Evaluating electrochemical accessibility of 4fn5d1 and 4fn+1 Ln(ii) ions in (C5H4SiMe3)3Ln and (C5Me4H)3Ln complexes

2021 ◽  
Author(s):  
Michael T. Trinh ◽  
Justin C. Wedal ◽  
William J. Evans
Keyword(s):  
Electrochemical Characterization ◽  
Reduction Potentials ◽  
Lanthanide Series

Electrochemical characterization of the Ln(iii)/Ln(ii) reduction potentials for the entire lanthanide series and yttrium is reported for the (C5H4SiMe3)3Ln complexes.

Electrochemistry of Metalloporphyrin Homo- and Hetero-dimers Containing Co, Ni or Cu Metal Ions

1998 ◽  
Vol 02 (05) ◽  
pp. 439-450 ◽  
Author(s):  
KARL M. KADISH ◽  
NING GUO ◽  
ERIC VAN CAEMELBECKE ◽  
ROBERTO PAOLESSE ◽  
DONATO MONTI ◽  
...  
Keyword(s):  
Metal Ions ◽  
Cation Radical ◽  
Electrochemical Characterization ◽  
Electronic Interaction ◽  
Cation Radicals ◽  
Reduction Potentials ◽  
Half Wave ◽  
Covalently Linked

The synthesis and electrochemical characterization of five covalently linked symmetrical and unsymmetrical metalloporphyrin dimers containing tetraphenylporphyrin (TPP), triphenylporphyrin (TriPP) or diethylhexamethylporphyrin (DEHMP) macrocycles are reported. The investigated compounds are represented as M(TPP-DEHMP)M ( M = Co , Ni , Cu ) and M(TPP-TriPP)M ( M = Ni , Cu ), where TPP-DEHMP and TPP-TriPP are the tetraanions of 1-[5-(10,15,20-triphenylporphyrinyl)]-4-[10-(2,18-diethyl-3,7,8,12,13,17-hexamethylporphyrinyl)]benzene and 1,4-bis-[5″-(10″,15″,20″-triphenylporphy-rinyl)]benzene respectively. The UV-vis spectra of the neutral dimers can be simply obtained by superimposing the spectra of the two corresponding monomeric (TPP)M and (DEHMP)M units, the latter of which is approximated by (OEP)M (TPP and OEP are the dianions of tetraphenylporphyrin and octaethylporphyrin respectively). The reduction potentials of the dimeric porphyrins are similar to those of the combined individual monomeric units. This is also the case for all oxidations of M(TPP-TriPP)M as well as the first TPP- and DEHMP-centered oxidations of M(TPP-DEHMP)M to give porphyrin π-cation radicals. However, the second DEHMP macrocycle-centered oxidations of M(TPP-DEHMP)M to give porphyrin dications occur at half-wave potentials which are 50-100 mV easier than E1/2 for the same ring-centered oxidations of the corresponding (OEP)M monomers. The electrochemical data indicate that there is an electronic interaction between the (TPP)M and (DEHMP)M units of M(TPP-DEHMP)M only under conditions where both macrocycles of the dimer have been converted to a porphyrin π-cation radical.

Chemical, Physical and Electrochemical Characterization of Two Stainless Steels Exposed in NaVO3 Molten Salt at 700°C

2016 ◽  
Vol 12 (6) ◽  
pp. 602-611 ◽  
Author(s):  
O. Sotelo-Mazón ◽  
Cecilia Cuevas-Arteaga ◽  
J. Porcayo-Calderón ◽  
G. Izquierdo-Montalvo
Keyword(s):  
Molten Salt ◽  
Stainless Steels ◽  
Electrochemical Characterization

Electrochemical characterization of a truncated hydrogenase from Pyrococcus furiosus

2021 ◽  
pp. 138502
Author(s):  
Yuanming Wang ◽  
Yunhong Song ◽  
Chunling Ma ◽  
Hong-qi Xia ◽  
Ranran Wu ◽  
...  
Keyword(s):  
Pyrococcus Furiosus ◽  
Electrochemical Characterization

scholarly journals Structural, Magnetic, and Electrochemical Characterization of Iron(III) and Cobalt Complexes with Penta‐N 3 O 2 ‐dentate Ligands

2021 ◽  
Vol 2021 (15) ◽  
pp. 1498-1504
Author(s):  
Dominik Natke ◽  
Annika Preiss ◽  
Stephen Klimke ◽  
Takuya Shiga ◽  
Roman Boca ◽  
...  
Keyword(s):  
Cobalt Complexes ◽  
Electrochemical Characterization

Electrochemical characterization of a mechanically stressed passive layer

2011 ◽  
Vol 13 (12) ◽  
pp. 1361-1364 ◽  
Author(s):  
D. Sidane ◽  
O. Devos ◽  
M. Puiggali ◽  
M. Touzet ◽  
B. Tribollet ◽  
...  
Keyword(s):  
Passive Layer ◽  
Electrochemical Characterization
Sign in / Sign up

Export Citation Format

Share Document