Solid phase
Official name
Caesium rhenium oxide
Secondary names
Cesium rhenium oxide; cesium perrhenate
CAS number
13768-49-5
Type
Family
ionic solid
Class
normal salt
Compound type
oxide
Chemical composition
Formula
$Cs^+.(ReO_4)^-$
Chemical formula
CsReO4
Elemental formula
(Cs+) Re O3 (O-)
Isotope mixture type
terrestrial abundance
4.0
  Formula Name Family Number min-max Mole fraction Isotope mole fraction State Relevance
$Cs^+$ Caesium cation element 1 0.5 1 constituent cation main
$(ReO_4)^-$ Rhenate anion chemical function 1 0.5 1 anionic radical main
Chemical functions
  Function Number
$(ReO_4)^-$ 1
Chemical bonds
  Bond Number
$Cs^+ \cdot O^-$ 1
$\dddot - \dddot - \dddot - Re \dddot - O^{-1/4}$ 1
Class
normal salts (07)
Type
simple normal salts (07.01)
Phase name
$\beta-CsReO4$
Phase type
crystalline
Crystal system
orthorhombic
Crystal class
dipyramidal
Crystal class symbol
mmm (D2h)
Crystal spacegroup
Pnma
Molar mass
383.11 $g/mol$
Density
5.15 - 5.19 $g/cm^3$
State NTP
solid
Phase transitions
Phase transition type Other phases Temperature - Pressure
solid-solid $\alpha-CsReO4$ T > 182°C
Refringence type
biaxial
Pure color
colorless
Color
colorless, white
Diaphaneity
transparent to translucent
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