Complexes with the ligand O2 are called dioxygen complexes. Myoglobin, haemoglobin, hemerythrin, and hemocyanin are only a few examples of the proteins that carry oxygen and are studied in this field. Many of the compounds formed by transition metals and O2 are reversible in nature. With a volume percentage of 20%, dioxygen is a significant part of the earth's atmosphere. With two unpaired electrons in each of the doubly degenerate HOMOs, molecular oxygen is a triplet in its ground state. Since it possesses a double bond in its formal structure, molecular oxygen is a strong oxidant in terms of thermodynamics. O2 may react with ground-state singlet molecules, but due to spin conservation, this reaction is kinetically unfavourable and necessitates the use of additional ground-state radicals, such as flavins, pterins, or metal ions.
Title : Oxidation of methane to methanol over pairs of transition metal ions stabilized in the zeolite matrices
Jiri Dedecek, J Heyrovsky Institute of Physical Chemistry , Czech Republic
Title : Distant binuclear vanadium V(II) cationic sites in zeolites and their reactivity
Jiri Dedecek, J Heyrovsky Institute of Physical Chemistry , Czech Republic
Title : Memory characteristics and diffusionless phase transformations in shape memory alloys
Osman Adiguzel, Firat University, Turkey
Title : The Concept and Implications of Low Carbon Green Growth
Dai Yeun Jeong, Asia Climate Change Education Center, Korea, Republic of
Title : The Fe PNP 15 H2O catalyst reduction catalytic test and its valorisation as acid catalyst to the methylal synthesis
Rabeharitsara Andry Tahina, GPCI-ESPA Antananarivo University, Madagascar