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Oleg V. Gusev Tat'yana A. Peganova Mikhail G. Peterleitner Svetlana M. Peregudova Larisa I. Denisovich Nikolai A. Ustynyuk
Peter M. Maitlis
《Journal of organometallic chemistry》1994,480(1-2):c16-c17Reaction of [Pt2(η5-C5Me5)2(η-Br)3]3+(Br−)3 with C5R5H (R = H,Me) in the presence of AgBF4 gives the first platinocenium dications, [Pt(η5-C5Me5)(η5-C5R5)]2+(BF4− )2. On electrochemical reduction, [pt(η5-C5Me5)2]2+ yields [Pt(η4-C5Me5H)(η2-C5Me5)]+ BF4−. kw]Cyclopentadienyl; Metallocenes; Platinum; Electrochemistry 相似文献
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The neutral complexes (η5-C5H5NiXL (X = Cl, L = PPh3 (I); L = PCy3 (II); X = Br, L = PPh3 (III); L = PCy3 (IV); X = I, L = PPh3 (V); L = PCy3 (VI)) have been obtained by treating NiX2L2 with thallium cyclopentadienide. The same reaction in the presence of TlBF4 gives cationic derivatives [(η5-C5H5)NiL2]BF4 (L = 2PPh2Me (VII); L = dppe (VIII)), whereas mononuclear complexes containing two different ligands (L2 = PPh3 + PCy3 (IX)) or dinuclear [(η5-C5H5)Ni(PPh3)]2dppe(BF4)2 (X) are obtained from the reaction of III with TlBF4 in the presence of a different ligand. Reduction of cationic complexes with Na/Hg gives very unstable nickel(I) derivatives (η5-C5H5)NiL2, which could not be isolated purely. Similar reduction of neutral complexes under CO gives a mixture of decomposition products containing [(η5-C5H5)Ni(CO)]2 and nickel(o) carbonyls, whereas in the presence of acetylenes, dinuclear [(η5-C5H5)Ni]2(RCCR′) (R = R′ = Ph; R = Ph, R′ = H) are obtained. 相似文献
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Reaction of [Cp* RuCl2]2 with
-alanine (
-alaH) in methanol at room temperature in the presence of NaOMe yields the complex Na[Cp* RuCl(
-ala)] (1), which contains a five-membered N,O-coordinated chelate ring. The analogous complex Na[Cp* RuCl(
-phe)] (2) is obtained under similar conditions but at 0°C in 90% yield. At temperatures above 20°C both 2 and the η6-coordinated complex [Cp* Ru(
-pheH)]Cl (4) are obtained, with the proportion of the latter increasing with temperature. Compound 4 is obtained in 88% yield by refluxing [Cp* RuCl2]2 and
-phenylalanine (
-pheH) in CH3OH/CH3ONa followed by separation from 2. The analogous ruthenium(II) sandwich complexes 5–10 were obtained from
-tyrosine and
-tryptophane and various derivatives. [Cp* Ru(
-met)] (3), prepared by the reaction of [Cp* RuCl2]2 with
-methionine (
-metH) in CH3OH/CH3ONa, displays N,O,S-coordination. 相似文献
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The addition of reactive carbanions to tricarbonyl(η4-1,3-diene)iron(0) complexes proceeded at ?78 °C to give putative tricarbonyl(η1,η2-but-3-en-1-y1)iron(0) anion complexes and at 25 °C to produce postulated tricarbonyl(η3-allyl)iron(O) anion complexes; trapping of reactive intermediates with dioxygen produced γ,δ-unsaturated acids and allylic alcohols, respectively. 相似文献
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