The properties of amorphous 250 nm and 1 μm silicon films deposited by radio-frequency (rf) magnetron sputtering on copper foil are investigated using -ray diffraction, scanning electron microscopy (SEM), electrochemical methods. Galvanostatic half-cell measurements conducted between 0.02 1.2 V a lithium counter electrode have shown that the Si thin exhibit an excellent reversible specific capacity nearly 3500 mAh/g when tested for 30 cycles. high cyclability sputtered suggest adhesion Cu...

The synthesis as well the structural and photophysical characterization of two isoleptic bis-cyclometalated Pt(II) Pd(II) complexes, namely [PtL] [PdL], bearing a tailored dianionic tetradentate ligand (L2–) are reported. isostructural character intermolecular interactions [PdL] were assessed by NMR spectroscopy X-ray diffraction analysis. Both complexes show fully ligand-controlled aggregation, demonstrating that judicious molecular design can tune properties. In fact, introduction fluorine...

Amorphous silicon thin films deposited on copper foil have been observed to exhibit near theoretical capacity for a limited number of cycles. The films, however, eventually delaminate, leading failure the anode. In order better understand mechanism retention and ultimate mode model brittle active:elastic/plastic inactive anode system, were subjected in situ adhesion tests while observing film surface using scanning electron microscopy. Atomic force transmission microscopy, electrochemical...

Treasure complexes: Lutidine-bridged tetraimidazolium salts form macrocyclic mono- and dinuclear silver(I) gold(I) carbene complexes, whereas the lutidine-bridged hexakis(imidazolin-2-ylidene) ligand reacts with to yield complex [1]+, which contains six atoms arranged in a hexagon sandwiched between two hexacarbene ligands. Detailed facts of importance specialist readers are published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made...

The synthesis of cylinder-type carbene complexes from polycarbene ligands and coinage metal ions via metal-controlled self-assembly has been explored. Imidazole reacts with 1,2,4,5-tetrabromobenzene or 1,3,5-tribromobenzene to give 1,2,4,5-tetrakis(1-imidazolyl)benzene (1) 1,3,5-tris(1-imidazolyl)benzene (3), respectively. tetrakisimidazolium salts type H4-2a,b(Br)4 the trisimidazolium H3-4a,b(Br)3 have prepared by alkylation remaining free imines tetrakis- trisimidazoles (H4-2a4+, H3-4a3+:...

Nickelocene reacts with a rigid bisimidazolium salt to give cyclopentadiene and biscarbene-bridged dinuclear nickel complex, which upon treatment 4,4′-bipyridine AgBF4 yields the CpNiII-cornered molecular rectangle [1](BF4)4.

Hydroalumination of aryldialkynylphosphines RP(C≡C-(t)Bu)(2) (R = Ph, Mes) with equimolar quantities diethylaluminum hydride afforded mixed alkenyl-alkynyl cyclic dimers in which the dative aluminum-phosphorus bonds are geminal to exocyclic alkenyl groups. Addition triethylaluminum isolated 1 Ph) or situ generated species caused ethynide elimination yield arylethylphosphorus 2 and 3. These possess a chair-like Al(2)C(2)P(2) heterocycle intermolecular Al-P interactions. The boat conformation...

The synthesis of N-heterocyclic carbene-diphosphine macrocycles by metal template assisted cyclization reactions has been explored. Attempts to prepare the facial tungsten tricarbonyl precursor complex containing an NH,NH-functionalized carbene and a suitable diphosphine resulted in displacement coordinated isolation corresponding tetracarbonyl [3]. Re(I) chloro bearing ligand [5] can be prepared is for subsequent formation intermediate [H(2)-6]Cl reactive 2-fluoro substituents at...

Two new diphenylphosphine-substituted benzimidazoles featuring an ethylene (2) or a methylene linker (5) between the benzimidazole and phosphine have been prepared. These precursors for bidentate carbene/phosphine ligands react with [RuCp*(μ3-Cl)]4 under tautomerization formation of complexes type [RuCp*Cl(L)] ([6] [7], L = NR,NH-carbene/phosphine ligand). The crystal structures [6] [7] determined by X-ray diffraction. studies revealed that length bridge benzimidazol-2-ylidene determines...

The unsymmetrical tris(imidazolium) salt H3-1(Br)3, featuring a 1,2,4-substitution pattern of the central phenyl ring, after triple imidazolium C2 deprotonation reacts in one-pot reaction with Pd(OAc)2 and [M(Cp*)(Cl)2]2 (M = Rh(III), Ir(III)) to yield heterobimetallic complexes [3] Rh) [4] Ir), which Pd(II) ion is chelated by two ortho N-heterocyclic carbene (NHC) donors while third NHC donor coordinates M(III) center, orthometalates ring.

The N-alkyphosphine-substituted benzimidazoles 5 (R = methylenedicyclohexylphosphine), 7 ethylene-di(tBu)phosphine), and 8 ethylenedicyclohexylphosphine) have been prepared. react with [RhCl(COE)2]2 in the presence of tertiary phosphines under formal tautomerization benzimidazole chelating coordination resulting bidentate NH,NR-NHC/phosphine ligand (P∧C) to give complexes [RhCl(P∧C)PR3] [6]–[9]. Depending on steric demand PR3, P∧C ligands, spacer linking ring nitrogen atom alkylphosphine,...

