Three new bivalent nickel hydrazone complexes have been synthesised from the reactions of [NiCl2(PPh3)2] with H2L L = dianion of the hydrazones derived from the condensation of o-hydroxynaphthaldehyde with furoic acid hydrazide (H2L1) (1)/thiophene-2-acid hydrazide (H2L2) (2)/isonicotinic acid hydrazide (H2L3) (3)} and formulated as [Ni(L1)(PPh3)] (4), [Ni(L2)(PPh3)] (5) and [Ni(L3)(PPh3)] (6). Structural characterization of these compounds 4–6 were accomplished by using various physico-chemical techniques. Single crystal X-ray diffraction data of complexes 4 and 5 proved their distorted square planar geometry. In order to ascertain the potential of the above synthesised compounds towards biomolecular interactions, additional experiments involving interaction with calf thymus DNA (CT DNA) and bovine serum albumin (BSA) were carried out. All the ligands and corresponding nickel(II) chelates have been screened for their scavenging effect towards O2−, OH and NO radicals. The efficiency of complexes 4–6 to arrest the growth of HeLa, HepG-2 and A431 tumour cell lines has been studied along with the cell viability test against the non-cancerous NIH 3T3 cells under in vitro conditions.
合成了三种新的二价
镍腙复合物,反应物为[NiC
L2(PPh3)2]与H2L反应,其中L为由邻羟基
萘醛与
呋喃酸腙(H2L1)/
噻吩-2-酸腙(H2
L2)/
异烟酸腙(H2L3)缩合而得的二亚基阴离子。最终形成的复合物为[Ni(L1)(PPh3)] (4)、[Ni(
L2)(PPh3)] (5)和[Ni(L3)(PPh3)] (6)。通过多种物理
化学技术对这三种化合物4-6进行了结构表征。复合物4和5的单晶X射线衍射数据证明了它们的扭曲平面正方形几何结构。为了确定上述合成化合物在
生物分子相互作用中的潜力,进行了与小牛胸腺DNA(CT DNA)和
牛血清白蛋白(
BSA)的相互作用研究。所有
配体及相应的
镍(II)螯合物均经过对O2−、OH和NO自由基的清除效应进行筛选。复合物4-6对HeLa、HepG-2和A431肿瘤
细胞系的生长抑制能力,以及对非癌症NIH 3T3细胞在体外条件下的细胞活力测试也进行了研究。