作者:Bongki Shin、Kyle D. Sutherlin、Takehiro Ohta、Takashi Ogura、Edward I. Solomon、Jaeheung Cho
DOI:10.1021/acs.inorgchem.6b02288
日期:2016.12.5
a mononuclear cobalt(III)–peroxo complex bearing a tetradentate macrocyclic ligand, [CoIII(Me3-TPADP)(O2)]+ (Me3-TPADP = 3,6,9-trimethyl-3,6,9-triaza-1(2,6)-pyridinacyclodecaphane), was prepared by reacting [CoII(Me3-TPADP)(CH3CN)2]2+ with H2O2 in the presence of triethylamine. Upon protonation, the cobalt(III)–peroxo intermediate was converted into a cobalt(III)–hydroperoxo complex, [CoIII(Me3-TPADP)(O2H)(CH3CN)]2+
单核金属-氢过氧化物加合物的反应性因其多样的生物和催化过程而吸引了许多领域的研究人员。在这项研究中,带有四齿大环配体[Co III(Me 3 -TPADP)(O 2)] +(Me 3 -TPADP = 3,6,9-三甲基-3,通过使[Co II(Me 3 -TPADP)(CH 3 CN)2 ] 2+与H 2 O 2反应制备6,9-三氮杂-1(2,6)-吡啶基环癸烷在三乙胺存在下。质子化后,钴(III)-过氧中间体转变为钴(III)-氢过氧配合物[Co III(Me 3 -TPADP)(O 2 H)(CH 3 CN)] 2+。单核钴(III)-过氧和-氢过氧中间体通过多种物理化学方法进行了表征。电喷雾电离质谱的结果清楚地表明了中间体的转变:对应于钴(III)-过氧化合物的m / z 339.2峰消失,同时对应于钴(III)的m / z 190.7峰也随之增长。–氢过氧配合物(与CH结合3 C