A5008624833- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Crystallography and molecular interactions
- Organometallic Complex Synthesis and Catalysis
- Nanocluster Synthesis and Applications
- Magnetism in coordination complexes
- Metal complexes synthesis and properties
- Organic Light-Emitting Diodes Research
- Lanthanide and Transition Metal Complexes
- Asymmetric Hydrogenation and Catalysis
- Luminescence and Fluorescent Materials
- Molecular Junctions and Nanostructures
- Supramolecular Chemistry and Complexes
- Catalytic Alkyne Reactions
- Polyoxometalates: Synthesis and Applications
- N-Heterocyclic Carbenes in Organic and Inorganic Chemistry
- Molecular Sensors and Ion Detection
- Catalytic Cross-Coupling Reactions
- Porphyrin and Phthalocyanine Chemistry
- Click Chemistry and Applications
- Electrochemical Analysis and Applications
- Analytical Chemistry and Sensors
- Boron Compounds in Chemistry
- Inorganic Chemistry and Materials
- Photochemistry and Electron Transfer Studies
St Petersburg University
2016-2025
IRCCS Ospedale San Raffaele
2022-2023
University of Oulu
2010
The noncovalent intermolecular interactions (π-π stacking, metallophilic bonding) of the cyclometalated complexes [Pt(NCN)L](+)X(-) (NCN = dipyridylbenzene, L pyridine (1), acetonitrile (2)) are determined by steric properties ancillary ligands in solid state and solution, while nature counterion X(-) (X(-) PF6(-), ClO4(-), CF3SO3(-)) affects molecular arrangement 2·X crystal medium. According to variable-temperature X-ray diffraction measurements, extensive Pt···Pt π-stacking significantly...
Abstract Three groups of luminescent platinum complexes [Pt(C^N)(L)(Y)] [C^N=benzothienyl‐pyridine ( 1 ), bezofuryl‐pyridine 2 phenyl‐pyridine 3 ); L/Y=DMSO/Cl a PPh /Cl b /CN c )] have been probed as halogen‐bond (XB) acceptors towards iodofluorobenzenes (IC 6 F 5 and I C 4 ). Compounds (L/Y=DMSO/Cl) afford the adducts ⋅⋅⋅I , which feature I⋅⋅⋅S btpy /I⋅⋅⋅π I⋅⋅⋅O DMSO /I⋅⋅⋅Cl short contacts, respectively. The phosphane‐cyanide derivatives (L/Y=PPh /CN) co‐crystallise with both IC . None...
Abstract Luminescent cyclometalated complexes [M(C^N^N)CN] (M=Pt, Pd; HC^N^N=pyridinyl‐ (M=Pt 1 , Pd 5 ), benzyltriazolyl‐ 2 indazolyl‐ 3 6 pyrazolyl‐phenylpyridine 4 )) decorated with cyanide ligand, have been explored as nucleophilic building blocks for the construction of halogen‐bonded (XB) adducts using IC F an XB donor. The negative electrostatic potential CN group afforded CN⋅⋅⋅I noncovalent interactions platinum – ; energies contacts are comparable to those metallophilic bonding...
Compounds (299) containing 494 symmetrically independent pyridine-2,6-dicarboxylate moieties have been investigated. Among them the structures of Na(3)[Nd(Pydc)(3)].14H(2)O and Na(3)[Er(Pydc)(3)].11.5H(2)O, where H(2)Pydc is pyridine-2,6-dicarboxylic acid, were determined by single-crystal X-ray diffraction, while others taken from Cambridge Structural Database. The characteristics any complex means ;method crystallochemical analysis' are described, coordination types all Pydc ions formulae...
Abstract The bifunctional aminopyridine ligands H 2 N‐(CH ) n ‐4‐C 5 4 N ( =0, L1 ; 1, L2 2, L3 have been utilized for the preparation of rhenium complexes [Re(phen)(CO) 3 – )] + 1 phen=phenanthroline). Complexes and with NH ‐coordinated , respectively, were coupled cycloplatinated motifs {Pt(ppy)Cl} {Pt(dpyb)} (ppy=2‐phenylpyridine, dpyb=dipyridylbenzene) to give bimetallic species (μ‐ / )Pt(ppy)Cl] 6 )Pt(dpyb)] 2+ 7 ). In solution, show MLCT {Re}‐based emission at 298 K, which changes...
The linker between the CC donor site and phosphine oxide controls photophysical properties of cyclometallic Au( iii ) complexes decorated with alkynylphosphine oxides in solution solid state.
A novel type of cyclic P,N-ligands, pyridyl containing phospholanes, has been synthesized in a moderate yield by the reaction primary phosphines with 1,4-dichlorobutane superbasic medium. series homo tetranuclear octahedral Cu4I4L2, dinuclear tetrahedral Cu2I2L3, and "head-to-tail" Cu2I2L2 luminescent complexes these ligands were obtained. All compounds characterized using range spectroscopic computational techniques, case some Cu4I4L2 Cu2I2L3 complexes, single crystal X-ray diffraction. The...
