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Tzani S, Pissas M, Psycharis V, Pantazis DA, Sanakis Y, Raptopoulou CP. Synthesis and structural, magnetic and spectroscopic characterization of iron(III) complexes with in situ formed ligands from methyl-2-pyridyl ketone transformations. Dalton Trans 2023; 52:1582-1594. [PMID: 36651584 DOI: 10.1039/d2dt03944c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Reactions of methyl-2-pyridyl ketone, pyCOMe, with FeCl3·6H2O in various solvents gave complexes [Fe4Cl6(OMe)2(L1)2]·0.7MeCN·0.4MeOH (1·0.7MeCN·0.4MeOH) and [Fe3Cl4(bicine)(L2)]·Me2CO·0.2H2O (2·Me2CO·0.2H2O). The ligands (L1)2- = pyCO(Me)CHCOpy (in 1) and (L2)2- = pyCO(Me)CH2CO(OMe)py (in 2) are formed in situ, through an aldol reaction-type mechanism between the carbanion pyC(O)CH2- (formed by the nucleophilic attack of the MeO- in pyCOMe) and pyCOMe which results in the formation of a new C-C bond. The intermediate compound undergoes attack in the -CH2- or -CO- group by a MeO- group, and the new ligands (L1)2- and (L2)2-, respectively, are formed. The molecular structure of 1 consists of three corner-sharing [Fe2O2] rhombic units in cis-arrangement. The two terminal FeIII ions display distorted square pyramidal geometry and the two central FeIII ions are distorted octahedral. The molecular structure of 2 consists of two corner-sharing [Fe2O2] rhombic units, with the two terminal FeIII ions in distorted square pyramidal geometry and the central FeIII in distorted octahedral. The differentiation in the coordination environment of the FeIII ions in 1-2 is reflected in the values of the Mössbauer hyperfine parameters. In agreement with theoretical calculations, the square pyramidal sites exhibit a smaller isomer shift value in comparison to the octahedral sites. Magnetic studies indicate antiferromagnetic interactions leading to an S = 0 ground state in 1 and to an S = 5/2 ground state in 2, consistent with Electron Paramagnetic Resonance spectroscopy. Mössbauer spectra of 2 indicate the onset of relaxation effects below 80 K. At 1.5 K the spectrum of 2 consists of magnetic sextets. The determined hyperfine magnetic fields are consistent with the exchange coupling scheme imposed by the crystal structure of 2. Theoretical calculations shed light on the differences in the electronic structure between the square pyramidal and the octahedral sites.
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Affiliation(s)
- Sofia Tzani
- Institute of Nanoscience and Nanotechnology, NCSR "Demokritos", 15310 Aghia Paraskevi, Athens, Greece.
| | - Michael Pissas
- Institute of Nanoscience and Nanotechnology, NCSR "Demokritos", 15310 Aghia Paraskevi, Athens, Greece.
| | - Vassilis Psycharis
- Institute of Nanoscience and Nanotechnology, NCSR "Demokritos", 15310 Aghia Paraskevi, Athens, Greece.
| | - Dimitrios A Pantazis
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Yiannis Sanakis
- Institute of Nanoscience and Nanotechnology, NCSR "Demokritos", 15310 Aghia Paraskevi, Athens, Greece.
| | - Catherine P Raptopoulou
- Institute of Nanoscience and Nanotechnology, NCSR "Demokritos", 15310 Aghia Paraskevi, Athens, Greece.
