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Two in One: Luminescence Imaging and 730 nm Continuous Wave Laser Driven Photodynamic Therapy of Iridium Complexes

12-Dec-2014 | Fengfeng Xue; Yang Lu; Zhiguo Zhou; Min Shi; Yuping Yan; Hong Yang; Shiping Yang, Organometallics, 2014

A phosphorescent cationic iridium complex (1) with a donor−π-donor type unit as a N∧N ligand and 2-phenylpyridine as a C∧N ligand was synthesized and characterized. 1 exhibits an intense absorption peak centered at ∼450 nm with a large molar extinction coefficient (ε) of ∼2.4 × 104 M–1 cm–1 and ...


Homoleptic Tris(α,ω-alkanediyl)yttriates of the Type [{Li(dme)}3{Y(CH2-X-CH2)3}] (X = C2H4, C3H6, Si(CH3)2)

12-Dec-2014 | Reinald Fischer; Stefan Bode; Mathias Köhler; Jens Langer; Helmar Görls; Martin D. Hager; Ulrich S. Schubert; Matthi ..., Organometallics, 2014

The metathesis reaction of anhydrous yttrium(III) chloride with ethereal solutions of 1,4-dilithiobutane, 1,5-dilithiopentane as well as bis(lithiomethyl)dimethylsilane in the molar ratio of 1:3 yields the homoleptic yttriates [{Li(dme)}3{Y(C4H8)3}] (2), [{Li(dme)}3{Y(C5H10)3}] (3), and ...


Synthesis and High Solid-State Fluorescence of Cyclic Silole Derivatives

11-Dec-2014 | Yuanjing Cai; Kerim Samedov; Brian S Dolinar; Zhegang Song; Ben Zhong Tang; Chaocan Zhang; Robert West, Organometallics, 2014

Cyclotetrasiloxanes 1–3 containing different silole-based fluorogenic units (silafluorene, 1,3-diphenyl-9-silafluorene, tetraphenylsilole) were synthesized by cohydrolysis and condensation reactions. Their optical properties in solution and as crystals were studied. These compounds have low ...


Remarkably Robust Mono-n-butyl Group IV Dicyclohexylamido Complexes {(Cy)2N}3M(n-butyl) (Cy: cyclohexyl [C6H11], M: Ti, Zr)

08-Dec-2014 | Christian Adler; Gabriele Tomaschun; Marc Schmidtmann; Rüdiger Beckhaus, Organometallics, 2014

The syntheses of alkyl titanium and zirconium dicyclohexylamido complexes from (Cy2N)3MCl (Cy: cyclohexyl, M: Ti 1a, M: Zr 1b) are presented. Particularly the β-H-containing n-butyl derivatives (Cy2N)3MnBu (M: Ti 3a, M: Zr 3b) become available as isolable, thermally stable complexes by reactions ...


Organolanthanide Complexes Supported by Thiazole-Containing Amidopyridinate Ligands: Synthesis, Characterization, and Catalytic Activity in Isoprene Polymerization

08-Dec-2014 | Lapo Luconi; Dmitrii M. Lyubov; Andrea Rossin; Tatyana A. Glukhova; Anton V. Cherkasov; Giulia Tuci; Georgy K. Fukin ..., Organometallics, 2014

Neutral bis(alkyl)-organolanthanide complexes supported by tridentate {N–,N,N} monoanionic 5-methylthiazole- or benzothiazole-amidopyridinate ligands have been prepared and completely characterized: (LThiaMe2)Ln(CH2SiMe3)2 [Ln = Lu3+ (3), Er3+ (7), Yb3+ (8)] and (LBnThMe2)Lu(CH2SiMe3)2 (5). ...


Synthesis and Characterization of Rare Earth Siloxide Complexes, M[OSi(OtBu)3]3(L)x where L is HOSi(OtBu)3 and x = 0 or 1

05-Dec-2014 | Giuseppe Lapadula; Matthew P. Conley; Christophe Copéret; Richard A. Andersen, Organometallics, 2014

The reaction of lanthanide and group 3 amides, M[N(SiMe3)3]3, with 3 equiv of tris(tert-butoxy)silanol, (tBuO)3SiOH, gives M[OSi(OtBu)3]3 complexes. Their solid-state structure depends on the size of the lanthanide metal; for M = Sc, Yb, and Lu, the primary coordination sphere is a square-based ...


Solid-State Structure and Solution Reactivity of [(Ph3P)4Ru(H)2] and Related Ru(II) Complexes Used in Catalysis: A Reinvestigation

03-Dec-2014 | Hamidreza Samouei; Fedor M. Miloserdov; Eduardo C. Escudero-Adán; Vladimir V. Grushin, Organometallics, 2014

X-ray analysis of [(Ph3P)4Ru(H)2] (1) prepared by a literature procedure [Young, R.; Wilkinson, G. Inorg. Synth. 1990, 28, 337] shows that 1 is cocrystallized with PPh3, explaining the previously reported observations of free phosphine in solutions of 1. Lattice PPh3-free forms of 1 have also ...


Facile and Room-Temperature Activation of Csp3–Cl Bonds by Cheap and Air-Stable Nickel(II) Complexes of (N-Thioether) DPPA-Type Ligands

26-Nov-2014 | Alessio Ghisolfi; Francesca Condello; Christophe Fliedel; Vitor Rosa; Pierre Braunstein, Organometallics, 2014

Reaction of the diphosphine (P,P) ligand N(PPh2)2(n-PrSMe) (1) or N(PPh2)2(p-(SMe)C6H4) (2) with [Ni(NCMe)6][BF4]2 in a 2:1 molar ratio afforded the bis-chelated, dicationic Ni(II) complexes [Ni(1)2][BF4]2 (3) and [Ni(2)2][BF4]2 (4), respectively. Both complexes were characterized in solution by ...


Neutral Luminescent Bis(bipyridyl) Osmium(II) Complexes with Improved Phosphorescent Properties

17-Nov-2014 | Wing-Kin Chu; Shek-Man Yiu; Chi-Chiu Ko, Organometallics, 2014

A new class of neutral bis(isocyanoborato) bis(bipyridyl) Os(II) complexes with the general formula of [Os(N–N)2(CNBR3)2] (N–N = bpy, 4,4′-Me2bpy; R = C6F5, C6H5) were prepared with simple synthetic methodologies. One of these complexes was structurally characterized by X-ray crystallography. ...


Syntheses of Enantiopure Bifunctional 2-Guanidinobenzimidazole Cyclopentadienyl Ruthenium Complexes: Highly Enantioselective Organometallic Hydrogen Bond Donor Catalysts for Carbon–Carbon Bond Forming Reactions

17-Nov-2014 | Tathagata Mukherjee; Carola Ganzmann; Nattamai Bhuvanesh; John A. Gladysz, Organometallics, 2014

2-Guanidinobenzimidazole (GBI) derivatives with a NHR group in place of NH2 (R: a, CH2Ph; b, (SC)-CH(CH3)Ph; c, (RCRC)-CH(CH2)4CHNMe2; d, (RCRC)-CH(CH2)4CH-NCH2(CH2)3CH2) are prepared in four steps from 2-aminobenzimidazole. Reactions with [(η5-C5H5)Ru(CO)(NCCH3)2]+PF6– (5+PF6–) afford the ...


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