Synthetic transformations of tetraaza macrocyclic metal complexes. Preparation of the corrinoid and other unsaturated ring systems by oxidative dehydrogenation reactions of nickel(II), copper(II), and cobalt(II) macrocycles

1975 ◽  
Vol 97 (12) ◽  
pp. 3359-3366 ◽  
Author(s):  
S. C. Tang ◽  
R. H. Holm
2001 ◽  
Vol 676 ◽  
Author(s):  
J. A. Toledo ◽  
N. Nava ◽  
X. C. Sun ◽  
X. Bokhimi

ABSTRACTZnFe2O4 nanoparticles were prepared by hydrothermal reduction approach. A considerable amount of α-Fe2O3 was segregated in the as-synthesized sample, which diffused into the tetrahedral and octahedral sites of the ZnFe2O4 spinel structure with increasing the annealing temperature. The introduction of Fe3+ into the tetrahedral positions was observed by Mössbauer spectra. Magnetization measurements showed an unusual ferrimagnetic behavior of the ZnFe2O4 phase, even at room temperature, confirming the introduction of Fe3+ into the tetrahedral sites of the spinel structure. Catalytic activity measured in the oxidative dehydrogenation of 1-butene reaction increased with increasing annealing temperature, indicating that those interactions of Fe3+ in tetrahedral and octahedral positions also promotes the activity and selectivity to butadiene formation.


RSC Advances ◽  
2018 ◽  
Vol 8 (20) ◽  
pp. 11222-11229 ◽  
Author(s):  
Wenjun Cheng ◽  
Xueting Liu ◽  
Na Li ◽  
Jiatong Han ◽  
Shuangming Li ◽  
...  

Boron doped graphene for the oxidative dehydrogenation reactions.


2019 ◽  
Vol 20 (14) ◽  
pp. 3483 ◽  
Author(s):  
Giovanni Salassa ◽  
Alessio Terenzi

Oxadizoles are heterocyclic ring systems that find application in different scientific disciplines, from medicinal chemistry to optoelectronics. Coordination with metals (especially the transition ones) proved to enhance the intrinsic characteristics of these organic ligands and many metal complexes of oxadiazoles showed attractive characteristics for different research fields. In this review, we provide a general overview on different metal complexes and polymers containing oxadiazole moieties, reporting the principal synthetic approaches adopted for their preparation and showing the variety of applications they found in the last 40 years.


ChemSusChem ◽  
2013 ◽  
Vol 6 (5) ◽  
pp. 732-732
Author(s):  
Viviane Schwartz ◽  
Wujun Fu ◽  
Yu-Tung Tsai ◽  
Harry M. Meyer ◽  
Adam J. Rondinone ◽  
...  

2014 ◽  
Vol 231 (1-3) ◽  
pp. 123-129 ◽  
Author(s):  
Faiza B. Khan ◽  
Venkata D. B. C. Dasireddy ◽  
K. Bharuth-Ram ◽  
H. Masenda ◽  
H. B. Friedrich

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