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Synthesis and Structure of Ethylenediammonium Chromate  

NamGung, Hae (Department of Bio & Nano-Chemistry, Kookmin University)
Park, Sang-Su (Department of Bio & Nano-Chemistry, Kookmin University)
Publication Information
Korean Journal of Crystallography / v.17, no.1, 2006 , pp. 10-13 More about this Journal
Abstract
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.
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