(6-(cyclohexylamino)-1,3-dimethyl-5(2-pyridyl)furo[2,3-d]pyrimidine-2,4(1H,3H)-dione) abbreviated as CDP was synthesized and characterized. Ti(IV), Zn(II), Fe(III), and Pd(II) metal complexes of this ligand are prepared by the reaction of salts of Ti(IV), Zn(II), Fe(III), and Pd(II) with CDP in acetonitrile. Characterization of the ligand and its complexes was made by microanalyses, FT-IR, (1)H NMR, (13)C NMR, and UV-Visible spectroscopy. All complexes were characterized by several techniques using elemental analysis (C, H, N), FT-IR, electronic spectra, and molar conductance measurements. The elemental analysis data suggest the stoichiometry to be 1:1 [M:L] ratio formation. The molar conductance measurements reveal the presence of 1:1 electrolytic nature complexes. These new complexes showed excellent antitumor activity against two kinds of cancer cells that are K562 (human chronic myeloid leukemia) cells and Jurkat (human T lymphocyte carcinoma) cells.
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http://dx.doi.org/10.1155/2008/501021 | DOI Listing |
Int J Mol Sci
June 2024
Faculty of Chemistry and Pharmacy, Sofia University "St. Kliment Ohridski", 1, J. Bourchier, 1164 Sofia, Bulgaria.
"Core/shell" composites are based on a ferrite core coated by two layers with different properties, one of them is an isolator, SiO, and the other is a semiconductor, TiO. These composites are attracting interest because of their structure, photocatalytic activity, and magnetic properties. Nanocomposites of the "core/shell" МFeO/SiO/TiO (М = Zn(II), Co(II)) type are synthesized with a core of MFeO produced by two different methods, namely the sol-gel method (SG) using propylene oxide as a gelling agent and the hydrothermal method (HT).
View Article and Find Full Text PDFAdv Mater
June 2023
Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan.
High-entropy layered oxide materials containing various metals that exhibit smooth voltage curves and excellent electrochemical performances have attracted attention in the development of positive electrode materials for sodium-ion batteries. However, a smooth voltage curve can be obtained by suppression of the Na -vacancy ordering, and therefore, transition metal slabs do not need to be more multi-element than necessary. Here, the Na -vacancy ordering is found to be disturbed by dual substitution of Ti for Mn and Zn for Ni in P2-Na [Ni Mn ]O .
View Article and Find Full Text PDFACS Omega
August 2022
Amity School of Applied Sciences, Amity University Haryana, Gurugram 122413, India.
The synthesis and characterization of a new octahedral Zr(IV) complex of oxygen-depleted ,-type calixarene ligand comprising two distal-functionalized pyrazole rings have been reported. The cone shape and structure of the prepared complex were confirmed univocally by single-crystal X-ray diffraction and NMR studies. The Zr metal lies at 2.
View Article and Find Full Text PDFChem Biodivers
March 2022
Department of Chemistry, Faculty of Art and Science, Harran University, Sanlıurfa, 63190, Turkey.
In this work, novel vic-dioxime ligand (LH ) containing bound to the N -oxime core moiety and its complexes with Cu(II), Ni(II), Ti(IV), VO(IV), and Zn(II) salts have been studied. The structure of the ligand and its complexes were successfully synthesized and characterized using NMR ( H and C), LC/MS/MS spectrometer, FT-IR and UV/VIS spectroscopy, melting point, and magnetic susceptibility measurements. Vic-dioxime ligand (LH ) (1) and its metal complexes ([Cu(LH) ] (2), [Ni(LH) ] (3), [Ti(LH) ]Cl (4), [VO(LH) ] (5), and [Zn(LH) ] (6), respectively) were tested for them in-vitro antibacterial and antioxidant activities.
View Article and Find Full Text PDFPhys Chem Chem Phys
September 2020
IBM Research Zurich, Säumerstrasse 4, 8803 Rüschlikon, Switzerland.
The vast chemical space of metal and ligand combinations in Transition Metal Complexes (TMCs) gives rise to a rich variety of electronic excited states with local and non-local character such as intra-ligand (IL), metal-centered (MC), metal-to-ligand (MLCT) or ligand-to-metal charge-transfer (LMCT) states. Those features are equally found in metal organic frameworks (MOFs), defined as modular materials built from metal-nodes connected through organic-ligands. Because of the electronic and structural complexity of MOFs, the computational description of their excited states is a formidable challenge for which two different approaches have been usually followed: the solid state and the molecular perspective.
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