CAJ | 학술논문

通过水热合成方法,合成了一种新型的硅钨酸盐担载的有机无机复合物[Zn(2,2'-bipy)3]1.5[SiW12O40Zn(2,2'-bipy)2(OH)]·0.25H2O,并对其进行了元素分析、红外光谱、热分析及X-射线单晶衍射等表征.结构分析表明,标题化合物结构单元中含有1个 [SiW12O40Zn(2,2'-bipy)2(OH)]3-杂多阴离子,1.5个[Zn(2,2'-bipy)3]2+ 阳离子和0.25个结晶水分子.在[SiW12O40Zn(2,2'-bipy)2(OH)]3-杂多阴离子中,Keggin阴离子[SiW12O40]4-通过一个端氧原子与[Zn(2,2'-bipy)2(OH)]+共价相连.TG-DTA 热分析曲线表明多阴离子的骨架在618 ℃分解.
통과수열합성방법,합성료일충신형적규오산염담재적유궤무궤복합물[Zn(2,2'-bipy)3]1.5[SiW12O40Zn(2,2'-bipy)2(OH)]·0.25H2O,병대기진행료원소분석、홍외광보、열분석급X-사선단정연사등표정.결구분석표명,표제화합물결구단원중함유1개 [SiW12O40Zn(2,2'-bipy)2(OH)]3-잡다음리자,1.5개[Zn(2,2'-bipy)3]2+ 양리자화0.25개결정수분자.재[SiW12O40Zn(2,2'-bipy)2(OH)]3-잡다음리자중,Keggin음리자[SiW12O40]4-통과일개단양원자여[Zn(2,2'-bipy)2(OH)]+공개상련.TG-DTA 열분석곡선표명다음리자적골가재618 ℃분해.
A new Keggin-type silicotungstate anion-supported organic-inorganic hybrid transition metal complex [Zn(2,2'-bipy)3]1.5[SiW12O40Zn(2,2'-bipy)2(OH)]·0.25H2O (2,2'-bipy = 2,2'-bipyridine) has been synthesized by hydrothermal method and characterized by elemental analysis, IR spectrum, TG-DTA and single crystal X-ray diffraction. The analysis indicates that each structure unit of the title compound consists of a [SiW12O40Zn(2,2'-bipy)2(OH)]3- heteropolyanion, one and a half [Zn(2,2'-bipy)3]2+ cations, and a quarter of crystal water molecules. The [Zn(2,2'-bipy)2(OH)]+ unit is covalently bonded to one Keggin polyoxoanion [SiW12O40]4- through a terminal oxygen atom in the [SiW12O40Zn(2,2'-bipy)2(OH)]3- heteropolyanion. The TG-DTA analysis exhibits that the anion framework collapses at 618 ℃.