The solution-state emission profiles of a series dinuclear Au(I) complexes 4-6 the general formula Au2(NHC-(CH2)n-NHC)2Br2, where NHC = N-benzylbenzimidazol-2-ylidene and n 1-3, were found to be markedly different from each other dependent on presence excess bromide. addition bromide solutions 4 6 leads red shifts ca. 60 nm, in case 5, which is nonemissive when neat, green luminescence emerges. A detailed computational study undertaken rationalize observed behavior revealed determining role...
The series of chelating phosphine ligands, which contain bidentate P2 (bis[(2-diphenylphosphino)phenyl] ether, DPEphos; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene, Xantphos; 1,2-bis(diphenylphosphino)benzene, dppb), tridentate P3 (bis(2-diphenylphosphinophenyl)phenylphosphine), and tetradentate P4 (tris(2-diphenylphosphino)phenylphosphine) was used for the preparation corresponding dinuclear [M(μ2-SCN)P2]2 (M = Cu, 1, 3, 5; M Ag, 2, 4, 6) mononuclear [CuNCS(P3/P4)] (7, 9) [AgSCN(P3/P4)]...
TiO2 inverse opal (TIO) structures were prepared by the conventional wet chemical method, resulting in well-formed for photocatalytic activity. The obtained functionalized with liquid flame spray-deposited silver nanoparticles (AgNPs). nanocomposites of TIO and AgNPs extensively characterized various spectroscopies such as UV, Raman, X-ray diffraction, energy-dispersive spectroscopy, photoelectron spectroscopy combined microscopic methods scanning electron microscopy, transmission microscopy...
Organometallics featuring acyclic diaminocarbene ligands have recently emerged as powerful emitters for use in electroluminescent technologies.
Abstract Inkjet printing of holography is a prospective technique for fabrication anti‐counterfeiting devices and full‐color imaging. A method production multicolor opal using photonic colloidal crystals presented. The direct holograms on paper with transparent inks based uniform polystyrene spheres diameters 315, 450, 550 nm, respectively, Inks are prepared optimized by rheological parameters the theory Ohnesorge numbers. Opal‐like structures formed silicon wafer, glass slide, glossy photo...
Stereochemical properties and flexibility of organic spacer in oligodentate phosphine ligand spatial separation phosphorus atoms one relative to other regulate the composition architecture multinuclear compounds coinage metals.
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...
In this study, a new family of tetranuclear gold(I) triphosphine derivatives bearing alkynyl and thiolate groups have been efficiently synthesized by treating the polymeric acetylides (AuC2R)n or (AuSPh)n sequentially with (a) phosphine ligand (b) cationic complex [Au3(P^P^P)2](3+) (P^P^P = PPh2CH2PPhCH2PPh2). The clusters [Au4(P^P^P)2(C2R)2](2+) [R Ph (1), biphenyl (2), terphenyl (3), C6H4OMe (4), C6H4NMe2 (5), C6H11O (6), C6H4CF3 (7)] [Au4(P^P^P)2(SPh)2](2+) (8) were characterized X-ray...
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...
A series of diimine ligands has been designed on the basis 2-pyridyl-1 H-phenanthro[9,10- d]imidazole (L1, L2). Coupling basic motif L1 with anthracene-containing fragments affords bichromophore compounds L3-L5, which L4 and L5 adopt a donor-acceptor architecture. The latter allows intramolecular charge transfer intense absorption bands in visible spectrum (lowest λabs 464 nm (ε = 1.2 × 104 M-1 cm-1) 490 5.2 CH2Cl2 for L5, respectively). L1-L5 show strong fluorescence fluid medium (Φem...
Cyclometalated complexes [M(Phbpy)(CN)] (HPhbpy = 6-phenyl-2,2′-bipyridine) of the group 10 metals (Ni, Pd, and Pt) bearing a carbanionic –C∧N∧N pincer ligand were synthesized studied in combined experimental computational DFT approach. All three crystallographically characterized showing closely packed dimers with head-to-tail stacking short metal-metal contacts solid state. The models for geometries, excited states, electronic transitions addressed both monomeric (Ni-mono, Pd-mono,...
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...
Herein we report the synthesis of a stimuli-responsive binuclear Au(I) complex based on 1,5-bis(p-tolyl)-3,7-bis(pyridine-2-yl)-1,5-diaza-3,7-diphosphacyclooctane ligand, which is novel template for design luminescent metal complexes. In solid state, obtained gives three different crystalline phases, were characterized by XRD analysis. It was also found that phases can be reversibly interconverted recrystallization or solvent vapour treatment. The emission these varies in 500–535 nm range....
The face-capping triphosphine, 1,1,1-tris(diphenylphosphino)methane (tppm), together with bridging alkynyl ligands and the counterions, facilitates formation of a family silver complexes, which adopt cluster frameworks variable nuclearity. hexanuclear compounds [Ag6(C2C6H4-4-X)3(tppm)2(An–)3] (X = H (1), CF3 (2), OMe (3), An– CF3SO3–; X (4), CF3COO–) are produced for electron-accepting to moderately electron-donating alkynes appropriate stoichiometry reagents. 1 3 undergo an expansion metal...