Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin chemistry of sp2 nanocarbons   Suggested in the paper is the consideration of stable radicals of sp2
nanocarbons from the standpoint of spin-delocalized topochemistry.
Characterized in terms of the total and atomically-partitioned number of
effectively unpaired electrons as well as of the distribution of the latter
over carbon atoms and described by selectively determined barriers of different
reactions exhibiting topological essence of intermolecular interaction, sp2
nanocarbons reveal a peculiar topokinetics that lays the foundation of the
stability of their radical properties.

29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
18
The categories of this paper are: econ
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex