The copper(II) complexes [Cu(L)NO₃] (1–9) of newer N₃O ligands (L1 -L9) have been synthesized and characterized. The molecular structure of 1, 4, and 7 exhibited nearly a perfect square pyramidal geometry (τ, 0.04–0.11). The Cu-O_Phenolate bonds (~ 1.91 Å) are shorter than the CuN bonds (~ 2.06 Å) due to the stronger coordination of anionic phenolate oxygen. The Cu(II)/Cu(I) redox potentials of 1–9 appeared around −0.102 to −0.428 V versus Ag/Ag⁺ in water. The electronic spectra of the complexes showed the d-d transitions around 643–735 nm and axial EPR parameter (g_||, 2.243–2.270; A_||, 164–179 × 10⁻⁴ cm⁻¹) that corresponds to square pyramidal geometry. The bonding parameters α², 0.760–0.825; β², 0.761–0.994; γ², 0.504–0.856 and K_||, 0.698–0.954 and K_⊥, 0.383–0.820 calculated from EPR spectra and energies of d-d transitions. The complexes catalyzed the conversion of substrate 2-aminophenol into 2-aminophenoxazine-3-one using molecular oxygen in the water and exhibited the yields of 41–61%. The formation of the product is accomplished by the appearance of a new absorption band at 430 nm and the rates of formation were calculated as 6.98–15.65 × 10⁻³ s⁻¹ in water. The reaction follows Michaelis-Menten enzymatic reaction kinetics with turnover numbers (k_cat) 9.11 × 10⁵ h⁻¹ for 1 and 4.66 × 10⁵ h⁻¹ for 9 in water. The spectral, redox and kinetic studies were performed in water to mimic the enzymatic oxidation reaction conditions.

新型 N ₃ O 配体 ( L1 -L9 )的铜 (II) 配合物 [Cu( L )NO ₃ ] ( 1–9 ) 已被合成和表征。的分子结构1，图4，和7几乎表现出完美的方锥体几何形状（τ，0.04-0.11）。由于阴离子酚盐氧的配位更强，Cu-O_酚盐键 (~ 1.91 Å) 比 Cu N 键 (~ 2.06 Å)短。1 – 9的 Cu(II)/Cu(I) 氧化还原电位出现在 -0.102 至 -0.428 V 与 Ag/Ag ⁺在水里。复合物的电子光谱显示在 643-735 nm 附近的 dd 跃迁和轴向 EPR 参数（g _||，2.243-2.270；A _||， 164-179 × 10 ^-4  cm ^-1）对应于方形金字塔几何形状。键合参数α ²，0.760-0.825；β ² , 0.761–0.994; γ ² , 0.504–0.856 和K _|| , 0.698–0.954 和K _⊥, 0.383–0.820 从 EPR 光谱和 dd 跃迁的能量计算。该配合物利用水中的分子氧催化底物 2-氨基苯酚转化为 2-氨基吩恶嗪-3-one，产率为 41-61%。产物的形成是通过在 430 nm 处出现新的吸收带来完成的，并且在水中的形成速率计算为 6.98–15.65 × 10 ^-3  s ^-1。该反应用如下的转换数（米氏酶促反应动力学ķ_猫）9.11×10 ⁵  ħ ^-1为1和4.66×10 ⁵  ħ ^-1为9在水里。在水中进行光谱、氧化还原和动力学研究以模拟酶促氧化反应条件。