RbSr

RbSr is a binary intermetallic compound consisting of rubidium and strontium. In the rubidium–strontium system, an equiatomic phase near a 1:1 Rb:Sr composition has been reported in phase diagrams, but the exact stoichiometry and crystal structure can depend on preparation conditions. The term may also be used to describe a family of intermetallic phases with similar composition.

Preparation and handling require inert-atmosphere techniques. Synthesis commonly involves direct reaction of elemental rubidium and strontium under carefully controlled, air-free conditions, often with melting and subsequent annealing. Both elements are highly reactive with air and moisture, so handling and storage of any resulting material typically demand glovebox or equivalent precautions and sealed containers.

Crystal structure and properties of RbSr intermetallics are not universally fixed; various phase variants have been observed in the Rb–Sr system. Intermetallics in this region generally exhibit metallic bonding and properties that depend on the specific phase and microstructure. Reported structures, where identified, may align with common intermetallic prototypes seen in alkali–alkaline earth systems, and experimental determination (for example by X-ray diffraction) is used to establish the precise arrangement of atoms. Physical properties such as melting point, hardness, and electrical conductivity are correspondingly phase-dependent.

Applications for RbSr are mainly within fundamental materials science and solid-state chemistry, with emphasis on understanding phase equilibria, bonding, and intermetallic growth rather than established commercial use.

Safety considerations reflect the reactive nature of rubidium and strontium, necessitating appropriate handling to prevent exposure to air and moisture and to manage potential pyrophoric or water-reactive hazards.