Zobrazeno 1 - 10 of 85 pro vyhledávání: '"H.J. de Liefde Meijer"'
1
Instability of complexes containing the dicyclopentadienylvanadium(iv) group
Autor: F. W. Siegert, H.J. de Liefde Meijer
Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 89:764-768
The preparation of complexes of the type (π-C5H5)2VR2 has been attempted by reaction of one mole of vanadocene dichloride with two moles of an organo-metallic reagent RM (RM = C6H5Na and C6F5Li); these reactions result in the formation of complexes
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::84447f75e777d7b3f91b4ae360708768
https://doi.org/10.1002/recl.19700890712
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2
Studies in transition metal chemistry. Part VI: Soluble Ziegler-type catalysts based on vanadium. Part II
Autor: J.W.G. van den Hurk, G. J. M. van der Kerk, H.J. de Liefde Meijer
Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 85:1025-1038
Experiments are described aiming at a simplification of the catalyst system originally consisting of a mixture of tetraphenyltin, aluminium bromide and vanadium tetrachloride (or vanadium oxytrichloride). It is shown that tetraphenyltin merely acts a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::47c4de516a5c272f4d33018927acb408
https://doi.org/10.1002/recl.19660851007
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3
Studies in transition metal chemistry. part IV: The suitability of cyclopentadienylvanadium compounds as components of Ziegler-type polymerization catalysts
Autor: H.J. de Liefde Meijer, G.J.M. van der Kerk
Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 85:1007-1017
The polymerization of ethylene with Ziegler-type catalysts containing mono- and bis-cyclopentadienylvanadium compounds as constituents has been studied. The activities of these catalyst mixtures have been compared with those of two known highly activ
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ae2fd742fd000b43d43acc42068f66bf
https://doi.org/10.1002/recl.19660851005
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4
Studies in transition metal chemistry. Part III the oxidation of biscyclopentadienylvanadium compounds by oxygen and the synthesis of cyclopentadienylvanadium oxydichloride
Autor: H.J. de Liefde Meijer, G.J.M. van der Kerk
Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 84:1418-1426
Cp2V and Cp2VR (Cp = πC5H5, R = alkyl or aryl) were found to react with atmospheric oxygen to give a product with the empirical formula C10H12O5V2. Evidence was obtained that in the oxidation product cyclopentadienyl rings π‐bonded to the vana
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b5744e8433e569fe4954e078f292dea0
https://doi.org/10.1002/recl.19650841106
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7
Uv photoelectron spectra of (cyclopentadienyl)-(cycloheptatrienyl)-zirconium, -niobium and -molybdenum
Autor: H.J. de Liefde Meijer, A. Oskam, F. Jellinek, C.J. Groenenboom
Publikováno v: Journal of Organometallic Chemistry, 97(1), 73-77. Elsevier Science
He(I) photoelectron spectra of the compounds (C5H5)M(C7H7) (M = Zr, Nb, Mo) are reported. The results are compared with those for the corresponding 3d transition metal compounds and discussed in terms of qualitative MO considerations.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::613fa19d71e846ffae7879558430be03
https://research.rug.nl/en/publications/7eabf4f1-f6c0-4bf7-a322-ab382823f018
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8
Cyclopentadienylcycloheptatrienylmetal compounds of zirconium, niobium, molybdenum and chromium
Autor: C.J. Groenenboom, H.J. de Liefde Meijer, H.O. Van Oven
Publikováno v: Journal of Organometallic Chemistry, 81(3), 379-384. Elsevier Science
The synthesis properties of the compounds (C 5 H 5 )M(C 7 H 7 ) with M = Zr and Nb are described. The Zr compounds is diamagnetic; its PMR spectrum shows two singlets with intensities in the ratio of 7/5; the niobium compound has one unpaired electro
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46e91ee54d8f1ed1c3b2fcde27dbfc36
https://doi.org/10.1016/s0022-328x(00)88206-6
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9
Allyl complexes of dicyclopentadienyl-niobium(III) and -tantalum(III)
Autor: H.J. de Liefde Meijer, A. Van Baalen, C.J. Groenenboom
Publikováno v: Journal of Organometallic Chemistry, 74(2), 245-253. Elsevier Science
The synthesis and the properties of the complexes Cp2TaCl2, Cp2M(allyl), Cp2M(1-methylallyl) and Cp2M(2-methylallyl) with M  Nb, Ta are described. The complex Cp2TaCl2 has one unpaired electron per tantalum atom, while the allyl complexes are diam
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd68cd041a15e24765ba8e1833747ef6
https://hdl.handle.net/11370/549a8935-be58-4a94-b804-d934a6d6f1ea
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10
Cyclooctatetraenetitanium chloride and its adducts with THF and some amines
Autor: J. L. de Boer, H.O. Van Oven, F. Jellinek, H.J. de Liefde Meijer, H. R. van der Wal, F. Overzet
Publikováno v: Journal of Organometallic Chemistry, 92(3), 329-340. Elsevier Science
The syntheses and the results of mass spectrometry and infrared spectroscopy are reported of cyclooctatetraenetitanium chloride and its adducts with the donor molecules THF, diethylamine, pyrrolidine and pyridine. Single-crystal X-ray diffraction sho
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e451abfb56805d2b94c0cf39e819d98b
https://doi.org/10.1016/s0022-328x(00)85684-3
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