Acta Crystallographica Section C

Crystal Structure Communications

Volume 59, Part 10 (October 2003)

Acta Cryst. (2003). C59, m392-m395    [doi:10.1107/S0108270103017621]

Bis(dicyanamido)(diethylenetriamine-³N)copper(II) and (dicyanamido)(triethylenetetramine-⁴N)copper(II) dicyanamide

J. Luo, X-G. Zhou, L.-H. Weng and X.-F. Hou

Abstract: Two new complexes, [Cu(C₂N₃)₂(dien)] (dien is diethylenetriamine, C₄H₁₃N₃), (I), and [Cu(C₂N₃)(trien)](C₂N₃) (trien is triethylenetetramine, C₆H₁₈N₄), (II), have been characterized by single-crystal X-ray diffraction. Both complexes display a distorted tetragonal-pyramidal geometry. In (I), the Cu atom is coordinated in the basal plane by three diethylenetriamine N atoms [Cu-N  =  2.000  (2), 2.004  (2) and 2.025  (2)  Å] and one terminal N atom [Cu-N  =  1.974  (2)  Å] from one monodentate dicyanamide group, and in the apical position by one terminal N atom [Cu-N  =  2.280  (2)  Å] from the other monodentate dicyanamide group. In (II), the Cu atom is surrounded by four triethylenetetramine N atoms [Cu-N  = 2.012  (2), 2.014  (2), 2.019  (2) and 2.031  (2)  Å in the basal plane] and a terminal N atom [Cu-N  =  2.130  (2)  Å in the apical site] from one monodentate dicyanamide group. The other dicyanamide anion is not directly coordinated to the metal atom. In both (I) and (II), hydrogen-bond interactions between the uncoordinated terminal N atoms of two dicyanamide ions and the amine H atoms lead to the formation of three-dimensional networks.

Formula: [Cu(C₂N₃)₂(C₄H₁₃N₃)] and [Cu(C₂N₃)(C₆H₁₈N₄)](C₂N₃)

Online 16 September 2003

	Structure factor file (CIF format) (116.3 kbytes) Contains datablock I
	Structure factor file (CIF format) (156.3 kbytes) Contains datablock II

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