See all entries for this property (2 total)
Crystal system: monoclinic
| a: | 14.0739 (±0.0015) Å |
| b: | 9.0379 (±0.001) Å |
| c: | 8.4723 (±0.001) Å |
| α: | 90° |
| β: | 99.246 (±0.005)° |
| γ: | 90° |
Starting materials: PbI2, HI(47%), propanolamine (HOC3H6NH2)
Product: Yellow crystals
Description: PbI2 (0.610 mmol; 0.281 g) was dissolved in 1.5 mL HI solution. Then HOC3H6NH2 (0.945 mmol; 0.071 g) was added and was dissolved by refluxing for 2 hours at 90 degrees Celsius. It is assumed that there was a substitution reaction that took place where the amine had an alcohol group substituted with an iodide atom. The solution was then cooled at 2 degrees Celsius per hour to room temperature, causing yellow crystals to precipitate.
Method: Single-crystal X-ray diffraction
Description: A Bruker SMART 1K CCD area detector diffractometer using Mo Kalpha radiation was used to measure SCXRD at 173 K. Omega-scans of width 0.3 degrees were used. The SAINT+ version 6.02 program was used for data reduction and the XPREP program was used for absorption corrections. SHELXS-97 was used to directly solve the structure. SHELXL-97 was used for refinement of the structure.
Crystal system: monoclinic
| Exciton binding energy, meV |
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See all entries for this property (2 total)
Starting materials: PbO, HI (57% (w/w) in water), H3PO2 (50% (w/w) in water)
Product: yellow plate-like crystals
Description: 5 mmol PbO was dissolved in a solution of 40 mL HI and 5 mL of H3PO2 by sonicating in an ultrasonic bath sonicator for 10 min. The solution is cooled to ∼278 K using an ice−water bath. In this solution, 10 mmol H2N-(CH2)3-OH is added dropwise. The solution is stirred using a magnetic stirrer and heated for 30 min in an oil bath maintained at 383 K. After 30 min, the heating and stirring are stopped, and the solution is kept undisturbed. After 12 hours, the precipitated crystals are separated by filtration with diethyl ether and dried in air.
Method: Diffuse reflectance spectroscopy
Description: The spectrum was recorded using a Shimadzu UV3600 plus UV−vis−NIR spectrophotometer with BaSO4 powder as a reference of 100% reflectance. The reflectance signal is converted to absorbance using the Kubelka−Munk function.