[논문]증발법으로 합성된 신규 가돌리늄 금속-유기골격체의 단결정 구조 분석 및 자성학적 특성 연구

송정화

doi:10.6111/jkcgct.2022.32.5.199

증발법으로 합성된 신규 가돌리늄 금속-유기골격체의 단결정 구조 분석 및 자성학적 특성 연구
Structure analysis, and magnetic study of a new Gd-metal-organic framework single crystal grown by the slow-evaporation method 원문보기

한국결정성장학회지 = Journal of the Korean crystal growth and crystal technology, v.32 no.5, 2022년, pp.199 - 204

송정화 (한라대학교 신소재화학공학과)

초록
AI-Helper

유연한 구조의 p-XBP4 리간드를 활용하여 새로운 3차원 구조의 Gd-MOF를 합성하고 단결정 회절 분석기를 활용하여 정확한 구조를 분석하였다. 중심 금속인 Gd는 6개의 p-XBP4와 1개의 물 분자에 의해 총 7배위 되어 있으며, W(CN)₈는 배위되지 않고 전하 균형을 맞추기 위해 구조체 내에 위치하고 있다. 중심 금속인 Gd는 배위된 p-XBP4에 의해 이웃한 Gd와 연결되어 3차원의 입체구조를 형성한다. 란탄 금속의 특성을 고려하여 직류 자화율 측정을 활용하여 자성 특성에 대한 연구를 진행하였다.

Abstract ▼ AI-Helper

A new three-dimensional Gd-MOF, [Gd(p-XBP4)4(H2O)]·W(CN)8; (1; p-XBP4 = N,N'-p-phenylenedimethylenbis (pyridin-4-one)) has been synthesized by slow-evaporation and its crystal structure was characterized by single-crystal X-ray diffraction (SCXRD) analysis. For each GdIII ion, there are seven coordination sites, which are occupied by six oxygen atoms of six p-XBP4 ligands and one oxygen atom from the water molecule. The [W(CN)8]3- anion exists for charge balance with cationic framework. The GdII ions are interconnected by the p-XBP4 ligand to form the three-dimensional structure. Considering the magnetic property of lanthanide ions, magnetic studies of Gd-MOF were investigated by direct-current (DC) magnetic susceptibilities measurements.

주제어

표/그림 (9)

그림 Scheme 1. [N,N'-p-phenylenedimethylenbis(pyridin-4-one)] (p-XBP4).
표 Table 1 Crystallographic details for complex 1. CCDC deposition number is 2209440.
그림 Fig. 1. Molecular structure of complex 1. Color codes: green = Gd, red = O, blue = N, gray = C, light blue =W. Symmetry codes: (a) -1 + x, y, z; ( b) 1 + x, y, z; ( c) 2 - x, 1 - y, 1 - z. Hydrogen atoms are omitted for clarity.
그림 Fig. 2. Extended 3D structure view of complex 1. Color codes: green = Gd, red = O, blue = N, gray= C. All Hydrogen atoms and [W(CN)₈]^3- molecules are omitted for clarity.
그림 Fig. 3. PXRD data of simulated pattern and as-prepared complex 1.
표 Table 2 Selected bond lengths (Å) for complex 1.
그림 Fig. 4. PXRD data of simulated pattern and as-prepared complex 1.
그림 Fig. 5. Magnetic susceptibility of complex 1 from 2 to 300 K.
그림 Fig. 6. Field dependence magnetization versus H/T for complex 1.

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