|
1
|
Stamos NA, Ferentinos E, Chrysina M, Raptopoulou CP, Psycharis V, Sanakis Y, Pantazis DA, Kyritsis P, Mitrikas G. Unusual 31P Hyperfine Strain Effects in a Conformationally Flexible Cu(II) Complex Revealed by Two-Dimensional Pulse EPR Spectroscopy. Inorg Chem 2020; 59:3666-3676. [PMID: 32077279 DOI: 10.1021/acs.inorgchem.9b03237] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Strain effects on g and metal hyperfine coupling tensors, A, are often manifested in Electron Paramagnetic Resonance (EPR) spectra of transition metal complexes, as a result of their intrinsic and/or solvent-mediated structural variations. Although distributions of these tensors are quite common and well understood in continuous-wave (cw) EPR spectroscopy, reported strain effects on ligand hyperfine coupling constants are rather scarce. Here we explore the case of a conformationally flexible Cu(II) complex, [Cu{Ph2P(O)NP(O)Ph2-κ2O,O'}2], bearing P atoms in its second coordination sphere and exhibiting two structurally distinct CuO4 coordination spheres, namely a square planar and a tetrahedrally distorted one, as revealed by X-ray crystallography. The Hyperfine Sublevel Correlation (HYSCORE) spectra of this complex exhibit 31P correlation ridges that have unusual inverse or so-called "boomerang" shapes and features that cannot be reproduced by standard simulation procedures assuming only one set of magnetic parameters. Our work shows that a distribution of isotropic hyperfine coupling constants (hfc) spanning a range between negative and positive values is necessary in order to describe in detail the unusual shapes of HYSCORE spectra. By employing DFT calculations we show that these hfc correspond to molecules showing variable distortions from square planar to tetrahedral geometry, and we demonstrate that line shape analysis of such HYSCORE spectra provides new insight into the conformation-dependent spectroscopic response of the spin system under investigation.
Collapse
Affiliation(s)
- Nikolaos-Angelos Stamos
- Institute of Nanoscience and Nanotechnology, N.C.S.R. "Demokritos", 15310 Athens, Greece.,Inorganic Chemistry Laboratory, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 15771 Athens, Greece
| | - Eleftherios Ferentinos
- Inorganic Chemistry Laboratory, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 15771 Athens, Greece
| | - Maria Chrysina
- Institute of Nanoscience and Nanotechnology, N.C.S.R. "Demokritos", 15310 Athens, Greece
| | | | - Vassilis Psycharis
- Institute of Nanoscience and Nanotechnology, N.C.S.R. "Demokritos", 15310 Athens, Greece
| | - Yiannis Sanakis
- Institute of Nanoscience and Nanotechnology, N.C.S.R. "Demokritos", 15310 Athens, Greece
| | - Dimitrios A Pantazis
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Panayotis Kyritsis
- Inorganic Chemistry Laboratory, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 15771 Athens, Greece
| | - George Mitrikas
- Institute of Nanoscience and Nanotechnology, N.C.S.R. "Demokritos", 15310 Athens, Greece
| |
Collapse
|
|
2
|
Tsoukala M, Ioannou PC, Panagiotopoulou A, Pelecanou M, Raptopoulou CP, Psycharis V, Kyritsis P. Self-assembled tetrameric H2O clusters in the crystal lattice of [Cu(μ2-OH){Ph2P(O)NP(O)Ph2-κ1O,O′}(1,10-phen-κ2N,N′)]2·2H2O. J COORD CHEM 2019. [DOI: 10.1080/00958972.2018.1532507] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Maria Tsoukala
- Laboratory of Inorganic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, Athens, Greece
| | - Polydoros-Chrysovalantis Ioannou
- Laboratory of Inorganic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, Athens, Greece
| | - Angeliki Panagiotopoulou
- Institute of Biosciences & Applications, National Center for Scientific Research “Demokritos”, Aghia Paraskevi, Athens, Greece
| | - Maria Pelecanou
- Institute of Biosciences & Applications, National Center for Scientific Research “Demokritos”, Aghia Paraskevi, Athens, Greece
| | - Catherine P. Raptopoulou
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research “Demokritos”, Aghia Paraskevi, Athens, Greece
| | - Vassilis Psycharis
- Laboratory of Inorganic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, Athens, Greece
| | - Panayotis Kyritsis
- Laboratory of Inorganic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, Athens, Greece
| |
Collapse
|
|
3
|
Magnetostructural correlations in S = 1 trans-[Ni{(OPPh2)(EPPh2)N}2(dmso)2], E = S, Se, and related complexes. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.05.032] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
|
4
|
Ferentinos E, Chatziefthimiou S, Boudalis AK, Pissas M, Mathies G, Gast P, Groenen EJJ, Sanakis Y, Kyritsis P. The [Fe{(SePPh2
)2
N}2
] Complex Revisited: X-ray Crystallography, Magnetometry, High-Frequency EPR, and Mössbauer Studies Reveal Its Tetrahedral FeII
Se4
Coordination Sphere. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201701459] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Eleftherios Ferentinos
