Crystal structure of N-(1-ethylcarbamoyl-tetrazol-5-yl)-O-(4-tolyl)-isourea

C 12 H 15 N 7 O 2 , M = 546.59, triclinic space group P [unk], a = 7.578(2), b = 9.082(3), c = 11.966(1) Å, α = 99.49(2), β = 90.84(2), γ = 114.34(3)°, Z = 2, V = 737(1) Å 3 , D x = 1.303 g/cm −3 , λ = 0.71069 Å, μ = 0.9 cm −1 , F (000) = 304. The crystal structure was determined by direct methods and refined by least-squares procedure to a discrepancy factor R = 0.040 ( R w = 0.037).