We report herein a series of organometallic Borromean rings (BRs) and [2]catenanes prepared from benzobiscarbene ligands. The reaction dinickel complexes the benzobiscarbenes 1 a-1 c with thiazolothiazole bridged bipyridyl ligand L2 led by self-assembly to BRs. Solvophobic effects played crucial role in formation stability interlocked species. BRs is related N-alkyl substituents at precursors c, where longer alkyl substitutes improve inter-ring interactions. are also important for flexible...

Bridged bis(benzimidazoline-2-germylene)s have been prepared in good yield by the reaction of N,N',N,' 'N' ''-tetralithiated tetraamines with GeCl2·1,4-dioxane or direct transamination between and Ge[N(SiMe3)2]2. Four different bridging groups benzimidazoline-2-germylene shown X-ray diffraction analysis to exhibit types weak intermolecular interactions, but no significant Ge···Ge interaction was observed solid state. One bisgermylenes disproportionates solution at ambient temperature a...

The reaction of the benzannulated bisstannylene ligand 2 with Sn O or Pb generated in situ gave pincer complexes 3 and 4. Both have been characterized by X-ray diffraction multinuclear NMR spectroscopy. A divalent state has found Mössbauer spectroscopy for tin atoms

Reaction of the N,N'-diisobutyl-substituted benzannulated N-heterocyclic plumbylene (NHPb) 1 with [Pd(PPh(3))(4)] and [Pt(PPh(3))(4)] gave complexes [M(NHPb)(PPh(3))(3)] (M = Pd [2], Pt [3]). X-ray diffraction studies both showed an angle ~125° between plane transition-metal-Pb axis, indicating coordination transition metal to empty π orbital Pb atom. The experimentally determined metric parameters [2] [3] are discussed on basis DFT calculations.

The metal-controlled self-assembly of nanometer-sized trinuclear cylinder-like assemblies is described. 1,3,5-triphenylbenzene-derived trisimidazolium salt [1](PF6)3 reacts with 1.5 equiv Ag2O to yield the AgI hexacarbene complex [2](PF6)3, where three ions are sandwiched in between two C3-symmetric tris-NHC ligands. Transmetalation [2](PF6)3 3 [AuCl(SMe2)] or CuI yields AuI [3](PF6)3 [4](PF6)3, respectively, retention metallosupramolecular structure. 1,3,5-triphenylbenzene ligand gold...

The DNA lesion 1,N(6)-ethenoadenine (εA) has been investigated with respect to its metal-binding properties. A synthetic duplex comprising an εA : mispair readily forms doubly silver(I)-mediated base pairs εA-Ag(I)2-εA, representing the first example for a dinuclear metal-mediated homo pair of purine derivative. It also constitutes Hoogsteen-type within B-DNA duplex.

Abstract A novel artificial nucleobase, 1‐(3‐(hydroxymethyl)phenyl)‐3‐phenylpropane‐1,3‐dione (Hdbm OR ), containing a β ‐diketone designed to form inter‐strand complexes that resemble metal‐mediated base pairs, was synthesized and characterized towards its lanthanoid ion binding properties. Based on UV/vis spectra, (labile) coordination of Eu III Sm by the benzyl‐functionalized model ligand is proposed, allowing detection distinct luminescence patterns upon under alkaline conditions. The...

A family of 16 platinum(II) complexes was synthesized with the aim obtaining water-soluble luminescent coordination compounds for guanine quadruplex (G4) binding. The share a common tridentate N^N^C-donor ligand (based on 2-phenyl-6-(1H-1,2,3-triazol-4-yl)pyridine) bearing different substituents solubilization, and an additional monodentate ancillary (either phenylacetylide or 3-(trimethylammonium)prop-1-yne-1-ide). Single-crystal X-ray diffraction analyses confirm that do not interfere...

The benzannulated bisstannylenes linked by a CH2C(CH3)2CH2 (3) or 1,3-(CH2)2C6H4 bridging unit (4) react with [Ni(cod)2] to give the intensely colored homoleptic Ni0 complexes 5 and 6. X-ray diffraction 119Sn NMR studies for complex of bisstannylene linker reveal presence four identical tin atoms. For nickel 6 ligand, which contains unit, two types atoms different coordination environments were found both in solution solid state.

A versatile, one-pot synthesis for the preparation of transition metal complexes bearing protic NH,NH-NHC ligands is disclosed. The reaction unsubstituted 2-halogenoazoles with zerovalent type [M(PPh3)4] (M = Pd, Pt) in presence NH4BF4 proceeds by oxidative addition C2–X (X Cl, Br, I) bond to followed protonation at ring nitrogen atom, leading trans-[MX(PPh3)2(NH,NH-NHC)] PdII, PtII; NHC benzimidazolylidene or imidazolylidene). trans-complexes have been obtained all cases. time needed...

Fluorobenzene solutions of RPCl(2) and a Lewis acid such as ECl(3) (E = Al, Ga) in 1:1 ratio are used reactive sources chlorophosphenium cations [RPCl](+), which insert into P-P bonds dissolved P(4). This general protocol represents powerful strategy for the synthesis new cationic chloro-substituted organophosphorus [RP(5)Cl](+)-cages illustrated by isolation several monocations (21a-g(+)) good to excellent yields. For singular reaction two possible mechanisms proposed on basis quantum...