钼(II)羰基配合物[Mo(CO)2(PR 3)('bu S 4')]的热硫醚-S-脱烷基化反应(R = Ph,Me;'bu S 4'2− = 1,2 -双(2-巯基-3,5-二叔丁基苯硫基)乙烷(2-))生成钼(IV)羰基配合物[Mo(CO)(PR 3)('bu S 2')2]( 'bu S 2'2- = 3,5-二叔丁基-1,2-苯二硫醚(2-))。[Mo(CO)(PPh 3)('bu S 2')2](1)的X射线结构分析显示,通过S 4 CP供体对钼中心的伪三角棱柱配位。NMR光谱表明1和[Mo(CO)(PMe 3)('bu S 2')2](2)在溶液中具有反八面体结构。[Mo(CO)3('bu S 4')]在室温下以高真空度进行热脱烷基化反应,生成[Mo(CO)2('bu S 2')2](4),
Übergangsmetallkomplexe mit Schwefelliganden LXXI. Synthese der Molybdän(II)-Komplexe [Mo(CO)2(L)(‘buS4’)] mit dem sterisch anspruchsvollen vierzähnigen Thioether-Thiolatliganden ‘buS4’2− = 1,2-Bis(2-mercapto-3,5-di-t-butylphenylthio)ethan(2−) (L = CO, PMe3, PPh3)
摘要:
In order to obtain well soluble molybdenum sulfur carbonyl complexes [Mo(CO)2(PR3)('buS4')] (R = Me, Ph; 'buS4'2- = 1,2-bis(2-mercapto-3,5-di-t-butylphenylthio)ethane(2-)) was synthesized by reaction of 'buS4'-Li2 with [Mo(CO)2(PMe3)3(Cl)2] and [Mo(CO)3(PPh3)2(Cl)2], respectively. Reaction of [Mo(CO)4(Cl)2] with 'buS4'-H2 yields [Mo(CO)3('buS4')], which is also formed slowly in solutions of [Mo(CO)2(PPh3)('buS4')] at room temperature. Although the [Mo(CO)2(L)('buS4')] complexes (L = CO, PMe3, PPh3) have overall C1 symmetry, according to the NMR spectra, the [Mo('buS4')] cores exhibit in solution undisturbed C2 symmetry and, consequently, the [Mo(CO)2(L)] fragments have to fluctuate.