Converting C–H bonds into valuable compounds is a challenging goal in synthetic chemistry, yet it is both economically and environmentally beneficial. Developing high-efficiency catalysts for the oxidation of saturated C–H bonds is of great significance. Herein, a new cobalt-containing metal-organic complex, [Co₂(L)_0.5(MTC)(µ₃-OH)(H₂O)₂]·2H₂O (1, L = (E)-4,4′-(ethene-1,2-diyl)bis(N-(pyridin-3-yl)benzamide), H₃MTC = benzene-1,2,4-tricarboxylic acid), was successfully prepared with Co(NO₃)₂, ligand L and H₃MTC through one-step hydrothermal synthesis. Complex 1 was found to be a highly effective heterogeneous catalyst for accelerating the oxidation reaction of alkylbenzenes to ketone products. The conversion of diphenylmethane to benzophenone over complex 1 was 95.6%, which was comparable to the highest values of reported transition metal-based catalysts. A possible catalytic reaction mechanism was proposed.

将 C-H 键转化为有价值的化合物是合成化学中的一个具有挑战性的目标，但它在经济和环境上都是有利的。开发高效饱和C-H键氧化催化剂具有重要意义。本文提出了一种新的含钴金属有机配合物[Co ₂ (L) _0.5 (MTC)(μ ₃ -OH)(H ₂ O) ₂ ]·2H ₂ O ( 1 , L  = (E)-4,用Co(NO ₃成功制备了4′-(乙烯-1,2-二基)双(N-(吡啶-3-基)苯甲酰胺), H ₃ MTC = 苯-1,2,4-三羧酸) ) ₂ , 配体 L 和 H ₃MTC通过一步水热合成。配合物1被发现是一种高效的多相催化剂，可加速烷基苯氧化成酮产物的反应。配合物1上二苯甲烷转化为二苯甲酮的转化率为 95.6%，与报道的过渡金属基催化剂的最高值相当。提出了一种可能的催化反应机理。