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Lewis Acid Interactions with Ruthenium Formyl and Hydroxymethyl Complexes
Lewis Acid Interactions with Ruthenium Formyl and Hydroxymethyl Complexes
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202104806
- ISBN
- 9798291562055
- DDC
- 546
- 서명/저자
- Lewis Acid Interactions with Ruthenium Formyl and Hydroxymethyl Complexes
- 발행사항
- [Sl] : The University of North Carolina at Chapel Hill, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 582 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-02, Section: B.
- 주기사항
- Advisor: Dempsey, Jillian L.
- 학위논문주기
- Thesis (Ph.D.)--The University of North Carolina at Chapel Hill, 2025.
- 초록/해제
- 요약The global pursuit of efficient and sustainable energy sources has rekindled interest in the capacity of homogeneous, Fischer-Tropsch (FT) catalytic processes capable of reducing renewable feedstocks such as syngas to liquid fuels. While traditional, heterogeneous FT processes often require extreme conditions and with low product specificity, homogeneous FT processes would be molecularly tunable and mechanistically accessible. This work explores the role of Lewis acidic cations as additives in model FT homogeneous processes, with a focus on their capacity to stabilize and tune the reactivity of possible catalytic intermediates capable of CO reduction to methanol.Chapter 2 focuses on a model formyl complex, [Ru(bpy)2(CO)(CHO)]+ (bpy = 2,2'-bipyridine), involved in the reduction of CO to methanol using [Ru(bpy)2(CO)2]2+ and sacrificial H+/H- donors. NMR spectroscopic techniques revealed that monocationic, alkali cations such as Li+ and Na+ can adduct with [Ru(bpy)2(CO)(CHO)]+ intermediate via association to the nucleophilic formyl oxygen, leading to enhanced carbene character in the complex. The effects of this adduct association on the reactivity and stability of [Ru(bpy)2(CO)(CHO)]+ is demonstrated and explored.Chapter 3 continues the exploration of Lewis acid interactions with [Ru(bpy)2(CO)(CHO)]+, but with a stronger, dicationic [Mg(H2O)x]2+ species. Insights into adduct formation using NMR techniques involving variable temperature and titration studies reveal a 2:1 binding mechanism for the association of [Ru(bpy)2(CO)(CHO)]+ with Mg2+. The dicationic Lewis acids bridges two formyl units and imparts strong carbene character mimicking the multi-site behavior observed in heterogeneous FT processes.Chapter 4 explores the interactions of Lewis acids with reactive hydroxymethyl intermediates. The highly reduced model [Ru(bpy)2(CO)(CH2OH)]+ demonstrates similar 2:1 binding association equilibrium with Mg2+ as [Ru(bpy)2(CO)(CHO)]+. However, these adducts of [Ru(bpy)2(CO)(CH2OH)]+ with Mg2+ show clean generation of formaldehyde. This result highlights with the potential for CO reduction to formaldehyde as a potent C1 synthon and fuel precursor.
- 일반주제명
- Inorganic chemistry
- 일반주제명
- Molecular chemistry
- 일반주제명
- Chemistry
- 일반주제명
- Analytical chemistry
- 키워드
- Fischer-Tropsch
- 키워드
- Formyl
- 키워드
- Hydride transfer
- 키워드
- Hydroxymethyl
- 기타저자
- The University of North Carolina at Chapel Hill Chemistry
- 기본자료저록
- Dissertations Abstracts International. 87-02B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260202104806
■006m o d
■007cr#unu||||||||
■020 ▼a9798291562055
■035 ▼a(MiAaPQ)AAI32165610
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a546
■1001 ▼aSirlin, Jake Tyler.
■24510▼aLewis Acid Interactions with Ruthenium Formyl and Hydroxymethyl Complexes
■260 ▼a[Sl]▼bThe University of North Carolina at Chapel Hill▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a582 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-02, Section: B.
■500 ▼aAdvisor: Dempsey, Jillian L.
■5021 ▼aThesis (Ph.D.)--The University of North Carolina at Chapel Hill, 2025.
■520 ▼aThe global pursuit of efficient and sustainable energy sources has rekindled interest in the capacity of homogeneous, Fischer-Tropsch (FT) catalytic processes capable of reducing renewable feedstocks such as syngas to liquid fuels. While traditional, heterogeneous FT processes often require extreme conditions and with low product specificity, homogeneous FT processes would be molecularly tunable and mechanistically accessible. This work explores the role of Lewis acidic cations as additives in model FT homogeneous processes, with a focus on their capacity to stabilize and tune the reactivity of possible catalytic intermediates capable of CO reduction to methanol.Chapter 2 focuses on a model formyl complex, [Ru(bpy)2(CO)(CHO)]+ (bpy = 2,2'-bipyridine), involved in the reduction of CO to methanol using [Ru(bpy)2(CO)2]2+ and sacrificial H+/H- donors. NMR spectroscopic techniques revealed that monocationic, alkali cations such as Li+ and Na+ can adduct with [Ru(bpy)2(CO)(CHO)]+ intermediate via association to the nucleophilic formyl oxygen, leading to enhanced carbene character in the complex. The effects of this adduct association on the reactivity and stability of [Ru(bpy)2(CO)(CHO)]+ is demonstrated and explored.Chapter 3 continues the exploration of Lewis acid interactions with [Ru(bpy)2(CO)(CHO)]+, but with a stronger, dicationic [Mg(H2O)x]2+ species. Insights into adduct formation using NMR techniques involving variable temperature and titration studies reveal a 2:1 binding mechanism for the association of [Ru(bpy)2(CO)(CHO)]+ with Mg2+. The dicationic Lewis acids bridges two formyl units and imparts strong carbene character mimicking the multi-site behavior observed in heterogeneous FT processes.Chapter 4 explores the interactions of Lewis acids with reactive hydroxymethyl intermediates. The highly reduced model [Ru(bpy)2(CO)(CH2OH)]+ demonstrates similar 2:1 binding association equilibrium with Mg2+ as [Ru(bpy)2(CO)(CHO)]+. However, these adducts of [Ru(bpy)2(CO)(CH2OH)]+ with Mg2+ show clean generation of formaldehyde. This result highlights with the potential for CO reduction to formaldehyde as a potent C1 synthon and fuel precursor.
■590 ▼aSchool code: 0153.
■650 4▼aInorganic chemistry
■650 4▼aMolecular chemistry
■650 4▼aChemistry
■650 4▼aAnalytical chemistry
■653 ▼aFischer-Tropsch
■653 ▼aFormyl
■653 ▼aHydride transfer
■653 ▼aHydroxymethyl
■653 ▼aCatalytic intermediates
■690 ▼a0488
■690 ▼a0431
■690 ▼a0485
■690 ▼a0486
■71020▼aThe University of North Carolina at Chapel Hill▼bChemistry.
■7730 ▼tDissertations Abstracts International▼g87-02B.
■790 ▼a0153
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17358889▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


