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Cyclometalated Phosphinine–Iridium(III) Complexes: Synthesis, Reactivity, and Application as Phosphorus-Containing Water-Oxidation Catalysts

10-Jun-2015 | Leen E. E. Broeckx; Alberto Bucci; Cristiano Zuccaccia; Martin Lutz; Alceo Macchioni; Christian Müller, Organometallics, 2015

The novel phosphinine-based coordination compound [Cp*Ir(P∧C)(CH3CN)]CF3SO3 (P∧C = cyclometalated 2,4,6-triphenylphosphinine) could be synthesized by chloride abstraction from [Cp*Ir(P∧C)Cl] with AgOSO2CF3 and crystallographically characterized. It turned out that this species is the first ...

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Stabilization of an Electron-Unsaturated Pd(I)–Pd(I) Unit by Double Hemichelation

09-Jun-2015 | Christophe Werlé; Lydia Karmazin; Corinne Bailly; Louis Ricard; Jean-Pierre Djukic, Organometallics, 2015

The competition between conventional coordination and hemichelation of a Pd(II) center of three different palladacycles was probed by reacting the tricarbonyl(η6-3-phenylprop-1-enyl)chromium anion with μ-chloro-bridged palladacycles. Structural X-ray diffraction analysis indicates that the main ...

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Promoting C–C Bond Coupling of Benzyne and Methyl Ligands in Electron-Deficient (triphos)Pt–CH3+ Complexes

02-Jun-2015 | Marzieh Dadkhah Aseman; Christina A. Roselli; Michel R. Gagné, Organometallics, 2015

In situ generated benzyne reacts at room temperature with (triphos)Pt–CH3+ to form a five-coordinate π-complex (2) that is isolable and stable in solution. Thermolysis of 2 at 60 °C generates (triphos)Pt(o-tolyl)+ (3), which is the product of formal migratory insertion of CH3– onto the ...

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Compounds of Group 14 Elements with an Element–Element (E = Si, Ge, Sn) Bond: Effect of the Nature of the Element Atom

29-May-2015 | Kirill V. Zaitsev; Elmira Kh. Lermontova; Andrei V. Churakov; Viktor A. Tafeenko; Boris N. Tarasevich; Oleg Kh. Pole ..., Organometallics, 2015

Two series of germanium compounds, (p-Tol)3Ge-MMe3 (M = Si (1), Ge (2), Sn (3)) and (Me3Si)3Ge-MPh3 (M = Ge (4), Sn (5)), were prepared using lithium or potassium intermediates. The changing of the reaction conditions results in trigermane Ph3Ge-Ge(SiMe3)2-GePh3 (6). The molecular structures of ...

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Catalytic Transfer of Magnetism Using a Neutral Iridium Phenoxide Complex

27-May-2015 | Amy J. Ruddlesden; Ryan E. Mewis; Gary G. R. Green; Adrian C. Whitwood; Simon B. Duckett, Organometallics, 2015

A novel neutral iridium carbene complex Ir(κC,O-L1)(COD) (1) [where COD = cyclooctadiene and L1 = 3-(2-methylene-4-nitrophenolate)-1-(2,4,6-trimethylphenyl)imidazolylidene] with a pendant alkoxide ligand has been prepared and characterized. It contains a strong Ir–O bond, and X-ray analysis ...

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Bis-hydrocarbyl Platinum(II) Ambiphilic Ligand Complexes: Alkyl–Aryl Exchange between Platinum and Boron

27-May-2015 | Bradley E. Cowie; David J. H. Emslie, Organometallics, 2015

Reaction of TXPB (2,7-di-tert-butyl-5-diphenylboryl-4-diphenylphosphino-9,9-dimethylthioxanthene) with [PtMe2(COD)] (COD = 1,5-cyclooctadiene) yielded [PtMePh(TXPB′)] (1; TXPB′ = 2,7-di-tert-butyl-5-methylphenylboryl-4-diphenylphosphino-9,9-dimethylthioxanthene), presumably via undetected ...

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Rhodamine–Ferrocene Conjugate Chemosensor for Selectively Sensing Copper(II) with Multisignals: Chromaticity, Fluorescence, and Electrochemistry and Its Application in Living Cell Imaging

20-May-2015 | Yuan Fang; Yi Zhou; Qingqing Rui; Cheng Yao, Organometallics, 2015

A ferrocene unit is introduced into the salicylaldehyde Rhodamine 6G hydrazone with an alkynyl group to constitute a new chemosensor, R6G-FC, for specifically sensing Cu2+ over other metal ions with multisignals. Upon interaction with Cu2+ in aqueous solution, R6G-FC expresses a detectable ...

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Azole Assisted C–H Bond Activation Promoted by an Osmium-Polyhydride: Discerning between N and NH

05-May-2015 | Beatriz Eguillor; Miguel A. Esteruelas; Israel Fernández; Mar Gómez-Gallego; Agustí Lledós; Mamen Martín-Ortiz; Mont ..., Organometallics, 2015

The capacity of the hexahydride complex OsH6(PiPr3)2 (1) to discern between the nitrogen atom and the NH unit in the azole assisted aryl C–H bond activation has been investigated. Complex 1 reacts with 2-phenylimidazole to give OsH3{κ2-C,N-(C6H4-imidazole)}(PiPr3)2 (2), which has been ...

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Electronic Control of Metal-Centered Chirality in η5:κS-Indenyl-Sulfanyl and -Sulfinyl Rhodacycles of 2-Phenylpyridine

28-Apr-2015 | Robert W. Baker; Peter Turner; Ian J. Luck, Organometallics, 2015

Cyclometalation of 2-phenylpyridine with the η5:κS-indenyl-sulfanyl and -sulfinyl rhodium dichloride complexes rac-8, (pR*,RS*)-9, and (pR*,SS*)-9 in the presence of AgSbF6 provided the rhodacyclic complexes 10, 11, and 12, respectively, in yields ranging from 72% to 92%. The complexes were ...

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Synthesis and Reactivity of Thioether-Dithiolate-Bridged Multi-iron Complexes

23-Apr-2015 | Ying Li; Yahui Zhang; Dawei Yang; Yang Li; Puhua Sun; Baomin Wang; Jingping Qu, Organometallics, 2015

The novel thioether-dithiolate-bridged diiron complex [Cp*Fe(μ-1κ3SSS′:2κ2SS-tpdt)FeCp*] (1, Cp* = η5-C5Me5; tpdt = S(CH2CH2S−)2) has been prepared by the reaction of [Cp*FeCl]2 with Li2(tpdt) in THF. Given the thermodynamic instability of 1, a one-electron oxidation was performed with Fc·PF6 (Fc ...

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