Low dimensional magnetic assemblies based on MnIII(Schiff base) and/or Mer-tricyanidoferrate building blocks: Syntheses, crystal structures and magnetic properties

Polyhedron ◽  
2015 ◽  
Vol 85 ◽  
pp. 457-466 ◽  
Author(s):  
Hongbo Zhou ◽  
Yingying Wang ◽  
Fangyou Mou ◽  
Xiaoping Shen ◽  
Yashu Liu
Keyword(s):  
Magnetic Properties ◽  
Schiff Base ◽  
Crystal Structures ◽  
Building Blocks ◽  
Low Dimensional

Solvothermal Syntheses, Crystal Structures of Two New Thioantimonates(III) of the Mn2(L)Sb2S5 Family with L = Diethylenetriamine and N-Methyl-1,3-Diaminopropane and a Study of the Magnetic Properties of Four Compounds of the Series

2004 ◽  
Vol 59 (8) ◽  
pp. 869-876 ◽  
Author(s):  
L. Engelke ◽  
R. Stähler ◽  
M. Schur ◽  
C. Näther ◽  
W. Bensch ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Elevated Temperatures ◽  
Exchange Interactions ◽  
Building Blocks ◽  
Monoclinic Space Group ◽  
Antiferromagnetic Materials ◽  
Distorted Octahedra ◽  
Secondary Building Units ◽  
Low Dimensional ◽  
New Compounds

AbstractThe two new compounds Mn2(L)Sb2S5 (L = diethylenetriamine = DIEN, N-methyl-1,3- diaminopropane = MDAP) were prepared under solvothermal conditions using the elements as starting materials. Both compounds crystallise in the monoclinic space group P21/c with the lattice parameters a=10.669(7), b=12.805(2), c=12.072(1)Å , β =115.786(7)°,V =1485.1(4) Å3 for L = DIEN and a = 10.1859(7), b = 12.7806(6), c = 12.1256(8)Å , β = 110.173(8)°, V = 1481.7(2) Å3 for L = MDAP and Z = 4. The primary building units are SbS3 pyramids, MnS6 and MnS4N2 distorted octahedra. These primary building blocks are interconnected to form Mn2Sb2S4 hetero-cubane units. The hetero-cubanes share common corners, edges and faces thus forming a second heterocubane. These secondary building units are joined to form layers within the (100) plane. The connection mode yields ellipsoidal pores within the layers. The amines are exclusively bound to one of the two crystallographically independent Mn2+ cations and they point into the pores and between the layers separating the layers from each other. The interlayer separation and the size of the pores depend on the sterical requirements of the amine incorporated into the network. A pronounced distortion of the MnS4N2 octahedron results from a significant elongation of one Mn-S distance from 2.866 Å (L = methylamine, MA) to 3.185 Å for L = MDAP. The magnetic susceptibility curves are typical for low-dimensional antiferromagnetic materials and the large negative values for the Weiss constant Θ indicate strong antiferromagnetic exchange interactions. The magnetic properties are significantly influenced by the change of the Mn-S bonds introduced by the different amines. The compounds decompose at elevated temperatures with a two step reaction for L = MA and ethylenediamine and in a one step reaction for the bidentate acting amine molecules.

Halogen-bonding in a new family of tris(haloanilato)metallate(iii) magnetic molecular building blocks

2014 ◽  
Vol 43 (19) ◽  
pp. 7006-7019 ◽  
Author(s):  
Matteo Atzori ◽  
Flavia Artizzu ◽  
Elisa Sessini ◽  
Luciano Marchiò ◽  
Danilo Loche ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Dft Calculations ◽  
Crystal Structures ◽  
General Formula ◽  
Halogen Bonding ◽  
Building Blocks ◽  
New Family ◽  
Molecular Building Blocks

Here we report on new tris(haloanilato)metallate(iii) complexes with general formula [M(X2An)3]3−, their crystal structures, DFT calculations and magnetic properties.

Aggregation of heptanuclear [MII7] (M = Co, Ni, Zn) clusters by a Schiff-base ligand derived from o-vanillin: Synthesis, crystal structures and magnetic properties

Polyhedron ◽  
2019 ◽  
Vol 171 ◽  
pp. 269-278 ◽  
Author(s):  
Ruxandra Gheorghe ◽  
Georgiana Andreea Ionita ◽  
Catalin Maxim ◽  
Andrea Caneschi ◽  
Lorenzo Sorace ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Schiff Base ◽  
Crystal Structures ◽  
Schiff Base Ligand

Mononuclear Fe(III) and tetranuclear [Fe(III)Gd(III)]2 complexes with a Schiff-base ligand derived from the o-vanillin: Synthesis, crystal structures and magnetic properties

Polyhedron ◽  
2011 ◽  
Vol 30 (14) ◽  
pp. 2414-2420 ◽  
Author(s):  
Masood Sarwar ◽  
Augustin M. Madalan ◽  
Franceso Lloret ◽  
Miguel Julve ◽  
Marius Andruh
Keyword(s):  
Magnetic Properties ◽  
Schiff Base ◽  
Crystal Structures ◽  
Schiff Base Ligand
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