1
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Kessler BJO, Mansoor IF, Wozniak DI, Emge TJ, Lipke MC. Controlling Intramolecular and Intermolecular Electronic Coupling of Radical Ligands in a Series of Cobaltoviologen Complexes. J Am Chem Soc 2023; 145:15924-15935. [PMID: 37460450 DOI: 10.1021/jacs.3c03725] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
Abstract
Controlling electronic coupling between multiple redox sites is of interest for tuning the electronic properties of molecules and materials. While classic mixed-valence (MV) systems are highly tunable, e.g., via the organic bridges connecting the redox sites, metal-bridged MV systems are difficult to control because the electronics of the metal cannot usually be altered independently of redox-active moieties embedded in its ligands. Herein, this limitation was overcome by varying the donor strengths of ancillary ligands in a series of cobalt complexes without directly perturbing the electronics of viologen-like redox sites bridged by the cobalt ions. The cobaltoviologens [1X-Co]n+ feature four 4-X-pyridyl donor groups (X = CO2Me, Cl, H, Me, OMe, NMe2) that provide gradual electronic tuning of the bridging CoII centers, while a related complex [2-Co]n+ with NHC donors supports exclusively CoIII states even upon reduction of the viologen units. Electrochemistry and IVCT band analysis indicate that the MV states of these complexes have electronic structures ranging from fully localized ([2-Co]4+; Robin-Day Class I) to fully delocalized ([1CO2Me-Co]3+; Class III) descriptions, demonstrating unprecedented control over electronic coupling without changing the identity of the redox sites or bridging metal. Additionally, single-crystal XRD characterization of the homovalent complexes [1H-Co]2+ and [1H-Zn]2+ revealed radical-pairing interactions between the viologen ligands of adjacent complexes, representing a type of through-space electronic coupling commonly observed for organic viologen radicals but never before seen in metalloviologens. The extended solid-state packing of these complexes produces 3D networks of radical π-stacking interactions that impart unexpected mechanical flexibility to these crystals.
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Affiliation(s)
- Brice J O Kessler
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 123 Bevier Road, Piscataway, New Jersey 08854, United States
| | - Iram F Mansoor
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 123 Bevier Road, Piscataway, New Jersey 08854, United States
| | - Derek I Wozniak
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 123 Bevier Road, Piscataway, New Jersey 08854, United States
| | - Thomas J Emge
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 123 Bevier Road, Piscataway, New Jersey 08854, United States
| | - Mark C Lipke
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 123 Bevier Road, Piscataway, New Jersey 08854, United States
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2
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Mazej Z. Fluoride ion donor ability of binary fluorides towards the Lewis acids AsF5 and SbF5. J Fluor Chem 2022. [DOI: 10.1016/j.jfluchem.2022.110073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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3
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Crystal Structures of Hexafluoridoantimonate(V) Salts of d‐block Metals in Oxidation State +2. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202101076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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4
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Mazej Z, Goreshnik E. Attempted syntheses of new mixed-cation hexafluoridoarsenates(V) in liquid anhydrous HF acidified with AsF5; the crystal structures of A3M(HF)Mn(AsF6)7 (A = H3O, K/H3O; M = Ca, Sr, Ba). J Fluor Chem 2021. [DOI: 10.1016/j.jfluchem.2021.109745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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5
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Abstract
![]()
We
report a computational survey of chemical doping of silver(II)
fluoride, which has recently attracted attention as an analogue of
La2CuO4—a known precursor of high-temperature
superconductors. By introducing fluorine defects (vacancies or interstitial
adatoms) into the crystal structure, we obtain nonstoichiometric,
electron- and hole-doped polymorphs of AgF2±x. We find that the ground-state solutions show a strong tendency
for localization of defects and of the associated electronic states,
and the resulting doped phases exhibit insulating or semiconducting
properties. Furthermore, the distribution of Ag(I)/Ag(III) sites which
appear in the crystal structure points to the propensity of the AgF2 system for phase separation upon chemical doping, which is
in line with observations from previous experimental attempts. Overall,
our results indicate that chemical modification may not be a feasible
way to achieve doping in bulk silver(II) fluoride, which is considered
essential for the emergence of high-Tc superconductivity. A
theoretical study of the 1/32, 1/16, and 1/8 electron-
and hole-doped AgF2 reveals that vacancies and adatoms
have a tendency for localization, that is, formation of mixed-, rather
than intermediate-valence, fluoride systems, which results in a persistent
band gap at the Fermi level.