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2
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Stamou C, Lada ZG, Chasapis CT, Papaioannou D, Dechambenoit P, Perlepes SP. Indium(III)/2-benzoylpyridine chemistry: interesting indium(III) bromide-assisted transformations of the ligand. Dalton Trans 2022; 51:15771-15782. [PMID: 36178466 DOI: 10.1039/d2dt02851d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reactions of 2-benzoylpyridine, (py)(ph)CO, with InX3 (X = Cl, Br) in EtOH at room temperature have been studied. The InCl3/(py)(ph)CO system has provided access to complex [InCl3{(py)(ph)CO}(EtOH)]·{(py)(ph)CO} (1) and the byproduct {(pyH)(ph)CO}Cl (2). The reaction of InBr3 with (py)(ph)CO has led to a mixture of (L)[InBr4{(py)(ph)CO}] (3) and [In2Br4{(py)(ph)CH(O)}2(EtOH)2] (4), where L+ is the 9-oxo-indolo[1,2-a]pyridinium cation and (py)(ph)CH(O)- is the anion of (pyridin-2-yl)methanol. Based on solubility and crystallisation time differences between the two components of the mixture, complex 4 was isolated in pure form, i.e. free from 3. The formations of the counterion L+ and the coordinated (py)(ph)CH(O)- anion represent clearly InBr3-promoted/assisted transformations. Reaction mechanisms have been proposed for the formation of 2, 3 and 4. Complex 4 could also be isolated by the reaction of InBr3 and pre-formed (py)(ph)CH(OH) in EtOH. The solid-state structures of 1, 3 and 4 were determined by single-crystal X-ray crystallography, while the identity of the salt 2 was confirmed by microanalyses and a variety of spectroscopic techniques, including ESI-MS spectra. In the indium(III) complexes, the metal ions are 6-coordinate with a distorted octahedral geometry. The halogeno groups (Cl-, Br-) in the three complexes are terminal. The (py)(ph)CO molecule behaves as a N,O-bidentate (1.11) ligand in 1 and 3. A terminal EtOH ligand completes the coordination sphere of InIII in 1. The alkoxo oxygen atoms of the two 2.21 (py)(ph)CH(O)- ligands doubly bridge the InIII centers in 4 creating a {InIII2(μ-OR)2}4+ core; a nitrogen atom of one reduced organic ligand, two bromo ions and one terminal EtOH molecule complete the 6-coordination at each metal centre. Complexes 1, 3 and 4 were characterised by IR and Raman spectroscopies, and the data were discussed in terms of their known solid-state structures. Molar conductivity data and 1H NMR spectra were used in an attempt to probe the behaviour of the complexes in DMSO. The to-date observed metal ion-assisted/promoted transformations of (py)(ph)CO are also discussed.
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Affiliation(s)
- Christina Stamou
- Department of Chemistry, University of Patras, 26504 Patras, Greece.
| | - Zoi G Lada
- Institute of Chemical Engineering Sciences (ICE-HT), Foundation for Research and Technology-Hellas (FORTH), P.O. Box 1414, Platani, 26504 Patras, Greece
| | - Christos T Chasapis
- NMR Facility, Instrumental Analysis Laboratory, School of Natural Sciences, University of Patras, 26504 Patras, Greece
| | | | - Pierre Dechambenoit
- Centre de Recherche Paul Pascal, UMR 5031, CNRS, University of Bordeaux, 33600 Pessac, France.
| | - Spyros P Perlepes
- Department of Chemistry, University of Patras, 26504 Patras, Greece. .,Institute of Chemical Engineering Sciences (ICE-HT), Foundation for Research and Technology-Hellas (FORTH), P.O. Box 1414, Platani, 26504 Patras, Greece
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3
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Stamou C, Papawassiliou W, Carvalho JP, Konidaris KF, Bekiari V, Dechambenoit P, Pell AJ, Perlepes SP. Indium(III) in the “Periodic Table” of Di(2-pyridyl) Ketone: An Unprecedented Transformation of the Ligand and Solid-State 115In NMR Spectroscopy as a Valuable Structural Tool. Inorg Chem 2021; 60:4829-4840. [DOI: 10.1021/acs.inorgchem.0c03725] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Christina Stamou
- Department of Chemistry, University of Patras, Patras 26504, Greece
| | - Wassilios Papawassiliou
- Department of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, Svante Arrhenius vag 16C, Stockholm SE-10691, Sweden
| | - José P. Carvalho
- Department of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, Svante Arrhenius vag 16C, Stockholm SE-10691, Sweden
| | | | - Vlasoula Bekiari
- Department of Crop Science, University of Patras, Messolonghi 30200, Greece
| | - Pierre Dechambenoit
- University of Bordeaux, CNRS, Centre de Recherche Paul Pascal, UMR 5031, Pessac 33600, France
| | - Andrew J. Pell
- Department of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, Svante Arrhenius vag 16C, Stockholm SE-10691, Sweden
- Université de Lyon, Centre de RMN à Très Hauts Champs de Lyon, FRE 2034-CNRS, ENS Lyon, UCB Lyon 1, 5 rue de la Doua, Villeurbanne 69100, France
| | - Spyros P. Perlepes
- Department of Chemistry, University of Patras, Patras 26504, Greece
- Foundation for Research and Technology−Hellas (FORTH), Institute of Chemical Engineering Sciences (ICE-HT), Platani,
P.O. Box 1414, Patras 26504, Greece
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4
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Wolff M, Machura B. Rhenium(V)-oxo complexes [ReOX2(N∩O)(EPh3)] (X=Cl, Br, I; E=P, As) – synthesis, structure, spectroscopy, and catalytic properties. REV INORG CHEM 2020. [DOI: 10.1515/revic-2019-0015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractThe present review aims to give a comprehensive survey about the chemistry of rhenium(V)-oxo complexes of general formula [ReOX2(N∩O)(EPh3)], where X=Cl, Br, I, E=P, As, and N∩O stands for uninegative chelating N∩O-ligand, carried out within the last four decades. In addition to the synthesis aspects, the available structural data as well as the results issued from techniques such as infrared and ultraviolet-visible spectroscopies are collected and discussed. Furthermore, a brief description of the applications of these compounds in catalysis is included.
