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...

We report a homoleptic Au-Cu alkynyl cluster that represents an unexplored class of luminescent materials with stimuli-responsive photophysical properties. The bimetallic complex formulated as [Au(2)Cu(2)(C(2)OHC(5)H(8))(4)](n) efficiently self-assembles from Au(SC(4)H(8))Cl, Cu(NCMe)(4)PF(6), and 1-ethynylcyclopentanol in the presence NEt(3). This compound shows remarkably diverse polymorphism arising modulation metallophilic interactions by organic solvents. Four crystalline forms,...

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...

Abstract The cocrystallization of a weakly luminescent platinum complex [Pt(btpy)(PPh 3 )Cl] ( 1 ) (Hbtpy=2‐(2benzothienyl)pyridine; emission quantum yield Φ em =0.03) with fluorinated bromo‐ and iodoarenes C 6 F 6‐ n X (X=Br, I; =1, 2) results in the formation efficient halogen‐bonding (XB) interactions PtCl⋅⋅⋅XR. An up to 22‐fold enhancement =0.65) luminescence intensity cocrystallized compound is detected, without substantial change energy. Based on crystallographic, photophysical,...

Belt and suspenders: A supramolecular gold–copper cluster has been synthesized by Cu+-assisted self-assembly of [Au(C2Ph)2] rods a gold–diphosphine belt, which is suspended from the Au6Cu6 core AuAu bonds (see picture). The displays strong orange luminescence on excitation at 308 nm more intense than that either its structural fragments, were isolated studied independently. P-P=Ph2PC6H4C6H4PPh2. Supporting information for this article available WWW under...

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)]...

A general method for the syntheses of dipalladium compounds having a singly bonded Pd26+ core and formula R,S-cis-Pd2(C6H4PPh2)2(O2CR)2Cl2 is described. When alkyl group in carboxylate ligands an electron donating group, are stable yields high. The Pd−Pd distances diamagnetic with R = CF3 CMe3 2.5434(4) 2.5241(9) Å, respectively. Calculations at DFT level suggest that electronic configuration σ2π4δ2δ*2π*4. These represent rare examples palladium(III) compounds.

The reactions between diphosphino-alkynyl gold complexes (PhC2Au)PPh2(C6H4)(n)PPh2(AuC2Ph) (n = 1, 2, 3) with Cu(+) lead to formation of the heterometallic aggregates, composition which may be described by a general formula [{Au(x)Cu(y)(C2Ph)2x}Au3{PPh2(C6H4)(n)PPh2}3](3+(y-x)) 3; x + 1)(n 2)/2; y n(n 1)). These compounds display very similar structural patterns and consist [Au(x)Cu(y)(C2Ph)2x](y-x) alkynyl clusters "wrapped" in [Au3(diphosphine)3](3+) triangles. complex for n 1 was...

The reactions between the diphosphino−alkynyl gold complexes (XC6H4C2Au)PR2−C6H4−PR2(AuC2C6H4X) with Cu+ lead to formation of a family heterometallic clusters general formula [{Au3Cu2(C2C6H4X)6}Au3(PR2C6H4PR2)3][PF6]2 (X = NO2, H, OMe, NMe2; R C6H5, NC4H4). These adopt same structural pattern and consist alkynyl cluster [Au3Cu2(C2C6H4X)6]− "wrapped" by cationic [Au3(PR2C6H4PR2)3]3+ "belt". novel compounds were characterized NMR spectroscopy ESI-MS measurements. A systematic study their...

The unprecedented, purely gold(I) alkynyl-diphosphine clusters 1-3 demonstrate intense room-temperature phosphorescence with maximum quantum efficiency of 92% in solution (3) and 86% solid (2) thermally dependent emission the crystalline form, attributed to crystal lattice arrangement.

