: X-ray structure determination of bis{(-[N-(2-[2-hydroxyethylamino]ethyl)salicylaldiminato]- perchlorate cadmium(II))}monohydrate ([(Cd sadol ClO4)(2)] center dot H2O0) and two modifications of bis{(-[N-(2-[2-hydroxyethylamino]ethyl)salicylaldiminato]-