scholarly journals Synthesis and crystallographic characterization of diphenylamide rare-earth metal complexes Ln(NPh2)3(THF)2 and [(Ph2N)2 Ln(μ-NPh2)]2

2020 ◽  
Vol 76 (9) ◽  
pp. 1447-1453
Author(s):  
Chad T. Palumbo ◽  
Christopher M. Kotyk ◽  
Joseph W. Ziller ◽  
William J. Evans
Keyword(s):  
Rare Earth ◽  
Coordination Chemistry ◽  
Structural Characterization ◽  
Rare Earth Metal ◽  
Hydrolysis Product ◽  
Earth Metal ◽  
X Ray Diffraction ◽  
X Ray ◽  
Rare Earth Metal Complexes

Studies of the coordination chemistry between the diphenylamide ligand, NPh2, and the smaller rare-earth Ln III ions, Ln = Y, Dy, and Er, led to the structural characterization by single-crystal X-ray diffraction crystallography of both solvated and unsolvated complexes, namely, tris(diphenylamido-κN)bis(tetrahydrofuran-κO)yttrium(III), Y(NPh2)3(THF)2 or [Y(C12H10N)3(C4H8O)2], 1-Y, and the erbium(III) (Er), 1-Er, analogue, and bis[μ-1κN:2(η6)-diphenylamido]bis[bis(diphenylamido-κN)yttrium(III)], [(Ph2N)2Y(μ-NPh2)]2 or [Y2(C12H10N)6], 2-Y, and the dysprosium(III) (Dy), 2-Dy, analogue. The THF ligands of 1-Er are modeled with disorder across two positions with occupancies of 0.627 (12):0.323 (12) and 0.633 (7):0.367 (7). Also structurally characterized was the tetrametallic ErIII bridging oxide hydrolysis product, bis(μ-diphenylamido-κ2 N:N)bis[μ-1κN:2(η6)-diphenylamido]tetrakis(diphenylamido-κN)di-μ3-oxido-tetraerbium(III) benzene disolvate, {[(Ph2N)Er(μ-NPh2)]4(μ-O)2}·(C6H6)2 or [Er4(C12H10N)8O2]·2C6H6, 3-Er. The 3-Er structure was refined as a three-component twin with occupancies 0.7375:0.2010:0.0615.

Versatility of cyclooctatetraenyl ligands in rare earth metal complexes of the [M2(COT)3(THF)2] (M = Y and La) type

2019 ◽  
Vol 48 (17) ◽  
pp. 5614-5620
Author(s):  
Joshua Greenough ◽  
Zheng Zhou ◽  
Zheng Wei ◽  
Marina A. Petrukhina
Keyword(s):  
Rare Earth ◽  
Metal Complexes ◽  
Diffraction Analysis ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
X Ray Diffraction ◽  
X Ray ◽  
H Nmr ◽  
Rare Earth Metal Complexes

Two new organometallic cyclooctatetraenyl complexes of the type [M2(COT)3(THF)2] (M = Y and La) have been prepared, using optimized synthetic procedures, and fully characterized by X-ray diffraction analysis, IR and 1H NMR spectroscopies.

Synthesis and structural characterization of amido heteroscorpionate rare-earth metal complexes and hydroamination of aminoalkenes

2015 ◽  
Vol 39 (10) ◽  
pp. 7672-7681 ◽  
Author(s):  
Antonio Otero ◽  
Agustín Lara-Sánchez ◽  
José A. Castro-Osma ◽  
Isabel Márquez-Segovia ◽  
Carlos Alonso-Moreno ◽  
...  
Keyword(s):  
Rare Earth ◽  
Metal Complexes ◽  
Structural Characterization ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Rare Earth Complexes ◽  
Rare Earth Metal Complexes

New amide heteroscorpionate rare-earth complexes were developed and used as efficient catalysts for the intramolecular hydroamination of aminoalkenes.

Dicationic Methyl Complexes of the Rare-Earth Elements

2014 ◽  
Vol 69 (3) ◽  
pp. 327-331 ◽  
Author(s):  
Anja Nieland ◽  
Andreas Mix ◽  
Beate Neumann ◽  
Hans-Georg Stammler ◽  
Norbert W. Mitzel
Keyword(s):  
Rare Earth ◽  
Nmr Spectroscopy ◽  
Crown Ether ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
X Ray Diffraction ◽  
X Ray ◽  
Elemental Analyses ◽  
Rare Earth Metal Complexes ◽  
C Nmr

The reactions of Ln(AlMe4)3 (Ln=Ho, Tm) with the crown ether [12]crown-4 yield dicationic methyl rare-earth metal complexes [LnMe([12]crown-4)2][AlMe4]2 (Ln=Ho (1), Tm (2)). The reaction of La(AlMe4)3 with [18]crown-6 in thf affords [LaMe([18]crown-6)(thf)2][AlMe4]2 (3). The compounds have been characterized by X-ray diffraction, 1 and 3 additionally by elemental analyses as well as by 1H and 27Al, and 3 also by 13C NMR spectroscopy

