Two mononuclear Schiff base manganese(III) complexes, [MnL(N3)(OH2)]·CH3OH (1) and [MnL(NCS)(OH2)] · H2O (2), where L is the dianionic form of N,N'-bis(5-nitrosalicylidene)ethane-1,2-diamine, have been prepared and characterized by elemental analysis, IR and UV-Vis spectroscopy and single crystal X-ray diffraction. The Mn atom in each complex is in an octahedral coordination. Molecules of the complexes are linked through intermolecular hydrogen bonds. Catalytic properties for epoxidation of styrene by the complexes using PhIO and NaOCl as oxidant have been studied.
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http://dx.doi.org/10.17344/acsi.2017.3416 | DOI Listing |
Molecules
November 2024
Department of Physics, College of Science, Qassim University, Qassim 51452, Saudi Arabia.
In the current work, chloro(-tetrakis(phenyl)porphyrin) manganese(III) [Mn(TPP)Cl] was synthesized following two steps: the preparation of -tetraphenylporphyrin (HTPP) and the insertion of manganese into the free porphyrin HTPP. The compounds were characterized using SEM, FT-IR, UV, TGA/DTA, and XRD analyses. Manganese(III) -porphyrins exhibited hyper-type electronic spectra with a half-vacant metal orbital with symmetry, such as [dπ:dxz and dyz].
View Article and Find Full Text PDFSensors (Basel)
September 2024
Institute of Chemistry and Technical Electrochemistry, Poznan University of Technology, Berdychowo 4, 60-965 Poznan, Poland.
Molecules
May 2024
Department of Chemistry, Faculty of Art and Sciences, Kocaeli University, 41380 Umuttepe, Türkiye.
Natural products play an important part in synthetic chemistry since they have many pharmacological properties and are used as active drug compounds in pharmaceutical chemistry. However, synthesis of these complex molecules is difficult due to the requirement of various synthetic steps, which include highly regio- and stereoselectivity. Therefore, oxidative radical cyclization assisted by manganese(III) acetate serves as an important step in obtaining spiro-, tricyclic, tetracyclic, and polycyclic derivatives of these compounds.
View Article and Find Full Text PDFChem Asian J
July 2024
G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Ivanovo, Russia.
Self-assembly of new donor-acceptor systems based on (5,10,15,20-tetraphenylporphinato)manganese(III)/(5,10,15,20-tetra-4-tert-butylphenylporphinato)manganese(III)/(octakis(4-tert-butylphenyl)tetraazaporphinato)manganese(III) acetate ((AcO)MnTPP/(AcO)MnTBPP/(AcO)MnTAP) and 4-(10-phenylanthracen-9-yl)pyridine (PyAn) was studied using fluorescence spectroscopy and mass spectrometry. It was found that the coordination complexes of 1 : 1 composition (dyads) are formed in toluene. The spectral properties, the chemical structures and redox behavior of the dyads were described using H NMR, IR, ESR spectroscopy and cyclic voltammetry, respectively.
View Article and Find Full Text PDFJ Am Chem Soc
May 2024
Department of Chemistry, University at Buffalo, State University of New York, Buffalo, New York 14260, United States.
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