Reactions of 3,4-diethyl-2,5-dimethyl-1,2,5-thiadiborolene (I) with hydrazines lead to 1,2-diaza-3,6-diborin (IIa) and its methyl (IIb) and dimethyl (IIc) derivatives. Their constitution follows from spectroscopic data. The X-ray structure analysis of IIa proves the planar arrangement of the ring atoms with the distances NN 139.1, BN 138.7, BC 156.1 and CC 137.1 pm. The compound crystallizes in
3,4-
二乙基-2,5-二
甲基1,2,5-噻二
硼烯(I)与
肼的反应生成1,2-二
氮杂3,6-二
硼烷(IIa)及其
甲基(IIb)和二
甲基(IIc)衍
生物。它们的构成来自光谱数据。IIa的X射线结构分析证明了环原子的平面排列,其距离为NN139.1,BN138.7,BC156.1和CC137.1 pm。该化合物结晶,空间群晶Pnma用一个917(1),b 1680(3),Ç 668(1)时和在单元电池四个分子。