Alkalimetall-Oxoantimonate: Synthesen, Kristallstrukturen und Schwingungsspektren von ASbO2 (A = K, Rb), A4Sb2O5 (A = K, Rb, Cs) und Cs3SbO4

Single-crystal Raman spectroscopy of natural paulmooreite Pb2As2O5 in comparison with the synthesized analog

“…However the presence of two non-equivalent MoO 5 (H 2 O) units makes it difficult to identify and assign the vibrations of the unit since there may be some coincidence of the bands. A study on some pyroantimonite compounds had been published (Hirschle and Röhr 2000). In Cs 4 Sb 2 O 5 , the SbO 3 pyramids of the [Sb 2 O 5 ] 4-unit have the 180° orientation.…”

“…Its Raman spectrum is similar to that of paulmooreite in the 800-600 cm -1 region; a strong band at 700, a medium band at 650, and a weak band at 615 cm -1 (Fig. 4 of Hirschle and Röhr 2000). The first two bands were assigned to terminal Sb-O and the last to bridging Sb-O vibrations.…”

Synthesis, Crystal Structure, and Properties of Ag3SbO4

“…With respect to positions and intensities of the X-ray powder reflections, Ag 3 SbO 4 appears to be closely related to Ag 6 (SiO 4 )(SO 4 ) [26]. However, attempts to refine the structure starting from the structure parameters of Ag 6 (SiO 4 )(SO 4 ) including isolated tetrahedral SbO 4 groups as found in Cs 3 SbO 4 [27] were not successful. According to the ab initio structure solution using EN-DEAVOUR [18,19], Ag 3 SbO 4 turned out to be an isostructural analogue of Ag 3 RuO 4 [20].…”

“…The corresponding alkali metal antimonates M 3 SbO 4 with M = Li, Na, K [33][34][35] [36], the ionic radius of monovalent silver ranges between those of Na + and K + , which can be well accommodated by the anionic partial structure formed by chains of octahedra. (In contrast, for the larger Rb + and Cs + the anionic partial structure consists of isolated tetrahedral orthoanions [27].) More probably, the difference between Ag + and the monovalent alkali metal ions concerning their respective preferred oxygen coordination provokes the relatively small changes of the crystal structure from M 3 SbO 4 to Ag 3 SbO 4 .…”

Synthesis and characterization of a new quaternary lanthanum oxythioantimonite: La6Sb4O12S3

“…The antimony atom sits on a mirror plane such that the [SbO 3 ] 3− has C s symmetry, yielding a pattern of three high energy and three lower energy vibrations that result from two A 1 + E sets of peaks, where E vibrations are no longer degenerate. The observed shifts can be compared to those found for the antimonite Cs 4 Sb 2 O 5 possessing a C s symmetry around antimony [35].…”