Výsledky vyhledávání - "Neil A. Popham"

Synthesis of heterobinuclear metallocenes containing bridging ansa-bis-η-cyclopentadienyl ligands †

Autor: Neil H. Popham, Malcolm L. H. Green

Publikováno v: Journal of the Chemical Society, Dalton Transactions. :1049-1060

Binuclear metallocene derivatives have been prepared, exemplified by [Cl2(η-C5H5)Zr{µ-(η-C5H4)CMe2(η-C9H6)}Rh(CO)2], [Cl2(η-C5H5)Zr{µ-(η-C5H4)CMe2(η-C9H6)}Rh(PPh3)2], [Cl2(η-C5H5)Zr{µ-(η-C5H4)CMe2(η-C9H6)}Mn(CO)3], [Cl2(η-C5H5)Zr{µ-(η-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a073a7bb4a2ab522ac36b9c582cb3dd5
https://doi.org/10.1039/a809944h

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New metallocene compounds of zirconium and hafnium showing unusual ansa-ligand coordination: X-ray crystal structures of [{(CH2)5C(η5-C5H4)(η2-C9H6)}Zr(η5-C5H5)Cl] and [{Me2C(η5-C5H4)(η3-C13H8)}Zr(η5-C5H5)Cl]

Autor: Philip Mountford, Alexander N. Chernega, Malcolm L. H. Green, Neil A. Popham, Gary M. Diamond

Publikováno v: J. Chem. Soc., Chem. Commun.. :103-105

The new ansa-bridged compounds [{Me2C(η5-C5H4)(η2-C9H6)}M(η5-C5H5)Cl], [{(CH2)5C(η5-C5H4)(η2-C9H6)}M(η5-C5H5)Cl](M = Zr, Hf) and [{[Me2C(η5-C5H4)(η3-C13H8)}Zr(η5-C5H5)Cl] show unusual modes of coordination of the indenyl or fluorenyl groups.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dbe63fa6d54f00d03345096db6923e71
https://doi.org/10.1039/c39940000103

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NUCLEAR-MAGNETIC-RESONANCE STUDIES ON PARTIALLY DEUTERIATED TRANSITION-METAL METHYL-DERIVATIVES

Autor: Malcolm L. H. Green, Andrew K. Hughes, Luet-Lok Wong, Neil A. Popham, Adam H. H. Stephens

Publikováno v: JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS. (21)

Nuclear magnetic resonance studies on [W(η-C5Me4Et)(CH2D)4][PF6] show a strong temperature dependence of the isotope shift [δ(CH3)–δ(CH2D)] indicating the presence of a monoagostic methyl group. The magnitude and sign of the geminal coupling con

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::80672a8485396d1ab3506b18bfedb547
http://ora.ox.ac.uk/objects/uuid:0edfceb8-a1c7-4c86-bfc2-11efc5501055

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Synthesis of homo- and hetero-bimetallic complexes incorporating the [(η5-C5H4)CMe2(η5-C9H6)] ligand

Autor: Alexander N. Chernega, Neil A. Popham, Gary M. Diamond, Malcolm L. H. Green

Publikováno v: J. Chem. Soc., Chem. Commun.. :727-728

The new bimetallic complexes[(η5-C5H5)MCl2{(η5-C5H4)CMe2(η5-C9H6)}M*Cl2(η5-C5H5)](M = Zr, M*= Zr, Hf; M = Hf, M*= Zr, Hf), [(η5-C5H5)ZrCl2]{[(η5-C5H4)CM2(η5-C9H6)}ZrCl2(η5-C5Me5)], [(η5-C5H5)ZrCl2{(η5-C5H4)Cme2(η5-C9H6)}Rh(CO)2] and [(η5-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::65dfee8fc5a906fa74183e9f1dfe2218
https://doi.org/10.1039/c39940000727

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Dalton communications. ansa-Bridged tris(cyclopentadienyl) compounds of zirconium and hafnium: X-ray crystal structures of [M{Me2C(η5-C5H4)2}(η5-C5H5)Cl](M = Zr or Hf)

Autor: Malcolm L. H. Green, Gary M. Diamond, Alexander N. Chernega, Neil A. Popham

Publikováno v: J. Chem. Soc., Dalton Trans.. :2535-2536

The new ansa-bridged compounds [M{Me2C(η5-C5H4)2}(η5-C5H5)Cl](M = Zr or Hf) have been synthesised and their molecular structures determined by X-ray crystallography. The latter is the first example of a tris(η5-cyclopentadienyl) derivative of hafn

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::233424cec8694ff73657e99c5613f9e2
https://doi.org/10.1039/dt9930002535

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