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Synthesis and Characterization of Zinc(II) Tetraaza Macrocyclic Complexes with Aquo and Nitrate Ligands

대한화학회지 2018년 62권 1호 p.14 ~ 18
 ( Lim In-Taek ) - Kongju National University Department of Chemistry Education

 ( Kim Chong-Hyeak ) - Korea Research Institute of Chemical Technology Center for Chemical Analysis
 ( Choi Yoon-Mi ) - Korea Research Institute of Chemical Technology Center for Chemical Analysis
 ( Park Jong-Hoon ) - Kongju National University Department of Chemistry Education
 ( Choi Ki-Young ) - Kongju National University Department of Chemistry Education

Abstract


The complexes [Zn(L)(H2O)2]?2NO2 (1) and [Zn(L)(NO3)2] (2) (L = 3,14-dimethyl-2,6,13,17-tetraazatricyclo [14,4,01.18,07.12]docosane) have been synthesized and structurally characterized. The compound 1 crystallizes in the monoclinic system P21/c with a = 8.74650(10), b = 18.6880(3), c = 7.96680(10) A, β = 109.1920(10)°, V = 1229.84(3) A3, Z = 2. The compound 2 crystallizes in the monoclinic system P1 with a = 8.1292(5), b = 8.9244(5), c = 9.1398(5) A, α = 68.035(2), β = 70.109(2), γ = 75.649(3)°, V = 572.70(6) A3, Z = 1. The crystal structures of the compounds 1 and 2 show a distorted octahedral coordination geometry around the zinc(II) ion, with four secondary amines and two oxygen atoms of the two water and two nitrate ligands at the axial position. The TGA behaviors of the complexes are significantly affected by the nature of the tetraaza macrocycle and the axial ligands.

키워드

Zinc(II) complexes; Tetraaza macrocycle; Aquo ligand; Nitrite ligand; Nitrate ligand
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