The X-ray structure of (Tl[Au(C(6)Cl(5))(2)])(n), 1, consists 1-D linear polymer chains parallel to the crystallographic z axis. crystal 1 has channels that run these with interatom distances in range 3.231-4.076 A. There are holes diameters as large 10.471 A, which can accommodate a variety solvents. Complex displays reversible vapochromic emission and absorption spectral behavior when solid is exposed organic vapors such acetone, acetonitrile, triethylamine, acetylacetone,...

Abstract Chemical methods provide an easy way to synthesize silver nanoparticles (Ag NPs) in solution. These metal have a great potential for biomedical applications as antibacterial, antifungal, and antiviral agent or wound healing. The adjustment of the parameters involved these reactions permits precise control over size, shape, monodispersity, surfaces nanoparticles. are being used design new hybrid organic-inorganic inorganic nanomaterials applications.

The luminescence in a series of new bimetallic gold−silver vapochromic structures can be efficiently switched among different colors simply by exposure to solvent vapors. emission color these systems is controlled both aurophilic interactions and halogen bonding, which affect the energy through orbitals.

The first three-coordinate gold(I) N-heterocyclic carbene (NHC) complexes have been prepared with the nido-carborane diphosphine. are brightly luminescent and present very high quantum yield values. ligand is able to modulate energy of emissions and, depending upon substituent, luminescence changes from blue green. Theoretical calculations corroborate that phosphorescence arise charge transfer (LML'CT) transitions (L) metal/ligand group "gold(I)-NHC ligand" (ML').

Aiming at the development of new architectures within context quest for strongly luminescent materials with tunable emission, we utilized propensity robust bimetallic clusters [Au2Ag2(RI/RII)4] (RI = 4-C6F4I, RII 2-C6F4I) self-assembly through aurophilic interactions. With a de novo approach that combines coordination and halogen-bonding potential aromatic heteroperhalogenated ligands, have generated family remarkably provide grounds to address relevance, relative effects, synergistic action...

The calculated energy inversion of the first excited states a heptazine phenylthiolate molecule is consistent with intense blue fluorescence in solid state and toluene solution.

A very promising area of research in which metallophilic attraction has become the dominating factor determining structural patterns that give rise to luminescent materials is discussed. In addition intrinsic conditions a gold complex requires show luminescence, we how type and number ligands, coordination environments around metal centres, temperature, heterometal, metal-metal distances, etc., increase possibilities electronic transitions and, hence, multiply factors affect energy...

The optical properties of [Au2Ag2(C6F5)4(OCMe2)2]n (1) have been studied in the solid state at room temperature and 77 K acetone solution (5 × 10-4 M). crystal structure 1, analyzed by X-ray diffraction, consists polymeric chains formed repetition Au2Ag2 moieties linked through short gold−gold interactions. emission profile observed for 1 dilute M) is assignable to pentafluorophenyl localized ππ* excited states or from π-MMCT transitions, solid-state arises metal-centered (dσ*)1(pσ)1...

The vapochromic behaviors of {Ag2L2[Au(C6F5)2]2}n (L = Et2O (1), Me2CO (2), THF (3), CH3CN (4)) were studied. (1)) was synthesized by the reaction [Bu4N][Au(C6F5)2] with AgOClO3 in 1:1 molar ratio CH2Cl2/Et2O (1:2). 1 used as starting material to form (3)). 3 crystallizes monoclinic space group C2/c and consists tetranuclear units linked together via aurophilic contacts resulting formation a 1D polymer that runs parallel crystallographic z axis. gold(I) atoms are linearly coordinated two...

Two novel nickel(<sc>ii</sc>) complexes [NiL^I]·CH₃CN (<bold>1</bold>·CH₃CN) and [Ni(H₂L^II)(NCS)₂]·0.5H₂O (<bold>2</bold>·0.5H₂O) were fabricated in <italic>in vitro</italic> experiments they both showed the dose dependent cytotoxicity killed A549 lung cancer cells <italic>via</italic> an apoptotic pathway.

The effects of diphosphine flexibility and bite angle on the structures luminescence properties Au(I) complexes have been investigated. A range diphosphines based heteroaromatic backbones [bis(2-diphenylphosphino)phenylether (dpephos), 9,9-dimethyl-4,5-bis(diphenylphosphino)xanthene (xantphos), 4,6-bis(diphenylphosphino)dibenzofuran (dbfphos)] has used to prepare mono- digold derivatives. clear relationship between presence aurophilic contacts emission dinuclear observed, with one studied,...

The linear-chain polymer {Tl[Au(C6Cl5)2]}n, 1, reacts in the solid state and solution with different volatile organic compounds such as tetrahydrofuran, acetone, tetrahydrothiophene, 2-fluoropyridine, acetonitrile, acetylacetone, pyridine. Solid-state exposure of 1 to vapors above VOCs produces a selective reversible change its color that is perceptible human eye even deeper under UV irradiation, allowing function sensor for these VOCs. Heating samples exposed few minutes at 100° C...

2,4-Diaryl- and 2,4-diferrocenyl-1,3-dithiadiphosphetane disulfide dimers (RP(S)S)2 (R = Ph (1a), 4-C6H4OMe (1b), FeC10H9 (Fc) (1c)) react with a variety of alcohols, silanols, trialkylsilyl alcohols to form new dithiophosphonic acids in facile manner. Their corresponding salts chlorogold(I) complexes THF produce dinuclear gold(I) dithiophosphonate the type [AuS2PR(OR')]2 satisfactory yield. The asymmetrical nature ligands allows for gold two isomers (cis trans) as verified by solution 1H...