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Affiliation(s)
- Adam Grzelak
- Center of New Technologies, University of Warsaw, Banacha 2C, 02-097 Warsaw, Poland
| | - Mariana Derzsi
- Center of New Technologies, University of Warsaw, Banacha 2C, 02-097 Warsaw, Poland.,Advanced Technologies Research Institute, Faculty of Materials Science and Technology in Trnava, Slovak University of Technology in Bratislava, Jána Bottu 8857/25, 917 24 Trnava, Slovakia
| | - Wojciech Grochala
- Center of New Technologies, University of Warsaw, Banacha 2C, 02-097 Warsaw, Poland
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6
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Godfrey IJ, Dent AJ, Parkin IP, Maenosono S, Sankar G. Following the Formation of Silver Nanoparticles Using In Situ X-ray Absorption Spectroscopy. ACS OMEGA 2020; 5:13664-13671. [PMID: 32566831 PMCID: PMC7301364 DOI: 10.1021/acsomega.0c00697] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Accepted: 05/22/2020] [Indexed: 06/11/2023]
Abstract
The formation of silver and Au@Ag core@shell nanoparticles via reduction of AgNO3 by trisodium citrate was followed using in situ X-ray absorption near-edge structure (XANES) spectroscopy and time-resolved UV-visible (UV-vis) spectroscopy. The XANES data were analyzed through linear combination fitting, and the reaction kinetics were found to be consistent with first-order behavior with respect to silver cations. For the Au@Ag nanoparticles, the UV-vis data of a lab-scale reaction showed a gradual shift in dominance between the gold- and silver-localized surface plasmon absorbance bands. Notably, throughout much of the reaction, distinct gold and silver contributions to the UV-vis spectra were observed; however, in the final product, the contributions were not distinct.
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Affiliation(s)
- Ian J. Godfrey
- Department
of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K.
- School
of Materials Science, Japan Advanced Institute
of Science and Technology, 1-1 Asahidai, Nomi City, Ishikawa 923-1292, Japan
| | - Andrew J. Dent
- Diamond
Light Source, Harwell
Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, U.K.
| | - Ivan P. Parkin
- Department
of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K.
| | - Shinya Maenosono
- School
of Materials Science, Japan Advanced Institute
of Science and Technology, 1-1 Asahidai, Nomi City, Ishikawa 923-1292, Japan
| | - Gopinathan Sankar
- Department
of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K.
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7
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Jeon TH, Monllor-Satoca D, Moon GH, Kim W, Kim HI, Bahnemann DW, Park H, Choi W. Ag(I) ions working as a hole-transfer mediator in photoelectrocatalytic water oxidation on WO 3 film. Nat Commun 2020; 11:967. [PMID: 32075977 PMCID: PMC7031530 DOI: 10.1038/s41467-020-14775-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 01/31/2020] [Indexed: 12/21/2022] Open
Abstract
Ag(I) is commonly employed as an electron scavenger to promote water oxidation. In addition to its straightforward role as an electron acceptor, Ag(I) can also capture holes to generate the high-valent silver species. Herein, we demonstrate photoelectrocatalytic (PEC) water oxidation and concurrent dioxygen evolution by the silver redox cycle where Ag(I) acts as a hole-transfer mediator. Ag(I) enhances the PEC performance of WO3 electrodes at 1.23 V vs. RHE with increasing O2 evolution, while forming Ag(II) complexes (AgIINO3+). Upon turning off both light and potential bias, the photocurrent immediately drops to zero, whereas O2 evolution continues over ~10 h with gradual bleaching of the colored complexes. This phenomenon is observed neither in the Ag(I)-free PEC reactions nor in the photocatalytic (i.e., bias-free) reactions with Ag(I). This study finds that the role of Ag(I) is not limited as an electron scavenger and calls for more thorough studies on the effect of Ag(I). While water splitting catalysis may provide a renewable means to produce fuel, sacrificial reagents are typically employed to assess the water oxidation half reaction. Here, authors find the silver redox cycle to mediate O2 evolution in photoelectrocatalytic water oxidation with WO3 electrodes.
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Affiliation(s)
- Tae Hwa Jeon
- Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea
| | - Damián Monllor-Satoca
- Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea.,Department of Analytical and Applied Chemistry, Institut Químic de Sarrià (IQS)-School of Engineering, Universitat Ra-mon Llull, Via Augusta, 390, 08017, Barcelona, Spain
| | - Gun-Hee Moon
- Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea
| | - Wooyul Kim
- Department of Chemical and Biological Engineering, Sookmyung Women's University, Seoul, 04310, Korea
| | - Hyoung-Il Kim
- Department of Civil and Environmental Engineering, Yonsei University, Seoul, 03722, Korea
| | - Detlef W Bahnemann
- "Photocatalysis and Nanotechnology", Institut fuer Technische Chemie, Gottfried Wilhelm Leibniz Universitaet Hannover, Hannover, Germany
| | - Hyunwoong Park
- School of Energy Engineering, Kyungpook National University, Daegu, 41566, Korea.
| | - Wonyong Choi
- Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea.
