抄録
The structure of 1-methyl-4-[2-(4-hydroxyphenyl)ethenyl)]pyridinium hydrogensquarate was determine by X-ray crystallography. A symmetry operation (-x+1, -y, -z) generates the whole molecule. The compound crystallized in a monoclinic system and was characterized thus: P21/c, a = 7.3400(15), b = 9.4400(19), c = 23.000(5)Å, β = 94.00(3)°, Z = 4, V = 1589.8(6)Å3. The crystal structure was solved by direct methods and refined by full-matrix least-squares on F2 to final values of R1 = 0.0738 and wR2 = 0.1396.
