Rb3Ti3Te11

Area of Science:

• Solid-state chemistry
• Inorganic synthesis
• Crystallography

Background:

• The synthesis of novel ternary telluride compounds is crucial for exploring new materials with unique structural and electronic properties.
• Titanium-tellurium systems offer potential for complex anionic frameworks.

Purpose of the Study:

• To synthesize and characterize a new ternary rubidium titanium telluride compound.
• To elucidate the crystal structure of Rb(3)Ti(3)Te(11) and understand its structural motifs.

Main Methods:

• Single-crystal X-ray diffraction was employed to determine the crystal structure.
• High-temperature solid-state reaction was used for the synthesis of the compound.

Main Results:

• Trirubidium trititanium undecatelluride (Rb(3)Ti(3)Te(11)) was successfully synthesized at 773 K.
• The crystal structure revealed one-dimensional [Ti(3)Te(11)(3-)] chains composed of face-sharing pentagonal TiTe(7) bipyramids and distorted TiTe(6) octahedra.
• These chains exhibit hexagonal closest packing, with rubidium atoms occupying interstitial sites. The compound is isostructural with Cs(3)Ti(3)Te(11).

Conclusions:

• The synthesis and structural determination of Rb(3)Ti(3)Te(11) expand the known family of ternary titanium tellurides.
• The complex Te-Te bonding network precludes simple assignment of formal oxidation states.
• The structural similarity to Cs(3)Ti(3)Te(11) suggests potential trends in this class of compounds.