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Published online by Cambridge University Press: 07 June 2017
X-ray powder diffraction data, unit-cell parameters, and space group for a C9H9I3N2O4 are presented [a = 17.000 (1) Å, b = 13.896 (1) Å, c = 12.597 (1) Å, unit-cell volume V = 2975.9 Å3, MW = 589.89, Tm (melting point) = 300(1) °C, ρc = 2.641 g cm−3, ρm = 2.66(3) g cm−3, Z = 8, space group Pbca]. All measured lines were indexed and are consistent with the Pbca space group. No detectable impurities were observed.