| Budget Amount *help |
¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Outline of Final Research Achievements |
Three diaryldiazomethanes having halogen groups, which are inert to a triplet carbene, as steric protectors were synthesized, and the corresponding triplet diarylcarbenes were generated by photolysis of them and were characterized. Diphenylcarbene having four iodine groups at the ortho positions is observed up to 200 K in 2MTHF and has 18.4 minutes of half-life in degassed benzene at room temperature. Diphenylcarbene having two iodine groups and a trifluoromethyl group at the ortho positions is observed up to 100 K in 2MHF and has 40 ms of half-life in the benzene solution. (Triazol-5-yl)(phenyl)carbene having two 2,6-difluorophenyl groups at the 1,4-positions of the triazole ring is stable to 220 K in 2MTHF and is estimated to be a persistent triplet carbene as same as the tetraiodo-diphenylcarbene.
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