1
|
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.
Collapse
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.
| |
Collapse
|
2
|
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.
Collapse
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
| |
Collapse
|
3
|
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
| |
Collapse
|
4
|
Bandopadhyay N, Joshi M, Armaković S, Armaković SJ, Das HS, Roy Choudhury A, Biswas B. Unprecedented copper( ii) coordination induced nucleophilic cleavage of a quinoxaline heterocycle: structural and computational studies. CrystEngComm 2021. [DOI: 10.1039/d1ce00569c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
This research work deals with the unprecedented copper(ii) induced nucleophilic cleavage of a quinoxaline heterocycle with spectroscopic, structural and computational studies.
Collapse
Affiliation(s)
| | - Mayank Joshi
- Department of Chemical Sciences
- Indian Institute of Science Education and Research, Mohali
- Mohali
- India
| | - Stevan Armaković
- Faculty of Sciences
- Department of Physics
- University of Novi Sad
- Novi Sad
- Serbia
| | - Sanja J. Armaković
- Faculty of Sciences
- Department of Chemistry, Biochemistry and Environmental Protection
- University of Novi Sad
- Novi Sad
- Serbia
| | - Hari Sankar Das
- Department of Chemistry
- University of North Bengal
- Darjeeling-734013
- India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences
- Indian Institute of Science Education and Research, Mohali
- Mohali
- India
| | - Bhaskar Biswas
- Department of Chemistry
- University of North Bengal
- Darjeeling-734013
- India
| |
Collapse
|
5
|
Li YL, Gan XL, Zhu RP, Wang X, Liao DF, Jin J, Huang Z. Anticancer Activity of Platinum (II) Complex with 2-Benzoylpyridine by Induction of DNA Damage, S-Phase Arrest, and Apoptosis. Anticancer Agents Med Chem 2019; 20:504-517. [PMID: 31721706 DOI: 10.2174/1871520619666191112114340] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Revised: 10/03/2019] [Accepted: 10/15/2019] [Indexed: 11/22/2022]
Abstract
OBJECTIVE To overcome the disadvantages of cisplatin, numerous platinum (Pt) complexes have been prepared. However, the anticancer activity and mechanism of Pt(II) complexed with 2-benzoylpyridine [Pt(II)- Bpy]: [PtCl2(DMSO)L] (DMSO = dimethyl sulfoxide, L = 2-benzoylpyridine) in cancer cells remain unknown. METHODS Pt(II)-Bpy was synthesized and characterized by spectrum analysis. Its anticancer activity and underlying mechanisms were demonstrated at the cellular, molecular, and in vivo levels. RESULTS Pt(II)-Bpy inhibited tumor cell growth, especially HepG2 human liver cancer cells, with a halfmaximal inhibitory concentration of 9.8±0.5μM, but with low toxicity in HL-7702 normal liver cells. Pt(II)- Bpy induced DNA damage, which was demonstrated through a marked increase in the expression of cleavedpoly (ADP ribose) polymerase (PARP) and gamma-H2A histone family member X and a decrease in PARP expression. The interaction of Pt(II)-Bpy with DNA at the molecular level was most likely through an intercalation mechanism, which might be evidence of DNA damage. Pt(II)-Bpy initiated cell cycle arrest at the S phase in HepG2 cells. It also caused severe loss of the mitochondrial membrane potential; a decrease in the expression of caspase-9 and caspase-3; an increase in reactive oxygen species levels; the release of cytochrome c and apoptotic protease activation factor; and the activation of caspase-9 and caspase-3 in HepG2 cells, which in turn resulted in apoptosis. Meanwhile, changes in p53 and related proteins were observed including the upregulation of p53, the phosphorylation of p53, p21, B-cell lymphoma-2-associated X protein, and NOXA; and the downregulation of B-cell lymphoma 2. Moreover, Pt(II)-Bpy displayed marked inhibitory effects on tumor growth in the HepG2 nude mouse model. CONCLUSION Pt(II)-Bpy is a potential candidate for cancer chemotherapy.
