Structural characterization and cytotoxic evaluation of Cu(II), Co(II) and Ni(II) complexes with herbicide 4-chloro-2-methylphenoxyacetic acid
作者:Aleksandra Drzewiecka-Antonik、Wiesława Ferenc、Anna Wolska、Marcin T. Klepka、Cristina A. Barboza、Beata Cristóvão、Dariusz Osypiuk、Jan Sarzyński、Bogdan Tarasiuk、Emilia Grosicka-Maciąg、Dagmara Kurpios-Piec、Marta Struga
DOI:10.1016/j.poly.2019.03.004
日期:2019.6
and [Ni(MCPA)2(H2O)4]·H2O complexes have octahedral molecular geometry with two MCPA anions acting as monodentate ligands. The X-ray crystal structure analysis performed for Cu(II) complex after its recrystallization from N,N-dimethylformamide solution showed the formation of dinuclear complex with solvent molecules included in the coordination sphere of Cu(II). MCPA herbicide and its Cu(II), Co(II) and
by magnetic measurements. The complexes crystallize in monoclinic system. The Mn(II) ion is surrounded by oxygen atoms (from carboxylate groups and water molecules) in the octahedral arrangement. Variable-temperature (1.8–300 K) magnetic susceptibility measurements showed that compounds obey the Curie-Weiss law and have the paramagnetic properties. Being heated up to 1173 K the complexes decompose
氯化锰 (II) 与 4-氯-2-甲基苯氧基乙酸 (MCPA)、2,4-二氯苯氧基乙酸 (2,4-D) 和 4-溴苯氧基乙酸 (4-Br) 的铵盐反应生成形成水合配合物的分子式为:Mn(MCPA) 2 ·2H 2 O、Mn(2,4-D) 2 ·2H 2 O 和Mn(4-Br) 2 ·3H 2O. 通过元素和热分析、光谱方法以及磁性测量来表征化合物。配合物以单斜晶系结晶。Mn(II) 离子被八面体排列的氧原子(来自羧酸根和水分子)包围。变温 (1.8–300 K) 磁化率测量表明化合物符合居里-魏斯定律并具有顺磁性。加热到 1173 K 时,配合物分三步分解 - 首先分解为无水化合物:Mn(MCPA) 2 /Mn(2,4-D) 2 /Mn(4-Br) 2到中间产物:MnO/Mn 2 OCl 2 /Mn 2 OBr 2至以下氧化物:Mn2 O 3 /Mn 3 O 4 /Mn 3 O 4。对Mn(II)与4-溴苯氧基乙酸在N