The Cu(II) complexes with organic ligand derived from thiosemicarbazide fragment are well known compounds with original biological and magnetic properties. Coordination compounds of Cu(II) with salicylaldehyde S-alkyl-isothiosemicarbazones were described as mononuclear in [1-3] or binuclear - in [4]. In this work we present a new type of coordination of the thiosemicarbazide fragment using the N(2) atom as a linker to obtain 1D system. The synthesis was realized in dimethylformamide in alkaline medium between copper(II) nitrate and organic reagent. The crystalline product was separate after three days by filtration, washed with DMF and dryed in vacuum. The X Ray crystallographic analysis shows a chiral structure with asymmetric space group: monoclinic Cc. The complex unit in this compound is CuL, and the set of coordinated donor atoms is O(1)N(1)N(4). The fourth position in the coordination sphere is occupied by N(2) atom from the neighboring molecule. The bound distances and angles, geometry of the chains, intra- and extra- chains interactions will be discussed in comparison with other coordination modes of the ligand. ORTEP representation of Cu(II) 1D compound The magnetic investigation was realized in the temperature range 1.8 - 300 K, and shows a antiferromagnetic interaction (coupling) between paramagnetic centers Cu(II) S=1/2 . These studies show a new possibility of the thiosemicarbazidic moiety to build polynuclear compounds. The N(2) atoms play an important role as a linker to obtain new Cu(II) system with original magnetic proprieties.