Table 1 Crystallographic data for OBH crystal

Chemical formula

C₁₀H₁₄N₄O₄

Formula weight

254.25

Temperature

296 (2) K

Wavelength

1.54178 Å

Crystal size

0.020 × 0.120 × 0.230 mm

Crystal habit

Clear light colorless flakes

Crystal system

Monoclinic

Space group

P 1 21/n 1

Unit cell dimensions

a = 6.3630 (5) Å, α = 90^o

b = 4.6609 (4) Å, β = 91.37^o

c = 20.7562 (19) Å, γ = 90^o

Volume

615.40 (9) ų

Z

2

Density (calculated)

1.372 g/cm³

Absorption coefficient

0.915 mm⁻¹

F (000)

268