Results 251 to 260 of about 175,134 (306)

Semiconductivity in Chromium (III) Trisacetylacetone

Physica Status Solidi (a), 1972
Thin films of chromium (III) trisacetylacetone complex are found to be p-type semiconductors. The analysis of the current–voltage characteristics in the dark and under illumination indicates that the results are consistent with the assumption of an exponential distribution of trapping states in the forbidden gap.
A. P Chappe, J . I Vabgas
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Chromium(III) and Chromium(IV) Tetraphenylporphine Complexes

Russian Journal of Coordination Chemistry, 2002
Stable chromium complex (AcO)CrTPP was synthesized through the reaction of meso-tetraphenylporphine with chromium(III) acetate in boiling phenol. Coordination properties of chromium porphyrin in reaction with imidazole and pyridine in o-xylene were studied by electronic absorption spectroscopy and computer modeling.
S. V. Zaitseva, S. A. Zdanovich, O. A. Golubchikov   +2 more
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Cyclopentadienyl mesityl complexes of chromium(ii) and chromium(iii)

Dalton Trans., 2011
Chromium(III) mesityl complexes were synthesized by protonolysis of chromocene with 1,3-diisopropylimidazolium chloride or DBU hydrochloride, salt metathesis with MesMgBr, and single electron oxidation with iodine.
Wen, Zhou, Jeffrey A, Therrien, D Lee K, Wence, Emily N, Yallits, Julia L, Conway, Brian O, Patrick, Kevin M, Smith   +6 more
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A trinuclear chromium(iii) chlorocarbyne

Chemical Communications, 2021
Reduction of CCl4 by CrCl2 in THF afforded a trinuclear chromium(iii) carbyne [CrCl(thf)2]3(μ3-CCl)(μ-Cl)3.
Takashi Kurogi, Keiichi Irifune, Takahiro Enoki, Kazuhiko Takai   +3 more
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Chromium(III) complexes

Drugs of the Future, 2003
While chromium picoiinate ([Cr(pic) 3 ]) and the other currently marketed chromium(III) supplements are best known by the general public as weight loss and muscle building agents, the supplements have no effect on body composition, At pharmacological levels, they can have beneficial effects on type 2 diabetic subjects (lowering serum glucose, insulin ...
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Microscopic detection of chromium as chromium(III)

Mikrochemie Vereinigt mit Mikrochimica Acta, 1951
Trisodium phosphate is recommended as a reagent for the microscopic detection of chromium (III). Sensitivity of the test is 6γ of chromium (III) in a volume of 0.01 ml. Of particular importance is the fact that aluminum and iron (III) do not react with the reagent to form crystalline precipitates.
Philip W. West, Lawrence Granatelli
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Hydrolytic chromium(III)–sulfur bond cleavage in chromium(III)–cysteine complexes

Transition Metal Chemistry, 2015
Two chromium(III)–cysteine complexes, [Cr(Cys)2]− and [Cr(Cys)(H2O)3]+, have been synthesized, and their reactivity in aqueous solution studied. Kinetics of the acid-catalyzed Cr–S bond fission was studied in strongly acidic medium, monitoring the absorbance decrease of the S → Cr CT band. The dependences of the pseudo-first-order rate constants on [H+]
Emilia Kiersikowska, Ewa Kita, Przemysław Kita   +2 more
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Preparation of Chromium(III) Phthalate and Chromium(III) PyromellitateviaChromium(VI) Oxide

Journal of Coordination Chemistry, 1992
Abstract Reduction of CrO3 at room temperature by ethanol in the presence of phthalic acid (H2pht) and pyromellitic acid (H4pyr) yields solutions that contain monomeric and low oligomeric (dimeric) Cr(III) complexes. A solution with an H4pyr/Cr mol ratio of 1.5:1 is indefinitely stable toward precipitation, whereas the corresponding solution having a ...
Dušanka D. Vasović, Djordje R. Stojaković   +1 more
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Tris(dithioacetylacetonato)chromium(III)

Australian Journal of Chemistry, 1972
The synthesis of the first dithioaoetylacetonate of a Group VI transition metal has been achieved by reduction of the 3,5-dimethyl-1,2-dithiolium cation with divalent chromium. The physical properties of the dark green monomer [Cr(SacSac)3] are reported.
GA Heath, RL Martin, AF Masters
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Chromium(III)-Oxyanion Systems

Nature, 1961
CERTAIN hexaquochromium(III) oxyanion compounds (in particular, the phosphate, arsenate and sulphate) have shown marked similarities in their behaviour on thermal degradation and in solutions with their corresponding oxyacids. This behaviour can best be explained on the basis of olation-condensation reactions which are believed to occur both in the ...
G. M. LUKASZEWSKI, J. P. REDFERN
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