Synthesis and Toxicity Test of M/Zn(II) Complexes [M = Mn(II), Co(II)] with Pyridine-2,6-dicarboxylic Acid Ligand

摘要

Heterodinuclear complexes of Co(H)/Zn(II) and Mn(II)/Zn(II) with pyridine-2,6-dicarboxylic acid as a ligand (H2dipic, dipicolinate) have been synthesized yielding of reddish purple colour of Co(II)/Zn(II) dipicolinic crystal and reddish colour of Mn(II)/Zn(II) dipicolinic crystal. The determination of elements composition (%) of complex compound using atomic absorption spectroscopy and CHN elemental analyzer (C = 28.96; H = 3.47; N = 5.42; Co = 10.15 Mn = 9.47 and Zn = 11.26) showed that the molecular formula of Co(II) complex compound is [Zn(H2O)5Co(dipic)2]·2H2O, while that of Mn(II) complex compounds is fZn(H2O)5Mn(dipic)2]·2H2O. The IR spectrum of the Co(II) and Mn(II) complexes showed a typical vibration absorption in the wavenumber of 3082 cm~(-1) indicating of Co(II)/Zn(II) dipicolinic and Mn(II)/Zn(II) dipicolinic have been formed. A brine shrimp lethality test (BSLT), used to determine the toxicity of complexes showed that LC_(50) of Co(II) complex and Mn(II) complexes were 283.71 and 354.94 mg/L, respectively.