Brotsman Victor A, Ignat'eva Daria V, Troyanov Sergey I
Department of Chemistry, Moscow State University, 119991, Moscow, Leninskie gory, Russia.
Chem Asian J. 2017 Sep 19;12(18):2379-2382. doi: 10.1002/asia.201701011. Epub 2017 Aug 29.
Cage transformations in fullerenes are rare phenomena which are still not fully understood. We report the first skeletal transformation of an Isolated-Pentagon-Rule (IPR) isomer of C fullerene upon high-temperature chlorination which proceeds by six-step Stone-Wales rearrangements affording non-IPR, non-classical (NC) C (NC2)Cl with two cage heptagons, six pairs of fused pentagons, and an unprecedented loop-like chlorination pattern. The following loss of a C unit results in C (NC3)Cl containing three cage heptagons.
富勒烯中的笼状转变是罕见现象，目前仍未被完全理解。我们报道了首例C富勒烯的孤立五边形规则（IPR）异构体在高温氯化时发生的骨架转变，该转变通过六步斯通-威尔士重排进行，生成了具有两个笼状七边形、六对稠合五边形以及前所未有的环状氯化模式的非IPR、非经典（NC）C（NC2）Cl。随后失去一个C单元会生成含有三个笼状七边形的C（NC3）Cl。
