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