SbCl3 > SOCl2 > HgCl2 > HCl > (CH3)3 NH . HCl, and correlates well with thermodynamic properties of the halogenating agents. Reactivity towards chlorination in the amine boranes decreases in the order (CH3)3NBH3>(CH3)3NBH2Cl>(CH3)3NBHCl2, and correlates well with B stretching frequencies and nmr shifts. Trimethylamine dichloroborane was synthesized and characterized for the first time. The weaker halogenating
三甲胺硼烷可以在温和的条件下用各种卤化物和卤氧化物进行
氯化。反应的顺序的SbCl降低5〜SO 2
氯2 >的SbCl 3 >的SOCl 2 >的HgCl 2 >
盐酸>(CH 3)3 NH。HCl,并与卤化剂的热力学性质紧密相关。胺
硼烷中
氯化反应的反应性依次降低(CH 3)3 NBH 3 >(CH 3)3 NBH 2 Cl>(CH 3)3 NBHCl 2,并与B拉伸频率和nmr位移很好地相关。首次合成了
三甲胺二
氯硼烷并对其进行了表征。较弱的卤化剂似乎通过极性
氢化物转移机理发生反应,而最强的卤化剂则可能通过自由基链机理进行卤化。