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Replacement of the Common Chromium Source CrCl3(thf)3 with Well-Defined [CrCl2(μ-Cl)(thf)2]2 for Synthesis of Ethylene Tetramerization Catalyst.
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.advisor | 이분열 | - |
| dc.contributor.author | 이동근 | - |
| dc.date.accessioned | 2022-11-29T02:32:52Z | - |
| dc.date.available | 2022-11-29T02:32:52Z | - |
| dc.date.issued | 2021-08 | - |
| dc.identifier.other | 31057 | - |
| dc.identifier.uri | https://dspace.ajou.ac.kr/handle/2018.oak/20423 | - |
| dc.description | 학위논문(석사)--아주대학교 일반대학원 :분자과학기술학과,2021. 8 | - |
| dc.description.tableofcontents | 1. Introduction 1 2. Results and Discussion 3 3. Materials and Methods 12 3.1 General remarks 12 3.2 [CrCl2(μ-Cl)(thf)2]2 13 3.3 [(CH3CN)4CrCl2]+[B(C6F5)4]– 13 3.4 [iPrN{P(C6H4-p-Si(nBu)3)2}2CrCl2]+[B(C6F5)4]– 14 3.5 [{Et(Cl)Al(N(iPr)2)2}Cr(μ-Cl)]2 14 3.6 X-ray Crystallography 14 4. Conclusions 15 5. Reference 16 | - |
| dc.language.iso | eng | - |
| dc.publisher | The Graduate School, Ajou University | - |
| dc.rights | 아주대학교 논문은 저작권에 의해 보호받습니다. | - |
| dc.title | Replacement of the Common Chromium Source CrCl3(thf)3 with Well-Defined [CrCl2(μ-Cl)(thf)2]2 for Synthesis of Ethylene Tetramerization Catalyst. | - |
| dc.type | Thesis | - |
| dc.contributor.affiliation | 아주대학교 일반대학원 | - |
| dc.contributor.department | 일반대학원 분자과학기술학과 | - |
| dc.date.awarded | 2021. 8 | - |
| dc.description.degree | Master | - |
| dc.identifier.localId | 1227971 | - |
| dc.identifier.uci | I804:41038-000000031057 | - |
| dc.identifier.url | https://dcoll.ajou.ac.kr/dcollection/common/orgView/000000031057 | - |
| dc.subject.keyword | CrCl3(thf)3 | - |
| dc.subject.keyword | [CrCl2(μ-Cl)(thf)2]2 | - |
| dc.subject.keyword | chromium compound | - |
| dc.subject.keyword | ethylene tetramerization catalyst. | - |
| dc.description.alternativeAbstract | CrCl3(thf)3 is a common starting material in the synthesis of organometallic and coordination compounds of Cr. Deposited as an irregular solid with no possibility of recrystallization, it is not a purity guaranteed chemical, causing problems in some cases. In this work, we disclose a well-defined form of the THF adduct of CrCl3 ([CrCl2(μ-Cl)(thf)2]2), a crystalline solid, that enables structure determination by X-ray crystallography. The EA data and XRD pattern of the bulk agreed with the revealed structure. Moreover, its preparation procedure is facile: evacuation of CrCl3·6H2O at 100 °C, treatment with 6 equivalents of Me3SiCl in a minimal amount of THF, and crystallization from CH2Cl2. The ethylene tetramerization catalyst [iPrN{P(C6H4-p-Si(nBu)3)2}2CrCl2]+[B(C6F5)4]– prepared using well-defined [CrCl2(μ-Cl)(thf)2]2 as a starting material exhibited a reliably high activity (6600 kg/g-Cr/h; 1-octene selectivity at 40 °C, 75%), while that of the one prepared using the impure CrCl3(thf)3 was inconsistent and relatively low (~3000 kg/g-Cr/h). By using well-defined [CrCl2(μ-Cl)(thf)2]2 as a Cr source, single crystals of [(CH3CN)4CrCl2]+[B(C6F5)4]– and [{Et(Cl)Al(N(iPr)2)2}Cr(μ-Cl)]2 were obtained, allowing structure determination by X-ray crystallography, which had been unsuccessful when the previously known CrCl3(thf)3 was used as the Cr source. | - |
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- Graduate School of Ajou University > Department of Molecular Science and Technology > 3. Theses(Master)
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