Synthesis and magnetochemistry of heterometallic triangular FeIII2LnIII (Ln = La, Gd, Tb, Dy, and Ho) and FeIII2YIII complexes

2017 ◽  
Vol 46 (24) ◽  
pp. 7897-7903 ◽  
Author(s):  
Namrata Singh ◽  
Sayak Das Gupta ◽  
Raymond J. Butcher ◽  
George Christou
Keyword(s):  
Metal Complexes ◽  
Antiferromagnetic Interaction ◽  
Magnetic Studies ◽  
X Ray ◽  
Mixed Metal ◽  
X Ray Crystallography ◽  
Mixed Metal Complexes

A series of six 3d–4f mixed metal complexes with an Fe2M(μ3-O) triangular core have been synthesized and characterized by X-ray crystallography. Magnetic studies of the compounds reveal a spin frustrated system due to the strong Fe⋯Fe antiferromagnetic interaction.

scholarly journals Heteronukleare Mehrkernkomplexe. Darstellung und Struktur von Komplexen mit den Kationen [MII{(OH)2CoIII(en)2}3]5+, M = Ni, Zn, Mg/Polynuclear Mixed-Metal Complexes. Preparation and Structures of Complexes with the Cations [MII{(OH)2CoIII(en)2}3]5+, M = Ni, Zn, Mg

1989 ◽  
Vol 44 (3) ◽  
pp. 257-260 ◽  
Author(s):  
Susanne Müller ◽  
Ulf Thewalt
Keyword(s):  
Metal Complexes ◽  
Central Metal ◽  
X Ray ◽  
Mixed Metal ◽  
Chelate Ligands ◽  
Mixed Metal Complexes

Abstract Reaction of [(en)2Co(H2O)2](ClO4)3 with the dichlorides of nickel, magnesium , and zinc, leads at an pH of ca. 8 to the heterometallic, isomorphous complexes [MII{(OH)2CoIII(en)2}3](ClO4)4Cl·3H2O. The central metal(2 +) cations of these complexes are surrounded octahedraily by three [(en)2Co(OH)2]+ chelate ligands. This has been confirmed by X-ray structure analyses. The cation antipodes of the racemic salts exhibit the conformations Δ (⋀ ⋀ ⋀) / ⋀ (Δ Δ Δ) .

Unsaturated mixed-metal complexes: syntheses of (.eta.-C5Me5)Ni-M(CO)3(.eta.-C5H5) (M = Mo, W) and x-ray diffraction study of (.eta.-C5Me5)Ni-W(CO)3(.eta.-C5H4Me)

1990 ◽  
Vol 9 (4) ◽  
pp. 1343-1345 ◽  
Author(s):  
Michael J. Chetcuti ◽  
Brian E. Grant ◽  
Phillip E. Fanwick ◽  
Margaret J. Geselbracht ◽  
Angelica M. Stacy
Keyword(s):  
Metal Complexes ◽  
Diffraction Study ◽  
X Ray Diffraction ◽  
X Ray ◽  
Mixed Metal ◽  
Mixed Metal Complexes

Studies on Bis-hydrazine Complexes of Metal Propionates and Mixed Metal Propionates

1994 ◽  
Vol 49 (7) ◽  
pp. 950-954 ◽  
Author(s):  
B. N. Sivasankar ◽  
S. Govindarajan
Keyword(s):  
Thermal Decomposition ◽  
Weight Loss ◽  
Ir Spectra ◽  
Metal Complexes ◽  
Metal Oxides ◽  
X Ray Diffraction ◽  
X Ray ◽  
Mixed Metal ◽  
Mixed Metal Complexes ◽  
Final Residue

Abstract Metal propionate hydrazinates, M(CH3Ch2COO)2(N2H4)2 where M = Mn, Co, Ni, Zn or Cd, and mixed metal propionate hydrazinates with cobalt, M1/3Co2/3(CH3CH2COO)2(N2H4)2 where M = Mg, Mn, Ni, Zn or Cd, have been prepared and characterized by analytical, magnetic, spectral, thermal and X-ray diffraction studies. The thermal decomposition of the former complexes yields the metal oxides while the latter mixed metal complexes give the corresponding metal cobaltites as the final residue. Formation of metal cobaltites has been confirmed by TG weight loss, IR spectra and X-ray diffraction.

Simultaneous Generation of a [2×2] Grid-like Complex and a Linear Double Helicate: A Three-Level Self-Sorting Process

2019 ◽  
Author(s):  
Jean-François Ayme ◽  
Jean-Marie Lehn ◽  
Corinne Bailly ◽  
Lydia Karmazin
Keyword(s):  
Metal Complexes ◽  
Mass Spectroscopy ◽  
Metal Salts ◽  
Simultaneous Generation ◽  
X Ray ◽  
X Ray Crystallography ◽  
Sorting Process

<div>Two constitutional dynamic libraries (CDLs)—each containing two amines, two dialdehydes and two metal salts—have been found to self-sort, generating two pairs of imine-based metallosupramolecular architectures sharing no component, a [2×2] grid-like complex and a linear double helicate. These CDLs provided unique examples of a three-level self-sorting process, as only two imine-based ligand constituents, two metal complexes and two architectures were selected during their assembling out of all the possible combinations of their initial components. The metallosupramolecular architectures assembled were characterized by NMR, mass spectroscopy, and X-ray crystallography.</div>

scholarly journals A Mixed-metal Mixed-halide Complex Prepared from Zerovalent Copper and Lead Salts: Solution and Solid-state Chemistry

1999 ◽  
Vol 23 (11) ◽  
pp. 670-671
Author(s):  
Larisa A. Kovbasyuk ◽  
Olga Yu. Vassilyeva ◽  
Vladimir N. Kokozay ◽  
Wolfgang Linert ◽  
Paul R. Raithby
Keyword(s):  
Solid State ◽  
Direct Interaction ◽  
Solid State Chemistry ◽  
X Ray ◽  
Mixed Metal ◽  
X Ray Crystallography ◽  
Halide Complex ◽  
Layer Arrangement ◽  
Lead Salts

The mixed-metal mixed-halide complex [CuPbBrlL2]2 has been prepared by the direct interaction of zerovalent copper with lead halides and 2-dimethylaminoethanol (HL) in dmso and has been characterized by X-ray crystallography; the structure shows a layer arrangement of the tetranuclear metal units through the μ3-halogen bridging.

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