The Crystal Structure of <i>cis</i>-Dinitrotetraamminecobalt (III) Nitrate

Abstract

Abstract The crystal structure of cis-dinitrotetraamminecobalt(III) nitrate, [Co(NO2)2(NH3)4]NO3, has been determined from three dimensional X-ray diffraction data. The dimensions of the orthorhombic unit cell are: a=12.19 Å, b=7.18 Å, c=10.92 Å, and Z=4. The space group is P212121. The structure has been refined by the three-dimensional Fourier and least-squares methods to R=0.095. The complex ion has a slightly distorted octahedral coordination, with six N atoms at 1.96±0.02 Å. The complexes are tightly bound together by N–H···O interactions, thus forming a three-dimensional network.