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<正>A sandwich-type tungstophosphate, (1,3-H_2dap)_8H_4[Co_4(H_2O)_2(α-B- PW_9O_(34))_2]_2·5H_2O (1,3-dap = 1,3-diaminopropane), was hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction, IR and UV spectro