






Acta Cryst. (2005). C61, m151-m154 [doi:10.1107/S0108270105003446]
N4)bis(nitrato-
O)copper(II) and bis(nitrato-
O)tetrakis(1-propyl-1H-1,2,4-triazole-
N4)copper(II)Abstract: The copper(II) environments for tetrakis(1-ethyl-1,2,4-triazole)dinitratocopper(II), [Cu(NO3)2(C4H7N3)4], and tetrakis(1-propyl-1,2,4-triazole)dinitratocopper(II), [Cu(NO3)2(C5H9N3)4], are distorted square bipyramidal. Both structures are centrosymmetric, with the copper(II) ions located at inversion centers coordinated by four N atoms of four triazole molecules and by two O atoms of two nitrate ions in an elongated octahedral geometry. This elongation is a result of the Jahn-Teller effect. The largest distortion is that of the N-Cu-O angles, which differ from 90° by 5.68 (10)° in the ethyl and 5.59 (8)° in the propyl derivative.
Formula: [Cu(NO3)2(C4H7N3)4] and [Cu(NO3)2(C5H9N3)4]
![]() ![]() Structure factor file (CIF format) (117.2 kbytes) | |
![]() ![]() Structure factor file (CIF format) (135.8 kbytes) | |
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