Synthesis, structures and stabilities of thioanisole-functionalised phosphido-borane complexes of the alkali metals
作者:Keith Izod、James M. Watson、William Clegg、Ross W. Harrington
DOI:10.1039/c1dt11368b
日期:——
alkali metal complexes [[(Me3Si)2CH}P(BH3)(C6H4-2-SMe)]ML]n [ML = Li(THF), n = 2 (10); ML = Na(tmeda), n = ∞ (11); ML = K(pmdeta), n = 2 (12)] as yellow/orange crystalline solids. X-ray crystallography reveals that the phosphido-borane ligands bind the metal centres through their sulfur and phosphorus atoms and through the hydrogen atoms of the BH3 group in each case, leading to dimeric or polymeric
用BH 3 ·SMe 2处理仲膦(Me 3 Si)2 CH} PH(C 6 H 4 -2-SMe)得到相应的膦-硼烷(Me 3 Si)2 CH} PH(BH 3))(C 6 H 4 -2-SMe)(9)为无色固体。用n -BuLi,PhCH 2 Na或PhCH 2 K进行9脱质子反应,得到相应的碱金属配合物[[Me 3 Si)2 CH} P(BH 3)(C 6 H4 -2-SMe)] ML] n [ML = Li(THF), n = 2( 10); ML = Na(tmeda), n =∞( 11); ML = K(pmdeta), n = 2( 12)],为黄色/橙色结晶固体。X射线晶体学表明,磷硼烷-硼烷配体在每种情况下通过其硫和磷原子以及通过BH 3基团的氢原子结合金属中心,从而导致二聚体或聚合物结构。化合物10-12对热和环境光均稳定;但是,在甲苯溶液中在10存在下加热时,