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已知的笼式(closo)、巢式(nido)、网式(arachno)及叶式(hypho)硼烷一般以BH为生长单元,按通式B_pH_(p+q+c)~c(c为电荷)计,其q值分别为2,4,6,8.随此q值递增的顺序,硼烷的结构类型也逐渐敞开.最近,我们在自制装置上以脉冲激光作用于NaBH_4而产生了一类单电荷硼氢负离子[B_kH_(k+3)(B_3H_5)_n]~-(K=1,2,3代表三个不同的系列,n=0,1,2,…),其q值可超过10,应当采取更为敞开的结构.此外,其质谱峰的有规律的排列表明其生长单元为B_3H_5,
Known closo, nido, arachno and hypho boranes are generally represented by BH as a unit of growth, according to the general formula B_pH_ (p + q + c) ~c (c For the charge), the q values were 2, 4, 6, 8. With the increasing order of q value, the structure type of borane was also gradually opened.Recently, we produced pulsed laser on NaBH_4 in homemade devices A class of single charge borohydride anion [B_kH_ (k + 3) (B_3H_5) _n] ~ - (K = 1,2,3 represents three different series, n = 0,1,2, ...) Values may exceed 10 and a more open structure should be taken.In addition, the regular arrangement of their mass peaks indicates that their growth units are B_3H_5,