represent the total concentrations of mono- and diradicals
Based on the observed photoproducts and reaction kinetics and information available in the relative literatures [21, 25, 26], the photodegradation of TCNM might undergo an n-[PI] * transition to the diradical
A, followed by Nesmeyanov rearrangement to B, ring-closure to the oxazirane N-oxide C, and decomposition to CO[Cl.sub.2] and NOCl (Figure 8).
SYNTHESIS OF CHIRAL DIRADICAL
FOR MOLECULAR MAGNETIC MATERIALS
Next, the quantitative cleavage (pyrolysis) of the dimer at the two methylene-methylene bonds at about 680[degrees]C, yields the stable monomeric diradical
[x I x.sup.(2)] Initiator diradical
with 2 undecomposed peroxide groups generated by sequential decomposition.
Polymerization is probably of the tetramethylene diradical
complex (9) rather than the individual monomers.
The formation of diradical
species is thus considered negligible.
Further chapters tackle specific families of organic compounds, such as diradicals
He describes quantum mechanics for organic chemistry, fundamentals of organic chemistry, pericyclic reactions, diradicals
and carbenes, organic reactions of anions, solution-phase organic chemistry, and organic reaction dynamics, all of which he punctuates with personal interviews with leading lights in the field.
[C.sub.2] moities refer to two-carbon species such as [C.sub.2][H.sub.2] and to free radicals such as [C.sub.2]H radical or [[C.sub.2][H.sub.2]] diradicals
[3a] In 1947, Steacie also worked for the appointment of Gerhard Herzberg in the physics division of NRC, and Herzberg was to win the Nobel Prize in Chemistry in 1971 for his photochemical studies, including the generation of carbenes, which can exist as diradicals
. This concentration of expertise in free radicals prompted the Faraday Society of Great Britain to organize in 1952 an overseas meeting in Toronto on the subject, [3b,c] with more than 50 participants from Britain.