Acta Cryst. (2008). E64, m311-m312  [ doi:10.1107/S1600536808000299 ]

cis-Bis(azido-N)bis(pyridine-2-carboxamide-²N¹,O)nickel(II)

M. Đakovic and Z. Popovic

Abstract: The title compound, [Ni(N₃)₂(C₆H₆N₂O)₂], was obtained as the first crystalline product from the reaction of Ni(NO₃)₂·6H₂O, picolinamide and NaN₃ in aqueous media. After a few days in the mother liquor, crystals of the cis isomer transformed into the trans isomer [Đakovic & Popovic (2007). Acta Cryst. C63, m507-m509]. The Ni atom exhibits a distorted octahedral environment and contains two azide ions and two planar N,O-chelating picolinamide ligands, all cis related. The dihedral angle between the two chelate rings is 82.43 (7)°. Pairs of molecules are linked by N-HN hydrogen bonds into cyclic R₂²(16) dimers, which are further packed into a three-dimensional framework by C(6) and C(8) chains by N-HN hydrogen bonds.

Online 9 January 2008

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