Abstract |
Isonitrosoacetylacetone 및 여러가지 디아민으로 부터 유도된 리간드와의 니켈(Ⅱ) 및 팔라듐(Ⅱ) 착물들, 즉, Ni(IAA)2-en, Ni(IAA)2-pn, Ni(IAA)2-tn, Pd(IAA)2-en, PdCl(IAA)-pn, 그리고 Pd(IAA)2-tn을 합성하였다. 여기서 (IAA)2-en, (IAA)2-pn, (IAA)2-tn, 그리고 (IAA)-pn 은 각각 N,N'-enthylenbis(isonitrosoacetylacetone imine), N,N'-propylenebis(isonitrosoacetylacetone imine), N,N'-trimethylenebis(isonitrosoacetylacetone imine), 그리고 N-(2-aminopropyl)isonitrosoacetylacetone imine 을 표시한다. 합성된 이들 니켈(Ⅱ) 및 팔라듐(Ⅱ) 착물들의 원소분석, 적외선 스펙트럼, 핵자기공명스펙트럼, 그리고 전자스펙트럼등을 측정한 결과, Ni(IAA)2-tn 및 Pd(IAA)2-en에서 리간드의 한 isonitroso 기는 질소원자를 통하여 금속이온에 배위되어 5각형 고리를 이루고, 다른 isonitroso기는 산소원자를 통하여 금속이온에 배위되어 6각형 고리를 이룬다. 그리고, Ni(IAA)2-en, Ni(IAA)2-pn, 그리고 Pd(IAA)2-tn에서 리간드의 두개의 isonitroso기는 모두 질소원자를 통하여 금속이온에 배위되어 5각형 고리를 이룬다. 한편, PdCl(IAA)-pn 은 팔라듐과 한분자의 isonitrosoacetylacetone 및 propylenediamine의 반응으로 생성된다. Some nickel(Ⅱ) and palladium(Ⅱ) complexes of the ambidentate ligands derived from condensation of the isonitrosoacetylacetone and various diamines, Ni(IAA)2-en, Ni(IAA)2-pn, Ni(IAA)2-tn, Pd(IAA)2-en, PdCl(IAA)-pn, and Pd(IAA)2-tn, where (IAA)2-en, (IAA)2-tn, and (IAA)-pn represent N,N'-enthylenbis(isonitrosoacetylacetone imine), N,N'-propylenebis(isonitrosoacetylacetone imine), N,N'-trimethylenebis(isonitrosoacetylacetone imine) and N-(2-aminopropyl)isonitrosoacetylacetone imine, respectively, have been prepared. The nickel(Ⅱ) and palladium(Ⅱ) complexes were characterized on the bases of the elemental analysis, IR, NMR, and electronic spectra. It is suggested that a isonitroso group of (IAA)2-en or (IAA)2-tn coordinates to the metal ion through the nitrogen atom to form five-membered ring, while the other isonitroso group of (IAA)2-en or (IAA)2-tn coordinates to the metal ion through the oxygen atom to form six membered ring in square-planar complexes of Ni(IAA)2-tn and Pd(IAA)2-en. And two isonitroso groups of (IAA)2-en, (IAA)2-pn, or (IAA)2-tn coordinate to the metal ion through the nitrogen atom to form five-membered rings in square-planar complexes of Ni(IAA)2-en, Ni(IAA)2-pn, and Pd(IAA)2-tn. On the other hand, square-planar PdCl(IAA)-pn is formed by the reaction of propylenediamine with a isonitrosoacetylacetone in the presence of palladium(Ⅱ)ion. |
