SN2803 Tin (II) Iodide Powder (CAS 10294-70-9)

Tin(II) Iodide (CAS 10294-70-9) Description

Tin(II) Iodide (CAS 10294-70-9), also known as stannous iodide, is an ionic tin salt of iodine with the formula SnI2. SnI2 has a layer structure, in which there is a layer stacking of I-Sn-I on top of each other. Bonding between molecules within a layer is of covalent and ionic type, while bonding between layers is of the molecular or Van der Waals type. SnI2 occurs in two modifications, one being red, the other yellow. The yellow is the stable form above 100. Percentage ionicity in both types is estimated to be 20%.

Tin(II) Iodide (CAS 10294-70-9) Specifications

Tin(II) Iodide (CAS 10294-70-9) Applications

Tin(II) Iodide (CAS 10294-70-9) was reported to have an absorption spectrum characterized by the indirect transition, with the bandwidth for indirect transition at 300°K, being 2.068 eV, and phonon energy of 54 meV. There is a shift of the forbidden bandwidth for indirect transitions to higher energies with reduced temperature, being typically 2.110 eV at 86°K. Photoluminescence was not observed at room temperature, but at 86°K two wide bands did emerge with maxima at 6294, which were observed to be the same whether emitted from a cleaved plane of a single crystal or from an end surface.

The only thermoelectric power measurement on the compound did indicate that Tin(II) Iodide is an ionic conductor in the temperature range 339-440. The mode of conduction in the temperature range employed in this work is not known for certain, but is believed to be mostly ionic, since SnI2 in pressed disk form has found application as either an anode or a cathode in the construction of solid state batteries incorporating solid electrolytes.

Reference

TITILAYO ADELAJA KUKU: PHOTOLYSIS OF ALPHA AND BETA-TIN DI IODIDE.

https://spiral.imperial.ac.uk/bitstream/10044/1/35630/2/Kuku-TA-1981-PhD-Thesis.pdf