Metal Tetrahydroborates and Tetrahydroborato Metalates. 30 [1] Solvates of Alcoholato-, Phenolato-, and Bis(trimethylsilyl)amido-Magnesium Tetrahydroborates XMgBH4(Ln)Metall Tetrahydroborate und Tetrahydroborato Metallate, 30 [1]. Solvate der Alkoholato-, Phenolato- und Bis(trimethylsilyl)amino-magnesium-tetrahydroborate XMgBH4(Ln)
作者:Mathias Bremer、Gerald Linti、Heinrich N�th、Martina Thomann-Albach、Gerhardt E. W. J. Wagner
DOI:10.1002/zaac.200400420
日期:2005.3
alcoholato and phenolato magnesium tetrahydroborates have been prepared as solvates (RO)Mg(BH4)(OEt2) by 1:1 reactions of ROH (R = Me, Et, iPr, tBu, CH2CMe3, Et2(tBu)C, Ph3C, Ph, 2, 4, 6-Me3C6H2, (2, 6-iPr)2C6H3, (2, 6-tBu2)C6H3, 2-(iPrO)C6H4, 2, 6-(MeO)2C6H3) with diethyl ether solutions of EtMg(BH4). Displacement of diethyl ether by thf, dme, and diglyme produced various solvates (RO)Mg(BH4)(L)n (L = thf,
通过 ROH (R = Me, Et, iPr, tBu, CH2CMe3, Et2(tBu)C, Ph3C , Ph, 2, 4, 6-Me3C6H2, (2, 6-iPr)2C6H3, (2, 6-tBu2)C6H3, 2-(iPrO)C6H4, 2, 6-(MeO)2C6H3) 与乙醚溶液EtMg(BH4)。thf、dme 和二甘醇二甲醚对乙醚的置换产生了各种溶剂化物 (RO)Mg(BH4)(L)n(L = thf、二甲醚、二甘醇二甲醚,n = 1、2、3)。这些化合物中的大多数是中心对称的二聚体,具有中心的 Mg2O2 四元环。无论组成如何,11B NMR 信号都是 1:4:6:4:1 五重峰,表明 BH4 基团的氢原子在磁性上是等效的。八种化合物的分子结构 [(RO)Mg(BH4)(OEt2)]2 (R = iPr, tBu, tBuCH2, Et3C, Me3Si), [(PhO)Mg(BH4)(thf)2]2