scholarly journals Spin transition in a ferrous chloride complex supported by a pentapyridine ligand

2020 ◽  
Vol 56 (18) ◽  
pp. 2703-2706
Author(s):  
Manuel Boniolo ◽  
Sergii I. Shylin ◽  
Petko Chernev ◽  
Mun Hon Cheah ◽  
Philipp A. Heizmann ◽  
...  
Keyword(s):  
High Spin ◽  
Coordination Sphere ◽  
Spin State ◽  
Spin Transition ◽  
Chloride Complex ◽  
Ferrous Chloride ◽  
High Spin Complex ◽  
Spin Complex

Apparent high-spin complex with FeN5Cl coordination sphere exhibits a complete transition to the low-spin state on cooling.

scholarly journals Photo-induced metastable low spin state in a iron(II) high-spin complex

2011 ◽  
Vol 67 (a1) ◽  
pp. C699-C699
Author(s):  
C. -F. Sheu ◽  
C. -H. Shih ◽  
K. Sugimoto ◽  
B. -M. Cheng ◽  
M. Takata ◽  
...  
Keyword(s):  
High Spin ◽  
Spin State ◽  
High Spin Complex ◽  
Spin Complex

scholarly journals Anion Influence on Spin State in Two Novel Fe(III) Compounds: [Fe(5F-sal2333)]X

Crystals ◽  
2018 ◽  
Vol 9 (1) ◽  
pp. 19 ◽  
Author(s):  
Sriram Sundaresan ◽  
Irina Kühne ◽  
Conor Kelly ◽  
Andrew Barker ◽  
Daniel Salley ◽  
...  
Keyword(s):  
High Spin ◽  
Spin State ◽  
Spin Crossover ◽  
Structural Investigation ◽  
Variable Temperature ◽  
Magnetic Data ◽  
Crystallographic Site ◽  
Hydrogen Atoms ◽  
High Spin Complex ◽  
Spin Complex

Structural and magnetic data on two iron (III) complexes with a hexadentate Schiff base chelating ligand and Cl− or BPh4− counterions are reported. In the solid state, the Cl− complex [Fe(5F-sal2333)]Cl, 1, is high spin between 5–300 K while the BPh4− analogue [Fe(5F-sal2333)]BPh4, 2, is low spin between 5–250 K, with onset of a gradual and incomplete spin crossover on warming to room temperature. Structural investigation reveals different orientations of the hydrogen atoms on the secondary amine donors in the two salts of the [Fe(5F-sal2333)]+ cation: high spin complex [Fe(5F-sal2333)]Cl, 1, crystallizes with non-meso orientations while the spin crossover complex [Fe(5F-sal2333)]BPh4, 2, crystallizes with a combination of meso and non-meso orientations disordered over one crystallographic site. Variable temperature electronic absorption spectroscopy of methanolic solutions of 1 and 2 suggests that both are capable of spin state switching in the solution.

Heptanuclear high-spin complex compounds based on S-donors

Polyhedron ◽  
2007 ◽  
Vol 26 (9-11) ◽  
pp. 2330-2334 ◽  
Author(s):  
F. Renz ◽  
J. Hefner ◽  
D. Hill ◽  
M. Klein
Keyword(s):  
High Spin ◽  
Complex Compounds ◽  
High Spin Complex ◽  
Spin Complex

Ab initio Study of the coordination modes of tetrahydroborato ligands: the high-spin complex bis(phosphine)tris(tetrahydroborato)vanadium

1991 ◽  
Vol 30 (23) ◽  
pp. 4440-4445 ◽  
Author(s):  
Agusti. Lledos ◽  
Miquel. Duran ◽  
Yves. Jean ◽  
Francois. Volatron
Keyword(s):  
Ab Initio ◽  
High Spin ◽  
Ab Initio Study ◽  
Coordination Modes ◽  
High Spin Complex ◽  
Spin Complex

High-spin complex [FeL2(NCS)2]·H2O [L = 3,5-di(pyrimidin-2-yl)-4H-1,2,4-triazol-4-amine]: Synthesis and properties

2010 ◽  
Vol 80 (8) ◽  
pp. 1703-1709 ◽  
Author(s):  
M. B. Bushuev ◽  
V. P. Krivopalov ◽  
V. A. Daletskii ◽  
V. A. Varnek ◽  
L. A. Sheludyakova ◽  
...  
Keyword(s):  
High Spin ◽  
High Spin Complex ◽  
Spin Complex

scholarly journals Structure:function relationships for thermal and light-induced spin-crossover in isomorphous molecular materials

2020 ◽  
Vol 8 (25) ◽  
pp. 8420-8429
Author(s):  
Rafal Kulmaczewski ◽  
Elzbieta Trzop ◽  
Eric Collet ◽  
Sergi Vela ◽  
Malcolm A. Halcrow
Keyword(s):  
High Spin ◽  
Spin State ◽  
Spin Crossover ◽  
Spin Transition ◽  
Molecular Materials

The complicated light-induced spin state trapping behaviour of a family of isomorphous solvate crystals reflects reorientation of the lattice solvent during the spin-transition (white = high-spin, brown = low-spin).

Metal complexes of 1,10-Phenanthroline derivatives. VII. Complexes of 1,10-Phenanthroline-2-carbaldehyde hydrazones

1974 ◽  
Vol 27 (5) ◽  
pp. 965 ◽  
Author(s):  
HA Goodwin ◽  
DW Mather
Keyword(s):  
Field Strength ◽  
Metal Complexes ◽  
High Spin ◽  
Spin State ◽  
Spin Transition ◽  
Pronounced Change ◽  
Temperature Range ◽  
Spin Pairing ◽  
Bivalent Iron ◽  
Experimental Temperature Range

A series of substituted hydrazones derived from 1,l0-phenanthroline-2-carbaldehyde and their bis-ligand complexes with bivalent iron and nickel are described. The hydrazones show a gradation in field strength and this is reflected in the spin-state of the iron complexes. The methylhydrazone complex is essentially low-spin over the temperature range 83-363 K but the presence of some spin-free species at high temperatures is evident. Within the same range the dimethylhydrazone complex is essentially high-spin but undergoes significant spin-pairing and the phenylhydrazone complex displays a complete 5T2 → 1A1 spin transition. This transition is very sharp, resulting in a pronounced change in the magnetism, and colour, of the complex within a few degrees. Complexes of the 2-pyridylhydrazone, the methylphenylhydrazone and the diphenylhydrazone are high-spin over the entire experimental temperature range.

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