2-Amino-1,3,2-benzodioxaboroles, (o-C6H4O2 > B·NR′R″)n(R′= H = R″; R′= H and R″= Me, Et, Pri, But, or Ph; and R′= R″= Me or Pri), have been prepared. Formation of dimers or oligomers, in the solid state or in solution but not in the gas phase, depends on R′ and R″. Monomers and oligomers in this and related systems are differentiated by (i) molecular weight, (ii) infrared spectral characteristics,
2-
氨基-1,3,2-苯并二
恶唑硼烷,(o -C 6 H 4 O 2 > B·NR'R '' )n(R'= H = R''; R'= H且R''= Me,Et ,
镨我,卜吨,或pH;和R'= R“= Me或
镨我),已经制备。固态或在溶液中但不在气相中的二聚体或低聚物的形成取决于R'和R''。该体系和相关体系中的单体和低聚物的区别在于(i)分子量,(ii)红外光谱特性和(iii)相对
水解反应性。两个相关的2-
氨基-1,3,2-苯并二氮杂
硼环[[ o -C 6 H 4(NH)2 > B·NR'R“]已获得n个。对于这些以及对于2-
肼基-1,3,2-苯并二
恶唑硼酸酯而言,关于分子聚集的明确决定是不可能的。首先建立2Me 2
NBCl 2 →(Me 2
NBCl 2) 2系统的标准(ii)和(iii),并进一步利用(iii)来确定
正己烷中稀溶液的二聚反应动力学。在25°时,由二阶速率表达式控制。