Collapse
Affiliation(s)
- Yu-Lan Li
- Laboratory of Hepatobiliary and Pancreatic Surgery, the Affiliated Hospital of Guilin Medical University, Guilin 541001, Guangxi, China.,Guangxi Key Laboratory of Molecular Medicine in Liver Injury and Repair, Guilin Medical University, Guilin 541001, Guangxi, China.,China-USA Lipids in Health and Disease Research Center, Guilin Medical University, Guilin 541001, Guangxi, China.,Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, China
| | - Xin-Li Gan
- Laboratory of Hepatobiliary and Pancreatic Surgery, the Affiliated Hospital of Guilin Medical University, Guilin 541001, Guangxi, China
| | - Rong-Ping Zhu
- Laboratory of Hepatobiliary and Pancreatic Surgery, the Affiliated Hospital of Guilin Medical University, Guilin 541001, Guangxi, China.,Department of Emergency Traumatic Surgery, the Affiliated Ganzhou Hospital of Nanchang University (Ganzhou People's Hospital), Ganzhou 341000, Jiangxi, China
| | - Xuehong Wang
- Department of Pathology, the Affiliated Hospital of Guilin Medical University, Guilin 541001, Guangxi, China
| | - Duan-Fang Liao
- Division of Stem Cell Regulation and Application, State Key Laboratory of Chinese Medicine Powder and Medicine Innovation in Hunan (Incubation), Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Junfei Jin
- Laboratory of Hepatobiliary and Pancreatic Surgery, the Affiliated Hospital of Guilin Medical University, Guilin 541001, Guangxi, China.,Guangxi Key Laboratory of Molecular Medicine in Liver Injury and Repair, Guilin Medical University, Guilin 541001, Guangxi, China.,China-USA Lipids in Health and Disease Research Center, Guilin Medical University, Guilin 541001, Guangxi, China
| | - Zhaoquan Huang
- Department of Pathology, the Affiliated Hospital of Guilin Medical University, Guilin 541001, Guangxi, China
| |
Collapse
|
6
|
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]
|
7
|
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.
Collapse
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
| |
Collapse
|
8
|
Complexation behavior of imidazoline hydrazones towards Cu2+ and Hg2+: Structure, sensing and DNA binding studies. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.02.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
9
|
Shit S, Yadava U, Saha D, Fröhlich R. 2,2′-Bipyridyl-acetylphenolato mixed ligand copper(II) complexes: syntheses, characterizations and catalytic activity in styrene epoxidation. J COORD CHEM 2012. [DOI: 10.1080/00958972.2012.747088] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Shyamapada Shit
- a Department of Chemistry , Krishnagar Government College , Nadia , India
| | - Umesh Yadava
- b Department of Physics , DDU Gorakhpur University , Gorakhpur , India
| | - Debraj Saha
- c Department of Chemistry , Jadavpur University , Kolkata , India
| | - Roland Fröhlich
- d Organisch-Chemisches Institut, Universität Münster , Münster , Germany
| |
Collapse
|
10
|
Sen S, Sarkar S, Chattopadhyay B, Moirangthem A, Basu A, Dhara K, Chattopadhyay P. A ratiometric fluorescent chemosensor for iron: discrimination of Fe2+ and Fe3+ and living cell application. Analyst 2012; 137:3335-42. [PMID: 22673561 DOI: 10.1039/c2an35258c] [Citation(s) in RCA: 150] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A newly designed probe, 6-thiophen-2-yl-5,6-dihydrobenzo[4,5]imidazo-[1,2-c] quinazoline (HL(1)) behaves as a highly selective ratiometric fluorescent sensor for Fe(2+) at pH 4.0-5.0 and Fe(3+) at pH 6.5-8.0 in acetonitrile-HEPES buffer (1/4) (v/v) medium. A decrease in fluorescence at 412 nm and increase in fluorescence at 472 nm with an isoemissive point at 436 nm with the addition of Fe(2+) salt solution is due to the formation of mononuclear Fe(2+) complex [Fe(II)(HL)(ClO(4))(2)(CH(3)CN)(2)] (1) in acetonitrile-HEPES buffer (100 mM, 1/4, v/v) at pH 4.5 and a decrease in fluorescence at 412 nm and increase in fluorescence at 482 nm with an isoemissive point at 445 nm during titration by Fe(3+) salt due to the formation of binary Fe(3+) complex, [Fe(III)(L)(2)(ClO(4))(H(2)O)] (2) with co-solvent at biological pH 7.4 have been established. Binding constants (K(a)) in the solution state were calculated to be 3.88 × 10(5) M(-1) for Fe(2+) and 0.21 × 10(3) M(-1/2) for Fe(3+) and ratiometric detection limits for Fe(2+) and Fe(3+) were found to be 2.0 μM and 3.5 μM, respectively. The probe is a "naked eye" chemosensor for two states of iron. Theoretical calculations were studied to establish the configurations of probe-iron complexes. The sensor is efficient for detecting Fe(3+)in vitro by developing a good image of the biological organelles.
Collapse
Affiliation(s)
- Supriti Sen
- Department of Chemistry, Burdwan University, Golapbag, Burdwan-713104, West Bengal, India
| | | | | | | | | | | | | |
Collapse
|