The new complexes [Pd(dmba)(N10-9AA)(PPh3)]ClO4 (1), [Pt(dmba)(N9-9AA)(PPh3)]ClO4 (2), [Pd(dmba)(N10-9AA)Cl] (3), and [Pd(C6F5)(N10-9AA)(PPh3)Cl] (4) (9-AA = 9-aminoacridine; dmba N,C-chelating 2-(dimethylaminomethyl)phenyl) have been prepared. crystal structures established by X-ray diffraction. In complex 2, an anagostic C−H···Pt interaction is observed. All are luminescent in the solid state at room temperature, showing important differences between palladium platinum complexes. Complex 2...

Ultrasmall gold nanoparticles (Au UNPs) represent a unique class of nanomaterials making them very attractive for certain applications. Herein, we developed an organometallic approach to the synthesis Au UNPs stabilized with C18H37-NHC ligand by solvent free thermolysis [RMIM][Au(C6F5)2] (1) or [Au(C6F5)(RNHC)] (3) (with R = C18H37-), controlling reactivity pentafluorophenyl ligands as deprotonating reductive elimination agents; can be achieved thermolysis. Pentafluorophenyl Au(I) complexes...

In this paper we describe the reactivity of gold acetylide derivatives [Au(C≡CR)(PPh3)] (R = Ph, 2-py). Reactions these complexes with fragments type [M(PPh3)2]+ (M Au, Ag, Cu) afford a series novel discrete molecules stabilized not only by interactions triple bond but also formation strong metal–gold interactions. The crystal structures gold–gold and gold–silver species confirm their similar behavior, while X-ray diffraction establishes different arrangement for copper complex pyridine as...

This perspective highlights the recent developments in study of photoluminescent properties aryl–group eleven complexes. Related and applications such as electroluminescence, triboluminescence, mechanochromism, luminescent liquid crystals, low molecular weight gelators photocatalysts are also discussed.

Silver complexes bearing substituted terpyridine or tetra-2-pyridinylpyrazine ligands have been prepared and structurally characterised. The study of the anticancer properties silver with this type is scarce, despite possibilities combining metal ability for DNA binding. Here, antiproliferative activity, stability, CT-DNA binding, mechanism cell death these types derivatives are studied. High cytotoxicity against different tumour cells was observed, and, more important, a great selectivity...

The dinuclear head-to-tail complexes [M(2)(PPh(2)CH(2)SPh)(2)](2+) (M = Cu (1), Ag (2a, 2b), Au (4)) are obtained either by reaction of [Cu(CH(3)CN)(4)]CF(3)SO(3), AgClO(4), AgCF(3)SO(3), with equimolecular amounts PPh(2)CH(2)SPh or [AuCl(PPh(2)CH(2)SPh)] (3), prepared [AuCl(tht)] and PPh(2)CH(2)SPh, AgCF(3)SO(3). crystal structures 2a 4 have been established X-ray diffraction studies. Ab initio HF/II MP2/II calculations performed on the [M(2)(H(2)PCH(2)SH)(2)](2+) model, indicating that...

Addition of two equivalents diphenylthiomethylphosphine (PPh2-CH2SPh) to the starting materials [Au(tht)2]A (tht = tetrahydrothiophene), AgCF3SO3, or [Cu(CH3CN)4]CF3SO3 produces mononuclear derivatives [M(PPh2CH2SPh)2]A (M Au, A CF3SO3 (1a); M ClO4 (1b); Ag, (4); Cu, (5)) which are able form heterodinuclear complexes [AuM'(PPh2CH2SPh)2](CF3SO3)2 (M' Ag (2), Cu (3)) with a P-Au-P environment. If gold complex is [Au(C6F5)(tht)], reaction phosphine [Au(C6F5)-(PPh2CH2SPh)] (6) from which, by...

[M(C6F5){N(H)CPh2}] (M = Ag (1) and Au (2)) complexes have been synthesized characterized by X-ray diffraction analysis. Complex 1 shows a ladder-type structure in which two [Ag(C6F5){N(H)CPh2}] units are linked Ag(I)−Ag(I) interaction an antiparallel disposition. The dimeric associated through hydrogen bonds of the type N−H···Fortho. On other hand, gold(I) complex 2 displays discrete dimers also conformation both Au(I)−Au(I) interactions N−H···Fortho appear within units. features these...

The synthesis, structural characterization, and the study of photophysical properties complexes [Au2Ag2(C6F5)4(N⋮CCH3)2]n (1) [Au2Cu2(C6F5)4(N⋮CCH3)2]n (2) have been carried out. crystal structure both consists polymeric chains formed by repetition Au2Ag2 or Au2Cu2 units built up metallophilic Au(I)···M(I) interactions that are linked through Au(I)···Au(I) interactions. Complexes 1 2 brightly luminescent in solid state at room temperature 77 K with lifetimes nanosecond range. Both compounds...

Silver nanoparticles of small size with a high surface to volume ratio have been prepared using an organometallic approach. For this, the complex NBu4[Ag(C6F5)2] has treated AgClO4 in 1:1 molar ratio, giving rise nanoparticle precursor [Ag(C6F5)] solution. Addition one equivalent hexadecylamine (HDA) and 5 h reflux toluene leads deep yellow solution containing monodisperse silver (Ag NPs) ca. 10 nm. This approach almost uncontaminated surfaces which make them very reactive. Antimicrobial...