CAJ | 학술논문

在水热条件下合成了一个新颖的零维稀土和烟酸(3-吡啶酸)的化合物Gd_2(In)_6(H_2O)_4(1)(In=3-吡啶酸).经单晶X-ray衍射分析可知,该配合物是2个钆离子通过4个娴酸上的双齿桥联的羧基连成的零维舣核簇单元结构.在结构测定的基础上分别开展了磁和热微扰下的二维相关红外光谱的研究,结果表明:在热微扰下,羧基的伸缩振动的变化比较显著,这可能是和羧基与中心离子的配位能力很强,造成自身的化学键的松弛有关.同时,由于和Gd离子配位的O原子的羧基的配位方式的不同,使得在热微扰下Gd-O键的伸缩振动的响应的敏感程度不同.在磁微扰下,羧基的伸缩振动的变化比较也显著,这可能是因为羧基带有一个单位的负电倚;磁微扰下的二维紫外漫反射相关光谱中,吡啶环的π-π电子跃进和配体到金属的LMCT荷移跃迁对磁微扰的变化比较敏感.同时还研究了该配合物的荧光和热重的性质.
재수열조건하합성료일개신영적령유희토화연산(3-필정산)적화합물Gd_2(In)_6(H_2O)_4(1)(In=3-필정산).경단정X-ray연사분석가지,해배합물시2개구리자통과4개한산상적쌍치교련적최기련성적령유의핵족단원결구.재결구측정적기출상분별개전료자화열미우하적이유상관홍외광보적연구,결과표명:재열미우하,최기적신축진동적변화비교현저,저가능시화최기여중심리자적배위능력흔강,조성자신적화학건적송이유관.동시,유우화Gd리자배위적O원자적최기적배위방식적불동,사득재열미우하Gd-O건적신축진동적향응적민감정도불동.재자미우하,최기적신축진동적변화비교야현저,저가능시인위최기대유일개단위적부전의;자미우하적이유자외만반사상관광보중,필정배적π-π전자약진화배체도금속적LMCT하이약천대자미우적변화비교민감.동시환연구료해배합물적형광화열중적성질.
A novel zero-dimension coordination polymer Gd_2(In)_6 (H_2O)_4 (1)(In=3-bipyridine acid) was synthesized under hy-drothermal condition. By the analysis of single-crystal X-ray diffraction, the structure of the compound is that two Gd atoms connect with zero-dimension bi- nucleus cluster by the bridged carboxylate of four Ins. Based on the determination of the structure, the 2D correlation FT1R spectra with the perturbations of magnetism and thermal was applied. Under the perturbations of temperature, the vibration of the carboxylate has the very strong response, which is related with the strong coordinating ability of the carboxylate. At the same time, due to the different coordinated mode of the carboxylate with Gd, the response of Gd-O bonds is different under the temperature perturbations. Under the perturbations of magnetism, the vibration of the carboxylate has also the very strong response, which may be related with one-negetive charge of the carboxylate. The 2D correlation ultraviolet spectral with the perturbation of magnetism were investigated.Compared with one-dimension ultraviolet spectral, the transition of the electrons in bi-pyridine ring and the charge transition from ligand to the metal have the very strong response. At the same time, the fluorescence spectral and TGA were studied.