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8
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Wooles AJ, Mills DP, Tuna F, McInnes EJL, Law GTW, Fuller AJ, Kremer F, Ridgway M, Lewis W, Gagliardi L, Vlaisavljevich B, Liddle ST. Uranium(III)-carbon multiple bonding supported by arene δ-bonding in mixed-valence hexauranium nanometre-scale rings. Nat Commun 2018; 9:2097. [PMID: 29844376 PMCID: PMC5974406 DOI: 10.1038/s41467-018-04560-7] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 05/10/2018] [Indexed: 11/09/2022] Open
Abstract
Despite the fact that non-aqueous uranium chemistry is over 60 years old, most polarised-covalent uranium-element multiple bonds involve formal uranium oxidation states IV, V, and VI. The paucity of uranium(III) congeners is because, in common with metal-ligand multiple bonding generally, such linkages involve strongly donating, charge-loaded ligands that bind best to electron-poor metals and inherently promote disproportionation of uranium(III). Here, we report the synthesis of hexauranium-methanediide nanometre-scale rings. Combined experimental and computational studies suggest overall the presence of formal uranium(III) and (IV) ions, though electron delocalisation in this Kramers system cannot be definitively ruled out, and the resulting polarised-covalent U = C bonds are supported by iodide and δ-bonded arene bridges. The arenes provide reservoirs that accommodate charge, thus avoiding inter-electronic repulsion that would destabilise these low oxidation state metal-ligand multiple bonds. Using arenes as electronic buffers could constitute a general synthetic strategy by which to stabilise otherwise inherently unstable metal-ligand linkages.
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Affiliation(s)
- Ashley J Wooles
- School of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - David P Mills
- School of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Floriana Tuna
- School of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Eric J L McInnes
- School of Chemistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Gareth T W Law
- School of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Adam J Fuller
- School of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Felipe Kremer
- Department of Electronic Materials Engineering, Research School of Physics and Engineering, The Australian National University, Canberra, ACT, 2601, Australia
| | - Mark Ridgway
- Department of Electronic Materials Engineering, Research School of Physics and Engineering, The Australian National University, Canberra, ACT, 2601, Australia
| | - William Lewis
- School of Chemistry, University Park, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Laura Gagliardi
- Department of Chemistry, Supercomputing Institute and Chemical Theory Center, University of Minnesota, 207 Pleasant Street SE, Minneapolis, MN, 55455, USA
| | - Bess Vlaisavljevich
- Department of Chemistry, Supercomputing Institute and Chemical Theory Center, University of Minnesota, 207 Pleasant Street SE, Minneapolis, MN, 55455, USA.
- Department of Chemistry, University of South Dakota, 414 E Clark Street, Vermillion, SD, 57069, USA.
| | - Stephen T Liddle
- School of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
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9
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Yurko EO, Gryaznova TV, Kholin KV, Khrizanforova VV, Budnikova YH. External oxidant-free cross-coupling: electrochemically induced aromatic C–H phosphonation of azoles with dialkyl-H-phosphonates under silver catalysis. Dalton Trans 2018; 47:190-196. [DOI: 10.1039/c7dt03650g] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A convenient external oxidant-free method of azole derivatives phosphorylation by dialkyl-H-phosphonates through electrochemical catalytic oxidation in the presence of silver salts (1%) is proposed.
