Abstract
[X=ortho (L1), meta(L2) 및 para(L3)]리간드를 갖는 주석(II) 화합물들을 합성하고, 그 특성을 원소분석, 적외선 분광광도법, 자외선/가시광선 분광광도법 및 열분석법을 이용하여 확인하였다. 자외선 분광광도법을 통하여, 주어진 ONNO 주게 리간드들의 이민(imine) 및 카보닐기의 배위 모드가 C2v 대칭성을 갖는 것으로 나타났다. 또한 열분석 결과, Sn(L3) 화합물이 가장 높은 활성화 에너지를 가지는 반면, Sn(L2) 화합물이 가장 낮은 활성화 에너지를 가짐을 알 수 있었다. Complexes of Sn(II) with L1 = acac-o-phdnH2 [N,N'-o-phenylene bis(acetylacetoneimine)], L2 = acac-m-phdnH2 [N,N'-m-phenylene bis(acetylacetoneimine)] and L3 = acac-p-phdnH2 [N,N'-p-phenylene bis(acetylacetoneimine)] have been prepared and characterized by elemental analyses, vibrational, electronic spectra and thermal studies (TGA and DTA). Vibrational spectra indicated the coordination mode of imine and carbonyl oxygen for ligands giving (ONNO) that belong to C2V point group symmetry. The [Sn(L3)] complex has a maximum activation energy and [Sn(L2)] complex has a minimum activation energy.
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