The crystal structures of imidazole-[2-(2-hydroxо-benzylidene)-n-(prop-2-en-1-yl) hydrazincarbothioamide]-copper(II) and (3,5-dibromopyridine)-[2-(2-hydroxоbenzylidene)-n-(prop-2-en-1-yl)hydrazinecarbothioamide]copper(II) NITRATES