A family of triphosphine gold–copper clusters bearing aliphatic and hydroxyaliphatic alkynyl ligands general formula [HC(PPh2)3Au3Cu(C2R)3]+ (R = cyclohexyl (1), cyclopentyl (2), But (3), cyclohexanolyl (4), cyclopentanolyl (5), 2,6-dimethylheptanolyl (6), 2-methylbutanolyl (7), diphenylmethanolyl (8)) was synthesized via a self-assembly protocol, which involves treatment the (AuC2R)n acetylides with (PPh2)3CH ligand in presence Cu+ ions NEt3. Addition Cl– or Br– anions to complex 8 results...

A series of tri- and tetranuclear phosphine complexes d(10) metal ions supported by the polydentate ligands, bis(diphenylphosphinomethyl)phenylphosphine (PPP) tris(diphenylphosphinomethyl)phosphine (PPPP), were synthesized. All compounds under study, [AuM2(PPP)2](3+) (M = Au (1), Cu (2), Ag (3)), [M4(PPPP)2](4+) (4), (5)), [AuAg3(PPPP)2](4+) (6), [Au2Cu2(PPPP)2(NCMe)4](4+) (7), characterized crystallographically. The trinuclear clusters 1-3 contain a linear core, while in isostructural 4-6...

The first example of trinuclear copper(I) and silver(I) pyrazolates adducts with a tertiary diphosphine (Ph2PCH2PPh2) retaining trimeric [MPz]3 core is reported. Despite rather strong M-P bonding, the complexes are able to undergo dissociation one bond leading "merry-go-round" movement P atoms over M3 triangle. copper complex displays emission from 1MLCT 3MLCT states. triplet singlet states separated by relatively small energy gap (1080 cm-1) that triggers thermally activated delayed...

A series of luminescent binuclear ([dppm{Pt(NNC)}2]2+) and mononuclear ([PPh3Pt(NNC)]+) complexes containing pincer ligands were synthesized characterized. Photophysical characteristics both types studied in dichloromethane solution. In the solid phase, compounds adopt a syn configuration where {Pt(NNC)} fragments are held together due to intramolecular Pt–Pt bonding π-stacking ligand aromatic systems. Analysis complexes' molecular structure solution by multinuclear NMR spectroscopy showed...

The reactions between trinuclear gold complex tppmAu(3)Cl(3) (tppm = tris(diphenylphosphino)methane), arylacetylenes HC(2)C(6)H(4)X and Cu(+) under basic conditions result in formation of the heterometallic complexes [tppm(AuC(2)C(6)H(4)X)(3)Cu](+), X H (1), COOMe (2), CN (3), OMe (4), NH(2) (5). These compounds belong to one structural motif consist {(AuC(2)C(6)H(4)X)(3)Cu} core stabilized by tridentate phosphine. Compounds 1-5 were characterized polynuclear NMR IR spectroscopy, ESI-MS...

Abstract Combining the star‐shaped alkynyl ligands with low‐nuclearity gold–copper triphosphane clusters produces 3D metallocage aggregates, which demonstrate room temperature phosphorescence in solution (max Φ em =0.6). Their luminescence mainly originates from cluster‐localized metal‐to‐ligand charge transfer excited state. These supramolecular assemblies can be easily converted into isostructural gold‐silver congeners by direct exchange of metal ions. Such modification terminal cores...

A high yield synthesis of fluorescent benzo, thieno, and furo [c]-fused methyl 7-aryl-6H-pyrrolo[3,4-c]pyridazine-5-carboxylates, including unprecedented heterocyclic skeletons, was performed by the transformation 4-aminopyrrole-2-carboxylate into corresponding diazo compound, followed intramolecular azo coupling under acid conditions onto a nucleophilic aryl or hetaryl group in 3-position. Azo is completely regioselective and, according to DFT calculations, kinetically controlled reaction....

An effective strategy was developed for the synthesis of new 2,2′-bipyridine ligands, symmetrical and unsymmetrical 6,6′-binicotinates, 2,2′-bipyridine-5-carboxylates, from 4-propargylisoxazoles. The 2,2′-disubstituted 6,6′-binicotinates achieved using Eglinton reaction 5-methoxy-4-(prop-2-yn-1-yl)isoxazoles with Cu(OAc)2, followed by Fe(NTf2)2/Au(NTf2)tBuXPhos-catalyzed isomerization so-formed mixture isoxazole/azirine-substituted biacetylenic intermediates. Unsymmetrical were prepared via...

Self-assembly of β-diketonate (Htta = thenoyl(trifluoro)acetone) and 4,4'-azopyridine (Azo-py) with neodymium(iii) ions in the presence methanol resulted formation mononuclear complex [NdIII(TTA)3(MeOH)2]·0.5Azo-py (A) which two asymmetric units are linked by Azo-py through hydrogen bonding via methanol. A reveals near-infrared emission (NIR) centred at about 895 1056 nm, 10-370 K temperature range, originating from emissive transitions on Nd(iii) 4F3/2 to 4I9/2 4I11/2 levels, respectively....

A new series of homoleptic alkynyl complexes, [{Au2Cu2(C2R)4}n] (R=C3H7O (1), C6H11O (2), C9H19O (3), C13H11O (4)), were obtained from Au(SC4H8)Cl, Cu(NCMe)4PF6, and the corresponding alkyne in presence a base (NEt3). Complexes 1-4 aggregate upon crystallization into polymeric chains through extensive metallophilic interactions. The cluster that contains fluorenolyl functionalities, C13H9O (5), crystallizes its molecular form as disolvate, [Au2Cu2(C2C13H9O)4]·2THF. substitution weakly bound...

