Metal Tetrahydroborates and Tetrahydroborato Metallates, 30 [1]. Alkoxo-Substituted Alkali Metal Tetrahydroborates: Studies in Solution and Structures in the Solid State
作者:Jörg Knizek、Heinrich Nöth、Markus Warchhold
DOI:10.1515/znb-2006-0906
日期:2006.9.1
BH3 ·THF in THF solution. It is unstable to disproportionation. Compound (C6F5O)3B·THF was isolated and its crystal structure determined. Reaction of LiBH4 with F5C6OH in hexane generated a solid that proved to be Li[H2B(OC6F5)2]. It is unstable in THF. On the other hand, 2,2’-dihydroxydiphenyl in the presence of secondary amines reacts to give Li[C12H8O2B(NR2)2] (3 - 5). Li[B(O2C12H8)2], 2, is formed
摘要 MBH4 (M = Li, Na, K) 与 tBuOH、Ph3COH、PhOH、F5C6OH 和 2,4-tBu2C6H3OH 在 THF 中以 1:1 的比例进行反应,然后进行 11B NMR 光谱分析。未检测到 M[H2B(OR)2] 物质,但检测到少量 M[H3BOR] 和大量 M[HB(OR)3]。在 LiBH4 与 2,4-tBu2C6H3OH 的反应中,也生成了相当比例的 (RO)2BH。全氟苯酚硼烷(F5C6O)2BH·THF由苯酚和BH3·THF在THF溶液中制备。对歧化不稳定。分离出化合物(C6F5O)3B·THF并确定其晶体结构。LiBH4 与 F5C6OH 在己烷中的反应生成固体,证明是 Li[H2B(OC6F5)2]。在 THF 中不稳定。另一方面,2,2'-二羟基二苯基在仲胺存在下反应生成 Li[C12H8O2B(NR2)2] (3 - 5)。Li[B(O2C12H8)2]