- Inorganic Chemistry Laboratory; Department of Chemistry; National and Kapodistrian University of Athens; Panepistimiopolis 15771 Athens Greece
| | - Spyros Chatziefthimiou
- Institute of Nanoscience and Nanotechnology; N.C.S.R. “Demokritos”; Aghia Paraskevi 15310 Attiki Greece
| | - Athanassios K. Boudalis
- Institute of Nanoscience and Nanotechnology; N.C.S.R. “Demokritos”; Aghia Paraskevi 15310 Attiki Greece
| | - Michael Pissas
- Institute of Nanoscience and Nanotechnology; N.C.S.R. “Demokritos”; Aghia Paraskevi 15310 Attiki Greece
| | - Guinevere Mathies
- Huygens-Kamerlingh Onnes Laboratory; Department of Physics; Leiden University; Niels Bohrweg 2 2333 CA Leiden The Netherlands
| | - Peter Gast
- Huygens-Kamerlingh Onnes Laboratory; Department of Physics; Leiden University; Niels Bohrweg 2 2333 CA Leiden The Netherlands
| | - Edgar J. J. Groenen
- Huygens-Kamerlingh Onnes Laboratory; Department of Physics; Leiden University; Niels Bohrweg 2 2333 CA Leiden The Netherlands
| | - Yiannis Sanakis
- Institute of Nanoscience and Nanotechnology; N.C.S.R. “Demokritos”; Aghia Paraskevi 15310 Attiki Greece
| | - Panayotis Kyritsis
- Inorganic Chemistry Laboratory; Department of Chemistry; National and Kapodistrian University of Athens; Panepistimiopolis 15771 Athens Greece
| |
Collapse
|
|
5
|
Levesanos N, Liyanage WPR, Ferentinos E, Raptopoulos G, Paraskevopoulou P, Sanakis Y, Choudhury A, Stavropoulos P, Nath M, Kyritsis P. Investigating the Structural, Spectroscopic, and Electrochemical Properties of [Fe{(EPiPr2)2N}2] (E = S, Se) and the Formation of Iron Selenides by Chemical Vapor Deposition. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600833] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Nikolaos Levesanos
- Inorganic Chemistry Laboratory; Department of Chemistry; National and Kapodistrian University of Athens; Panepistimiopolis 15771 Athens Greece
| | - Wipula P. R. Liyanage
- Department of Chemistry; Missouri University of Science and Technology; 65409 Rolla Missouri USA
| | - Eleftherios Ferentinos
- Inorganic Chemistry Laboratory; Department of Chemistry; National and Kapodistrian University of Athens; Panepistimiopolis 15771 Athens Greece
| | - Grigorios Raptopoulos
- Department of Chemistry; Missouri University of Science and Technology; 65409 Rolla Missouri USA
| | - Patrina Paraskevopoulou
- Department of Chemistry; Missouri University of Science and Technology; 65409 Rolla Missouri USA
| | - Yiannis Sanakis
- Institute of Nanoscience and Nanotechnolgy; N.C.S.R. “Demokritos”; Aghia Paraskevi 15310 Attiki Greece
| | - Amitava Choudhury
- Department of Chemistry; Missouri University of Science and Technology; 65409 Rolla Missouri USA
| | - Pericles Stavropoulos
- Department of Chemistry; Missouri University of Science and Technology; 65409 Rolla Missouri USA
| | - Manashi Nath
- Department of Chemistry; Missouri University of Science and Technology; 65409 Rolla Missouri USA
| | - Panayotis Kyritsis
- Inorganic Chemistry Laboratory; Department of Chemistry; National and Kapodistrian University of Athens; Panepistimiopolis 15771 Athens Greece
| |
Collapse
|
|
6
|
Abstract
This review is to focus on computational studies on hydroformylation and theoretical coordination chemistry results related to hydroformylation.
Collapse
Affiliation(s)
- Tamás Kégl
- Department of Inorganic Chemistry
- University of Pécs and János Szentágothai Science Center
- MTA-PTE Research Group for Selective Chemical Syntheses
- H-7624 Pécs
- Hungary
| |
Collapse
|
|
7
|
Cheung WM, Chiu WH, Sung HHY, Williams ID, Leung WH. Oxidative Addition of Rhodium Complexes Containing a Dithioimidodiphosphinate Ligand: Facile Reductive Elimination of Methyl Iodide from a Tetranuclear Rhodium Sulfido Cluster. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402080] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
|
8
|
Grigoropoulos A, Pissas M, Papatolis P, Psycharis V, Kyritsis P, Sanakis Y. Spin-Relaxation Properties of a High-Spin Mononuclear MnIIIO6-Containing Complex. Inorg Chem 2013; 52:12869-71. [DOI: 10.1021/ic402042e] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alexios Grigoropoulos
- Inorganic Chemistry Laboratory, Department
of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 15771 Athens, Greece
| | - Michael Pissas
- Institute of Advanced Materials, Physicochemical Processes, Nanotechnology and Microsystems, NCSR Demokritos, 15310 Ag. Paraskevi,
Attiki, Greece
| | - Patroklos Papatolis
- Inorganic Chemistry Laboratory, Department
of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 15771 Athens, Greece
| | - Vassilis Psycharis
- Institute of Advanced Materials, Physicochemical Processes, Nanotechnology and Microsystems, NCSR Demokritos, 15310 Ag. Paraskevi,
Attiki, Greece
| | - Panayotis Kyritsis
- Inorganic Chemistry Laboratory, Department
of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, 15771 Athens, Greece
| | - Yiannis Sanakis
- Institute of Advanced Materials, Physicochemical Processes, Nanotechnology and Microsystems, NCSR Demokritos, 15310 Ag. Paraskevi,
Attiki, Greece
| |
Collapse
|