Cesium isopropoxide Cs(OiPr) was reported to be polymeric [Cs(µ4-OiPr)]∞ (isostructural to its K analogue). Cs(OiPr) ws reported to be powder soluble in hydrocarbons (α = 1), it was characterised by mass spectroscopy and poweder XRD.
Cs(OiPr) sublimes under deep vacuum (10-6 Torr) despite its polymeric nature. Surprisingly Cs(OiPr) has lower sublimation temperature than RbOiPr (170°C vs. 200°C). Due to its volatility, Cs(OiPr) is potentially applicable as cesium MOCVD precursor.
Cesium tert-butoxide Cs(OtBu) decomposes upon heating, in contrast to sublimable rubidium tert-butoxide, and thus is not promising as cesium MOCVD precursor.