Spin state variation in nickel(II) complexes of a redox-active Schiff base

1995 ◽  
Vol 20 (2) ◽  
Author(s):  
Yudhvir Singh Sharma ◽  
Pavan Mathur
Keyword(s):  
Schiff Base ◽  
Spin State ◽  
Redox Active ◽  
State Variation

Ground Spin State Variation in Carboxylate-Bridged Tetranuclear [Fe2Mn2O2]8+ Cores and a Comparison with Their [Fe4O2]8+ and [Mn4O2]8+ Congeners

2003 ◽  
Vol 2003 (3) ◽  
pp. 541-555 ◽  
Author(s):  
Phalguni Chaudhuri ◽  
Eva Rentschler ◽  
Frank Birkelbach ◽  
Carsten Krebs ◽  
Eckhard Bill ◽  
...  
Keyword(s):  
Spin State ◽  
State Variation ◽  
Ground Spin State

scholarly journals Probing the unpaired Fe spins across the spin crossover of a coordination polymer

2021 ◽  
Author(s):  
Thilini K. Ekanayaka ◽  
Hannah Kurz ◽  
Ashley S. Dale ◽  
Guanhua Hao ◽  
Aaron Mosey ◽  
...  
Keyword(s):  
Schiff Base ◽  
Coordination Polymer ◽  
Spin State ◽  
Spin Crossover ◽  
State Transition ◽  
Spin State Transition

For the spin crossover coordination polymer [Fe(L1)(bipy)]n (where L1 is a N2O22− coordinating Schiff base-like ligand bearing a phenazine fluorophore and bipy = 4,4′-bipyridine), there is compelling additional evidence of a spin state transition.

scholarly journals Structural Evidence of Spin State Selection and Spin Crossover Behavior of Tripodal Schiff Base Complexes of tris(2-aminoethyl)amine and Related Tripodal Amines

2020 ◽  
Vol 6 (2) ◽  
pp. 28
Author(s):  
Greg Brewer
Keyword(s):  
Schiff Base ◽  
Spin State ◽  
Density Functional ◽  
Spin Crossover ◽  
Bimodal Distribution ◽  
Structural Features ◽  
Schiff Base Complexes ◽  
Mononuclear Iron ◽  
Experimental Values ◽  
State Selection

A review of the tripodal Schiff base (SB) complexes of tris(2-aminoethyl)amine, Nap(CH2CH 2NH2)3 (tren), and a few closely related tripodal amines with Cr(II), Mn(III) (d4), Mn(II), Fe(III) (d5), Fe(II) (d6), and Co(II) (d7) is provided. Attention is focused on examination of key structural features, the M-Nimine, M-Namine, or M-O and M-Nap bond distances and Nimine-M-N(O) bite and C-Nap-C angles and how these values correlate with spin state selection and spin crossover (SCO) behavior. A comparison of these experimental values with density functional theory calculated values is also given. The greatest number, 132, of complexes is observed with cationic mononuclear iron(II) in a N6 donor set, Fe(II)N6. The dominance of two spin states, high spin (HS) and low spin (LS), in these systems is indicated by the bimodal distribution of histogram plots of Fe(II)-Nimine and Fe(II)-Nazole/pyridine bond distances and of Nimine–Fe(II)-Nazole/pyridine and C-Nap-C bond angles. The values of the two maxima, corresponding to LS and HS states, in each of these histograms agree closely with the theoretical values. The iron(II)-Nimine and iron(II)-Nazole/pyridine bond distances correlate well for these complexes. Examples of SCO complexes of this type are tabulated and a few of the 20 examples are discussed that exhibit interesting features. There are only a few mononuclear iron(III) cationic complexes and one is SCO. In addition, a significant number of supramolecular complexes of these ligands that exhibit SCO, intervalence, and chiral recognition are discussed. A summary is made regarding the current state of this area of research and possible new avenues to explore based on analysis of the present data.

Formation of trimetallic complexes containing redox-active nitrosyl molybdenum tris(3,5-dimethylpyrazolyl)-borato groups. Schiff base compounds containing two Mo and one Cu centre

Polyhedron ◽  
1994 ◽  
Vol 13 (18) ◽  
pp. 2615-2627 ◽  
Author(s):  
Stanley M. Kagwanja ◽  
Christopher J. Jones ◽  
John P. Maher ◽  
Jon A. McCleverty
Keyword(s):  
Schiff Base ◽  
Redox Active

scholarly journals Carbon dioxide reduction by lanthanide(iii) complexes supported by redox-active Schiff base ligands

2020 ◽  
Vol 7 (19) ◽  
pp. 3598-3608
Author(s):  
Nadir Jori ◽  
Davide Toniolo ◽  
Bang C. Huynh ◽  
Rosario Scopelliti ◽  
Marinella Mazzanti
Keyword(s):  
Carbon Dioxide ◽  
Schiff Base ◽  
Carbon Dioxide Reduction ◽  
Schiff Base Ligands ◽  
Redox Active

The reduction of Ln(iii)-trensal complexes allows to store electrons, that become available for CO2 reduction, trough the formation of new C–C bonds.

Iron(II) Spin Crossover Complexes Based on a Redox Active Equatorial Schiff-Base-Like Ligand

2020 ◽  
Vol 59 (12) ◽  
pp. 8320-8333 ◽  
Author(s):  
Sophie Schönfeld ◽  
Katja Dankhoff ◽  
Dirk Baabe ◽  
Marc-Kevin Zaretzke ◽  
Martin Bröring ◽  
...  
Keyword(s):  
Schiff Base ◽  
Spin Crossover ◽  
Redox Active ◽  
Spin Crossover Complexes
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