scholarly journals Ligand effects on structural, protophilic and reductive features of stannylated dinuclear iron dithiolato complexes

2021 ◽  
Vol 45 (1) ◽  
pp. 36-44
Author(s):  
Hassan Abul-Futouh ◽  
Laith R. Almazahreh ◽  
Sara J. Abaalkhail ◽  
Helmar Görls ◽  
Sven T. Stripp ◽  
...  
Keyword(s):  
Synthesis And Characterization ◽  
Ligand Effects ◽  
Dinuclear Iron

The synthesis and characterization of Fe2(CO)5(L){μ-(SCH2)2SnMe2} (L = PPh3 (2) and P(OMe)3 (3)) derived from the parent hexacarbonyl complex Fe2(CO)6{μ-(SCH2)2}SnMe2 (1) are reported.

Synthesis and Characterization of a Dinuclear Iron(II) Spin Crossover Complex with Wide Hysteresis

2008 ◽  
Vol 47 (22) ◽  
pp. 10779-10787 ◽  
Author(s):  
Birgit Weber ◽  
Eike S. Kaps ◽  
Jaroslava Obel ◽  
Klaus Achterhold ◽  
Fritz G. Parak
Keyword(s):  
Spin Crossover ◽  
Synthesis And Characterization ◽  
Dinuclear Iron ◽  
Wide Hysteresis

scholarly journals Ligand Effects on Structural, Protophilic and Reductive Features of Stannylated Dinuclear Iron Dithiolato Complexes

2020 ◽  
Author(s):  
Hassan Abul-Futouh ◽  
Laith R. Almazahreh ◽  
Sara J. Abaalkhail ◽  
Helmar Görls ◽  
Sven T. Stripp ◽  
...  
Keyword(s):  
Solution Nmr ◽  
Donor Ligands ◽  
Boat Conformation ◽  
Spectroscopic Techniques ◽  
Cyclic Voltammetric ◽  
X Ray Crystallography ◽  
Ligand Effects ◽  
Dinuclear Iron ◽  
Site Exchange

The synthesis and characterization of Fe2(CO)5(L){μ-(SCH2)2}SnMe2 (L = PPh3 (2) and P(OMe)3 (3) derived from the parent hexacarbonyl complex Fe2(CO)6{μ-(SCH2)2}SnMe2 (1) is reported. Whereas 1 exhibits a unique planar structure, X-ray crystallography showed that the apical orientation of L in complexes 2 and 3 results in a chair/boat conformation of the Fe2S2C2Sn fused six-membered rings, which is typical for diiron dithiolato complexes. In solution, NMR and FTIR spectroscopic techniques provide evidence for a dynamic process of apical-basal site exchange of the ligand L in 2 and 3. Protonation experiments on 2 and 3 in MeCN using CF3CO2H, HCl or HBF4·Et2O suggest enhanced protophilicity of the Fe-Fe bond due to the presence of the electron donor ligands L as well as the stannylation effect. While the carbonyl ligands in 2 stretch at lower wavenumbers ν(CO) than those in 3, the cyclic voltammetric reduction of 2 unpredictably occurs at less negative potential than that of 3. In contrast to 1, the presence of PPh3 and P(OMe)3 in 2 and 3, respectively, allows protonation prior to reduction as shown by FTIR spectroscopy and cyclic voltammetry.

scholarly journals Ligand Effects on Structural, Protophilic and Reductive Features of Stannylated Dinuclear Iron Dithiolato Complexes

2020 ◽  
Author(s):  
Hassan Abul-Futouh ◽  
Laith R. Almazahreh ◽  
Sara J. Abaalkhail ◽  
Helmar Görls ◽  
Sven T. Stripp ◽  
...  
Keyword(s):  
Solution Nmr ◽  
Donor Ligands ◽  
Boat Conformation ◽  
Spectroscopic Techniques ◽  
Cyclic Voltammetric ◽  
X Ray Crystallography ◽  
Ligand Effects ◽  
Dinuclear Iron ◽  
Site Exchange

The synthesis and characterization of Fe2(CO)5(L){μ-(SCH2)2}SnMe2 (L = PPh3 (2) and P(OMe)3 (3) derived from the parent hexacarbonyl complex Fe2(CO)6{μ-(SCH2)2}SnMe2 (1) is reported. Whereas 1 exhibits a unique planar structure, X-ray crystallography showed that the apical orientation of L in complexes 2 and 3 results in a chair/boat conformation of the Fe2S2C2Sn fused six-membered rings, which is typical for diiron dithiolato complexes. In solution, NMR and FTIR spectroscopic techniques provide evidence for a dynamic process of apical-basal site exchange of the ligand L in 2 and 3. Protonation experiments on 2 and 3 in MeCN using CF3CO2H, HCl or HBF4·Et2O suggest enhanced protophilicity of the Fe-Fe bond due to the presence of the electron donor ligands L as well as the stannylation effect. While the carbonyl ligands in 2 stretch at lower wavenumbers ν(CO) than those in 3, the cyclic voltammetric reduction of 2 unpredictably occurs at less negative potential than that of 3. In contrast to 1, the presence of PPh3 and P(OMe)3 in 2 and 3, respectively, allows protonation prior to reduction as shown by FTIR spectroscopy and cyclic voltammetry.

Synthesis and Characterization of the Three Dicyclopentapyrenes

1996 ◽  
Vol 61 (10) ◽  
pp. 3572-3572
Author(s):  
Lawrence T. Scott ◽  
Atena Necula
Keyword(s):  
Synthesis And Characterization
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