadium(V). Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120301] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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9
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Arsenyeva KV, Chegerev MG, Cherkasov AV, Pashanova KI, Ershova IV, Trofimova OY, Piskunov AV. Facile synthesis of digermylene oxide and its reactivity towards vanadocene: the first example of Cp2V–germylene coordination. MENDELEEV COMMUNICATIONS 2021. [DOI: 10.1016/j.mencom.2021.04.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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10
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Arsenyeva KV, Chegerev MG, Cherkasov AV, Pashanova KI, Ershova IV, Trofimova OY, Piskunov AV. Facile synthesis of digermylene oxide and its reactivity towards vanadocene: the first example of Cp2V–germylene coordination. MENDELEEV COMMUNICATIONS 2021. [DOI: 10.1016/j.mencom.2021.05.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Romain C, Bellemin-Laponnaz S, Dagorne S. Recent progress on NHC-stabilized early transition metal (group 3–7) complexes: Synthesis and applications. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213411] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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12
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Zupanek Ž, Tramšek M, Kokalj A, Tavčar G. The peculiar case of conformations in coordination compounds of group V pentahalides with N-heterocyclic carbene and synthesis of their imidazolium salts. J Fluor Chem 2019. [DOI: 10.1016/j.jfluchem.2019.109373] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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13
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Levason W, Monzittu FM, Reid G. Coordination chemistry and applications of medium/high oxidation state metal and non-metal fluoride and oxide-fluoride complexes with neutral donor ligands. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.04.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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14
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Xu QW, Wang QS, Li SS, Li X. Cu(ii)/Ni(ii)–organic frameworks constructed from the homometallic clusters by 5-(2-carboxyphenoxy)isophthalic acid and N-ligand: synthesis, structures and visible light-driven photocatalytic properties. RSC Adv 2019; 9:16305-16312. [PMID: 35516395 PMCID: PMC9064381 DOI: 10.1039/c9ra01496a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 06/03/2019] [Accepted: 05/14/2019] [Indexed: 11/29/2022] Open
Abstract
Four new complexes, namely, Cu2(O-cpia)(btb)0.5·(OH) (1), Cu3(O-cpia)2(bpy)2 (2), [Ni2(O-cpia)(phen)·(OH)·H2O]·2H2O (3) and [Ni3(O-cpia)2(bpy)3·2H2O]·2H2O (4) (O-cpia = 5-(2-carboxyphenoxy)isophthalic acid, btb = 1,4-bis(1,2,4-triazol-1-yl)butane, bpy = 4,4′-bipyridine) were successfully isolated under hydrothermal conditions. The four complexes exhibit different architectures constructed from different homometallic clusters varying from mononuclear, binuclear to tetranuclear metal(ii) polyhedra as Second Building Blocks (SBUs). 1 features a 3D framework constructed from the tetranuclear clusters [Cu4(μ3-OH)2] as SBUs, linked with Cu(1)O4N and Cu(2)O5 polyhedra by O-cpia/btb mixed linkers. 2 also exhibits a 3D structure based on trinuclear clusters [Cu3(COO)4] SBUs, bridged with Cu(1)O3N2 and Cu(2)O4 polyhedra via O-cpia/bpy mixed ligands. 3 shows a 2D network consisting of tetranuclear clusters [Ni4(μ3-OH)2] SBUs, which are bridged with Ni(1)O4N2 and Ni(2)O6 through O-cpia ligands. It is worth noting that 4, with a 3D structure, is generated from the binuclear clusters [Ni2(COO)4] (Ni(1)O4N) and mononuclear metal Ni(2) cores (Ni(2)O4N2) as SBUs, and bridged by O-cpia/bpy mixed ligands. Meanwhile, the degradation of dyes (RhB) by the complexes under visible light irradiation was studied. 1–4 are semiconducting in nature, with Eg of 1.30 eV (1), 1.78 eV (2), 2.85 eV (3) and 2.14 eV (4). Cu(ii) complexes 1 and 2 are highly efficient photocatalysts for the degradation of RhB under visible light irradiation. Four Cu(ii)/Ni(ii)-metal–organic frameworks were constructed from different homometallic clusters by O-cpia/N-ligands. Cu(ii)-complexes show highly efficient photocatalysts for the degradation of RhB under visible light irradiation.![]()
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Affiliation(s)
- Qi-Wei Xu
- Department of Chemistry
- Capital Normal University
- Beijing
- China
| | - Qiu-Shuang Wang
- Department of Chemistry
- Capital Normal University
- Beijing
- China
| | - Shan-Shan Li
- Department of Chemistry
- Capital Normal University
- Beijing
- China
| | - Xia Li
- Department of Chemistry
- Capital Normal University
- Beijing
- China
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