Cesium and Cesium Compounds

Tin Halide Perovskite Epitaxial Films on Gold Surfaces: Atomic Structure and Stability

“…The decrease of the Cs amount is higher than that of Br, therefore a formation of metallic Cs via a reducing reaction and subsequent evaporation may take place as well. [ 44 ] The observed decrease in Au intensity (see Figure S9 and Table S1, Supporting Information) is an additional demonstration of the formation of an oxide layer at the top surface, increasing the thickness of the adlayer and thus decreasing the intensity of gold recorded by XPS. We note, LEED measurements after air exposure do not show any crystalline structure anymore (see Figure S11, Supporting Information), supporting the view of detrimental changes due to air exposure.…”

Tin Halide Perovskite Epitaxial Films on Gold Surfaces: Atomic Structure and Stability

“…The decrease of the Cs amount is higher than that of Br, therefore a formation of metallic Cs via a reducing reaction and subsequent evaporation may take place as well. [ 44 ] The observed decrease in Au intensity (see Figure S9 and Table S1, Supporting Information) is an additional demonstration of the formation of an oxide layer at the top surface, increasing the thickness of the adlayer and thus decreasing the intensity of gold recorded by XPS. We note, LEED measurements after air exposure do not show any crystalline structure anymore (see Figure S11, Supporting Information), supporting the view of detrimental changes due to air exposure.…”

Modular Synthesis of γ-Valerolactone-Based Ionic Liquids and Their Application as Alternative Media for Copper-Catalyzed Ullmann-type Coupling Reactions

“…40 When Cs 2 CO 3 as a base was used in iPrOH, 65% isolated yield was obtained. By the replacement of toxic Cs 2 CO 3 (LD 50(rat, oral) = 1000 mg/kg) 41 with anhydrous sodium-acetate, no reaction was detected in iPrOH. Similarly, when GVL was used as a solvent no conversion was observed.…”

Tin Halide Perovskite Epitaxial Films on Gold Surfaces: Atomic Structure and Stability

“…The decrease of the Cs amount is higher than that of Br, therefore a formation of metallic Cs via a reducing reaction and subsequent evaporation may take place as well. [ 44 ] The observed decrease in Au intensity (see Figure S9 and Table S1, Supporting Information) is an additional demonstration of the formation of an oxide layer at the top surface, increasing the thickness of the adlayer and thus decreasing the intensity of gold recorded by XPS. We note, LEED measurements after air exposure do not show any crystalline structure anymore (see Figure S11, Supporting Information), supporting the view of detrimental changes due to air exposure.…”

Modular Synthesis of γ-Valerolactone-Based Ionic Liquids and Their Application as Alternative Media for Copper-Catalyzed Ullmann-type Coupling Reactions

“…40 When Cs 2 CO 3 as a base was used in iPrOH, 65% isolated yield was obtained. By the replacement of toxic Cs 2 CO 3 (LD 50(rat, oral) = 1000 mg/kg) 41 with anhydrous sodium-acetate, no reaction was detected in iPrOH. Similarly, when GVL was used as a solvent no conversion was observed.…”

Tin Halide Perovskite Epitaxial Films on Gold Surfaces: Atomic Structure and Stability

“…The decrease of the Cs amount is higher than that of Br, therefore a formation of metallic Cs via a reducing reaction and subsequent evaporation may take place as well. [ 44 ] The observed decrease in Au intensity (see Figure S9 and Table S1, Supporting Information) is an additional demonstration of the formation of an oxide layer at the top surface, increasing the thickness of the adlayer and thus decreasing the intensity of gold recorded by XPS. We note, LEED measurements after air exposure do not show any crystalline structure anymore (see Figure S11, Supporting Information), supporting the view of detrimental changes due to air exposure.…”

Modular Synthesis of γ-Valerolactone-Based Ionic Liquids and Their Application as Alternative Media for Copper-Catalyzed Ullmann-type Coupling Reactions

“…40 When Cs 2 CO 3 as a base was used in iPrOH, 65% isolated yield was obtained. By the replacement of toxic Cs 2 CO 3 (LD 50(rat, oral) = 1000 mg/kg) 41 with anhydrous sodium-acetate, no reaction was detected in iPrOH. Similarly, when GVL was used as a solvent no conversion was observed.…”