In the present study, identification of chiral 1,3,4-oxadiazol-2-ones as potent and selective FAAH inhibitors has been described. The separated enantiomers showed clear differences in potency selectivity toward both MAGL. Additionally, importance chirality on inhibitory activity was proven by simplification approach removing a methyl group at 3-position 1,3,4-oxadiazol-2-one ring. most compound series, S-enantiomer 3-(1-(4-isobutylphenyl)ethyl)-5-methoxy-1,3,4-oxadiazol-2(3H)-one (JZP-327A,...

Coinage metal cyanides efficiently react with a triphosphine. PPh2C6H4–PPh–C6H4PPh2 (P3). to give the complexes M(P3)CN, where M = Cu (1), Ag (2), and Au (3), which can further interact coordinatively unsaturated centers [M(P3)]+ homobimetallic [(P3)M–CN–M(P3)]+X– [M (4a X– CF3SO3– 4b BF4–), (5)] or heterometallic [(P3)Au–CN–Ag(P3)]+ (6) species. Extension of this approach also provided trinuclear complex [(P3)Cu–NC–Au–CN–Cu(P3)]+ (7). Compounds 1–5 were characterized in solid state by X-ray...

Rationally designed cationic phospha-polyaromatic fluorophores were prepared through intramolecular cyclization of the tertiary ortho-(acene)phenylene-phosphines mediated by Cu

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.

Crystalline diphosphonium iodides [MeR2 P-spacer-R2 Me]I with phenylene (1, 2), naphthalene (3, 4), biphenyl (5) and anthracene (6) as aromatic spacers, are photoemissive under ambient conditions. The emission colors (λem values from 550 to 880 nm) intensities (Φem reaching 0.75) defined by the composition substitution geometry of central conjugated chromophore motif, anion-π interactions. Time-resolved variable-temperature luminescence studies suggest phosphorescence for all titled...

Linking two cyclometalated Pt( ii ) fragments via cyanido bridge improves the luminescence and dramatically enhances aggregation ability resulting in distinct sensitivity to properties of surrounding medium.

The reactions of diphosphino-alkynyl gold complexes (PhC2Au)PPh2(C6H4)nPPh2(AuC2Ph) (n = 1, 2, 3) with Ag+ lead to the formation supramolecular heterometallic aggregates, which consist [AuxAgy(C2Ph)2x]y−x clusters (x (n+1)(n+2)/2; y n(n+1)) "wrapped" in gold-diphosphine "belts". composition "belts" depends on size cluster; for n 1 it is an open-loop tetrametallic diphosphine-alkynyl [Au(C2Ph)Au2Ag(PPh2(C6H4)2PPh2)3]3+ complex, and 3 a symmetrical closed triangle [Au3{PPh2(C6H4)nPPh2}3]3+....

The molecular heterometallic [{Au(8)Ag(10)(C(2)Ph)(16)}{(PhC(2)Au)(2)PPh(2)(C(6)H(4))(3)PPh(2)}(2)](2+) aggregate of unprecedented topology was obtained and structurally characterized; this compound demonstrates unusually effective phosphorescence, which displays negligible oxygen quenching due to shielding emissive central cluster by the outer shell molecule.

We have designed and synthesized a series of Au(I) complexes bearing either an alkynyl–(phenylene)n–diphosphine (A-0–A-3) or (phenylene)n–diphosphine (B-1–B-5) bridge, among which the effective distance between center emitting ππ* chromophore can be fine-tuned via insertion various numbers phenylene spacers. then demonstrated for first time in systematic manner decrease rate constant S1 → T1 intersystem crossing (ISC) kisc as increase distance. The results also unambiguously showed that...

Diphenyl(3-methyl-2-indolyl)phosphine (C(9)H(8)NPPh(2), 1) gives stable dimeric palladium(II) complexes that contain the phosphine in P,N-bridging coordination mode. On treating 1 with [Pd(O(2)CCH(3))(2)], new [Pd(mu-C(9)H(7)NPPh(2))(NCCH(3))](2) (2) or [Pd(mu-C(9)H(7)NPPh(2))(mu-O(2)CCH(3))](2) (3) were isolated, depending on solvent used, acetonitrile toluene, respectively. Further reaction of 3 ammonium salt led to substitution one carboxylate ligand afford...