ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

The validity of Peyrone's and J.ovrddot.organsen's rule for complex cupric compounds

J. Gažo, K. Serátorová, and M. Serátor

Slovak Technical University, Bratislava

Abstract: The validity of Peyrone's (Ann. 51, 1(1844)) and J.ovrddot.orgensen's (J. prakt. Chem. 33, 489(1886)) rule was studied in complex Cu(II) compds. Following this rule, α- and β-CuBr₂(NH₃)₂ (I) and α- and β-CuCl₂(NH₃)₂ (II) were prepd. in cryst. form by replacement of halogen with NH₃ in complex anions [CuX₄]^-- (marked as α). Compds. were also prepd. with NH₃ in the inner co.ovrddot.ordination sphere of the Cu(II) cation (marked as β). The properties of I depend upon whether it was prepd. according to Peyrone's or J.ovrddot.orgensen's scheme. Crystals of I derived from aq. solns. of NH₄Br have properties of β-CuBr₂(NH₃)₂; the NH₃ mols. are in the trans position. Cryst. trans-I on standing under an aq. soln. of NH₄Br changes to α-I. II exists in 2 forms, and the crystal structure of II is different from that of the α- or β-form.

Full paper in Portable Document Format: 131a3.pdf (in Slovak)

Chemical Papers 13 (1) 3–15 (1959)