Výsledky vyhledávání - "Paula J. O'Leary"

Stereoelectronic effects on arene rotation: the structure and fluxionality of [1,4-C6H4(SiMe3)2]Cr(CO)2PPh3 and [1,3,5-C6H3tBu3)Cr(CO)2PPh3

Autor: Claire J. Beddows, Hugo E. Gottlieb, Desmond Cunningham, Patrick McArdle, Paul C. Yates, Paula J. O'Leary, James A. S. Howell

Publikováno v: Journal of Organometallic Chemistry. 527:21-27

Barriers to metal-arene ring rotation in [1,4-C6H4(SiMe3)2)Cr(CO)2PPh3 and (1,3,5-C6H3tBu2)Cr(CO)2PPh3 are lowered relative to a previously reported barrier of 32 J mol−1 for (1,4-C6H4tBu2)Cr(CO)2PPh3. Reasons for the decreased barriers are discuss

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9b54ba016daa51e480bba04edfa677e8
https://doi.org/10.1016/s0022-328x(96)06537-0

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Synthesis and Reactivity of Cyclic and Acyclic (1-(acyloxy)pentadienyl)Fe(CO)2LX and (1-alkoxypentadienyl)Fe(CO)2LX Salts (L = CO, PPh3)

Autor: Paula J. O'Leary, Michelle Hastings, Philip W. Howard, Patrick McArdle and, James A. S. Howell, Desmond Cunningham, and David A. Owen, and Andrew G. Bell, Andrew J. Whitehead, G. Richard Stephenson

Publikováno v: Organometallics. 15:4247-4257

A variety of cyclic and acyclic [(pentadienyl)Fe(CO)2L]X complexes (L = CO, PPh3) containing terminal acyloxy or alkoxy substituents have been prepared. In situ NMR studies indicate that for the acyclic series where L = CO, stability is limited by so

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b26314a6641919778c7f855afca6b601
https://doi.org/10.1021/om960336a

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Acyclic O- and N-substituted pentadienyl cations: Structural characterisation, cyclisation and computational results

Autor: Paul C. Yates, Daphna Hezroni-Langerman, James A. S. Howell, Hugo E. Gottlieb, Paula J. O'Leary, Zeev Goldschmidt

Publikováno v: Tetrahedron. 51:7231-7246

A number of 1- and 3-hydroxy and 1-amino substituted acyclic pentadienyl cations have been characterised by NMR spectroscopy in situ at low temperature. Some of the 3-hydroxy cations undergo cyclisation to give 1-hydroxycyclopentenyl cations which on

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c42f27a2584eeea42b9eacc2e5301d0b
https://doi.org/10.1016/0040-4020(95)00369-j

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ChemInform Abstract: Acyclic O- and N-Substituted Pentadienyl Cations: Structural Characterization, Cyclization and Computational Results

Autor: Dafna Hezroni-Langerman, Hugo E. Gottlieb, Paula J. O'Leary, Zeev Goldschmidt, James A. S. Howell, Paul C. Yates

Publikováno v: ChemInform. 26

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dc20ddabfb1d8bc1f49b428e9272e543
https://doi.org/10.1002/chin.199541039

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