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唑類配體的剛性和柔性對(duì)配位聚合物結(jié)構(gòu)和性質(zhì)的影響

發(fā)布時(shí)間:2018-06-03 15:08

  本文選題:配位聚合物 + 1; 參考:《西北大學(xué)》2017年碩士論文


【摘要】:近二十年來(lái),配位聚合物一直保持著長(zhǎng)盛不衰的發(fā)展勢(shì)頭,不僅結(jié)構(gòu)越來(lái)越變化多樣,并且在光、電、磁、熱、醫(yī)藥學(xué)、生物等許多領(lǐng)域展示著不可估量的實(shí)際應(yīng)用價(jià)值。如何設(shè)計(jì)得到所希冀的擁有獨(dú)特結(jié)構(gòu)和卓越性能的目標(biāo)配合物,是近年來(lái)科學(xué)家們始終致力于攻克的難題。本論文選取典型的柔性的雙咪唑配體1,6-二(2-甲基咪唑)己烷(bimh)和典型的剛性的三吡唑配體1,3,5-三吡唑苯(tpb)作為主配體,構(gòu)筑了 15例結(jié)構(gòu)不同的配位聚合物,來(lái)探索配體的剛性和柔性對(duì)配合物結(jié)構(gòu)和性質(zhì)的影響。論文一共分為四個(gè)部分:第一部分為緒論,首先簡(jiǎn)單的介紹了配位化學(xué)、配位聚合物的概念,配合物的合成方法以及影響配位聚合物結(jié)構(gòu)的因素。然后,介紹了近幾年配位聚合物在熱動(dòng)力學(xué)從理論到實(shí)踐方面的應(yīng)用。其次,對(duì)柔性咪唑類配合物和剛性吡唑類配合物的實(shí)驗(yàn)研究背景和進(jìn)展作了簡(jiǎn)要概述,對(duì)本論文的選題依據(jù)及意義做了簡(jiǎn)單的介紹。第二部分選取柔性的1,6-二(2-甲基咪唑)己烷(bimh)和幾種羧酸,過(guò)渡金屬作為中心金屬,使用溶劑熱合成法,構(gòu)筑了 8個(gè)功能配合物:[Zn(bimh)0.5(5-MIPA)]_n(1),[Cu(bimh)0.5(1,4-H_2ndc)]_n(2),{[Co5(bimh)_2(H_2bdc-Br2)4]·3H_2O}n(3),{[Co2(bimh)0.5(5-TBIPA)_2]}n(4),{[Zn_2(bimh)1.5(5-TBIPA)_2]}n(5),{[Ni(bimh)(5-NIPA)]·EtOH}n(6),{[Zn_3(bimh)0.5(5-NIPA)_2]·2H_2O }n(7),[Cd(bimh)(5-NIPA)]_n(8)。對(duì)這 8 例配合物中的bimh配體的空間構(gòu)象進(jìn)行了分析討論。對(duì)它們進(jìn)行了元素分析(EA)、粉末衍射(PXRD)、紅外光譜(IR)等組成和結(jié)構(gòu)表征以及熒光性質(zhì)和TG/DTG-DSC熱動(dòng)力學(xué)表征和討論,分析了配合物的熱穩(wěn)定性。第三部分選取剛性的1,3,5-三吡唑苯和芳香竣酸作為混合配體,過(guò)渡金屬為中心金屬,通過(guò)水熱合成法,構(gòu)筑了 7個(gè)配位聚合物:[Ni(tpb)_2(2,2'-TDA)_2]_n(9),[Cd_2(tpb)_2(H_2IPA)_2]_n(10),[Zn_2(tpb)(H_2TPA)]_n(11),[Co(tpb)(2,2'-dpa)]_n(12),[Ni(tpb)_2(H_2tpa-OH_2)]_n(13),{[Zn(tpb)(5-OIPA)]H_20}n(14),[Cu(tpb)(H_2bdc-C12)]_n(15)。與論文第二部分相同,對(duì)這7例配合物的結(jié)構(gòu)和性質(zhì)進(jìn)行了測(cè)試和分析。第四部分為論文的總結(jié)和討論。
[Abstract]:In the past 20 years, coordination polymers have maintained the momentum of development. Not only the structure is more and more diverse, but also in many fields such as light, electricity, magnetism, heat, medicine, biology and so on, it shows inestimable practical application value. How to design the desired target complexes with unique structure and excellent performance has been a difficult problem for scientists in recent years. In this paper, 15 cases of coordination polymers with different structures were constructed by using typical flexible bis (imidazole) ligands (1: 6-dimethylimidazole) hexane (bimh) and rigid tripyrazole ligands (1-3-5-tripyrazolyl benzene tpb) as main ligands. To explore the effects of ligand rigidity and flexibility on the structure and properties of the complexes. The thesis is divided into four parts: the first part is introduction. Firstly, the coordination chemistry, the concept of coordination polymer, the synthesis method of coordination compound and the factors affecting the structure of coordination polymer are introduced briefly. Then, the applications of coordination polymers in thermodynamics from theory to practice in recent years are introduced. Secondly, the experimental background and progress of flexible imidazole complexes and rigid pyrazole complexes are briefly summarized, and the basis and significance of this thesis are briefly introduced. 絎簩閮ㄥ垎閫夊彇鏌旀,

本文編號(hào):1973220

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