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Isolating Free Carbenes, their Mixed Dimers and Organic Radicals
Published on: April 19, 2019
Isolation and characterization of carbene derivatives of La@C82(Cs)
Takeshi Akasaka1, Takayoshi Kono, Yoichiro Matsunaga
1Center for Tsukuba Advanced Research Alliance, University of Tsukuba, Ibaraki 305-8577, Japan. akasaka@tara.tsukuba.ac.jp
Abstract:
The photochemical reaction of La@C82(Cs) with 2-adamantane-2,3-[3H]-diazirine (1) affords the adduct 2 of La@C82(Cs) with adamantylidene (Ad:) in a high selectivity. The two isomers of La@C82(Cs)(Ad), 2a and 2b, are isolated by HPLC and characterized by electron spin resonance, mass, and UV-vis-near-infrared spectroscopies. The electronic properties of 2a and 2b are very similar to that of the pristine La@C82(Cs), suggesting that 2a and 2b retain the essential electronic and structural character of La@C82(Cs).
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