Functional nickel thiosalen complexes: structure and solid-state packing of a transition metal-based surfactant

The complex NiBr2(2-C12H25SC6H4CHNCH2CH2NCHC6H4SC12H25-2) (1) was prepared from the ligand 2-C12H25SC6H4CHNCH2CH2NCHC6H4SC12H25-2 (3) and NiBr2. Paramagnetic 1 was characterized by combustion analyses, 1H and 13C NMR spectroscopy, Vis–NIR spectroscopy, measurement of its magnetic susceptibility, and single-crystal X-ray diffraction. The crystal structure of 1 features octahedral coordination of Ni(II) with axial bromides and fully extended interdigitated alkyl chains. There are significant differences between the solid state structures of 1 and NiBr2(2-C6H12SC6H4CHNCH2CH2NCHC6H4SC6H12-2) (2), a previously reported homologue.