Abstract Herein, a novel pH‐responsive phosphorescent probe based on cyclometalated iridium(III) complex is reported. To prevent oxygen quenching of phosphorescence and to improve the biocompatibility, covalently conjugated with water‐soluble block‐copolymer that also increases its pH sensitivity. The resulting polymeric nanoprobe demonstrates strong response lifetime onto variations in physiological range. Cellular experiments Chinese hamster ovary (CHO‐K1) cells show predominant...

Coordination of P,N indolyl-phosphine ligands to AuI, AgI and CuI metal ions under weakly basic conditions results in easy deprotonation the indolyl N–H function effective formation a family homo- heterobimetallic complexes MM′(PPh2C9H7N)2 (M = M′ Au (2), Ag (5); M Au, Cu (3), (4)). The latter (4) exists as an inseparable mixture four different complexes, which are equilibrium driven by slow dynamics. reaction silver(I) copper(I) with PPh2(C9H8N) affords rare tetranuclear Z-shaped cluster...

In this work, we report on the synthesis of two highly thermosensitive Eu complexes ([(tta)3Eu(NN1)] (Eu1) and [(tta)3Eu(NN2)] (Eu2), where tta is thenoyltrifluoroacetone, NN1 3-phenyl-2-(pyridin-2-yl)pyrido[2,1-a]pyrrolo[3,2-c]isoquinoline, NN2 1-phenyl-2-(pyridin-2-yl)-1H-phenanthro[9,10-d]imidazole), preparation luminescent nanomaterial (latex nanothermometer, LNT). LNT design were based application Eu2 copolymerization butyl methyl methacrylates in presence complex, surfactant...

Strongly blue fluorescent 1-phenyl-2-(pyridin-2-yl)-1<italic>H</italic>-phenanthro[9,10-<italic>d</italic>]imidazole (<bold>L1</bold>) is a facile block for the construction of multichromophore organic molecules, and simultaneously serves as chelating diimine ligand.

Monitoring of intracellular pH is great importance since deviation this parameter from the "normal" magnitudes can be considered as an indicator various pathologies. Thus, development new efficient and biocompatible sensors suitable for application in biological systems capable quantitative estimation remains urgent chemical task. Herein, we report synthesis a series phosphorescent rhenium [Re(NN)(CO)

Abstract Reactions of the [(tppm)Au 3 Cl ] [tppm = tris(diphenylphosphanyl)methane] precursor and Cu I ions with a stoichiometric amount corresponding linear mono‐ [HC 2 (C 6 H 4 ) n C 5 ; 1, 2] diacetylenes H; 1–3] that contain extended polyaryl moieties afford series luminescent heterometallic complexes common structural motif based on {(AuC Cu} cluster core. The obtained were characterized by using X‐ray crystallography NMR spectroscopy. All compounds studied display dual singlet triplet...

A new heterocyclic system, pyrido[2,1-<italic>a</italic>]pyrrolo[3,2-<italic>c</italic>]isoquinoline, showing stimuli responsive fluorescence, was synthesized via Pd-catalyzed intramolecular cyclization of 1-[1-benzyl-2-(2-bromophenyl)-1<italic>H</italic>-pyrrol-3-yl]pyridin-1-ium bromides.

A family of supramolecular cage molecules has been obtained via self-assembly the phosphine–gold coordination complexes following an aurophilicity-driven aggregation approach. Use di- (PP) or tridentate (PPP) phosphine ligands Pn (n = 2, 3) with rigid polyaromatic backbones leads to clean formation Pn(Au(tht))nn+ species, sequential treatment which H2O/NEt3 and excess H2NBut gives finite 3D structures two major types. The cylindrical-like hexametallic cages [(PPAu2)3(μ3-NBut)2]2+ are based...

A series of novel diimine (N∧N) ligands containing developed aromatic [2,1- a]pyrrolo[3,2- c]isoquinoline system have been prepared and used in the synthesis Ir(III) luminescent complexes. In organic solvents, display fluorescence which depends strongly on nature solvents to give moderate strong orange emission aprotic shows a considerable blue shift substantial increase intensity methanol. Insertion electron-withdrawing -donating substituents into peripheral phenyl fragment has nearly no...

A rational approach to the synthesis of cage-like compounds has been realized build a new family sulfido-phosphane Au(i) polynuclear complexes. Ditopic phosphane ligands with an extended aromatic system were used obtain cage clearly determined geometry. complexes have fully characterised in solution using spectroscopy methods, and DFT optimisation molecular structure gives additional arguments favour suggested structural patterns. All obtained are luminescent solid state, display multiple...

New simple, fast, effective and environmentally friendly one-pot method for the synthesis of extensively used tetrakis(acetonitrile)copper(i) complexes with BF4 -, PF6 - ClO4 counterions is invented optimized. The approach suggested allows using water as solvent minimizes amounts toxic organic reagents in synthetic protocol.

Abstract In this work nine novel heteroleptic Ir(III) complexes of general formulae [Ir( # ) 2 ( )] containing four different cyclometallating and β‐diketonate ligands were synthesized fully characterized. Six them display phosphorescence in the deep red NIR regions with quantum yields reaching 24.6 % degassed solution for one emitters. Variation nature orthometalating results dramatic changes photophysical behavior: compounds 2‐phenylpyridine 1 2‐(benzo[b]thiophen‐2‐yl)pyridine give...