在Renner-Teller效应作用下有两个虚振动频率的CCSH(2∏态)能分裂为另两个态2A’和2A”。由于它们的弯曲振动不一样而且是排斥态,再考虑到2A”态的能量比线性CCSH低,但2A’态却比线性CCSH高,因此我们认为CCSH自由基是一非典型性的Renner-Teller自由基 Under the Renner-Teller effect, two CCSH (2Π states) with virtual vibration frequencies can be split into the other two states 2A ’and 2A. Because of their different bending vibrations and their repulsive states, 2A " The state energy is lower than the linear CCSH, but the 2A ’state is higher than the linear CCSH, so we think that the CCSH radical is an atypical Renner-Teller radical