is treated with Mo(CO)5(Thf) (Thf=tetrahydrofuran) (6), since mono- and bimetallic complexes of structural type Mo(CO)5(pyz) (7), [Mo(CO)5]2(μ-pyz) (8) and Mo(CO)5Cl (9) and further chloride-containing molybdenum species are formed. These results show that 3a acts, both as chloride (complexes 5 and 9) and pyz (complexes 7 and 8) transfer reagent, whereby redox processes play a decisive role. The reaction
中性单核(VI)二氧杂配合物顺式-[OSO 2 Cl 2 L 2 ] [L = pyz(3a),L = cpy(3b); 通过在
甲醇/
丙酮中以1:2摩尔比用pyz(2a)或cpy(2b)处理OSO 4(1),可得到pyz =
吡嗪,cpy = 4-
氰基吡啶](顺式是指Cl官能团)在HCl存在下的混合物。在该反应中,HCl充当过渡
金属的
氯化物源。当3a与2当量反应时。[Pd(dppp)] [OTf)2(4)(OTf = OSO 2 CF如图3所示,在沉淀OSO 2时,产生dppp =
二苯基膦基丙烷)同双
金属[Pd(dppp)(μ-Cl)] 2(OTf)2(5)和pyz(2a)。当用Mo(CO)5(Thf)(Thf =
四氢呋喃)(6)处理3a时,观察到相似的反应行为,因为结构类型为Mo(CO)5(pyz)的单
金属和双
金属配合物(7),形成[Mo(CO)5 ] 2(μ-pyz)(8)和Mo(CO)5