Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Unexplored reactivity of (Sn)2- Oligomers with transition metals in
  low-temperature solid-state reactions   Chalcogenides (Q = S, Se, Te), one of the most important family of materials
in solid-state chemistry, differ from oxides by their ability to form
covalently-bonded (Qn)2- oligomers. Each chalcogen atom within such entity
fulfills the octet rule by sharing electrons with other chalcogen atoms but
some antibonding levels are vacant. This makes these oligomers particularly
suited for redox reactions in solid state, namely towards elemental metals with
a low redox potential that may be oxidized. We recently used this strategy to
design, at low temperature and in an orientated manner, materials with 2D
infinite layers through the topochemical insertion of copper into preformed
precursors containing (S2)2- and/or (Se2)2- dimers (i.e. La2O2S2, Ba2F2S2 and
LaSe2). Herein we extend the validity of the concept to the redox activity of
(S2)2- and (S3)2- oligomers towards 3d transition metal elements (Cu, Ni, Fe)
and highlight the strong relationship between the structures of the precursors,
BaS2 and BaS3, and the products, BaCu2S2, BaCu4S3, BaNiS2 and BaFe2S3. Clearly,
beyond the natural interest for the chemical reactivity of oligomers to
generate compounds, this soft chemistry route may conduct to the rational
conception of materials with a predicted crystal structure.

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The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
2
The categories of this paper are: math
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
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The categories of this paper are: bayes-an
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The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys