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Monday, August 3, 2020 | History

3 edition of Synthesis, structure and reactivity of divalent lanthanide complexes found in the catalog.

Synthesis, structure and reactivity of divalent lanthanide complexes

Hermann A. Zinnen

Synthesis, structure and reactivity of divalent lanthanide complexes

by Hermann A. Zinnen

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  • 33 Currently reading

Published .
Written in English


Edition Notes

Statementby Hermann A. Zinnen.
Classifications
LC ClassificationsMicrofilm 82/970
The Physical Object
FormatMicroform
Paginationviii, 167 leaves
Number of Pages167
ID Numbers
Open LibraryOL3128832M
LC Control Number82241627

Synthesis and characterization of new divalent lanthanide complexes supported by amine bis Synthesis and characterization of new divalent lanthanide complexes supported by amine bis For reproduction of material from all other RSC journals and books. Lanthanide(II) Complexes Supported by N,O‐Donor Tripodal Ligands: Synthesis, Structure, and Ligand‐Dependent Redox Behavior The important differences in the stability and reactivity of the investigated complexes are probably due to the observed difference in redox potential.

A series of lanthanide sulfates coordination complexes, Ln 2 (SO 4) 3 (H 2 O) 8 (Ln = Pr (1), Nd (2), Tb (3), Sm (4), Dy (5), Gd (7), Ho (8)), and EuK(SO 4) 2 (6), were constructed by the reaction in situ of lanthanide ions (Ln 3+) with flexible dodecanedioic acid and rigid aromatic 5-sulfosalicylic acid under hydrothermal of them were characterized by elemental analysis, IR.   Synthesis, Structure and Spectroscopic Properties of Lanthanide Complexes of N‐Confused Porphyrins Xun‐Jin Zhu Department of Chemistry and Center for Advanced Luminescence Materials, Hong Kong Baptist University, Kowloon Tong, Hong Kong, P. R. China, Fax: +‐‐

  A comparison with the reported mononuclear and dinuclear lanthanide thiolate complexes has been made to indicate that the Ln-S bonds weakened by the coordination of HMPA to lanthanide metals have ionic character. PMID: The Reduction of Elemental Chalcogens and Their Derivatives by Divalent Lanthanide Complexes Yingzhao Ma (Autor) Vorschau. Leseprobe, PDF ( KB) Inhaltsverzeichnis, PDF (43 KB) ISBN (Printausgabe) ISBN (E-Book) (4-RC6H4Se)2 (R = F, OMe) in order to determine whether this reaction can be used for the synthesis of a.


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Synthesis, structure and reactivity of divalent lanthanide complexes by Hermann A. Zinnen Download PDF EPUB FB2

Synthesis, structure, and catalytic activity of novel trinuclear rare-earth metal amido complexes incorporating μ–η 5:η 1 bonding indolyl and μ 3 Cited by:   Synthesis, structure and spectral features of lanthanide(III) N-confused porphyrinate complexes The successful synthesis of N -confused porphyrin in by two independent research groups has generated a lot of curiosity for the possible existence of new porphyrin isomers with unique properties [75], [76].Cited by: A series of cationic lanthanide(III) monoporphyrinate complexes of the general formula [Ln(Por)(H 2 O) 3]Cl (Ln = Yb 3+ and Er 3+; Por = porphyrinate dianion) were prepared via the protonolysis of Ln(NR 2) 3 with porphyrin free bases (H 2 Por).

An unexpected neutral oxalate-bridged Yb porphyrinate dimer [Yb(Por)(DME)] 2 (μ–η 2:η 2 –O 2 CCO 2) was Synthesis and structurally characterized Cited by: Soluble luminescent complexes of divalent lanthanides, LnCl2xTHF (Ln = Synthesis, Yb, and Sm), were obtained for the first time by reduction of LnIII to LnII in reactions of the lanthanide trichloride.

Synthesis of homoleptic, divalent lanthanide (Sm, Eu) complexes via oxidative transmetallation† Thaige P. Gompa, a Ningxin Jiang, a John Bacsa a and Henry S.

La Pierre * ab. The recently discovered LnZ3/M and LnZ2Z‘/M methods of reduction (Ln = lanthanide; M = alkali metal; Z, Z‘ = monoanionic ligands that allow these combinantions to generate “LnZ2” reactivity) have been applied to provide the first crystallographically characterized dinitrogen complexes of cerium, [(C5Me5)2(THF)Ce]2(μ-η2:η2-N2) and [(C5Me4H)2(THF)Ce]2(μ-η2:η2-N2), so that the.

Activation of Bis(guanidinate)lanthanide Alkyl and Aryl Complexes on Elemental Sulfur: Synthesis and Characterization of Bis(guanidinate)lanthanide Thiolates and Disulfides.

Inorganic Chemistry49 (12), DOI: /icn. The reaction of potassium 2,5-bis{N-(2,6-diisopropylphenyl)iminomethyl}pyrrolyl, [(DIP2pyr)K], with the anhydrous lanthanide diiodides resulted in the heteroleptic complexes [(DIP2pyr)LnI(THF)3] (Ln = Sm, Eu, Yb).

