Crystal Structure of Nonaaquayttrium(III) Bromate at ۱۰۰ K

The structure of the nonaaquayttrium (III) bromate, [Y(H۲O)۹](BrO۳)۳, at low temperature (۱۰۰ K) has been studied by means of single-crystal X-ray diffraction. Crystallography shows a hexagonal unit cell, space group P۶۳/mmc (No. ۱۹۴) with Z = ۲, a = b = ۱۱.۷۱۰۴(۱۱) Å, c = ۶.۶۲۵۹(۵) Å and V = ۷۸۶.۹۰(۱۲) Å۳ at ۱۰۰ K. The hydrated trivalent yttrium(III) ion forms a tricapped trigonal prism, in which the yttrium(III) ion is surrounded by six equidistant water molecules in the prism and three more distant water molecules in capping positions with M-O bond distances of ۲.۳۷۰(۲) and ۲.۴۴۶(۳) Å, respectively. Relatively strong hydrogen bonds (۲.۸۱۸ and ۲.۸۵۱ Å) from water molecules to the bromate ions stabilize the trigonal prism around the yttrium(III) ions.

کلیدواژه ها:

Crystal structure ، Yttrium ، Hydrate ، Bromate ، Single crystal X-ray diffraction