Crystal system: orthorhombic
| a: | 8.3343 (±0.0003) Å |
| b: | 8.2225 (±0.0004) Å |
| c: | 27.6171 (±0.0015) Å |
| α: | 90° |
| β: | 90° |
| γ: | 90° |
Starting materials: n-butylamine, PbBr2, HBr
Product: plate-like colorless crystals
Description: 0.34 mmol PbBr2, 0.7 mmol n-butylamine are mixed in 3 mL of 9M HBr. The mixture is then heated to 100 ˚C for 2 h to dissolve the solid, and then slowly cooled down to room temperature at −2 °C·hr−1.
Method: Single crystal X-ray diffraction
Description: Frames were collected using Bruker D8 Venture diffractometer equipped with a Photon 100 CMOS detector employing Mo Kα radiation (λ=0.71073 Å).
Crystal system: orthorhombic
| a: | 8.2229 (±0.0005) Å |
| b: | 8.11 (±0.0005) Å |
| c: | 27.3179 (±0.0016) Å |
| α: | 90° |
| β: | 90° |
| γ: | 90° |
Starting materials: BABr (synthesized), PbBr2, HBr
Product: Colorless single crystals
Description: (BA)2PbBr4 crystals were synthesized by mixing BABr, and PbBr2 into a saturated HBr solution at a molar ratio of 2:1. Complete dissolution was achieved by heating to boiling with constant stirring for ~30 minutes. Upon slowly cooling, at a rate of 1°C/min to room temperature, the crystals precipitated. The crystals were removed by suction filtration and were dried in a vacuum.
Method: Single-crystal X-ray diffraction
Description: A synchrotron radiation source ( λ = 0.7749 Å) in a nitrogen atmosphere was used for the SCXRD data. The crystals were mounted on a Bruker diffractometer using a Kapton tip. Nitrogen cryogen with a temperature controller precisely adjusted the temperature during measurement. APEX 3 software was used for data reduction and SADABS software was used for multiscan absorption correction. Structure calculations were performed using the SHELXTL program.