Influence of hydrogen bonding on the assembly of six-membered vanadium borophosphate cluster anions:: Synthesis and structures of (NH4)2(C2H10N2)6[Sr(H2O)5]2[V2P2BO12]6•10H2O, (NH4)2(C3H12N2)6[Sr(H2O)4]2[V2P2BO12]6•17H2O and (NH4)3(C4H14N2)4.5[Sr(H2O)5]2[Sr(H2O)4][V2P2BO12]6•10H2O

Three new strontium vanadium borophosphate compounds, (NH4)(2)(C2H10N2)(6)[Sr(H2O)(5)](2)[V2P2BO12](6).10H2O (Sr-VBPO 1) (1), (NH4)(2)(C3H12N2)(6)[Sr(H2O)(4)](2)[V2P2BO12](6).17H(2)O (Sr-VBPO2) (2), and (NH4)(3)(C4H14N2)(4.5)[Sr(H2O)(5)](2)[Sr(H2O)(4)] [V2P2BO12](6)(-).10H(2)O (Sr-VBPO3) (3) have been synthesized by interdiffusion methods in the presence of diprotonated ethylenediamine, 1,3-diaminopropane, and 1,4-diaminobutane. Compound 1 has a chain structure, whereas 2 and 3 have layered structures with different arrangements of [(NH4)superset of[V2P2BO12](6)] cluster anions within the layers. Crystal data: (NH4)(2)(C2H10N2)(6)[Sr(H2O)(5)](2)[V2P2BO12](6).10H(2)O, monoclinic, space group C2/c (no. 15), a = 21.552(1) Angstrom, b = 27.694(2) Angstrom, c = 20.552(1) Angstrom, beta = 113.650(1)degrees, Z = 4; (NH4)(2)(C3H12N2)(6)[Sr(H2O)(4)](2)[V2P2BO12](6). .17H(2)O, monoclinic, space group I2/m (no. 12), a = 15.7618(9) Angstrom, b = 16.4821(9) Angstrom, c = 21.112(1) Angstrom, beta = 107.473(1)degrees, Z = 2; (NH4)(3)(C4H14N2)(4.5)[Sr(H2O)(5)](2)[Sr(H2O)(4)] [V2P2BO12](6).10H(2)O, monoclinic, space group C2/e (no. 15), a = 39.364(2) Angstrom, b = 14.0924(7) Angstrom, c = 25.342(1);Angstrom, Angstrom = 121.259(1)degrees, Z = 4. The differences in the three structures arise from the different steric requirements of the amines that lead to different amine-cluster hydrogen bonds.