Two novel alkali-metal uranyl borophosphates have been prepared and characterized for the first time, namely; K-5(UO2)(2)[B2P3O12(OH)](2)(OH)(H2O)(2) and K-2(UO2)(12)[B(H2PO4)(4)] (PO4)(8)(OH) (H2O)(6) denoted as KUPB1 and KUPB2, respectively. KUPB1 was obtained hydrothermally at 220 degrees C and crystallizes in a monoclinic structure in the chiral space group P2(1). The unit cell parameterS of KUPB1 are a = 6.7623(2) angstrom, b = 19.5584(7) angstrom, c = 11.0110(4) angstrom, alpha = gamma = 90 degrees, beta = 95.579(3)degrees, and V = 1449.42(8) angstrom(3). It features a unique three-dimensional (3D) open-framework structure, composed of two corner-sharing linked one-dimensional (1D) anionic borophosphates (BP), [B2P3O13](5-), along the a axis and uranyl phosphate (UP), [(UO2)(PO4)(3)](7-), chains along the c axis, further bridged by PO4 tetrahedra. Multi-intersectional channels can be observed within the structure, in which the largest 11-ring (11-R) tunnel size is,similar to 7.0 angstrom x 8.8 angstrom. Its simplified framework can be described as a new 4-nodal net topological type with a point symbol of {4.8(4).10}{4(2).6}(2){4(3).6(2).8(3).10(2)}{8(2).10}. By modification of the synthetic conditions of KUPB1 through an increase in the amount of H3BO3 as flux 4-fold and a reduction Of water as the reaction medium, the novel compound KUPB2 is generated. The unit cell parameters of KUPB2 are a = b = 21.8747(3) angstrom, c = 7.0652(2) angstrom, alpha = beta = gamma = 90 degrees, and V = 3380.72(12) angstrom(3). KUPB2 crystallizes in a tetragonal structure in the polar space group 1 (4) over bar 2m, and its structure is based on a highly complex 3D framework, {(UO2)(12)[B(PO4)(4)] (PO4)(8)}(9-), in which 1D 8-R UP [(UO2)(PO4)](-) tubes can be observed along the c axis. The [(UN2 (PO4)](-) tubes consist of three uranyl chains along the c axis, which are linked alternately by [PO4](3-) tetrahedra. Those isolated 1D [(UO2)(PO4)](-) tubes are further bridged through [(UO2)(4)B(PO4)(4)](-) clusters, forming an exceptional 3D open framework structure. Its simplified cation network is a new 5-nodal net topological type such as {3(2).4(3).5.6(2).7.8}(8){3(4).4(5).5(4).6(2)}(8){4.6(2).8(3)}(4){4(2).6}(4){4(4).6(2)}. Their "facile hydrothermal synthetic routes; porous structure topology, thermal stability, and Raman spectroscopy properties are reported and discussed.