Ethylenediammonium chromate, $C_2H_{10}N_2{cdot}CrO_4$ 결정구조는 a=6.667(2), b=8.845(2), c=11.827(2) ${AA}$, 사방정계(Orthorhombic), 공간군 $P2_12_12_1$, 공간군 번호 19이며, Z=4, V=697.4(3) ${AA}{^3},;Dc=1.696gcm^{-3},;{mu}=1.594mm^{-1}$이었다. 구조분석은 중금속법으로 풀었으며, 최소 자승법으로 정밀화하였고, 최종 신뢰도 값들은 1204개의 회절반점에 대하여 $R_1=0.0254,;R_w=0.070,;R_{all}=0.0255$, S=1.133이었다. 두가지 이온들의 자료들은 기존 유사물질들의 자료에 상응하였으며, Ethylenediammonium 이온은 trans 구조로써 주위의 음이온과 사이에 많은 수소결합으로 연결되어 있다.
The crystal structure of Ethylenediammonium chromate, $C_2H_{10}N_2{cdot}CrO_4$, has been determined by X-ray crystallography. Crystal data: a=6.667(2), b=8.845(2), c:11.827(2) ${AA}$, Orthorhombic, $P2_12_12_1$(Space Group No=19), Z=4, V=697.4(3) ${AA}{^3},;Dc=1.696gcm^{-3},;{mu}=1.594mm^{-1}$. The structure was solved by Patterson method and refined by full matrix least-square methods using unit weights. The final R and S values were $R_1=0.0254,;R_w=0.070,;R_{all}=0.0255$ and S=1.133 for the observed 1195 reflections. Bond length and angles of two ions are similar to the previously reported data. The ethylenediammonium ion has trans-configuration and are linked through many hydrogen bonds with neighboring anions.
