Results 261 to 270 of about 28,818 (311)
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π-Complexes of the transition metals
Journal of Organometallic Chemistry, 1965Abstract The products formed by the action of p -tolylmagnesium bromide on CrCl 3 -(THF) 3 , ratio 3:1 in diethyl ether, and in the rearrangement of tri- p -tolylchromium in diethyl ether suspension have been isolated and characterized. The significance of these results with respect to the mechanism of the rearrangement of σ-bonded organochromium ...
R.P.A. Sneeden, F. Glockling, H. Zeiss
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Magnetic phase transitions in transition–metal complexes with triazole derivatives
Polyhedron, 2011 Three divalent transition-metal (Co, Ni and Cu) complexes with the organic anion, 1,2,4-triazolato (tr), as a ligand molecule were prepared by means of hydrothermal syntheses and their magnetic properties were investigated by SQUID magnetometry.
Tadashi Sugano, Mohamedally Kurmoo
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Journal of Organometallic Chemistry, 1993
The invention relates to transition metal complexes of general formulas (Ia) or (Ib) in which the substituents and indices have the following meanings: M represents titanium, zirconium, hafnium, vanadium, niobium or tantalum or an element of the third subgroup of the periodic table or of the lanthanides; X represents fluorine, chlorine, bromine, iodine,
U. Denninger +5 more
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The invention relates to transition metal complexes of general formulas (Ia) or (Ib) in which the substituents and indices have the following meanings: M represents titanium, zirconium, hafnium, vanadium, niobium or tantalum or an element of the third subgroup of the periodic table or of the lanthanides; X represents fluorine, chlorine, bromine, iodine,
U. Denninger +5 more
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Transition Metal Complexes of Boron
Angewandte Chemie International Edition, 1998Rapid advances have been made over the past few years in the chemistry of transition metal complexes with σ-bonded boryl and borylene ligands. The use of suitable substituents on boron has made possible both the synthesis and complete characterization of numerous compounds of this type, and the analysis of spectroscopic data provides the first insight ...
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ChemInform, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
Xianghua Yu +2 more
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AbstractFor Abstract see ChemInform Abstract in Full Text.
Xianghua Yu +2 more
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Bridging vinylalkylidene transition metal complexes
Coordination Chemistry Reviews, 2010Abstract Vinylalkylidene transition metal complexes have been extensively used as ‘multitalent tools’ in organic synthesis, covering a broad field of applications. The vinylalkylidene ligands can be monodentate; alternatively they can adopt a bridging coordination mode in complexes with two adjacent metal atoms.
BUSETTO, LUIGI +2 more
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Early Transition-Metal Perfluoroalkyl Complexes
Journal of the American Chemical Society, 2003Elusive early transition-metal perfluoroalkyl complexes have been isolated and structurally characterized for the first time. Trifluoromethyltrimethylsilane, CF3SiMe3, serves as an excellent trifluoromethyl group-transfer reagent and reacts with the known Ti(IV) fluoride complex Cp2TiF2 to yield the novel Ti(IV) trifluoromethyl fluoride compound, Cp2Ti(
Felicia L, Taw +2 more
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Photophysics of Transition Metal Complexes
2011This report summarises the literature reported in 2010 on the photophysical properties of metal complexes and their polynuclear supramolecular assemblies. The transition metal species considered here have been largely studied because of their optical properties, in particular luminescence.
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Energetic characteristics of transition metal complexes
Journal of Hazardous Materials, 2009Ten transition metal nitrate and perchlorate complexes of hydrazine and ethylenediamine were synthesized, namely [Cu(EN)(2)](ClO(4))(2), [Co(EN)(3)](ClO(4))(3), [Ni(EN)(3)](ClO(4))(2), [Hg(EN)(2)](ClO(4))(2), [Cr(N(2)H(4))(3)](ClO(4))(3), [Cd(N(2)H(4))(3)](ClO(4))(2), [Ni(N(2)H(4))(3)](NO(3))(2), [Co(N(2)H(4))(3)](NO(3))(3), [Zn(N(2)H(4))(3)](NO(3))(2),
Andrzej, Wojewódka +3 more
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Transition Metal Complexes and the Activation of Dioxygen
2014In order to address how diverse metalloprotein active sites, in particular those containing iron and copper, guide O₂binding and activation processes to perform diverse functions, studies of synthetic models of the active sites have been performed.
Gereon M, Yee, William B, Tolman
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