A series of bis- and tris(oxobenzimidazolyl)hydroborato compounds, namely, [BoRBenz]Na and [ToRBenz]-Na (R = Me, But, Ad), which feature uncommon sterically demanding LX [O2] and L2X [O3] donor ligands, have been obtained via the reactions of NaBH4 with 1-R-1,3-dihydro-2H-benzimidazol-2-ones. Evidence that the alkyl substituents are suitably located to have a significant impact on the coordination
一系列的双和三(氧杂
苯并咪唑基)氢
硼酸盐化合物,即[Bo RBenz ] Na和[To RBenz ] -Na(R = Me,Bu t,Ad),具有不常见的空间需求性LX [ O 2 ]和L通过NaBH 4与1-R-1,3-二氢-2 H-
苯并咪唑-2-酮的反应获得了2 X [ O 3 ]供体
配体。证据表明烷基取代基被适当地定位以对协调环境显著影响由观察提供的甲基衍
生物[为了MeBenz ]的Na(κ 3 -diglyme)展品κ 3
二甘醇二
甲醚的-coordination,而吨丁基和
金刚烷基衍
生物,[给卜吨奔驰]的Na(κ 2 -diglyme)和[为了AdBenz ]的Na(κ 2 -diglyme),表现出κ 2 -coordination。[Bo RBenz ]和[To RBenz ]
配体还允许分离离散的单核th化合物[Bo RBenz ] Tl和[To RBenz ] Tl,对于它