论文信息 - Crystal structure of diammoniumpentasulfide (NH4)2S5

Crystal structure of diammoniumpentasulfide (NH4)2S5

Abstract. The structure of (NH4)2S5 is characterized by tetrahedral NH 4 cations and helical S5 anions with all-trans conformation (skrew order k = 3.76; <7(S-S) = 2.057 Ä ( 3 x ) and 2.073 Ä ( l x ) ; j8(S/S/S) = 107.2-109.0°; dihedral angle = 67.1°; 68.0°). The analysis of the rigid body motion does not change the ratio of the different bond lengths. (/21/c; a = 5.427, b = 16.226, c = 9.430 Ä, β = 105.31°; Ζ = 4; 1626 hkl; R = 0.028).

K. Peters | H. Schnering | Ν. K. Goh

[1] P. Böttcher,et al. Darstellung und kristallstruktur von dicaesiumpentasulfid (Cs2S5) , 1982 .

[2] P. Böttcher. Synthesis and crystal structure of the dirubidiumpentachalcogenides Rb2S5and Rb2Se5 , 1979 .

[3] P. Böttcher. Synthesis and crystal structure of the dirubidiumpentachalcogenides Rb2S5 and Rb2Se5 , 1979 .

[4] P. Main,et al. The application of phase relationships to complex structures. III. The optimum use of phase relationships , 1971 .

[5] K. N. Trueblood,et al. On the rigid-body motion of molecules in crystals , 1968 .

[6] F. Tuinstra. Structural aspects of the allotropy of sulfur and the other divalent elements , 1967 .