[PDF] Top 20 Dinuclear cationic zirconium complexes with the fulvalene ligand Synthesis and reactivity
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Dinuclear cationic zirconium complexes with the fulvalene ligand Synthesis and reactivity
... However, monitoring the reaction of BC6F5 3 with lb by variable temperature NMR spectroscopy, between -80°C and 25°C, permits the observation, at low temperature, of the intermediate dim[r] ... See full document
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Synthesis and reactivity of imido niobium complexes containing the functionalized (dichloromethylsilyl)cyclopentadienyl ligand
... gave dinuclear compounds with Si–O–Ti [28] bridges and one additional Si–O–Si bridge (for R = Me) ...[31]. The second type of compound comprised the bis(silyl-g- amido)cyclopentadienyl ... See full document
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Synthetic and reactivity studies of mono and dicyclopentadienyl titanium, zirconium and hafnium complexes with the chlorodimethylsilyl cyclopentadienyl ligand X ray molecular structure of Hf{(η5 C5H4)SiMe2OSiMe2(η5 C5H4)}Cl2 and Zr(η5 1,3 tBu2C5H3)(η5 C5H4SiMe2 η NtBu)Cl
... polymers and ethylene – a -olefin copolymers with re- markable properties ...reported the synthesis and reactivity of mono- and dicyclopentadienyl complexes of ... See full document
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Synthesis and characterization of methyl phenyl substituted cyclopentadienyl zirconium complexes
... on the regioselectivity of reactions made to introduce a third substituent on any of the three possible positions of the 1-Ph-3-Me-cyclopentadiene or on the electronic and steric effects ... See full document
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Allylsilylcyclopentadienyl Group 4 metal complexes: synthesis, structure and reactivity
... consistent with the comparable basicity and steric demands of the ligands attached to zirconium, in spite of the greater electron-donating ability of the indenyl compared ... See full document
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Transition metal complexes with functionalized silyl substituted cyclopentadienyl and related ligands: synthesis and reactivity
... ring) and its derivatives. The two cyclopentadienyl rings in these compounds and their related derivatives typically display a canted arrangement that forms a protective pocket around the ... See full document
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Neutral and Cationic [Bis(η1 amidosilyl) η5 cyclopentadienyl]titanium and zirconium complexes: synthesis, X ray molecular structures and DFT calculations
... amidosilyl)cyclopentadienyl]titanium and -zirconium com- plexes by direct deprotonation of the corresponding bis(am- inosilyl)cyclopentadiene with metal tetraamide and tetra- benzyl ... See full document
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Synthesis and reactivity of new mixed dicyclopentadienyl Group 4 metal complexes with the doubly bridged bis(dimethylsilanediyl) cyclopentadiene (η5 cyclopentadienyl) ligand
... bridge dinuclear metal compounds. We have recently reported the use of the 1,1%-2,2%-(dimethylsi- lanediyl)dicyclopentadienyl ligand to synthesize ansa - dicyclopentadienyl and bridged ... See full document
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Reactivity of the dinuclear fulvalene cyclopentadienyl zirconium cationic species [{Zr(η5 C5H5)}2(μ CH2)(μ Cl)(μ η5 C5H4 η5 C5H4)]+ with isocyanides and carbon monoxide: insertion reactions, spectroscopic characterization and synthetic aspects
... studying the reactivity of these mononuclear 14-elec- tron cations with CO, RNC, olefins, acetylenes or allenes, leading to the discovery of novel organometallic compounds [2 – ...contrast, ... See full document
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Zirconium and hafnium complexes with (allylsilyl)(η amidosilyl) η5 cyclopentadienyl ligands: synthesis, structure and reactivity
... of the silylamido derivatives 6–9 in solution, for which the enantiotopic 1,3-disilylcyclopentadi- enyl ring faces are responsible for the asymmetry of these ...consistent with a cen- ... See full document
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Reactivity of vinyl and alkynyl zirconium complexes with the di ansa [1,1′,2,2′ bis(dimethylsilanediyl) dicyclopentadienyl] ligand
... proton and five carbon reso- nances corresponding to one ABC spin system due to four equivalent C 5 H 3 rings, and four proton and car- bon singlets for the silicon-bound methyl groups of a ... See full document
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Synthesis and reactivity of di(silylamido)cyclopentadienyl titanium and zirconium complexes
... metallocene complexes to produce polyolefins is the limited temperature stability of the catalyst and the tendency to produce lower molecular weight materials under convenient commercial ... See full document
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TítuloSelf‐aggregated dinuclear lanthanide(III) complexes as potential bimodal probes for magnetic resonance and optical imaging
... CTQ2009‐10721) and Xunta de Galicia (IN845B‐2010/063) for financial ...in the frameworks of the EU COST Actions D38 “Metal‐Based Systems for Molecular Imaging Applications” and CM1006 “EUFEN: ... See full document
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Synthesis and characterization of η5 tetramethylcyclopentadienyl hydrido and chloro silyl η1 amido zirconium complexes
... which the h 5 -cyclopentadienyl group is tethered by one additional anionic or neutral N- or O-donor group form interesting types of metal chelate complexes, reviewed recently ...-amido complexes ... See full document
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Studies related to the chloro titanium and zirconium complexes with [η5 Cyclopentadienyldi(silylamido)] Ligands
... data and details of the struc- ture determination (Table 2) and bond lengths and bond angles (Table 1) are given ...fixed and sealed. Preliminary examination and data collection ... See full document
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TítuloSynthesis of bench stable solid triorganoindium reagents and reactivity in palladium catalyzed cross coupling reactions
... on the nature of the R groups. These reagents reacted with organic electrophiles under palladium catalysis to afford the coupling products in good ...of the solid organometallic reagent ... See full document
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Synthesis and reactivity of new silyl substituted monocyclopentadienyl molybdenum and tungsten complexes
... [6] See for example: (a) Murrell, in: J.J. Burton, R.L. Garten (Eds.), Advanced Materials in Catalysis, Academic Press, New York, 1977. (b) R.L. Pruett, Adv. Organomet. Chem. 17 (1979) 1. (c) C.U. Pittman, in: P. Hodge, ... See full document
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Synthesis and reactivity of new silyl substituted monocyclopentadienyl zirconium complexes X ray molecular structure of [Zr{η5 C5H4(SiMe2CH2Ph)}(CH2Ph)3]
... These reactions give substitution of the chlorine ligands bonded to the zirconium atom and involve a different and efficient approach to the synthesis of new silyl substituted monocyclop[r] ... See full document
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Neutral and cationic di(tert butyl) cyclopentadienyl titanium, zirconium and hafnium complexes Dynamic NMR study of the ligand free cations [M(1,3 tBu2 η5 C5H3)(η5 f5H5)(CH3)]+(M=Zr, Hf)
... The H NMR spectra of complexes 20 and 21 show the presence of two equivalent tert-butyl groups, the expected AK B spin system for the ring protons and two equivalent benzyl ligands with [r] ... See full document
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N phenanthroline glycosylamines: synthesis and copper(II) complexes
... ppm and the introduction of carbohydrate moieties only slightly affected their chemical ...COSY and TOCSY correla tions two groups of aromatic signals could be ...differentiated. The ... See full document
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