Hydrothermal Synthesis and Characterization of a Sandwich-type Tungstophosphate, (1,3-H(2)dap)(8)H-4[C0(4)(H2O)(2)(alpha-B-PW9O34)(2)](2).5H(2)O

作者：Wang Zi Liang^*; Wei Lin Heng; Li Ming Xue

来源：Chinese Journal of Structural Chemistry, 2013, 32(2): 311-315.

• polyoxometalate
• sandwich
• tungstophosphate
• cobalt
• keggin

A sandwich-type tungstophosphate, (1,3-H(2)claP)(8)H-4[Co-4(H2O)(2)(alpha-B- PW9O34)2.5H(2)O (1,3-dap = 1,3-diaminopropane), was hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction, IR and UV spectroscopy. The title compound crystallizes in triclinic, space group P1 with a = 13.691(3), b = 17.744(4), c = 20.620(5) angstrom, alpha =113.466(5), beta = 91.184(5), gamma = 104.223(5), v = 4414.3(17) angstrom(3), C24H96Co5N16O145P4W36, M-r. = 10143.09, D-c = 3.816 g/cm(3),mu(MoKa) = 24.210 mm(-1), F(000) = 4452, Z= 1, the final R = 0.0694 and wR = 0.1519 for 9910 observed reflections (I> 2 sigma(I)). The compound consists of two sets of tetra-transition metal-substituted sandwich frameworks, [Co-4(H2O)(2)(alpha-B-[PW9O34]9(-) having an inversion centre. Two lacunary alpha-B-[PW9034]9 - Keggin units are linked by a rhomb-like Co4O14(H2O)(2) cluster; in which the Co2+ ions are coordinated by one water molecule. Isolatedly protonated 1,3-H(2)dap(2+) units act as counter-ions to interact with the [Co-4(H2O)(2)(alpha-B-PW9O34)(2)](10-) heteropolyanions via hydrogen bonds, resulting in a three-dimensional framework.

• 出版日期2013
• 单位河南大学