YHSe crystallizes in the hexagonal P-6m2 space group. Y(1) is bonded in a distorted trigonal planar geometry to three equivalent H(1) and six equivalent Se(1) atoms. H(1) is bonded in a trigonal planar geometry to three equivalent Y(1) atoms. Se(1) is bonded to six equivalent Y(1) atoms to form a mixture of distorted edge, face, and corner-sharing SeY6 pentagonal pyramids.
YHSe crystallizes in the hexagonal P-6m2 space group. Y(1) is bonded in a distorted trigonal planar geometry to three equivalent H(1) and six equivalent Se(1) atoms. All Y(1)-H(1) bond lengths are 2.22 Å. All Y(1)-Se(1) bond lengths are 2.96 Å. H(1) is bonded in a trigonal planar geometry to three equivalent Y(1) atoms. Se(1) is bonded to six equivalent Y(1) atoms to form a mixture of distorted edge, face, and corner-sharing SeY6 pentagonal pyramids.