0000000001299192
AUTHOR
Md. Kamal Hossain
Hydrogen-atom and oxygen-atom transfer reactivities of iron(iv)-oxo complexes of quinoline-substituted pentadentate ligands
A series of iron(II) complexes with the general formula [FeII(L2-Qn)(L)]n+ (n = 1, L = F−, Cl−; n = 2, L = NCMe, H2O) have been isolated and characterized. The X-ray crystallographic data reveals that metal–ligand bond distances vary with varying ligand field strengths of the sixth ligand. While the complexes with fluoride, chloride and water as axial ligand are high spin, the acetonitrile-coordinated complex is in a mixed spin state. The steric bulk of the quinoline moieties forces the axial ligands to deviate from the Fe–Naxial axis. A higher deviation/tilt is noted for the high spin complexes, while the acetonitrile coordinated complex displays least deviation. This deviation from linear…
An experimental and theoretical study of a heptacoordinated tungsten(VI) complex of a noninnocent phenylenediamine bis(phenolate) ligand
[W(N2O2)(HN2O2)] (H4N2O2 = N,N′-bis(3,5-di-tert-butyl-2-hydroxyphenyl)-1,2-phenylenediamine) with a noninnocent ligand was formed by reaction of the alkoxide precursor [W(eg)3] (eg = the 1,2-ethanediolate dianion) with two equivalents of ligand. The phenol groups on one of the ligands are completely deprotonated and the ligand coordinates in a tetradentate fashion, whereas the other ligand is tridentate with one phenol having an intact OH group. The molecular structure, magnetic measurements, EPR spectroscopy, and density functional theory calculations indicate that the complex is a stable radical with the odd electron situated on the tridentate amidophenoxide ligand. The formal oxidation s…
Dioxomolybdenum(VI) complexes of hydrazone phenolate ligands -syntheses and activities in catalytic oxidation reactions
The new cis-dioxomolybdenum(VI) complexes [MoO2(L2)(H2O)] (2) and [MoO2(L3) (H2O)] (3) containing the tridentate hydrazone-based ligands (H2L2 = N'-(3,5-di-tert-butyl-2-hydroxybenzylidene)-4-methylbenzohydrazide and H2L3 = N'-(2-hydroxybenzylidene)-2-(hydroxyimino)propanehydrazide) have been synthesised and characterized via IR, 1H and 13C NMR spectroscopy, mass spectrometry, and single crystal X-ray diffraction analysis. The catalytic activities of complexes 2 and 3, and the analogous known complex [MoO2(L1)(H2O)] (1) (H2L1 = N'-(2-hydroxybenzylidene)-4-methylbenzohydrazide) have been evaluated for various oxidation reactions, viz. oxygen atom transfer from dimethyl sulfoxide to triphenylp…
An experimental and theoretical study of a heptacoordinated tungsten(VI) complex of a noninnocent phenylenediamine bis(phenolate) ligand
Abstract [W(N2O2)(HN2O2)] (H4N2O2 = N,N′-bis(3,5-di-tert-butyl-2-hydroxyphenyl)-1,2-phenylenediamine) with a noninnocent ligand was formed by reaction of the alkoxide precursor [W(eg)3] (eg = the 1,2-ethanediolate dianion) with two equivalents of ligand. The phenol groups on one of the ligands are completely deprotonated and the ligand coordinates in a tetradentate fashion, whereas the other ligand is tridentate with one phenol having an intact OH group. The molecular structure, magnetic measurements, EPR spectroscopy, and density functional theory calculations indicate that the complex is a stable radical with the odd electron situated on the tridentate amidophenoxide ligand. The formal ox…
Syntheses and catalytic oxotransfer activities of oxo molybdenum(vi) complexes of a new aminoalcohol phenolate ligand.
The new aminoalcohol phenol 2,4-di-tert-butyl-6-(((2-hydroxy-2-phenylethyl)amino)methyl)phenol (H2L) was prepared by a facile solvent-free synthesis and used as a tridentate ligand for new cis-dioxomolybdenum(vi)(L) complexes. In the presence of a coordinating solvent (DMSO, MeOH, pyridine), the complexes crystallise as monomeric solvent adducts while in the absence of such molecules, a trimer with asymmetric Mo[double bond, length as m-dash]O→Mo bridges crystallises. The complexes can catalyse epoxidation of cis-cyclooctene and sulfoxidation of methyl-p-tolylsulfide, using tert-butyl hydroperoxide as oxidant.
