Components:
(1) Phenoxazine,
C12H8NO; [135-67-1]
NIST WebBook
(2) Phenoxanthiin,
C12H8OS; [262-20-4]
NIST WebBook
Original Measurements
Cullinane, N. M.; Rees, W. T.; Trans. Faraday Soc. 1940, 36, 506-514.
Variables:
Ambient temperature: Temperature
Prepared by:
Method/Apparatus/Procedure:
Mixtures were placed in small capillary tubes. Temperature was slowly varied with ample time given for equilibration. Transition temperatures determined by visual observations. Reported temperatures verified by repetitive measurements.
Source and Purity of Materials:
- Synthesized by authors, and was purified by recrystallization from alcohol and sublimation.
- Synthesized by authors, and was purified by sublimation and recrystallized from alcohol.
Estimated Errors:
Ambient temperature: T/K: ±precision 0.2. (compiler). x1: ±0.002 (compiler).
Experimental Values:
| T (K) | x1 | x2 |
|---|---|---|
| 328.9 | 0.0 | 1.0 |
| 328.5 | 2.6 x 10-2 | 9.74 x 10-1 |
| 327.2 | 6.7 x 10-2 | 9.33 x 10-1 |
| 324.4 | 1.02 x 10-1 | 8.98 x 10-1 |
| 338.8 | 1.66 x 10-1 | 8.34 x 10-1 |
| 349.8 | 2.29 x 10-1 | 7.71 x 10-1 |
| 388.4 | 4.92 x 10-1 | 5.08 x 10-1 |
| 415.9 | 7.89 x 10-1 | 2.11 x 10-1 |
| 427.0 | 9.43 x 10-1 | 5.7 x 10-2 |
| 429.9 | 1.0 | 0.0 |
