화학공학소재연구정보센터
Journal of the Korean Industrial and Engineering Chemistry, Vol.13, No.5, 422-427, August, 2002
β-디케토네이트-은 착제에 이미다졸-2-이리덴이 배위된 첨가 생성물의 합성 및 특성
Synthesis and Characterization of Imidazol-2-ylidene Adducts Silver β-Diketonate Complexes
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초록
은 착체 화합물들은 silver β-diketonates 착체와 imidazol-2-ylidenes 배위자와의 반응으로부터 합성되었다. 합성된 착체는 1H/13C-NMR, FT-IR, UV, 원소분석을 통해 특성을 파악하였다. 특히 착체 1은 X-ray 결정구조해석을 통해 분자구조를 알 수가 있었다. 결정 데이터: C22H23AgN2O2: Mr = 455.29, Triclinic, space group P-1, a = 7.9671 (11) Å, α = 106.800(15) deg, b = 11.625(2) Å, beta = 93.298(12) deg, c = 12.0479(18) Å, gamma = 105.815(12) deg, V = 1016.4(3) Å(3), Z, = 2, Dc = 1.488 g/cm(3), R1 = 0.1941, wR2 = 0.2438 for 5614 reflections. 얻어진 착체 1의 구조는 단분자이지만 은 원자를 중심으로 두 배위자가 교대로 적중되어 있고, 은 원자와 은 원자간의 거리가 3.000 Å 이다. 그리고 착체의 imidazol-2-ylidene 중 carbenenic 탄소원자의 화학이동은 배위되지 않는 imidazol-2-ylidene 보다 33.3 ~ 38.3 ppm 정도 고자기장쪽으로 이동됨을 알 수가 있었다.
The compounds (β-diketonates)Ag(imidazol-2-ylidenes) were prepared by the reaction of silver β-diketonates with imidazol-2-ylidenes as ligands. These species were characterized by 1H/13C-NMR, FT-IR, UV, elemental analysis. The complex 1 was structurally characterized by X-ray crystallography. Crystal data: C22H23AgN2O2: Mr = 455.29, Triclinic, space group P-1, a = 7.9671(11) Å, α = 106.800 (15) deg, b = 11.625(2) Å, beta = 93.298(12) deg, c = 12.0479(18) Å, gamma = 105.815(12) deg, V = 1016.4(3) Å(3), Z, = 2, Dc = 1.488 g/cm(3), R1 = 0.1941, wR2 = 0.2438 for 5614 reflections. The crystal packing structure in the complex 1 shows the stacked arrangement. The distance between two silver atoms is 3.000 Å. In the 13C-NMR, the peaks of the carbenenic carbon atoms in the complexes are shifted upfield by ca. 33.3 ~ 38.3 ppm.
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