Formation of Nanoparticles of a New Metastable Copper
Compound in the Copper Acetate Hydrate/Poly(acrylonitrile)
Heterogeneous System

V. M. Novotortseva, V. V. Kozlovb, Yu. M. Korolevb, G. P. Karpachevab, and L. V. Kozhitovc

a Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences,
Leninskii pr. 31, Moscow, 119991 Russia

b Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninskii pr. 29, Moscow, 119991 Russia

c Moscow Institute for Steel and Alloys, Leninskii pr. 4, Moscow, 119991 Russia

Received December 17, 2007

Abstract—We use X-ray powder diffraction to study heterogeneous solid-phase reactions induced by IR radi-
ation in the system Cu(OOCCH3)2 · H2O/PAN and intermediate copper compounds in the synthesis of copper
nanoparticles. The composite Cu(OOCCH3)2 · H2O/PAN after annealing contains crystallites of copper (lCu =
16 nm), a new metastable compound Cux>2O frame0 = 20 nm), and Cu2O frame1 = 20 nm). After 45 days of
air exposure, the intensity of Cux>2O reflections in the composite decreases dramatically, whereas that of cop-
per reflections increases. Cux>2O has a monoclinic unit cell with the parameters a = 5.424, b = 3.196, c =
3.072 Å, = 119.51frame2.

DOI: 10.1134/S003602360807005X

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