tion of technetium is very interesting in radio pharmaceuticals and related nuclear medicine.1,2 Different amine oxime ligands with varying hydrocarbon backbone length have been used to obtain technetium complexes.3 The title compound (Fig.1) is also interesting to us as part of a continuing investigation for hypoxia study. The amine oxime was synthesized by a reported procedure.1 The process consists of two steps. In the first step, the synthesis of chloroxime (3-chloro-3-methyl-2butanone oxime) is carried out by the reaction of 2methyl-2-butane and isoamylnitrite in presence of HCl at 0 ̊C. In the second step, 1,4-diaminobutane is added drop-wise to a methanolic solution of chloroxime at 0 ̊C; the mixture is then allowed to reflux for 16 h. A white precipitate appears after adjusting the pH in the range of 10 – 11. The final product is washed from hot methanol. Single crystals have been obtained from a methanol–chloroform solution by slow evaporation within a few days. The molecular structure of the title compound is shown in Fig. 2. The structure has a two-fold symme309 ANALYTICAL SCIENCES MARCH 1999, VOL. 15