alkyl radical

Preexponential factor A in Arrhenius expression quantitatively was related to the topological steric effect index ( TSEI ) of alkyl radical R_i .

用烷基Ri的拓扑立体效应指数（TSEI）定量相关阿仑尼乌斯公式中的指数前因子A。

( iv ) the alkyl radical formed upon H-Ab from alkane by metal oxo can be quickly rebounded to the nearby oxygen , greatly prohibiting the unselective radical-chain reactions .

（ⅳ）H在端氧脱除后，产生的烷基自由基能迅速地同近邻的氧原子复合（“rebound”），从而很大程度上避免了非选择性的自由基链式反应。

Study on alkyl radical structure of heavy alkylbenzene with ESI-MS method

ESI-MS法对重烷基苯烃基结构的研究

At present , the research indicated that , introducing the silicon alkyl radical in the organotin may be possible to reduce the toxicity of the organotin .

研究表明，在有机锡中引入含硅烃基可降低有机锡的毒性。

The formation of alkyl free radical , carbonyl after irradiation is measured .

还测定了添加HALS的PE在辐照后烷基自由基、羰基的生成。

The EPR experiment confirmed that alkyl and alkoxyl radical was generated in reaction mixture with intensive signals .

后通过电子自旋共振实验进一步证实在反应过程中产生烷基自由基和烷氧自由基混合物，且信号强烈，添加DTT和BHT有一定的自由基清除的效果。

The full scan MS 4 spectra gave characteristic fragment ions formed by loss of the alkyl group on the alkoxy substituent on the phenyl ring as alkyl radical .

其（-）ESI-MS4质谱均产生脱去苯环上烷氧基的烷基自由基碎片。