X-Ray Diffraction Study of Rare Earth Epitaxial Structures Grown by MBE onto (111) GaAs

1989 ◽  
Vol 151 ◽  
Author(s):  
W. R. Bennett ◽  
R. F. C. Farrow ◽  
S. S. P. Parkin ◽  
E. E. Marinero
Keyword(s):  
Rare Earth ◽  
Molecular Beam Epitaxy ◽  
Rare Earth Metal ◽  
Molecular Beam ◽  
Earth Metal ◽  
Magnetic Ordering ◽  
Metal Films ◽  
X Ray Diffraction ◽  
X Ray ◽  
Strain Components

ABSTRACTWe report on the new epitaxial system LaF3/Er/Dy/Er/LaF3/GaAs (111) grown by molecular beam epitaxy. X-ray diffraction studies have been used to determine the epitaxial relationships between the rare earths, the LaF3 and the substrate. Further studies of symmetric and asymmetric reflections yielded the in-plane and perpendicular strain components of the rare earth layers. Such systems may be used to probe the effects of magnetoelastic interactions and dimensionality on magnetic ordering in rare earth metal films and multilayers.

Promoting Effect of Metal Promoters on Fe(II)-Zn-Based Double Metal Cyanide Complex Catalysts for Biodiesel Synthesis

2011 ◽  
Vol 236-238 ◽  
pp. 3041-3045 ◽  
Author(s):  
Ling Mei Yang ◽  
Peng Mei Lv ◽  
Zhen Hong Yuan ◽  
Wen Luo ◽  
Zhong Ming Wang ◽  
...  
Keyword(s):  
Rare Earth ◽  
Transition Metal ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Molecular Formula ◽  
Cyanide Complex ◽  
X Ray Diffraction ◽  
X Ray ◽  
Metal Cyanide ◽  
Biodiesel Synthesis

Fe(II)-Zn-based double metal cyanide complex catalysts modified with rare earth metal or transition metal promoters(lanthanum, cerium, zirconium, manganese) for the production of biodiesel were prepared, and the effect of the addition of different metal promoters on the characteristics of the catalyst was studied by using X-ray diffraction (XRD), BET, ICP and Infrared techniques .The experiment results show that the Fe(II)-Zn-based catalyst promoted with 1 wt.% of La(NO3)3·nH2O exhibits the highest catalytic activity for the reaction, being as high as 99.3% of the yield of fatty acid methyl esters (FAME). Fe(II)-Zn-based catalysts have a tentative molecular formula: K2Zn3[Fe(CN)6]2·xH2O· (t-BuOH), where x=3-9 determined by using elemental analysis and ICP. It has been shown that the molecular formula of Fe(II)-Zn-based double metal cyanide complex catalysts did not change by adding 1 wt.% of rare earth metal or transition metal promoters. X-ray diffraction and BET results showed that Fe(II)-Zn-based catalysts with 1 wt.% of metal promoters salts exhibit smaller particle size, higher surface area than the Fe(II)-Zn catalyst ,which may be related to the higher activity of the catalysts.

scholarly journals Synthesis and Characterization of Heterobimetallic Oxo-Bridged Aluminum–Rare Earth Metal Complexes

2011 ◽  
Vol 50 (16) ◽  
pp. 7453-7459 ◽  
Author(s):  
Jingjun Hao ◽  
Jianfeng Li ◽  
Chunming Cui ◽  
Herbert W. Roesky
Keyword(s):  
Rare Earth ◽  
Metal Complexes ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Synthesis And Characterization ◽  
Rare Earth Metal Complexes

scholarly journals Characterization, Molecular Docking, Antimicrobial and Anticancer Studies on 5-Bromo salicylaldehyde-furan-2-yl-methanamine Condensed Schiff Base Rare Earth Metal Complexes

2021 ◽  
Vol 33 (9) ◽  
pp. 2127-2134
Author(s):  
B. Preethi ◽  
R. Jayaprakash ◽  
S. Kutti Rani ◽  
N. Vijayakumar
Keyword(s):  
Schiff Base ◽  
Rare Earth ◽  
Metal Complexes ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Anticancer Activities ◽  
Spectral Techniques ◽  
Biological Efficacy ◽  
Rare Earth Metal Complexes

This work described the synthesis and characterization of 1-(furan-2-yl) methanamine condensed with 5-bromo-2-hydroxybenzaldehyde Schiff base rare earth metal (Ln3+, Pr3+, Nd3+, Sm3+ and Eu3+) complexes.. They were characterized using relevant spectral techniques and docked against microbial target proteins (1H9Z, 3ZBO) theoretically. The experimental antibacterial and anticancer activities (HeLa, MCF7) of these metal complexes were investigated for biological efficacy. Out of five metal complexes, Pr3+ complex exposed good biological efficacy result in both assays.

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