Book Review: Calorimetry. Fundamentals and Practice. By W. Hemminger and G. Höhne

✍ Scribed by Theodor Ackermann

• Publisher: John Wiley and Sons
• Year: 1986
• Tongue: English
• Weight: 268 KB
• Volume: 25
• Category: Article
• ISSN: 0044-8249
• DOI: 10.1002/anie.198604822

✦ Synopsis

12 K). Photolysis of 29 at 12 K gave a carbene, different from phenylcarbene (Table 1) and characterized by a low D value. The ESR signal intensity did not follow the Curie law exactly, and, when the warmed sample was cooled again, the signals failed to return to their original intensities. One intriguing possibility is that 30 has a triplet ground state and, on warming, is partly converted into the lower-energy"O1 allene 31. Repeated warming and cooling should finally remove triplet 30 from the Cyclohepta[b]naphthalen-8-ylidene 32, a ground-state was similarly generated and gave D and E values very close to those of 30 (Table 1).