scholarly journals Probing the structure of Copper(II)-Casiopeina type coordination complexes [Cu(O-O)(N-N)]+ by EPR and ENDOR spectroscopy

Author(s):  
Andrea Folli ◽  
Nadine Ritterskamp ◽  
Emma Richards ◽  
James A. Platts ◽  
Damien M. Murphy
2015 ◽  
Vol 12 (2) ◽  
pp. 13
Author(s):  
Muhamad Faridz Osman ◽  
Karimah Kassim

The coordination complexes of Co(II) and Zn(II) with Schiff bases derived from o-phenylenediamine and substituted 2-hydroxybenzaldehyde were prepared All compounds were characterized by Fourier transform infrared (FTIR) spectroscopy and Nuclear magnetic resonance (NMR) spectroscopy elemental analyzers. They were analyzed using impedance spectroscopy in the frequency range of 100Hz-1 MHz. LI and L2 showed higher conductivity compared to their metal complexes, which had values of 1.3 7 x 10-7 and 6.13 x 10-8 S/cm respectively. 


Author(s):  
José M. López-de-Luzuriaga ◽  
Miguel Monge ◽  
M. Elena Olmos ◽  
María Rodríguez-Castillo ◽  
Alba Sorroche

Computational studies on Au(i)–E(ii) in [R3PAu–(ECl3)] (E = Ge, Sn, Pb) model systems indicate the covalent dative nature from the [ECl3]− metalloligands to Au(i) fragments and predict the existence of Au(i)–Pb(ii) bonds using electron widthdrawing PR3 ligands.


2021 ◽  
Author(s):  
P. Mialane ◽  
C. Mellot-Draznieks ◽  
P. Gairola ◽  
M. Duguet ◽  
Y. Benseghir ◽  
...  

This review provides a thorough overview of composites with molecular catalysts (polyoxometalates, or organometallic or coordination complexes) immobilised into MOFs via non-covalent interactions.


Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3083
Author(s):  
Wisam A. Al Isawi ◽  
Gellert Mezei

Anion binding and extraction from solutions is currently a dynamic research topic in the field of supramolecular chemistry. A particularly challenging task is the extraction of anions with large hydration energies, such as the carbonate ion. Carbonate-binding complexes are also receiving increased interest due to their relevance to atmospheric CO2 fixation. Nanojars are a class of self-assembled, supramolecular coordination complexes that have been shown to bind highly hydrophilic anions and to extract even the most hydrophilic ones, including carbonate, from water into aliphatic solvents. Here we present an expanded nanojar that is able to bind two carbonate ions, thus doubling the previously reported carbonate-binding capacity of nanojars. The new nanojar is characterized by detailed single-crystal X-ray crystallographic studies in the solid state and electrospray ionization mass spectrometric (including tandem MS/MS) studies in solution.


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