The coordination polymers of metal-polycarboxylates have diverse topology structures and potential applications in many fields. In this paper, the hydroxyl polycarboxylic acids (malic acid, citric acid and tartaric acid) have been been employed to act as the building units, which have excellent chelating ability, hydrophilic nature and biological properties. Under water-alcohol mixed solvothermal conditions with the mild temperature (160-180oC), fifteen coordination polymers of transition metal-hydroxyl pol...