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Affiliation(s)
- E. O. Yurko
- A.E. Arbuzov Institute of Organic and Physical Chemistry
- Kazan Scientific Center
- Russian Academy of Sciences
- Kazan 420088
- Russian Federation
| | - T. V. Gryaznova
- A.E. Arbuzov Institute of Organic and Physical Chemistry
- Kazan Scientific Center
- Russian Academy of Sciences
- Kazan 420088
- Russian Federation
| | - K. V. Kholin
- A.E. Arbuzov Institute of Organic and Physical Chemistry
- Kazan Scientific Center
- Russian Academy of Sciences
- Kazan 420088
- Russian Federation
| | - V. V. Khrizanforova
- A.E. Arbuzov Institute of Organic and Physical Chemistry
- Kazan Scientific Center
- Russian Academy of Sciences
- Kazan 420088
- Russian Federation
| | - Y. H. Budnikova
- A.E. Arbuzov Institute of Organic and Physical Chemistry
- Kazan Scientific Center
- Russian Academy of Sciences
- Kazan 420088
- Russian Federation
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10
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Grzelak A, Gawraczyński J, Jaroń T, Somayazulu M, Derzsi M, Struzhkin V, Grochala W. Persistence of Mixed and Non-intermediate Valence in the High-Pressure Structure of Silver(I,III) Oxide, AgO: A Combined Raman, X-ray Diffraction (XRD), and Density Functional Theory (DFT) Study. Inorg Chem 2017; 56:5804-5812. [DOI: 10.1021/acs.inorgchem.7b00405] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Adam Grzelak
- Faculty of Chemistry, University of Warsaw, ul. Pasteura 1, 02-093 Warsaw, Poland
- Center of New Technologies, University of Warsaw, ul. Banacha 2C, 02-097 Warsaw, Poland
| | - Jakub Gawraczyński
- Faculty of Chemistry, University of Warsaw, ul. Pasteura 1, 02-093 Warsaw, Poland
- Center of New Technologies, University of Warsaw, ul. Banacha 2C, 02-097 Warsaw, Poland
| | - Tomasz Jaroń
- Center of New Technologies, University of Warsaw, ul. Banacha 2C, 02-097 Warsaw, Poland
- Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Road NW, Washington, D.C. 20015, United States
| | - Maddury Somayazulu
- Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Road NW, Washington, D.C. 20015, United States
| | - Mariana Derzsi
- Center of New Technologies, University of Warsaw, ul. Banacha 2C, 02-097 Warsaw, Poland
| | - Viktor Struzhkin
- Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Road NW, Washington, D.C. 20015, United States
| | - Wojciech Grochala
- Center of New Technologies, University of Warsaw, ul. Banacha 2C, 02-097 Warsaw, Poland
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11
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Mazej Z, Goreshnik EA. Crystal structures of dioxonium lanthanoid(III) pentakis(tetrafluoridoborates) of lanthanum and cerium. J Fluor Chem 2017. [DOI: 10.1016/j.jfluchem.2016.05.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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12
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Gilewski TE, Gawraczyński J, Derzsi M, Jagličić Z, Mazej Z, Połczyński P, Jurczakowski R, Leszczyński PJ, Grochala W. [Ag(OH 2 ) 2 ][Ag(SO 4 ) 2 ]: A Hydrate of a Silver(II) Salt. Chemistry 2017; 23:1805-1813. [PMID: 27862472 DOI: 10.1002/chem.201604179] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Indexed: 11/10/2022]
Abstract
When exposed to air at ambient conditions, AgSO4 slowly reacts with moisture, yielding AgSO4 ⋅H2 O. The crystal structure determination (powder data) shows that it may be described as [Ag(OH2 )2 ][Ag(SO4 )2 ], with some sulfate groups being shared between different Ag2+ cations, resembling in that way its Cu2+ analogue. [Ag(OH2 )2 ][Ag(SO4 )2 ], the first hydrate of a compound of Ag2+ , was extensively characterized using many physicochemical methods.
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Affiliation(s)
- Tomasz E Gilewski
- Centre of New Technologies, University of Warsaw, Żwirki i Wigury 93, 02-089, Warsaw, Poland.,Faculty of Chemistry, University of Warsaw, Pasteur 1, 02-093, Warsaw, Poland
| | - Jakub Gawraczyński
- Centre of New Technologies, University of Warsaw, Żwirki i Wigury 93, 02-089, Warsaw, Poland.,Faculty of Chemistry, University of Warsaw, Pasteur 1, 02-093, Warsaw, Poland
| | - Mariana Derzsi
- Centre of New Technologies, University of Warsaw, Żwirki i Wigury 93, 02-089, Warsaw, Poland
| | - Zvonko Jagličić
- University of Ljubljana, Faculty of Civil and Geodetic Engineering, Institute of Mathematics, Physics and Mechanics, Jadranska 19, 1000, Ljubljana, Slovenia
| | - Zoran Mazej
- Department of Inorganic Chemistry and Technology, Jožef Stefan Institute, Jamova 39, 1000, Ljubljana, Slovenia
| | - Piotr Połczyński
