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Aggregation-Induced Emission of Bis(imino)acenaphthene Zinc Complexes: Photophysical Tuning via Methylation of the Flanking Aryl Substituents

19-Feb-2015 | Daniel A. Evans; Lucia Myongwon Lee; Ignacio Vargas-Baca; Alan H. Cowley, Organometallics, 2015

Bis(imino)acenaphthene zinc complexes with methylated aryl substituents have been examined from the standpoint of their photoluminescent properties. Although complexes 1–4 proved to be nonemissive in solution, complexes 1 and 2 were found to emit via an aggregation-induced emission pathway. On ...


Reactions of the Unsaturated Ditungsten Anion [W2Cp2(μ-PCy2)(μ-CO)2]− with C- and P-Based Electrophiles

19-Feb-2015 | M. Angeles Alvarez; M. Esther García; Daniel García-Vivó; Miguel A. Ruiz; M. Fernanda Vega, Organometallics, 2015

The Na+ salt of the title anion reacted with MeI to give a mixture of isomeric methoxycarbyne [W2Cp2(μ-COMe)(μ-PCy2)(μ-CO)] (major) and methyl-bridged [W2Cp2(μ-CH3)(μ-PCy2)(CO)2] (minor) derivatives, following from competitive methylation at the O atoms or at the ditungsten center, respectively. ...


Boryl-Dihydrideborate Osmium Complexes: Preparation, Structure, and Dynamic Behavior in Solution

18-Feb-2015 | Miguel A. Esteruelas; Ana M. López; Malka Mora; Enrique Oñate, Organometallics, 2015

The metal fragment Os(CO)(PiPr3)2 stabilizes boryl-dihydrideborate species, which can be viewed as snapshots of states of B–H oxidative addition of a R2BH molecule and frustrated B–H bond activation of a second one. Complex OsH2(η2-CH2═CHEt)(CO)(PiPr3)2 (2) shows a tendency to dissociate the ...


Coordination Induced Atropisomerism in an NHC-Based Rhodium Macrocycle

18-Feb-2015 | Rhiann E. Andrew; Dominic W. Ferdani; C. André Ohlin; Adrian B. Chaplin, Organometallics, 2015

Reversible interaction with carbon monoxide results in the onset of dynamic atropisomerism at 298 K in an otherwise static NHC-based rhodium pincer complex, [Rh(C^N^C-(CH2)12)(CO)][BArF4] (1, ArF = 3,5-C6H3(CF3)2). The mechanism of this process has been comprehensively interrogated by a ...


Molecular Rods Combining o-Carborane and Bicyclo[1.1.1]pentane Cages: An Insertion of the Triple Bond Located Next to a Highly Strained Cage

17-Feb-2015 | Jiří Kaleta; Zbyněk Janoušek; Marek Nečas; Ctibor Mazal, Organometallics, 2015

Octacarbonyl dicobalt and bis(dimethyl sulfide)decaborane B10H12(Me2S)2 were successfully added to 1,3-diethynylbicyclo[1.1.1]pentane in good yields. This is an interesting example of a cycloaddition reaction achieved next to the bicyclopentane cage that tends to rearrange in many other cases. It ...


Monomer–Dimer Divergent Behavior toward DNA in a Half-Sandwich Ruthenium(II) Aqua Complex. Antiproliferative Biphasic Activity

29-Dec-2014 | Natalia Busto; Marta Martínez-Alonso; José M. Leal; Ana M. Rodríguez; Fernando Domínguez; Ma Isabel Acuña; Gustavo E ..., Organometallics, 2014

The complex [(η6-p-cymene)Ru(OH2)(κ2-N,N-HL1)](OTf)2 (HL1 = 2-pyridin-2-yl-1H-benzimidazole), [2c](OTf)2, undergoes easy deprotonation of the N–H group at physiological pH, producing [(η6-p-cymene)Ru(OH2)(κ2-N,N-L1)]+, [2c′]+, prone to dimerization both in solution and in the solid state. X-ray ...


A Molecular Complex with a Formally Neutral Iron Germanide Motif (Fe2Ge2)

24-Dec-2014 | Anukul Jana; Volker Huch; Henry S. Rzepa; David Scheschkewitz, Organometallics, 2014

We report the synthesis and isolation of a stable complex containing the formally neutral Fe2Ge2 motif, which is stabilized by the coordination of an N-heterocyclic carbene to the germanium and of carbon monoxide to the iron center. [(NHCiPr2Me2)GeFe(CO)4]2 is obtained by reduction of the ...


Functionalized Ruthenium Dialkynyl Complexes with High Second-Order Nonlinear Optical Properties and Good Potential as Dye Sensitizers for Solar Cells

23-Dec-2014 | Filippo Nisic; Alessia Colombo; Claudia Dragonetti; Eleonora Garoni; Daniele Marinotto; Stefania Righetto; Filippo D ..., Organometallics, 2014

Various dipolar π-delocalized Ru(II) dialkynyl complexes were prepared and characterized. Their second-order nonlinear optical (NLO) properties were investigated by the electric-field-induced second harmonic generation (EFISH) technique working in CH2Cl2 solution with an incident wavelength of ...


Hydrolysis and Methanolysis of Silanes Catalyzed by Iridium(III) Bis-N-Heterocyclic Carbene Complexes: Influence of the Wingtip Groups

23-Dec-2014 | Mélanie Aliaga-Lavrijsen; Manuel Iglesias; Andrea Cebollada; Karin Garcés; Nestor Garcı́a; Pablo J. Sanz Miguel; Fra ..., Organometallics, 2014

New [Ir(CH3CN)2(I)2{κC,C′-bis(NHC)}]BF4 complexes featuring bis-NHC ligands with a methylene bridge and different N substitution (−CH2CH2CH2CH3 and −CH2CH2OPh) were synthesized. NMR studies and X-ray diffraction structures evidenced that the wingtip group −CH2CH2OPh presents a hemilabile behavior ...


[H3–nFe4(CO)12(IrCOD)]n− (n = 1, 2) and [H2Fe3(CO)10(IrCOD)]− Bimetallic Fe–Ir Hydride Carbonyl Clusters

22-Dec-2014 | Marco Bortoluzzi; Iacopo Ciabatti; Cristina Femoni; Mohammad Hayatifar; Maria Carmela Iapalucci; Stefano Zacchini, Organometallics, 2014

The reaction of [HFe4(CO)12]3– (1) with [Ir(COD)Cl]2 results in the formation of the bimetallic Fe–Ir monohydride carbonyl cluster [HFe4(CO)12(IrCOD)]2– (2). This is quantitatively protonated by strong acids to the dihydride [H2Fe4(CO)12(IrCOD)]− (3). Further addition of acids to 3 results in the ...


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