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Affiliation(s)
- Mariusz Wolff
- Uniwersytet Śląski w Katowicach, Instytut Chemii, ul. Szkolna 9, 40-006 Katowice, Poland
- Universität Wien, Institut für Chemische Katalyse, Währinger Straße 38, 1090 Wien, Austria
| | - Barbara Machura
- Uniwersytet Śląski w Katowicach, Instytut Chemii, Department of Crystallography, ul. Szkolna 9, 40-006Katowice, Poland
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Kitos AA, Giannopoulos DP, Papatriantafyllopoulou C, Cunha-Silva L, Perlepes SP. A square planar nickel(II) complex derived from a unique metal ion-promoted transformation of 2-benzoylpyridine. INORG CHEM COMMUN 2016. [DOI: 10.1016/j.inoche.2015.12.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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6
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Kitos AA, Efthymiou CG, Manos MJ, Tasiopoulos AJ, Nastopoulos V, Escuer A, Perlepes SP. Interesting copper(ii)-assisted transformations of 2-acetylpyridine and 2-benzoylpyridine. Dalton Trans 2016; 45:1063-77. [DOI: 10.1039/c5dt03912f] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel CuII-assisted transformations have been observed in the reactions of copper(ii) sources and 2-pyridyl ketones.
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Affiliation(s)
| | | | - Manolis J. Manos
- Department of Chemistry
- University of Cyprus
- 1678 Nicosia
- Cyprus
- Department of Chemistry
| | | | | | - Albert Escuer
- Departament de Quimica Inorganica and Institute of Nanoscience and Nanotechnology (IN2UB)
- Universitat de Barcelona
- 08028 Barcelona
- Spain
| | - Spyros P. Perlepes
- Department of Chemistry
- University of Patras
- 26504 Patras
- Greece
- Institute of Chemical Engineering Sciences
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Majumder S, Naskar JP, Bhattacharya A, Ganguly R, Saha P, Chowdhury S. A new phenylimidorhenium(V) compound containing the 2-[(2-hydroxyethylimino)methyl]phenol Schiff-base ligand: experimental and theoretical aspects. J COORD CHEM 2015. [DOI: 10.1080/00958972.2014.996145] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Smita Majumder
- Department of Chemistry, Tripura University, Tripura, India
| | - Jnan Prakash Naskar
- Department of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata, India
| | | | - Rakesh Ganguly
- Division of Chemistry & Biological Chemistry, SPMS-CBC-01-18D, Nanyang Technological University, Singapore, Singapore
| | - Pinki Saha
- Department of Chemistry, Tripura University, Tripura, India
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Rhenium complexes of di-2-pyridyl ketone, 2-benzoylpyridine and 2-hydroxybenzophenone: A structural and theoretical study. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.06.025] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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Machura B, Mroziński J, Kusz J. Synthesis, characterization and molecular structure of Re(III) complexes containing 2-benzoylpyridine. INORG CHEM COMMUN 2010. [DOI: 10.1016/j.inoche.2009.11.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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10
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Machura B, Wolff M, Świtlicka A, Kruszynski R, Kusz J. Nucleophilic addition of water to 1-isoquinolinyl phenyl ketone. The synthesis, spectroscopic investigation, crystal and molecular structure and DFT calculations of [ReOBr2(iquinpk-OH)(PPh3)]. INORG CHEM COMMUN 2009. [DOI: 10.1016/j.inoche.2009.06.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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