- Faculty of Chemistry, University of Warsaw, Pasteur 1, 02-093, Warsaw, Poland
| | - Rafal Jurczakowski
- Faculty of Chemistry, University of Warsaw, Pasteur 1, 02-093, Warsaw, Poland
| | - Piotr J Leszczyński
- Centre of New Technologies, University of Warsaw, Żwirki i Wigury 93, 02-089, Warsaw, Poland
| | - Wojciech Grochala
- Centre of New Technologies, University of Warsaw, Żwirki i Wigury 93, 02-089, Warsaw, Poland
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13
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Mazej Z, Gilewski T, Goreshnik EA, Jagličić Z, Derzsi M, Grochala W. Canted Antiferromagnetism in Two-Dimensional Silver(II) Bis[pentafluoridooxidotungstate(VI)]. Inorg Chem 2016; 56:224-233. [DOI: 10.1021/acs.inorgchem.6b02034] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zoran Mazej
- Department of Inorganic Chemistry and Technology, Jožef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
| | - Tomasz Gilewski
- CENT, University of Warsaw, Żwirki i Wigury 93, 02-089 Warsaw, Poland
- Faculty of Chemistry, University of Warsaw, Pasteur 1, 02-093 Warsaw, Poland
| | - Evgeny A. Goreshnik
- Department of Inorganic Chemistry and Technology, Jožef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
| | - Zvonko Jagličić
- Faculty of Civil and Geodetic
Engineering, and Institute of Mathematics, Physics and Mechanics, University of Ljubljana, Jadranska 19, SI-1000 Ljubljana, Slovenia
| | - Mariana Derzsi
- CENT, University of Warsaw, Żwirki i Wigury 93, 02-089 Warsaw, Poland
| | - Wojciech Grochala
- CENT, University of Warsaw, Żwirki i Wigury 93, 02-089 Warsaw, Poland
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14
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Mazej Z, Goreshnik E. Influence of the Increasing Size of the M
2+
Cation on the Crystal Structures of XeF
5
M(SbF
6
)
3
(M = Ni, Mg, Cu, Zn, Co, Mn, Pd) and (XeF
5
)
3
[Hg(HF)]
2
(SbF
6
)
7. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600317] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Zoran Mazej
- Department of Inorganic Chemistry and Technology Jožef Stefan Institute Jamova 39 1000 Ljubljana Slovenia
| | - Evgeny Goreshnik
- Department of Inorganic Chemistry and Technology Jožef Stefan Institute Jamova 39 1000 Ljubljana Slovenia
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15
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Malinowski PJ, Kurzydłowski D, Grochala W. AgPO2F2 and Ag9(PO2F2)14: the first Ag(i) and Ag(i)/Ag(ii) difluorophosphates with complex crystal structures. Dalton Trans 2015. [PMID: 26200921 DOI: 10.1039/c5dt02004b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of AgF2 with P2O3F4 yields a mixed valence Ag(I)/Ag(II) difluorophosphate salt with AgAg(PO2F2)14 stoichiometry - the first Ag(ii)-PO2F2 system known. This highly moisture sensitive brown solid is thermally stable up to 120 °C, which points at further feasible extension of the chemistry of Ag(ii)-PO2F2 systems. The crystal structure shows a very complex bonding pattern, comprising of polymeric Ag(PO2F2)14(4-) anions and two types of Ag(I) cations. One particular Ag(II) site present in the crystal structure of Ag9(PO2F2)14 is the first known example of square pyramidal penta-coordinated Ag(ii) in an oxo-ligand environment. Ag(i)PO2F2 - the product of the thermal decomposition of Ag9(PO2F2)14 - has also been characterized by thermal analysis, IR spectroscopy and X-ray powder diffraction. It has a complicated crystal structure as well, which consists of infinite 1D [Ag(I)O4/2] chains which are linked to more complex 3D structures via OPO bridges. The PO2F2(-) anions bind to cations in both compounds as bidentate oxo-ligands. The terminal F atoms tend to point inside the van der Waals cavities in the crystal structure of both compounds. All important structural details of both title compounds were corroborated by DFT calculations.
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Affiliation(s)
- Przemysław J Malinowski
- Laboratory of Technology of Novel Functional Materials, Center of New Technologies, University of Warsaw, ul. S. Banacha 2c, 02-097, Warsaw, Poland.
| | - Dominik Kurzydłowski
- Laboratory of Technology of Novel Functional Materials, Center of New Technologies, University of Warsaw, ul. S. Banacha 2c, 02-097, Warsaw, Poland. and Faculty of Mathematics and Natural Sciences, Cardinal Stefan Wyszynski University in Warsaw, ul. Wóycickiego 1/3, 01-938, Warsaw, Poland
| | - Wojciech Grochala
- Laboratory of Technology of Novel Functional Materials, Center of New Technologies, University of Warsaw, ul. S. Banacha 2c, 02-097, Warsaw, Poland.
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