Crystal structure and magnetic properties of the spin crossover complex FeII(ethyl nicotinate)2[AuI(CN)2]2

2014 ◽  
Vol 38 (5) ◽  
pp. 1955-1958 ◽  
Author(s):  
Akihiro Sugaya ◽  
Shotaro Ueno ◽  
Jun Okabayashi ◽  
Takafumi Kitazawa
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Phase Transitions ◽  
Coordination Polymer ◽  
Spin Crossover ◽  
Ethyl Nicotinate

A new FeII two-step spin crossover (SCO) coordination polymer, FeII(ethyl nicotinate)2[AuI(CN)2]21, with four-inflection associated with phase transitions, has been synthesized.

scholarly journals Spin Cross-Over (SCO) Complex Based on Unsymmetrical Functionalized Triazacyclononane Ligand: Structural Characterization and Magnetic Properties

2019 ◽  
Vol 5 (1) ◽  
pp. 19 ◽  
Author(s):  
Merzouk Halit ◽  
Mélissa Roger ◽  
Véronique Patinec ◽  
Said Yefsah ◽  
Carlos Gómez-García ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Thermal Decomposition ◽  
Magnetic Properties ◽  
Nmr Spectroscopy ◽  
Functional Groups ◽  
Structural Characterization ◽  
Spin Crossover ◽  
Magnetic Studies ◽  
Dsc Measurements ◽  
Hexadentate Ligand

The unsymmetrical ligand 1-(2-aminophenyl)-4,7-bis(pyridin-2-ylmethyl)-1,4,7-triazacyclononane (L6) has been prepared and characterized by NMR spectroscopy. The L6 ligand is based on the triazamacrocycle (tacn) ring that is functionalized by two flexible 2-pyridylmethyl and one rigid 2-aminophenyl groups. Reaction of this ligand with Fe(ClO4)2·xH2O led to the complex [Fe(L6)](ClO4)2 (1), which was characterized as the first Fe(II) complex based on the unsymmetrical N-functionalized tacn ligand. The crystal structure revealed a discrete monomeric [FeL6]2+ entity in which the unsymmetrical N-functionalized triazacyclononane molecule (L6) acts as hexadentate ligand. As observed in the few parent examples that are based on the symmetrical N-functionalized tacn ligands, the triazacyclononane ring is facially coordinated and the N-donor atoms of the three functional groups (two pyridine and one aniline groups) are disposed in the same side of the tacn ring, leading to a distorted FeN6 environment. The magnetic studies of 1 revealed the presence of an incomplete spin crossover (SCO) transition above 425 K, whose progress would be prevented by a very exothermic thermal decomposition at ca. 472 K, as shown by thermogravimetric and DSC measurements.

A Co(ii) 1D coordination polymer constructed from 1,3-bisbenzyl-2-oxoimidazoline-4,5-dicarboxylic acid: crystal structure and magnetic properties

2018 ◽  
Vol 42 (2) ◽  
pp. 1216-1222 ◽  
Author(s):  
Felipe Mageste Scaldini ◽  
Maria Clara Ramalho Freitas ◽  
Mario De Souza Reis ◽  
Maria Irene Yoshida ◽  
Klaus Krambrock ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Coordination Polymer ◽  
Dicarboxylic Acid ◽  
Metal Ion ◽  
Acid Crystal ◽  
1D Coordination Polymer ◽  
Solvothermal Conditions

A new complex involving 1,3-bisbenzyl-2-oxoimidazoline-4,5-dicarboxylic acid (H2L) and a cobalt(ii) metal ion designated [Co(L)(H2O)2]n has been synthesized under solvothermal conditions and characterized.

Synthesis, crystal structure and magnetic properties of a cyanide-bridged heterometallic {CoIIMnIII} chain

2017 ◽  
Vol 46 (1) ◽  
pp. 39-43 ◽  
Author(s):  
Maria-Gabriela Alexandru ◽  
Diana Visinescu ◽  
Sergiu Shova ◽  
Francesc Lloret ◽  
Miguel Julve
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Coordination Polymer

Herein, we report the synthesis, crystal structure and magnetic properties of the first ferrimagnetic cyanide-bridged {CoIIMnIII} monodimensional coordination polymer.

A Cu II coordination polymer based on incorporated carboxylate and sulfonate groups: Synthesis, crystal structure, and magnetic properties

2015 ◽  
Vol 1079 ◽  
pp. 163-166 ◽  
Author(s):  
Yinfeng Han ◽  
Zebao Zheng ◽  
Chang’an Wang ◽  
Jiafeng Sun ◽  
Xiaoyan Li ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Coordination Polymer
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