Synthesis and crystal growth of microcrystals of the cubic and new orthorhombic polymorphs of (NH4)2SnCl6

Abstract

Ammonium hexachlorostannate single crystals were obtained from gas phase of decomposition products of SnCl 4 ·5NH 3 formed in reaction of liquid tin(IV) chloride with gaseous ammonia. The crystals of both cubic (NH 4 ) 2 SnCl 6 , obtained hitherto only by crystallization from solution, and of the formerly unknown orthorhombic polymorph were deposited on inner walls of the quartz reactor used. The values of the structure refinement factor R obtained is 0.01. Unit cell parameters of the new orthorhombic form of ammonium hexachlorostannate were determined and are reported.

Excitation-Wavelength-Dependent Emission Behavior in (NH4)2SnCl6 via Sb3+ Dopant

“…In general, the assignments seem to be in good agreement with the usual coordinate treatment of octahedral [SnCl x ] 2– anions. It is interesting to notice that the peak position of the vibrational band at 322.1 cm –1 for the sample with the introduced Sb ions shifts slightly toward the low wavenumber at room temperature, which is associated with the successful entry of Sb ions into the lattice …”

“…It is interesting to notice that the peak position of the vibrational band at 322.1 cm −1 for the sample with the introduced Sb ions shifts slightly toward the low wavenumber at room temperature, which is associated with the successful entry of Sb ions into the lattice. 40 Excitation-dependent PL spectroscopy was performed to understand in more detail the displacement of the emission peaks exhibited by the sample as the UV excitation changed. As shown in Figure 3a, two emission centers are observed at 590 and 734 nm at room temperature.…”

“…It is interesting to notice that the peak position of the vibrational band at 322.1 cm –1 for the sample with the introduced Sb ions shifts slightly toward the low wavenumber at room temperature, which is associated with the successful entry of Sb ions into the lattice. 40 …”