Syntheses, Structures, and Magnetic Behavior of New Azide Linked Compounds with One- and Two-Dimensional Structures.

Three azide based compounds were synthesized employing aliphatic amines as site blocking agents: [Ni(N₃)(C₆H₁₆N₂)₂]ClO₄ (I) [C₆H₁₆N₂ = N,N'-diethylethylenediamine (DEDA)], [Cu₈(N₃)₁₆(C₆H₁₈N₄)₂] (II) [C₆H₁₈N₄ = tris(2-aminoethyl) amine (TREN)], and [Cu₇(N₃)₁₄(C₇H₁₉N₃)₂]·2H₂O (III) [C₇H₁₉N₃ = 3,3'-diamino-N-methyldipropylamine (DMDA)]. The compounds I and II have one-dimensional structure and III has a two-dimensional structure. Compound I is a simple linear cationic Ni-azide chain and compound II has Cu₆ azide units forming a column terminated by the copper-metalloligand generated in-situ during the course of the reaction. The charge compensation perchlorate anions occupy spaces in between the chains in I. Compound II packs in a herringbone arrangement, which is not commonly observed in low-dimensional structures. Compound III has one-dimensional copper-azide chains connected through copper-metalloligand forming the two-dimensional structure. All the three compounds exhibit anti-ferromagnetic behavior. [ABSTRACT FROM AUTHOR]