Zienkiewicz M, Jabłońska-Wawrzycka A, Szlachetko J, Kayser Y, Stadnicka K, Sawka-Dobrowolska W, Jezierska J, Barszcz B, Sá J
Institute of Chemistry, Jan Kochanowski University in Kielce, 15G Swiętokrzyska Str., 25-406 Kielce, Poland.
Dalton Trans. 2014 Jun 21;43(23):8599-608. doi: 10.1039/c3dt53288g.
The two novel manganese(II) complexes with 2-hydroxymethylpyridine (2-CH2OHpy) {[Mn2(μ-Cl)2(2-CH2OHpy)4]Cl2·2H2O (1)} and 2-hydroxyethylpyridine (2-(CH2)2OHpy) {[Mn(2-(CH2)2OHpy)2(NCS)2] (2)} were synthesized and characterized by means of X-ray diffraction, IR, EPR, HF EPR spectroscopy, magnetic and TG/DTG data. The complexes show catalase-like activity in neutral aqueous solution since they were able to disproportionate H2O2 to harmless H2O and O2. Both complexes act as true catalysts since they reverted to their original form after depleting all the H2O2, as suggested by the operando resonant inelastic X-ray spectroscopy (RIXS) measurements.
合成了两种分别与2-羟甲基吡啶（2-CH2OHpy）{[Mn2(μ-Cl)2(2-CH2OHpy)4]Cl2·2H2O (1)}和2-羟乙基吡啶（2-(CH2)2OHpy）{[Mn(2-(CH2)2OHpy)2(NCS)2] (2)}形成的新型锰（II）配合物，并通过X射线衍射、红外光谱、电子顺磁共振、高频电子顺磁共振光谱、磁性和热重/微商热重数据对其进行了表征。这些配合物在中性水溶液中表现出类过氧化氢酶活性，因为它们能够将H2O2歧化为无害的H2O和O2。正如操作共振非弹性X射线光谱（RIXS）测量所表明的那样，这两种配合物都作为真正的催化剂，因为在耗尽所有H2O2后它们会恢复到原始形式。
