Crystal data for the decavanadates of 2,4-, 3,4-, and 3,5- dimethylpyridine and 2,4,6-trimethylpyridine

Indexed powder patterns of four monoclinic compounds of general formula (BH)₃H₃V₁₀O₂₈ .xH₂O, where x = 1-2.5 and B = 2,4-dimethylpyridine (J8), (C₇H₁₀N)₃H₃V₁₀O₂₈.1.0H₂O, 3,4-dimethylpyridine (J10), (C₇H₁₀N)₃H₃V₁₀O₂₈.1.0H₂O, 3,5-dimethylpyridine (J11), (C₇H₁₀N)₃H₃V₁₀O₂₈.2.5H₂O, and 2,4,6-trimethylpyridine (J12), (C₈H₁₂N)₃H₃V₁₀O₂₈.1.0H₂O are given. The cell dimensions of the unit cells with two molecules are: J8 a = 18.360 (2), b = 10.438 (2), c = 13.503 (2) Å, β = 95.99 (1)°; J10 a = 12.538 (3), b = 13.634 (5), c = 16.662 (5) Å, β = 111.82 (2)°; J11 a = 19.483 (5), b = 10.711 (2), c = 13.020 (4) Å, β = 101.52 (2)°; J12 a = 12.776 (3), b = 22.470 (4), c = 11.790 (3) Å, β = 91.54 (1)°.