All complexes are monomeric in the solid state, which is remarkable, since samarium and europium complexes tend to form dimeric complexes bridged by Cited by: The reaction of LnI 2 (thf) 2 with benzyl potassium affords the homoleptic benzyl complexes [Ln(CH 2 Ph) 2] n of samarium, europium, and ytterbium.

In the cases of Eu and Yb, the treatment of [Ln(CH 2 Ph) 2] n with one equivalent of 2,6-diisopropylaniline gives access to tetrameric organoimide complexes [(thf)Ln(μ 3-NDipp)] 4, representing the first examples of homometallic Ln(II) imides.

The data on synthesis, structure and reactivity of lanthanide compounds (except samarium, europium and ytterbium derivatives as well as insertion phases of LnX 2 type) containing a metal in subvalent state with a particular emphasis on divalent derivatives are collected and systematized.

Most of the references considered concern diiodides of Nd(II), Dy(II) and Tm(II) and their reactions. The synthesis of new molecular complexes of U(2+) has been pursued to make comparisons in structure, physical properties, and reactivity with the first U(2+) complex, [K(cryptand)][Cp'3 U.

Reaction of K{CH(PPh 2 NSiMe 3) 2} (1) with ytterbium and europium diiodide in a molar ratio in THF afforded the corresponding divalent lanthanide complexes [{(Me 3 SiNPPh 2) 2 CH}EuI(THF)] 2 (2a) and [{(Me 3 SiNPPh 2) 2 CH}YbI(THF) 2] (2b) as crystals in good potassium reagent 1, which was described earlier was used as starting material to avoid coordination.

The reaction of (CSMes)2Sm with PhC-CH leads to coupling of two phenylethynyl ligands into (CSMea)4Sm2(PhzC4) [9]. Isocyanates, as their own structural features, have been widely used in both polymer synthesis [10] and organic synthesis [11].

Study on the reaction of lanthanide complexes with isocyanates should be interesting. Synthesis, structure and reactivity of SalanH2-Metal complexes Article in Journal of Coordination Chemistry 38(4) September with 15 Reads How we measure 'reads'.

Reaction of the tetradentate diamino-bis(phenol)s L 2 H 2 with Sm[N(SiMe 3) 2] 2 (THF) 2 afforded a yellow solution, which indicated the complete oxidation of the Sm(II) species, yellow being the characteristic color of Sm(III) species, while the same reaction with Eu[N(SiMe 3) 2] 2 (THF) 2 gave a divalent complex with a dimeric structure (EuL.

The synthesis of non-classical divalent lanthanide complexes, i.e. those not containing the classical samarium(ii), europium(ii) or ytterbium(ii), was once thought impossible.

Sincewhen the first stable complex of thulium(ii) was discovered, there has been many more examples of stable coordination and organo New horizons in organo-f-block chemistry. DOI: /c1dte Corpus ID: Synthesis and molecular structure of piperazidine-bridged bis(phenolate) samarium(II) complex and its reactivity to.

Synthesis. Ytterbium(II), europium(II), and samarium(II) diiodides were investigated with regard to their reactivity with oligosilanyl anions. The THF complexes LnI 2 (THF) 2 [Ln = Yb (yellow), Eu (dark yellow), Sm (dark blue)] were prepared by reaction of small pieces of metal with 1,2-diiodoethane in THF.

32,33 The dark blue SmI 2 (THF) 2 was either dissolved in THF or suspended in Cited by: Synthesis of complexes was carried out using the following general procedure: in a round bottomed flask provided with an electromagnetic stirrer, an ethanolic solution (25 mL) of 5-hydroxyflavone (1 mmol, g), deprotonated with triethylamine (1 mmol, µL) was added to an ethanolic solution (5 mL) of lanthanide chlorides ( mmol).Cited by: 6.

The history of the rare earths has entered its third century; trans uranium elements are now a half century old.

Both the lanthanide and actinide ele­ ments, 30 elements altogether, are f elements, meaninj that their metallic 2 1 1 electronic configurations are typically 6s 5d 4f" and 7s 6d 5f" respectively.

To an elementary approximation as summarized in the 'average inorganic chemistry. 5 Following Lappert's discovery of the first nontraditional divalent rare-earth complex, i.e., the lanthanum(II) species [La{1,3-(Me 3 Si) 2 C 5 H 3 } 3 ] −, 6 cyclopentadienyl ligands have.

Classical divalent lanthanide aryl complexes are less numerous than alkyls, but synthetic routes to these complexes are presented herein as these are also useful starting materials. Finally, classical divalent lanthanide alkynide chemistry, the least developed of all ligand systems discussed in this article, is covered for completeness.The synthesis and catalytic applications of trivalent rare-earth metal alkyl complexes have been well developed, but the chemistry of divalent rare-earth metal alkyl complexes much lagged behind.

Here we report the synthesis, structure and catalytic application of a samarium(II) monoalkyl complex supported by a β-diketiminato based tetradentate ligand, [LSmCH(SiMe 3) 2 ] (L = [MeC(NDipp)CHC.