Abstract
Low-temperature HCN radiolysis (conditions close to those in cosmic space) leads to formation of different molecular compounds; conjugated polymers [C=N–C=N]n, with conjugated chain growth, are formed (colour change orange → brown → black). The polymer gives a singlet EPR signal typical of polyconjugated systems, and crystals of 1,2-diaminomalonodinitrile are also formed. Electrical breakdowns and glow are observed on freezing the HCN; this Is connected with a brittle fracture of HCN crystals leading to electrical charge separation. The freezing out of HCN onto grains of interstellar dust under cosmic conditions would lead to effective coagulation of the dissipated substance at the expense of electrostatic attraction.
References
1.
10.1070/MC1994v004n01ABEH000330_bib1
Calvin
Chemical Evolution,
1969
2.
Sanchez R.A., Ferris J.P., Orgel L.E.
Science,
1966
3.
Ferris J.P., Edelson E.H.
Journal of Organic Chemistry,
1978
4.
Ferris J.P., Joshi P.C., Edelson E.H., Lawless J.G.
Journal of Molecular Evolution,
1978
5.
Ferris J.P., Hagan W.J.
Tetrahedron,
1984
6.
Stahler S.W.
Astrophysical Journal,
2002
7.
10.1070/MC1994v004n01ABEH000330_bib7
Meisse
Bull. Am. Astronom. Soc.,
1991
8.
10.1070/MC1994v004n01ABEH000330_bib8
Sagan
Bull. Am. Astronom. Soc.,
1991
9.
Zeitschrift fur Physikalische Chemie,
1962
10.
Watson J.H.
The Journal of Physical Chemistry,
1947
11.
Schmidt H., Meinert H.
Zeitschrift fur Anorganische und Allgemeine Chemie,
1957
12.
Ruske W., Ruske E.
Chemische Berichte,
1958
13.
10.1070/MC1994v004n01ABEH000330_bib13
Rappoport
Labortornye metody polucheniya chistykh gazov,
1963
14.
10.1070/MC1994v004n01ABEH000330_bib14
Barkalov
Khim. Vys. Energ.,
1990
15.
10.1070/MC1994v004n01ABEH000330_bib15
Physics, Chemistry of the Organic Solid, State,
1965
16.
Giauque W.F., Ruehrwein R.A.
Journal of the American Chemical Society,
1939
17.
Stull D.R.
Industrial & Engineering Chemistry,
1947
18.
Guo Hong S., Qu X., Yuan Fu X.
Journal of Molecular Structure THEOCHEM,
1992
19.
10.1070/MC1994v004n01ABEH000330_bib19
Cochran
5th Intl. Symp. on Free Radicals,
1961
20.
Cochran E.L., Adrian F.J., Bowers V.A.
Journal of Chemical Physics,
1962
21.
Kliss R.M., Matthews C.N.
Proceedings of the National Academy of Sciences of the United States of America,
1962
22.
Moser R.E., Fritsch J.M., Westman T.L., Kliss R.M., Matthews C.N.
Journal of the American Chemical Society,
1967