[PPh4]2[R2SiO2M2O2(μ-O2)2(O2)2}] in 75–80% isolated yields (R2 = (CH3)2, (i-C4H9)2 or (CH3)(CH2Cl); R′=CH3R′=CH3 or C2H5; M = Mo(VI) or W(VI)). These results are unequivocally established by a combination of elemental analysis, IR, 1H and 13C NMR spectroscopy and complete X-ray crystal structure analysis of the three molybdenum complexes.There is good evidence that the tungsten analogues are isostructural compounds
MoO 3 [或“ WO 3 ·H 2 O”],H 2 O 2(30 wt%)
水溶液与R 2 Si(OR ')2 R2Si(OR')2在碱性
过氧化氢-
乙醇混合物中的反应通过用PPH治疗4 +
氯-得到先前未知的dioxotetraperoxodi(
钼或
钨)杂,的相应的盐[PPH 4 ] 2 [R 2的SiO 2 M 2 ö 2(μ-O 2)2(O 2)2 }]的分离产率为75–80%(R 2 =(CH 3)2,(i -C 4 H 9)2或(CH 3)(CH 2 Cl); R ' = CH 3 R'=
CH3或C 2 H 5; M = Mo(VI)或W(VI))。结合元素分析,IR,1 H和13明确确定了这些结果C NMR光谱和三个
钼complexes.There的完整X射线晶体结构分析是良好的证据表明,
钨类似物是同构compounds.The O-O键是在1.464-1.483的范围内,典型的过氧配合物η