CCDC 1983680: Experimental Crystal Structure Determination
Related Article: Erick Ramírez, Md. Kamal Hossain, Marcos Flores-Alamo, Matti Haukka, Ebbe Nordlander, Ivan Castillo|2020|Eur.J.Inorg.Chem.|2020|2798|doi:10.1002/ejic.202000488
CCDC 1502861: Experimental Crystal Structure Determination
Related Article: Md. Kamal Hossain, Anja Köhntopp, Matti Haukka, Michael G. Richmond, Ari Lehtonen, Ebbe Nordlander|2020|Polyhedron|178|114312|doi:10.1016/j.poly.2019.114312
CCDC 1983678: Experimental Crystal Structure Determination
Related Article: Erick Ramírez, Md. Kamal Hossain, Marcos Flores-Alamo, Matti Haukka, Ebbe Nordlander, Ivan Castillo|2020|Eur.J.Inorg.Chem.|2020|2798|doi:10.1002/ejic.202000488
CCDC 1847230: Experimental Crystal Structure Determination
Related Article: Md. Kamal Hossain, Jörg A. Schachner, Matti Haukka, Nadia C. Mösch-Zanetti, Ebbe Nordlander, Ari Lehtonen|2019|Inorg.Chim.Acta|486|17|doi:10.1016/j.ica.2018.10.012
CCDC 1523698: Experimental Crystal Structure Determination
Related Article: Md. Kamal Hossain, Jörg A. Schachner, Matti Haukka, Ari Lehtonen, Nadia C. Mösch-Zanetti, Ebbe Nordlander|2017|Polyhedron|134|275|doi:10.1016/j.poly.2017.04.036
CCDC 1847233: Experimental Crystal Structure Determination
Related Article: Md. Kamal Hossain, Jörg A. Schachner, Matti Haukka, Nadia C. Mösch-Zanetti, Ebbe Nordlander, Ari Lehtonen|2019|Inorg.Chim.Acta|486|17|doi:10.1016/j.ica.2018.10.012
CCDC 1983677: Experimental Crystal Structure Determination
Related Article: Erick Ramírez, Md. Kamal Hossain, Marcos Flores-Alamo, Matti Haukka, Ebbe Nordlander, Ivan Castillo|2020|Eur.J.Inorg.Chem.|2020|2798|doi:10.1002/ejic.202000488
CCDC 1518695: Experimental Crystal Structure Determination
Related Article: Md. Kamal Hossain, Matti Haukka, George C. Lisensky, Ari Lehtonen, Ebbe Nordlander|2019|Inorg.Chim.Acta|487|112|doi:10.1016/j.ica.2018.11.049
CCDC 1523699: Experimental Crystal Structure Determination
Related Article: Md. Kamal Hossain, Jörg A. Schachner, Matti Haukka, Ari Lehtonen, Nadia C. Mösch-Zanetti, Ebbe Nordlander|2017|Polyhedron|134|275|doi:10.1016/j.poly.2017.04.036
CCDC 1518696: Experimental Crystal Structure Determination
Related Article: Md. Kamal Hossain, Matti Haukka, George C. Lisensky, Ari Lehtonen, Ebbe Nordlander|2019|Inorg.Chim.Acta|487|112|doi:10.1016/j.ica.2018.11.049
CCDC 1983674: Experimental Crystal Structure Determination
Related Article: Erick Ramírez, Md. Kamal Hossain, Marcos Flores-Alamo, Matti Haukka, Ebbe Nordlander, Ivan Castillo|2020|Eur.J.Inorg.Chem.|2020|2798|doi:10.1002/ejic.202000488
CCDC 1983676: Experimental Crystal Structure Determination
Related Article: Erick Ramírez, Md. Kamal Hossain, Marcos Flores-Alamo, Matti Haukka, Ebbe Nordlander, Ivan Castillo|2020|Eur.J.Inorg.Chem.|2020|2798|doi:10.1002/ejic.202000488
CCDC 1847231: Experimental Crystal Structure Determination
Related Article: Md. Kamal Hossain, Jörg A. Schachner, Matti Haukka, Nadia C. Mösch-Zanetti, Ebbe Nordlander, Ari Lehtonen|2019|Inorg.Chim.Acta|486|17|doi:10.1016/j.ica.2018.10.012
CCDC 1502862: Experimental Crystal Structure Determination
Related Article: Md. Kamal Hossain, Anja Köhntopp, Matti Haukka, Michael G. Richmond, Ari Lehtonen, Ebbe Nordlander|2020|Polyhedron|178|114312|doi:10.1016/j.poly.2019.114312
CCDC 1502863: Experimental Crystal Structure Determination
Related Article: Md. Kamal Hossain, Anja Köhntopp, Matti Haukka, Michael G. Richmond, Ari Lehtonen, Ebbe Nordlander|2020|Polyhedron|178|114312|doi:10.1016/j.poly.2019.114312
CCDC 1523700: Experimental Crystal Structure Determination
Related Article: Md. Kamal Hossain, Jörg A. Schachner, Matti Haukka, Ari Lehtonen, Nadia C. Mösch-Zanetti, Ebbe Nordlander|2017|Polyhedron|134|275|doi:10.1016/j.poly.2017.04.036
CCDC 1822503: Experimental Crystal Structure Determination
Related Article: Md. Kamal Hossain, Matti Haukka, Mikko M. Hänninen, George C. Lisensky, Petriina Paturi, Ebbe Nordlander, Ari Lehtonen|2018|Inorg.Chem.Commun.|93|149|doi:10.1016/j.inoche.2018.05.023
CCDC 1983675: Experimental Crystal Structure Determination
Related Article: Erick Ramírez, Md. Kamal Hossain, Marcos Flores-Alamo, Matti Haukka, Ebbe Nordlander, Ivan Castillo|2020|Eur.J.Inorg.Chem.|2020|2798|doi:10.1002/ejic.202000488
CCDC 1847232: Experimental Crystal Structure Determination
Related Article: Md. Kamal Hossain, Jörg A. Schachner, Matti Haukka, Nadia C. Mösch-Zanetti, Ebbe Nordlander, Ari Lehtonen|2019|Inorg.Chim.Acta|486|17|doi:10.1016/j.ica.2018.10.012
CCDC 1518697: Experimental Crystal Structure Determination
Related Article: Md. Kamal Hossain, Matti Haukka, George C. Lisensky, Ari Lehtonen, Ebbe Nordlander|2019|Inorg.Chim.Acta|487|112|doi:10.1016/j.ica.2018.11.049
CCDC 1983679: Experimental Crystal Structure Determination
Related Article: Erick Ramírez, Md. Kamal Hossain, Marcos Flores-Alamo, Matti Haukka, Ebbe Nordlander, Ivan Castillo|2020|Eur.J.Inorg.Chem.|2020|2798|doi:10.1002/ejic.202000488